[TANKS] Re: Differentials
What about multiple servos? 2 for each wheel or similar On Oct 25, 8:29 pm, Paul Hilton phil...@defnet.com wrote: Run with it, Derek. We'll be watching... Paul H. - Original Message - From: Derek Engelhaupt To: rctankcombat@googlegroups.com Sent: Sunday, October 25, 2009 4:10 PM Subject: [TANKS] Re: Differentials Now that the family and I are back from the Caribbean, I can add my two cents. I bought a couple of riding scooter (type used for people that have difficulty walking) differentials to play with. They are a limited slip type with a single motor. They are heavy (15lbs/per differential), but I think the heaviness could aide in traction for a battle vehicle. I was going to play with a seesaw type of suspension and use two of them on a vehicle so I could get 4 wheel drive. I do agree that the complexity of the steering and suspension of a wheeled vehicle is more daunting that actually creating a tracked vehicle. In order to steer the vehicle, I would need to make one of those heavy duty steering servos using a geared motor and a standard r/c servo. Building a wheeled vehicle is pretty low on my list of projects though. Derek T065 On Wed, Oct 21, 2009 at 10:02 AM, Doug Conn dwconn...@comcast.net wrote: We talked about self-propelled lawnmower differentials like the ones they sell at Surplus Center. It turns out that they cannot go in reverse with some mechanical modifications. - Doug From: rctankcombat@googlegroups.com [mailto:rctankcom...@googlegroups.com] On Behalf Of mac wynkoop Sent: Tuesday, October 20, 2009 6:25 PM To: rctankcombat@googlegroups.com Subject: [TANKS] Re: Differentials Well, not too long ago I saw a differential on my neighbor's self-propelled lawn mower. It looked like it would fit a tank perfectly. Maybe I should ask him if he wouldn't mind pushing it again... On Tue, Oct 20, 2009 at 12:26 PM, Steve Tyng steve...@gmail.com wrote: I have given the subject of differentials in a 1:6 scale r/c combat vehicles some thought over the years. At one point I was interested in building an armored car (AC) and may still do so. I looked at the various differentials currently available and have yet to find one that I feel is appropriate for our vehicles. On the heavy end are the differentials built for go-karts. These are to large for a typical 1:6 scale AC and have monster 3/4 or 1 output shafts. On the other end of the spectrum are the hobby differentials produced for monster scale r/c trucks. I've looked at these and weren't impressed with there robustness and many plastic parts. I have seen references to differentials for 1/4 scale r/c sand buggy's that sounded good but they were on a German site with little info and the pricing looked to be exorbitant. IMO the best option will be a dual motor setup (or quad motors for 4wd) driven from one speed controller. This electronic differential provides the same functionality as a mechanical one in that it provides varying power to the left or right drive wheels depending on load. It can be built as robust as required much as we build our drive-trains currently. The issue will be finding the appropriate motors for such a scheme. The motors will need to be relatively powerful and small to fit into the smaller chassis. For this all we need to do is look to the new electric skateboard sport where small high-powered motors of up to 600 watts can be found. While on Allellectonics.com the other day I noted a nice 135 watt motor that that I have seen used on electric skateboards and may prove to be ideal for the smaller wheeled r/c combat vehicle. http://www.allelectronics.com/make-a-store/item/DCM-130/24VDC-135W-MO... If I were to start building an AC tomorrow I'd get two of these motors and a single reversing scooter controller and design an AC around that. Steve Tyng --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
[TANKS] Re: Differentials
Now that the family and I are back from the Caribbean, I can add my two cents. I bought a couple of riding scooter (type used for people that have difficulty walking) differentials to play with. They are a limited slip type with a single motor. They are heavy (15lbs/per differential), but I think the heaviness could aide in traction for a battle vehicle. I was going to play with a seesaw type of suspension and use two of them on a vehicle so I could get 4 wheel drive. I do agree that the complexity of the steering and suspension of a wheeled vehicle is more daunting that actually creating a tracked vehicle. In order to steer the vehicle, I would need to make one of those heavy duty steering servos using a geared motor and a standard r/c servo. Building a wheeled vehicle is pretty low on my list of projects though. Derek T065 On Wed, Oct 21, 2009 at 10:02 AM, Doug Conn dwconn...@comcast.net wrote: We talked about self-propelled lawnmower differentials like the ones they sell at Surplus Center. It turns out that they cannot go in reverse with some mechanical modifications. -Doug *From:* rctankcombat@googlegroups.com [mailto: rctankcom...@googlegroups.com] *On Behalf Of *mac wynkoop *Sent:* Tuesday, October 20, 2009 6:25 PM *To:* rctankcombat@googlegroups.com *Subject:* [TANKS] Re: Differentials Well, not too long ago I saw a differential on my neighbor's self-propelled lawn mower. It looked like it would fit a tank perfectly. Maybe I should ask him if he wouldn't mind pushing it again... On Tue, Oct 20, 2009 at 12:26 PM, Steve Tyng steve...@gmail.com wrote: I have given the subject of differentials in a 1:6 scale r/c combat vehicles some thought over the years. At one point I was interested in building an armored car (AC) and may still do so. I looked at the various differentials currently available and have yet to find one that I feel is appropriate for our vehicles. On the heavy end are the differentials built for go-karts. These are to large for a typical 1:6 scale AC and have monster 3/4 or 1 output shafts. On the other end of the spectrum are the hobby differentials produced for monster scale r/c trucks. I've looked at these and weren't impressed with there robustness and many plastic parts. I have seen references to differentials for 1/4 scale r/c sand buggy's that sounded good but they were on a German site with little info and the pricing looked to be exorbitant. IMO the best option will be a dual motor setup (or quad motors for 4wd) driven from one speed controller. This electronic differential provides the same functionality as a mechanical one in that it provides varying power to the left or right drive wheels depending on load. It can be built as robust as required much as we build our drive-trains currently. The issue will be finding the appropriate motors for such a scheme. The motors will need to be relatively powerful and small to fit into the smaller chassis. For this all we need to do is look to the new electric skateboard sport where small high-powered motors of up to 600 watts can be found. While on Allellectonics.com the other day I noted a nice 135 watt motor that that I have seen used on electric skateboards and may prove to be ideal for the smaller wheeled r/c combat vehicle. http://www.allelectronics.com/make-a-store/item/DCM-130/24VDC-135W-MOTOR-W/-BELT-GEAR/1.html If I were to start building an AC tomorrow I'd get two of these motors and a single reversing scooter controller and design an AC around that. Steve Tyng --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
[TANKS] Re: Differentials
Run with it, Derek. We'll be watching... Paul H. - Original Message - From: Derek Engelhaupt To: rctankcombat@googlegroups.com Sent: Sunday, October 25, 2009 4:10 PM Subject: [TANKS] Re: Differentials Now that the family and I are back from the Caribbean, I can add my two cents. I bought a couple of riding scooter (type used for people that have difficulty walking) differentials to play with. They are a limited slip type with a single motor. They are heavy (15lbs/per differential), but I think the heaviness could aide in traction for a battle vehicle. I was going to play with a seesaw type of suspension and use two of them on a vehicle so I could get 4 wheel drive. I do agree that the complexity of the steering and suspension of a wheeled vehicle is more daunting that actually creating a tracked vehicle. In order to steer the vehicle, I would need to make one of those heavy duty steering servos using a geared motor and a standard r/c servo. Building a wheeled vehicle is pretty low on my list of projects though. Derek T065 On Wed, Oct 21, 2009 at 10:02 AM, Doug Conn dwconn...@comcast.net wrote: We talked about self-propelled lawnmower differentials like the ones they sell at Surplus Center. It turns out that they cannot go in reverse with some mechanical modifications. -Doug From: rctankcombat@googlegroups.com [mailto:rctankcom...@googlegroups.com] On Behalf Of mac wynkoop Sent: Tuesday, October 20, 2009 6:25 PM To: rctankcombat@googlegroups.com Subject: [TANKS] Re: Differentials Well, not too long ago I saw a differential on my neighbor's self-propelled lawn mower. It looked like it would fit a tank perfectly. Maybe I should ask him if he wouldn't mind pushing it again... On Tue, Oct 20, 2009 at 12:26 PM, Steve Tyng steve...@gmail.com wrote: I have given the subject of differentials in a 1:6 scale r/c combat vehicles some thought over the years. At one point I was interested in building an armored car (AC) and may still do so. I looked at the various differentials currently available and have yet to find one that I feel is appropriate for our vehicles. On the heavy end are the differentials built for go-karts. These are to large for a typical 1:6 scale AC and have monster 3/4 or 1 output shafts. On the other end of the spectrum are the hobby differentials produced for monster scale r/c trucks. I've looked at these and weren't impressed with there robustness and many plastic parts. I have seen references to differentials for 1/4 scale r/c sand buggy's that sounded good but they were on a German site with little info and the pricing looked to be exorbitant. IMO the best option will be a dual motor setup (or quad motors for 4wd) driven from one speed controller. This electronic differential provides the same functionality as a mechanical one in that it provides varying power to the left or right drive wheels depending on load. It can be built as robust as required much as we build our drive-trains currently. The issue will be finding the appropriate motors for such a scheme. The motors will need to be relatively powerful and small to fit into the smaller chassis. For this all we need to do is look to the new electric skateboard sport where small high-powered motors of up to 600 watts can be found. While on Allellectonics.com the other day I noted a nice 135 watt motor that that I have seen used on electric skateboards and may prove to be ideal for the smaller wheeled r/c combat vehicle. http://www.allelectronics.com/make-a-store/item/DCM-130/24VDC-135W-MOTOR-W/-BELT-GEAR/1.html If I were to start building an AC tomorrow I'd get two of these motors and a single reversing scooter controller and design an AC around that. Steve Tyng --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
[TANKS] Re: Differentials
Well, not too long ago I saw a differential on my neighbor's self-propelled lawn mower. It looked like it would fit a tank perfectly. Maybe I should ask him if he wouldn't mind pushing it again... On Tue, Oct 20, 2009 at 12:26 PM, Steve Tyng steve...@gmail.com wrote: I have given the subject of differentials in a 1:6 scale r/c combat vehicles some thought over the years. At one point I was interested in building an armored car (AC) and may still do so. I looked at the various differentials currently available and have yet to find one that I feel is appropriate for our vehicles. On the heavy end are the differentials built for go-karts. These are to large for a typical 1:6 scale AC and have monster 3/4 or 1 output shafts. On the other end of the spectrum are the hobby differentials produced for monster scale r/c trucks. I've looked at these and weren't impressed with there robustness and many plastic parts. I have seen references to differentials for 1/4 scale r/c sand buggy's that sounded good but they were on a German site with little info and the pricing looked to be exorbitant. IMO the best option will be a dual motor setup (or quad motors for 4wd) driven from one speed controller. This electronic differential provides the same functionality as a mechanical one in that it provides varying power to the left or right drive wheels depending on load. It can be built as robust as required much as we build our drive-trains currently. The issue will be finding the appropriate motors for such a scheme. The motors will need to be relatively powerful and small to fit into the smaller chassis. For this all we need to do is look to the new electric skateboard sport where small high-powered motors of up to 600 watts can be found. While on Allellectonics.com the other day I noted a nice 135 watt motor that that I have seen used on electric skateboards and may prove to be ideal for the smaller wheeled r/c combat vehicle. http://www.allelectronics.com/make-a-store/item/DCM-130/24VDC-135W-MOTOR-W/-BELT-GEAR/1.html If I were to start building an AC tomorrow I'd get two of these motors and a single reversing scooter controller and design an AC around that. Steve Tyng --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
[TANKS] Re: Differentials
We talked about self-propelled lawnmower differentials like the ones they sell at Surplus Center. It turns out that they cannot go in reverse with some mechanical modifications. -Doug From: rctankcombat@googlegroups.com [mailto:rctankcom...@googlegroups.com] On Behalf Of mac wynkoop Sent: Tuesday, October 20, 2009 6:25 PM To: rctankcombat@googlegroups.com Subject: [TANKS] Re: Differentials Well, not too long ago I saw a differential on my neighbor's self-propelled lawn mower. It looked like it would fit a tank perfectly. Maybe I should ask him if he wouldn't mind pushing it again... On Tue, Oct 20, 2009 at 12:26 PM, Steve Tyng steve...@gmail.com wrote: I have given the subject of differentials in a 1:6 scale r/c combat vehicles some thought over the years. At one point I was interested in building an armored car (AC) and may still do so. I looked at the various differentials currently available and have yet to find one that I feel is appropriate for our vehicles. On the heavy end are the differentials built for go-karts. These are to large for a typical 1:6 scale AC and have monster 3/4 or 1 output shafts. On the other end of the spectrum are the hobby differentials produced for monster scale r/c trucks. I've looked at these and weren't impressed with there robustness and many plastic parts. I have seen references to differentials for 1/4 scale r/c sand buggy's that sounded good but they were on a German site with little info and the pricing looked to be exorbitant. IMO the best option will be a dual motor setup (or quad motors for 4wd) driven from one speed controller. This electronic differential provides the same functionality as a mechanical one in that it provides varying power to the left or right drive wheels depending on load. It can be built as robust as required much as we build our drive-trains currently. The issue will be finding the appropriate motors for such a scheme. The motors will need to be relatively powerful and small to fit into the smaller chassis. For this all we need to do is look to the new electric skateboard sport where small high-powered motors of up to 600 watts can be found. While on Allellectonics.com the other day I noted a nice 135 watt motor that that I have seen used on electric skateboards and may prove to be ideal for the smaller wheeled r/c combat vehicle. http://www.allelectronics.com/make-a-store/item/DCM-130/24VDC-135W-MOTOR-W/- BELT-GEAR/1.html If I were to start building an AC tomorrow I'd get two of these motors and a single reversing scooter controller and design an AC around that. Steve Tyng --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
[TANKS] Re: Differentials
: Does anyone bother having differentials in their wheeled vehicles? On my staghound (SV6) I used a solid axle driving both rear wheels. Since all the battles are on dirt/grass some tire scrubbing while turning is not noticed. --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
[TANKS] Re: Differentials
I guess someone could take the rear axle from an RC buggy/monster truck etc and modify it to be more suited for these vehicles. Only work on smaller vehicles though i should think because those diffs are small On 20 Oct, 15:07, steve sbut...@fedcoelectronics.com wrote: : Does anyone bother having differentials in their wheeled vehicles? On my staghound (SV6) I used a solid axle driving both rear wheels. Since all the battles are on dirt/grass some tire scrubbing while turning is not noticed. --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
[TANKS] Re: Differentials
I have given the subject of differentials in a 1:6 scale r/c combat vehicles some thought over the years. At one point I was interested in building an armored car (AC) and may still do so. I looked at the various differentials currently available and have yet to find one that I feel is appropriate for our vehicles. On the heavy end are the differentials built for go-karts. These are to large for a typical 1:6 scale AC and have monster 3/4 or 1 output shafts. On the other end of the spectrum are the hobby differentials produced for monster scale r/c trucks. I've looked at these and weren't impressed with there robustness and many plastic parts. I have seen references to differentials for 1/4 scale r/c sand buggy's that sounded good but they were on a German site with little info and the pricing looked to be exorbitant. IMO the best option will be a dual motor setup (or quad motors for 4wd) driven from one speed controller. This electronic differential provides the same functionality as a mechanical one in that it provides varying power to the left or right drive wheels depending on load. It can be built as robust as required much as we build our drive-trains currently. The issue will be finding the appropriate motors for such a scheme. The motors will need to be relatively powerful and small to fit into the smaller chassis. For this all we need to do is look to the new electric skateboard sport where small high-powered motors of up to 600 watts can be found. While on Allellectonics.com the other day I noted a nice 135 watt motor that that I have seen used on electric skateboards and may prove to be ideal for the smaller wheeled r/c combat vehicle. http://www.allelectronics.com/make-a-store/item/DCM-130/24VDC-135W-MOTOR-W/-BELT-GEAR/1.html If I were to start building an AC tomorrow I'd get two of these motors and a single reversing scooter controller and design an AC around that. Steve Tyng --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
[TANKS] Re: Differentials
callum.king.underw...@googlemail.com wrote: Havent seen any on the main site. Doesnt mean there arent any though On Oct 18, 1:40 am, Gregory Pwneror sockles...@gmail.com wrote: Does anyone bother having differentials in their wheeled vehicles? Most electric vehicles use different motors to drive the left/right sides (or different motors for all wheels), so a differential is not required. Vehicles that drive the rear wheels from a single motor and use a steering mechanism in the front never work properly on the battlefield, so a differential is not required in that case either :-) Frank P. --~--~-~--~~~---~--~~ You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~--~~~~--~~--~--~---
