Re: [TANKS] Re: New tank; need advice on motors

2013-08-11 Thread Frank Pittelli
Nice little device (provided it can be found at a reasonable price) that 
eliminates a couple of hassles associated with mounting sprockets on shafts.


On 8/10/2013 10:25 PM, Derek Engelhaupt wrote:

Isaac,

When I had a set of EV Warrior motors, I bought some Fenner Trantorque
keyless bushings to mount my drive sprockets to the 8mm shaft.  The
5/16 version actually is well within tolerance for use with an 8mm
shaft.  The keyless bushings don't mar the shaft at all or require any
thing going through the shaft.  I found mine on Ebay for like $5/per
bushing, but they are normally like $20/per if bought at retail price.
  I do have some left over that are still in the factory packaging if
you want to give them a shot.  I'd let them go for what I paid plus
shipping.

The issue of using the 8mm bushing from Fenner as opposed the the 5/16
bushing is that you would then need metric sprockets which are hard to
find to fit over the 8mm keyless bushing.  The keyless bushings cinch
down on the shaft while pushing out on the sprocket mounted over them.
  No keyway or set screws are used.  Using the standard 5/16 size on
the 8mm shaft means that normal standard bore sprockets can be used (in
this case 3/4).  I got lucky and found some small 3/4 bore sprockets
(like 10 tooth and no hub) in standard 35 pitch that fit right over
them.  I sold the motors, connector pigtails, EV mounts, sprockets, a
set of bushings, and the sprockets to someone here on the list a while
back because I didn't want to deal with creating a reduction for them.
  Here's what the keyless bushings look like:

http://www.fennerdrives.com/trantorque/?s=ZnwyMzE4

I use them for my drive sprockets to mount the 60 pitch sprockets to my
5/8 main drive shafts.  You can see the gold colored keyless bushings
on the rear drive axles (of course those are much larger than the ones I
used on my EV Warrior motors):




On Sat, Aug 10, 2013 at 8:02 AM, isaac goldman panthergol...@gmail.com
mailto:panthergol...@gmail.com wrote:

Thanks for the advice; I really appreciate that you took the time to
type all that up.

Much of it confirms what i already thought or had read on-line, or
that i already learned the hard way in various other robotics
competitions. Good to know im on the right track.


On Sat, Aug 10, 2013 at 8:47 AM, TyngTech steve...@gmail.com
mailto:steve...@gmail.com wrote:

As the first and only current operator of a 24v EVW drive system
in the hobby, I say welcome to the family but be warned!  EVW's
at 24 volts are special beasts that will require a resolute
nature and unfailing faith in your technical prowess to tame!

Steve Tyng


Advice in no particular order:

* These motors are timed CW or CCW.  Have a matched set or
  re-time as required: http://redneckrobots.com/ev/mod.htm
* Remove the internal case grounding and add suppression
  caps:
  http://www.robot-village.net/images/vi/build/debil.jpg
  http://www.robot-village.net/images/vi/build/dremeltab.jpg
* Review the T040 Cromwell build log:
  http://rctankcombat.com/tanks/T040/index.cgi
* If you can get them, use the OEM harnesses to wire to your
  controller.
* Use the same gauge as the OEM for battery to controller.
* Build STRONG motor mounts
* Build a STRONGER transmission
* You will need a PWM controller.  Don't even think of using
  the old style on/off TriPact controllers
* A single 80A fuse before the controller has worked well
  for me going on 8 years
* Motor shafts are 8mm, buy an 8mm bit to bore your motor
  sprockets.  Use a lathe for boring if you can
* You will need effective air flow over the motors for cooling
* A 9:1 reduction will get you over 8MPH but limited run
  time on a set of 18AH SLA's.
* A 11:1 reduction gets you 6 to 7MPH with an hours run time
  on fresh SLA's
* Using only setscrews on a round (or slightly flattened
  shaft) will fail.  Keyed shafts, cross pins, etc. highly
  recommended in your drive-train design
* At workable reductions, these motors will shred your
  drive-train before they stall

Good luck!







On Thursday, August 8, 2013 7:50:57 PM UTC-4, True North
Armouries wrote:

Update; I just received a set of EV motors, and am almost at
the stage of mounting them in the tank. I have a few
questions concerning EV motors though for people who know
about them. Im planning to run them off 24 volts.

Id like to know what rating on the fuse and relays people
use, as the datasheet claims a stall current of over 100
amps. Id like to 

[TANKS] Re: New tank; need advice on motors

2013-08-10 Thread TyngTech
As the first and only current operator of a 24v EVW drive system in the 
hobby, I say welcome to the family but be warned!  EVW's at 24 volts are 
special beasts that will require a resolute nature and unfailing faith in 
your technical prowess to tame!  

Steve Tyng


Advice in no particular order:

   - These motors are timed CW or CCW.  Have a matched set or re-time as 
   required: http://redneckrobots.com/ev/mod.htm
   - Remove the internal case grounding and add suppression caps: 
   http://www.robot-village.net/images/vi/build/debil.jpg 
   http://www.robot-village.net/images/vi/build/dremeltab.jpg
   - Review the T040 Cromwell build log: 
   http://rctankcombat.com/tanks/T040/index.cgi
   - If you can get them, use the OEM harnesses to wire to your controller.
   - Use the same gauge as the OEM for battery to controller.
   - Build STRONG motor mounts
   - Build a STRONGER transmission
   - You will need a PWM controller.  Don't even think of using the old 
   style on/off TriPact controllers 
   - A single 80A fuse before the controller has worked well for me going 
   on 8 years
   - Motor shafts are 8mm, buy an 8mm bit to bore your motor sprockets. 
Use a lathe for boring if you can
   - You will need effective air flow over the motors for cooling
   - A 9:1 reduction will get you over 8MPH but limited run time on a set 
   of 18AH SLA's.
   - A 11:1 reduction gets you 6 to 7MPH with an hours run time on fresh 
   SLA's
   - Using only setscrews on a round (or slightly flattened shaft) will 
   fail.  Keyed shafts, cross pins, etc. highly recommended in your 
   drive-train design
   - At workable reductions, these motors will shred your drive-train 
   before they stall
   
Good luck!







On Thursday, August 8, 2013 7:50:57 PM UTC-4, True North Armouries wrote:

 Update; I just received a set of EV motors, and am almost at the stage of 
 mounting them in the tank. I have a few questions concerning EV motors 
 though for people who know about them. Im planning to run them off 24 volts.

 Id like to know what rating on the fuse and relays people use, as the 
 datasheet claims a stall current of over 100 amps. Id like to know how many 
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do 
 the tabs accept standard sized crimp connectors?  

 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been 
 doing research and electronics work since Easter. I'd like to take a moment 
 to thank Steve for the T34 plans; for my first tank im really grateful to 
 not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem to 
 have EV motors, which are increasingly hard to find. I have done a fair bit 
 of looking on-line, and  have come to the conclusion I have no idea how 
 many watts my motors should be. I found someone selling 350 watt 24 volt 
 scooter motors for a good price, but I wanted to know what you guys think, 
 seeing as some of you have far more experience. Is 350 watts per track 
 enough power, or is it going to be sluggish and i should look for at least 
 500-600 watts?


 Thanks in advance,

 Isaac



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Re: [TANKS] Re: New tank; need advice on motors

2013-08-10 Thread isaac goldman
Thanks for the advice; I really appreciate that you took the time to type
all that up.

Much of it confirms what i already thought or had read on-line, or that i
already learned the hard way in various other robotics competitions. Good
to know im on the right track.


On Sat, Aug 10, 2013 at 8:47 AM, TyngTech steve...@gmail.com wrote:

 As the first and only current operator of a 24v EVW drive system in the
 hobby, I say welcome to the family but be warned!  EVW's at 24 volts are
 special beasts that will require a resolute nature and unfailing faith in
 your technical prowess to tame!

 Steve Tyng


 Advice in no particular order:

- These motors are timed CW or CCW.  Have a matched set or re-time as
required: http://redneckrobots.com/ev/mod.htm
- Remove the internal case grounding and add suppression caps:
http://www.robot-village.net/images/vi/build/debil.jpg
http://www.robot-village.net/images/vi/build/dremeltab.jpg
- Review the T040 Cromwell build log:
http://rctankcombat.com/tanks/T040/index.cgi
- If you can get them, use the OEM harnesses to wire to your
controller.
- Use the same gauge as the OEM for battery to controller.
- Build STRONG motor mounts
- Build a STRONGER transmission
- You will need a PWM controller.  Don't even think of using the old
style on/off TriPact controllers
- A single 80A fuse before the controller has worked well for me going
on 8 years
- Motor shafts are 8mm, buy an 8mm bit to bore your motor sprockets.
 Use a lathe for boring if you can
- You will need effective air flow over the motors for cooling
- A 9:1 reduction will get you over 8MPH but limited run time on a set
of 18AH SLA's.
- A 11:1 reduction gets you 6 to 7MPH with an hours run time on fresh
SLA's
- Using only setscrews on a round (or slightly flattened shaft) will
fail.  Keyed shafts, cross pins, etc. highly recommended in your
drive-train design
- At workable reductions, these motors will shred your drive-train
before they stall

 Good luck!







 On Thursday, August 8, 2013 7:50:57 PM UTC-4, True North Armouries wrote:

 Update; I just received a set of EV motors, and am almost at the stage of
 mounting them in the tank. I have a few questions concerning EV motors
 though for people who know about them. Im planning to run them off 24 volts.

 Id like to know what rating on the fuse and relays people use, as the
 datasheet claims a stall current of over 100 amps. Id like to know how many
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do
 the tabs accept standard sized crimp connectors?

 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been
 doing research and electronics work since Easter. I'd like to take a moment
 to thank Steve for the T34 plans; for my first tank im really grateful to
 not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem to
 have EV motors, which are increasingly hard to find. I have done a fair bit
 of looking on-line, and  have come to the conclusion I have no idea how
 many watts my motors should be. I found someone selling 350 watt 24 volt
 scooter motors for a good price, but I wanted to know what you guys think,
 seeing as some of you have far more experience. Is 350 watts per track
 enough power, or is it going to be sluggish and i should look for at least
 500-600 watts?


 Thanks in advance,

 Isaac

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Re: [TANKS] Re: New tank; need advice on motors

2013-08-10 Thread Derek Engelhaupt
Forgot to mention, they can be loosened and tightened as many times as you
need to.  If the sprocket is not where you want it you simply loosen the
bushing, slide the sprocket/bushing where you want it, and tighten it back
down.  I've never had mine slip being used to hold my drive sprockets in
place and those carbon steel tracks are heavy as hell (like 20lbs each).

Derek


On Sat, Aug 10, 2013 at 9:25 PM, Derek Engelhaupt tan...@gmail.com wrote:

 Isaac,

 When I had a set of EV Warrior motors, I bought some Fenner Trantorque
 keyless bushings to mount my drive sprockets to the 8mm shaft.  The 5/16
 version actually is well within tolerance for use with an 8mm shaft.  The
 keyless bushings don't mar the shaft at all or require any thing going
 through the shaft.  I found mine on Ebay for like $5/per bushing, but they
 are normally like $20/per if bought at retail price.  I do have some left
 over that are still in the factory packaging if you want to give them a
 shot.  I'd let them go for what I paid plus shipping.

 The issue of using the 8mm bushing from Fenner as opposed the the 5/16
 bushing is that you would then need metric sprockets which are hard to find
 to fit over the 8mm keyless bushing.  The keyless bushings cinch down on
 the shaft while pushing out on the sprocket mounted over them.  No keyway
 or set screws are used.  Using the standard 5/16 size on the 8mm shaft
 means that normal standard bore sprockets can be used (in this case 3/4).
  I got lucky and found some small 3/4 bore sprockets (like 10 tooth and no
 hub) in standard 35 pitch that fit right over them.  I sold the motors,
 connector pigtails, EV mounts, sprockets, a set of bushings, and the
 sprockets to someone here on the list a while back because I didn't want to
 deal with creating a reduction for them.  Here's what the keyless bushings
 look like:

 http://www.fennerdrives.com/trantorque/?s=ZnwyMzE4

 I use them for my drive sprockets to mount the 60 pitch sprockets to my
 5/8 main drive shafts.  You can see the gold colored keyless bushings on
 the rear drive axles (of course those are much larger than the ones I used
 on my EV Warrior motors):




 On Sat, Aug 10, 2013 at 8:02 AM, isaac goldman panthergol...@gmail.comwrote:

 Thanks for the advice; I really appreciate that you took the time to type
 all that up.

 Much of it confirms what i already thought or had read on-line, or that i
 already learned the hard way in various other robotics competitions. Good
 to know im on the right track.


 On Sat, Aug 10, 2013 at 8:47 AM, TyngTech steve...@gmail.com wrote:

 As the first and only current operator of a 24v EVW drive system in the
 hobby, I say welcome to the family but be warned!  EVW's at 24 volts are
 special beasts that will require a resolute nature and unfailing faith in
 your technical prowess to tame!

 Steve Tyng


 Advice in no particular order:

- These motors are timed CW or CCW.  Have a matched set or re-time
as required: http://redneckrobots.com/ev/mod.htm
- Remove the internal case grounding and add suppression caps:
http://www.robot-village.net/images/vi/build/debil.jpg
http://www.robot-village.net/images/vi/build/dremeltab.jpg
- Review the T040 Cromwell build log:
http://rctankcombat.com/tanks/T040/index.cgi
- If you can get them, use the OEM harnesses to wire to your
controller.
- Use the same gauge as the OEM for battery to controller.
- Build STRONG motor mounts
- Build a STRONGER transmission
- You will need a PWM controller.  Don't even think of using the old
style on/off TriPact controllers
- A single 80A fuse before the controller has worked well for me
going on 8 years
- Motor shafts are 8mm, buy an 8mm bit to bore your motor sprockets.
 Use a lathe for boring if you can
- You will need effective air flow over the motors for cooling
- A 9:1 reduction will get you over 8MPH but limited run time on a
set of 18AH SLA's.
- A 11:1 reduction gets you 6 to 7MPH with an hours run time on
fresh SLA's
- Using only setscrews on a round (or slightly flattened shaft) will
fail.  Keyed shafts, cross pins, etc. highly recommended in your
drive-train design
- At workable reductions, these motors will shred your drive-train
before they stall

 Good luck!







 On Thursday, August 8, 2013 7:50:57 PM UTC-4, True North Armouries wrote:

 Update; I just received a set of EV motors, and am almost at the stage
 of mounting them in the tank. I have a few questions concerning EV motors
 though for people who know about them. Im planning to run them off 24 
 volts.

 Id like to know what rating on the fuse and relays people use, as the
 datasheet claims a stall current of over 100 amps. Id like to know how many
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do
 the tabs accept standard sized crimp connectors?

 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:


Re: [TANKS] Re: New tank; need advice on motors

2013-08-09 Thread isaac goldman
Now for a much stupider question, but what wire gauge should I be using in
the run from the batteries to the speed controller to the motors?


On Fri, Aug 9, 2013 at 12:39 AM, Derek Engelhaupt tan...@gmail.com wrote:

 Of course that's if your tracks didn't slip at all your motors would
 stall.  My tracks are steel so they would slip some.


 On Thu, Aug 8, 2013 at 11:37 PM, Derek Engelhaupt tan...@gmail.comwrote:

 I have seen people use standard clips, but Robot Market Place looks like
 they still have the connectors in stock:

 http://www.robotmarketplace.com/products/0-EVCABLE.html

 Most people were using (2) 12V 18AH batteries to power them.  The fuses
 you would need on them would really depend on the speed controller you use.
  Personally I have blown 30A fuses with my scooter motors.  I think I'm
 using a 50A fuse with a 60A controller.  Stall current would be if you
 decided to do something like...running your tank into a wall and keep
 pushing the motors full throttle.  At that point they would stall and be
 pulling upwards of 100A.  At 50A my fuses would blow and protect my motors
 and my controllers.

 Derek


 On Thu, Aug 8, 2013 at 6:50 PM, True North Armouries 
 panthergol...@gmail.com wrote:

 Update; I just received a set of EV motors, and am almost at the stage
 of mounting them in the tank. I have a few questions concerning EV motors
 though for people who know about them. Im planning to run them off 24 volts.

 Id like to know what rating on the fuse and relays people use, as the
 datasheet claims a stall current of over 100 amps. Id like to know how many
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do
 the tabs accept standard sized crimp connectors?


 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been
 doing research and electronics work since Easter. I'd like to take a moment
 to thank Steve for the T34 plans; for my first tank im really grateful to
 not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem to
 have EV motors, which are increasingly hard to find. I have done a fair bit
 of looking on-line, and  have come to the conclusion I have no idea how
 many watts my motors should be. I found someone selling 350 watt 24 volt
 scooter motors for a good price, but I wanted to know what you guys think,
 seeing as some of you have far more experience. Is 350 watts per track
 enough power, or is it going to be sluggish and i should look for at least
 500-600 watts?


 Thanks in advance,

 Isaac

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5142334423

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Re: [TANKS] Re: New tank; need advice on motors

2013-08-09 Thread isaac goldman
I did the calculations myself, but im curious what gauge you guys use...


On Fri, Aug 9, 2013 at 12:00 PM, isaac goldman panthergol...@gmail.comwrote:

 Now for a much stupider question, but what wire gauge should I be using in
 the run from the batteries to the speed controller to the motors?


 On Fri, Aug 9, 2013 at 12:39 AM, Derek Engelhaupt tan...@gmail.comwrote:

 Of course that's if your tracks didn't slip at all your motors would
 stall.  My tracks are steel so they would slip some.


 On Thu, Aug 8, 2013 at 11:37 PM, Derek Engelhaupt tan...@gmail.comwrote:

 I have seen people use standard clips, but Robot Market Place looks like
 they still have the connectors in stock:

 http://www.robotmarketplace.com/products/0-EVCABLE.html

 Most people were using (2) 12V 18AH batteries to power them.  The fuses
 you would need on them would really depend on the speed controller you use.
  Personally I have blown 30A fuses with my scooter motors.  I think I'm
 using a 50A fuse with a 60A controller.  Stall current would be if you
 decided to do something like...running your tank into a wall and keep
 pushing the motors full throttle.  At that point they would stall and be
 pulling upwards of 100A.  At 50A my fuses would blow and protect my motors
 and my controllers.

 Derek


 On Thu, Aug 8, 2013 at 6:50 PM, True North Armouries 
 panthergol...@gmail.com wrote:

 Update; I just received a set of EV motors, and am almost at the stage
 of mounting them in the tank. I have a few questions concerning EV motors
 though for people who know about them. Im planning to run them off 24 
 volts.

 Id like to know what rating on the fuse and relays people use, as the
 datasheet claims a stall current of over 100 amps. Id like to know how many
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do
 the tabs accept standard sized crimp connectors?


 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been
 doing research and electronics work since Easter. I'd like to take a 
 moment
 to thank Steve for the T34 plans; for my first tank im really grateful to
 not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem
 to have EV motors, which are increasingly hard to find. I have done a fair
 bit of looking on-line, and  have come to the conclusion I have no idea 
 how
 many watts my motors should be. I found someone selling 350 watt 24 volt
 scooter motors for a good price, but I wanted to know what you guys think,
 seeing as some of you have far more experience. Is 350 watts per track
 enough power, or is it going to be sluggish and i should look for at least
 500-600 watts?


 Thanks in advance,

 Isaac

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 5142334423

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 the individual named. If you are not the named addressee you should not
 disseminate, distribute or copy this e-mail.




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5142334423

This message contains confidential information and is intended only for the
individual named. If you are not the named addressee you should not
disseminate, distribute or copy this e-mail.

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Re: [TANKS] Re: New tank; need advice on motors

2013-08-09 Thread Michael Butts
Being that they could stall and draw 100A each. I would overkill a smidge
with 8awg or 10awg silicone jacketed high strand count wire. You could get
by with 12awg though I bet.
Mike B


On Fri, Aug 9, 2013 at 7:16 PM, isaac goldman panthergol...@gmail.comwrote:

 I did the calculations myself, but im curious what gauge you guys use...


 On Fri, Aug 9, 2013 at 12:00 PM, isaac goldman panthergol...@gmail.comwrote:

 Now for a much stupider question, but what wire gauge should I be using
 in the run from the batteries to the speed controller to the motors?


 On Fri, Aug 9, 2013 at 12:39 AM, Derek Engelhaupt tan...@gmail.comwrote:

 Of course that's if your tracks didn't slip at all your motors would
 stall.  My tracks are steel so they would slip some.


 On Thu, Aug 8, 2013 at 11:37 PM, Derek Engelhaupt tan...@gmail.comwrote:

 I have seen people use standard clips, but Robot Market Place looks
 like they still have the connectors in stock:

 http://www.robotmarketplace.com/products/0-EVCABLE.html

 Most people were using (2) 12V 18AH batteries to power them.  The fuses
 you would need on them would really depend on the speed controller you use.
  Personally I have blown 30A fuses with my scooter motors.  I think I'm
 using a 50A fuse with a 60A controller.  Stall current would be if you
 decided to do something like...running your tank into a wall and keep
 pushing the motors full throttle.  At that point they would stall and be
 pulling upwards of 100A.  At 50A my fuses would blow and protect my motors
 and my controllers.

 Derek


 On Thu, Aug 8, 2013 at 6:50 PM, True North Armouries 
 panthergol...@gmail.com wrote:

 Update; I just received a set of EV motors, and am almost at the stage
 of mounting them in the tank. I have a few questions concerning EV motors
 though for people who know about them. Im planning to run them off 24 
 volts.

 Id like to know what rating on the fuse and relays people use, as the
 datasheet claims a stall current of over 100 amps. Id like to know how 
 many
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do
 the tabs accept standard sized crimp connectors?


 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been
 doing research and electronics work since Easter. I'd like to take a 
 moment
 to thank Steve for the T34 plans; for my first tank im really grateful to
 not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem
 to have EV motors, which are increasingly hard to find. I have done a 
 fair
 bit of looking on-line, and  have come to the conclusion I have no idea 
 how
 many watts my motors should be. I found someone selling 350 watt 24 volt
 scooter motors for a good price, but I wanted to know what you guys 
 think,
 seeing as some of you have far more experience. Is 350 watts per track
 enough power, or is it going to be sluggish and i should look for at 
 least
 500-600 watts?


 Thanks in advance,

 Isaac

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Re: [TANKS] Re: New tank; need advice on motors

2013-08-09 Thread isaac goldman
^^Thats what i had figured. I calculated 8 AWG as the best choice, but
wanted to confirm with what other people are using


On Fri, Aug 9, 2013 at 3:06 PM, Michael Butts buttsakau...@gmail.comwrote:

 Being that they could stall and draw 100A each. I would overkill a smidge
 with 8awg or 10awg silicone jacketed high strand count wire. You could get
 by with 12awg though I bet.
 Mike B


 On Fri, Aug 9, 2013 at 7:16 PM, isaac goldman panthergol...@gmail.comwrote:

 I did the calculations myself, but im curious what gauge you guys use...


 On Fri, Aug 9, 2013 at 12:00 PM, isaac goldman 
 panthergol...@gmail.comwrote:

 Now for a much stupider question, but what wire gauge should I be using
 in the run from the batteries to the speed controller to the motors?


 On Fri, Aug 9, 2013 at 12:39 AM, Derek Engelhaupt tan...@gmail.comwrote:

 Of course that's if your tracks didn't slip at all your motors would
 stall.  My tracks are steel so they would slip some.


 On Thu, Aug 8, 2013 at 11:37 PM, Derek Engelhaupt tan...@gmail.comwrote:

 I have seen people use standard clips, but Robot Market Place looks
 like they still have the connectors in stock:

 http://www.robotmarketplace.com/products/0-EVCABLE.html

 Most people were using (2) 12V 18AH batteries to power them.  The
 fuses you would need on them would really depend on the speed controller
 you use.  Personally I have blown 30A fuses with my scooter motors.  I
 think I'm using a 50A fuse with a 60A controller.  Stall current would be
 if you decided to do something like...running your tank into a wall and
 keep pushing the motors full throttle.  At that point they would stall and
 be pulling upwards of 100A.  At 50A my fuses would blow and protect my
 motors and my controllers.

 Derek


 On Thu, Aug 8, 2013 at 6:50 PM, True North Armouries 
 panthergol...@gmail.com wrote:

 Update; I just received a set of EV motors, and am almost at the
 stage of mounting them in the tank. I have a few questions concerning EV
 motors though for people who know about them. Im planning to run them off
 24 volts.

 Id like to know what rating on the fuse and relays people use, as the
 datasheet claims a stall current of over 100 amps. Id like to know how 
 many
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do
 the tabs accept standard sized crimp connectors?


 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been
 doing research and electronics work since Easter. I'd like to take a 
 moment
 to thank Steve for the T34 plans; for my first tank im really grateful 
 to
 not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem
 to have EV motors, which are increasingly hard to find. I have done a 
 fair
 bit of looking on-line, and  have come to the conclusion I have no idea 
 how
 many watts my motors should be. I found someone selling 350 watt 24 volt
 scooter motors for a good price, but I wanted to know what you guys 
 think,
 seeing as some of you have far more experience. Is 350 watts per track
 enough power, or is it going to be sluggish and i should look for at 
 least
 500-600 watts?


 Thanks in advance,

 Isaac

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 5142334423

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Re: [TANKS] Re: New tank; need advice on motors

2013-08-09 Thread Derek ENGELHAUPT
And the point is if your fuses are set to 50A and your fuses do their job then 
the wire doesn't become your fuse. :)

Sent from my iPhone

On Aug 9, 2013, at 2:19 PM, isaac goldman panthergol...@gmail.com wrote:

 ^^Thats what i had figured. I calculated 8 AWG as the best choice, but wanted 
 to confirm with what other people are using
 
 
 On Fri, Aug 9, 2013 at 3:06 PM, Michael Butts buttsakau...@gmail.com wrote:
 Being that they could stall and draw 100A each. I would overkill a smidge 
 with 8awg or 10awg silicone jacketed high strand count wire. You could get 
 by with 12awg though I bet.
 Mike B
 
 
 On Fri, Aug 9, 2013 at 7:16 PM, isaac goldman panthergol...@gmail.com 
 wrote:
 I did the calculations myself, but im curious what gauge you guys use...
 
 
 On Fri, Aug 9, 2013 at 12:00 PM, isaac goldman panthergol...@gmail.com 
 wrote:
 Now for a much stupider question, but what wire gauge should I be using in 
 the run from the batteries to the speed controller to the motors? 
 
 
 On Fri, Aug 9, 2013 at 12:39 AM, Derek Engelhaupt tan...@gmail.com wrote:
 Of course that's if your tracks didn't slip at all your motors would 
 stall.  My tracks are steel so they would slip some.
 
 
 On Thu, Aug 8, 2013 at 11:37 PM, Derek Engelhaupt tan...@gmail.com 
 wrote:
 I have seen people use standard clips, but Robot Market Place looks like 
 they still have the connectors in stock:
 
 http://www.robotmarketplace.com/products/0-EVCABLE.html
 
 Most people were using (2) 12V 18AH batteries to power them.  The fuses 
 you would need on them would really depend on the speed controller you 
 use.  Personally I have blown 30A fuses with my scooter motors.  I think 
 I'm using a 50A fuse with a 60A controller.  Stall current would be if 
 you decided to do something like...running your tank into a wall and 
 keep pushing the motors full throttle.  At that point they would stall 
 and be pulling upwards of 100A.  At 50A my fuses would blow and protect 
 my motors and my controllers.
 
 Derek
 
 
 On Thu, Aug 8, 2013 at 6:50 PM, True North Armouries 
 panthergol...@gmail.com wrote:
 Update; I just received a set of EV motors, and am almost at the stage 
 of mounting them in the tank. I have a few questions concerning EV 
 motors though for people who know about them. Im planning to run them 
 off 24 volts.
 
 Id like to know what rating on the fuse and relays people use, as the 
 datasheet claims a stall current of over 100 amps. Id like to know how 
 many Ah the batteries should be. Lastly, do i need the ev wiring 
 harness or do the tabs accept standard sized crimp connectors?  
 
 
 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:
 Hi all,
 
 I started working on my t34-85 this past Canada Day, though ive been 
 doing research and electronics work since Easter. I'd like to take a 
 moment to thank Steve for the T34 plans; for my first tank im really 
 grateful to not have to scale any drawings before I can start sawing.
 
 Ive been looking at motors, and I need some advice; most of you seem 
 to have EV motors, which are increasingly hard to find. I have done a 
 fair bit of looking on-line, and  have come to the conclusion I have 
 no idea how many watts my motors should be. I found someone selling 
 350 watt 24 volt scooter motors for a good price, but I wanted to know 
 what you guys think, seeing as some of you have far more experience. 
 Is 350 watts per track enough power, or is it going to be sluggish and 
 i should look for at least 500-600 watts?
 
 
 Thanks in advance,
 
 Isaac
 
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 -- 
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 5142334423
 
 This message contains confidential information and is intended only for 
 the individual named. If you are not the named addressee you should not 
 disseminate, distribute or copy this e-mail. 
 
 
 
 -- 
 Isaac Goldman
 5142334423
 
 

Re: [TANKS] Re: New tank; need advice on motors

2013-08-09 Thread isaac goldman
My motor driver mosfets can handle 175 amps at 75 degrees C, so my main
concern is burning a wire; im gonna set my fuses on the high side...


On Fri, Aug 9, 2013 at 3:33 PM, Derek ENGELHAUPT tan...@gmail.com wrote:

 And the point is if your fuses are set to 50A and your fuses do their job
 then the wire doesn't become your fuse. :)

 Sent from my iPhone

 On Aug 9, 2013, at 2:19 PM, isaac goldman panthergol...@gmail.com wrote:

 ^^Thats what i had figured. I calculated 8 AWG as the best choice, but
 wanted to confirm with what other people are using


 On Fri, Aug 9, 2013 at 3:06 PM, Michael Butts buttsakau...@gmail.comwrote:

 Being that they could stall and draw 100A each. I would overkill a smidge
 with 8awg or 10awg silicone jacketed high strand count wire. You could get
 by with 12awg though I bet.
 Mike B


 On Fri, Aug 9, 2013 at 7:16 PM, isaac goldman panthergol...@gmail.comwrote:

 I did the calculations myself, but im curious what gauge you guys use...


 On Fri, Aug 9, 2013 at 12:00 PM, isaac goldman 
 panthergol...@gmail.comwrote:

 Now for a much stupider question, but what wire gauge should I be using
 in the run from the batteries to the speed controller to the motors?


 On Fri, Aug 9, 2013 at 12:39 AM, Derek Engelhaupt tan...@gmail.comwrote:

 Of course that's if your tracks didn't slip at all your motors would
 stall.  My tracks are steel so they would slip some.


 On Thu, Aug 8, 2013 at 11:37 PM, Derek Engelhaupt tan...@gmail.comwrote:

 I have seen people use standard clips, but Robot Market Place looks
 like they still have the connectors in stock:

 http://www.robotmarketplace.com/products/0-EVCABLE.html

 Most people were using (2) 12V 18AH batteries to power them.  The
 fuses you would need on them would really depend on the speed controller
 you use.  Personally I have blown 30A fuses with my scooter motors.  I
 think I'm using a 50A fuse with a 60A controller.  Stall current would be
 if you decided to do something like...running your tank into a wall and
 keep pushing the motors full throttle.  At that point they would stall 
 and
 be pulling upwards of 100A.  At 50A my fuses would blow and protect my
 motors and my controllers.

 Derek


 On Thu, Aug 8, 2013 at 6:50 PM, True North Armouries 
 panthergol...@gmail.com wrote:

 Update; I just received a set of EV motors, and am almost at the
 stage of mounting them in the tank. I have a few questions concerning EV
 motors though for people who know about them. Im planning to run them 
 off
 24 volts.

 Id like to know what rating on the fuse and relays people use, as
 the datasheet claims a stall current of over 100 amps. Id like to know 
 how
 many Ah the batteries should be. Lastly, do i need the ev wiring 
 harness or
 do the tabs accept standard sized crimp connectors?


 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive
 been doing research and electronics work since Easter. I'd like to 
 take a
 moment to thank Steve for the T34 plans; for my first tank im really
 grateful to not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you
 seem to have EV motors, which are increasingly hard to find. I have 
 done a
 fair bit of looking on-line, and  have come to the conclusion I have no
 idea how many watts my motors should be. I found someone selling 350 
 watt
 24 volt scooter motors for a good price, but I wanted to know what you 
 guys
 think, seeing as some of you have far more experience. Is 350 watts per
 track enough power, or is it going to be sluggish and i should look 
 for at
 least 500-600 watts?


 Thanks in advance,

 Isaac

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 --
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 5142334423

 This message contains confidential information and is intended only 

[TANKS] Re: New tank; need advice on motors

2013-08-08 Thread True North Armouries
Update; I just received a set of EV motors, and am almost at the stage of 
mounting them in the tank. I have a few questions concerning EV motors 
though for people who know about them. Im planning to run them off 24 volts.

Id like to know what rating on the fuse and relays people use, as the 
datasheet claims a stall current of over 100 amps. Id like to know how many 
Ah the batteries should be. Lastly, do i need the ev wiring harness or do 
the tabs accept standard sized crimp connectors?  

On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been doing 
 research and electronics work since Easter. I'd like to take a moment to 
 thank Steve for the T34 plans; for my first tank im really grateful to not 
 have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem to 
 have EV motors, which are increasingly hard to find. I have done a fair bit 
 of looking on-line, and  have come to the conclusion I have no idea how 
 many watts my motors should be. I found someone selling 350 watt 24 volt 
 scooter motors for a good price, but I wanted to know what you guys think, 
 seeing as some of you have far more experience. Is 350 watts per track 
 enough power, or is it going to be sluggish and i should look for at least 
 500-600 watts?


 Thanks in advance,

 Isaac


-- 
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To post a message, send email to rctankcombat@googlegroups.com
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Re: [TANKS] Re: New tank; need advice on motors

2013-08-08 Thread Derek Engelhaupt
I have seen people use standard clips, but Robot Market Place looks like
they still have the connectors in stock:

http://www.robotmarketplace.com/products/0-EVCABLE.html

Most people were using (2) 12V 18AH batteries to power them.  The fuses you
would need on them would really depend on the speed controller you use.
 Personally I have blown 30A fuses with my scooter motors.  I think I'm
using a 50A fuse with a 60A controller.  Stall current would be if you
decided to do something like...running your tank into a wall and keep
pushing the motors full throttle.  At that point they would stall and be
pulling upwards of 100A.  At 50A my fuses would blow and protect my motors
and my controllers.

Derek


On Thu, Aug 8, 2013 at 6:50 PM, True North Armouries 
panthergol...@gmail.com wrote:

 Update; I just received a set of EV motors, and am almost at the stage of
 mounting them in the tank. I have a few questions concerning EV motors
 though for people who know about them. Im planning to run them off 24 volts.

 Id like to know what rating on the fuse and relays people use, as the
 datasheet claims a stall current of over 100 amps. Id like to know how many
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do
 the tabs accept standard sized crimp connectors?


 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been
 doing research and electronics work since Easter. I'd like to take a moment
 to thank Steve for the T34 plans; for my first tank im really grateful to
 not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem to
 have EV motors, which are increasingly hard to find. I have done a fair bit
 of looking on-line, and  have come to the conclusion I have no idea how
 many watts my motors should be. I found someone selling 350 watt 24 volt
 scooter motors for a good price, but I wanted to know what you guys think,
 seeing as some of you have far more experience. Is 350 watts per track
 enough power, or is it going to be sluggish and i should look for at least
 500-600 watts?


 Thanks in advance,

 Isaac

  --
 --
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 To post a message, send email to rctankcombat@googlegroups.com
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Re: [TANKS] Re: New tank; need advice on motors

2013-08-08 Thread Derek Engelhaupt
Of course that's if your tracks didn't slip at all your motors would stall.
 My tracks are steel so they would slip some.


On Thu, Aug 8, 2013 at 11:37 PM, Derek Engelhaupt tan...@gmail.com wrote:

 I have seen people use standard clips, but Robot Market Place looks like
 they still have the connectors in stock:

 http://www.robotmarketplace.com/products/0-EVCABLE.html

 Most people were using (2) 12V 18AH batteries to power them.  The fuses
 you would need on them would really depend on the speed controller you use.
  Personally I have blown 30A fuses with my scooter motors.  I think I'm
 using a 50A fuse with a 60A controller.  Stall current would be if you
 decided to do something like...running your tank into a wall and keep
 pushing the motors full throttle.  At that point they would stall and be
 pulling upwards of 100A.  At 50A my fuses would blow and protect my motors
 and my controllers.

 Derek


 On Thu, Aug 8, 2013 at 6:50 PM, True North Armouries 
 panthergol...@gmail.com wrote:

 Update; I just received a set of EV motors, and am almost at the stage of
 mounting them in the tank. I have a few questions concerning EV motors
 though for people who know about them. Im planning to run them off 24 volts.

 Id like to know what rating on the fuse and relays people use, as the
 datasheet claims a stall current of over 100 amps. Id like to know how many
 Ah the batteries should be. Lastly, do i need the ev wiring harness or do
 the tabs accept standard sized crimp connectors?


 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Hi all,

 I started working on my t34-85 this past Canada Day, though ive been
 doing research and electronics work since Easter. I'd like to take a moment
 to thank Steve for the T34 plans; for my first tank im really grateful to
 not have to scale any drawings before I can start sawing.

 Ive been looking at motors, and I need some advice; most of you seem to
 have EV motors, which are increasingly hard to find. I have done a fair bit
 of looking on-line, and  have come to the conclusion I have no idea how
 many watts my motors should be. I found someone selling 350 watt 24 volt
 scooter motors for a good price, but I wanted to know what you guys think,
 seeing as some of you have far more experience. Is 350 watts per track
 enough power, or is it going to be sluggish and i should look for at least
 500-600 watts?


 Thanks in advance,

 Isaac

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[TANKS] Re: New tank; need advice on motors

2013-07-08 Thread Joe Sommer


On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Ive been looking at motors, and I need some advice;


350W is strong enough for a clone of T005

Razorama for $55
http://www.razorama.com/razor-dirt-quad-motor.html
They will ship to Canada.

Drawings at www.anvilus.com

Frank can bore 35P sprockets to fit the 11mm shafts.

Joe


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Re: [TANKS] Re: New tank; need advice on motors

2013-07-08 Thread isaac goldman
Wow thanks for the quick responses everyone. I really appreciate it. Im
glad 350 watts is enough, and thanks everyone for your help.


On Mon, Jul 8, 2013 at 7:42 AM, Joe Sommer anvil...@comcast.net wrote:



 On Sunday, July 7, 2013 8:46:19 PM UTC-4, True North Armouries wrote:

 Ive been looking at motors, and I need some advice;


 350W is strong enough for a clone of T005

 Razorama for $55
 http://www.razorama.com/razor-dirt-quad-motor.html
 They will ship to Canada.

 Drawings at www.anvilus.com

 Frank can bore 35P sprockets to fit the 11mm shafts.

 Joe



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