I can pick up the 250 roller real cheap.. That's what got me thinking along
these lines.
Do it. Do it. Do it.
Anyone know of an available Ninja 750 roller?
I would go the EL Chopper route, but I don't know how far I want to get
into frame modification.
Pleaes don't fall into a Ninja only
How is that the battery instrument panel project coming along? Does
anyone know?
There's a couple of projects out there. On the EVTech listserve
they're developing a very nice one for cars though we could scale it
down for bikes. Then there's EM Dash of course but they guy who's
spear
Interesting thought started on that one, Mike. I like
that precooler so to speak.
I think Peltier exchangers would help in this
instance, but I would be concerned with the sudden
temp change on the brushes, i.e. cold to hot. Whether
I was thinking of something that is for pit use, ie not a
I haven't had an issue with melting Etek solder at momentary
currents up to 800 amps. The key is momentary. If I wanted cooling
though, I think I'd go with spraying CO2 on the motor during the
run. I have had the brushes and comm get warm, but there's enough
cooling between runs to take
Here's a couple of thoughts. First for the drag racer amongst us: What if
you could cool your motors before the race? I mean, like make some copper
coils that can slip over them in the pits that run off to a refrigerant and
get them really, really cold just before the run. Then slide the coils
Then of course time to purchase a (100 amp?) load tester
Got one of these myself:
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=91129 works
great for the price.
I don't think that an Etek at 48 volts will give you enough power. I have
heard that they melt down if you try
From Bidwels book Secrets of El Ninja the following data was taken from a
chart:
Voltage: 48
Weight: 456
Kilowatt-hours: 4.1 (likely flooded batteries)
Front # of teeth: 12
Rear # of teeth: 72
Drive Ratio: 6.0
Peak motor top speed (mph): 43
Actual top speed (mph): 43
Actual 0-30 mph (seconds): 7
The best bet is to do go the the 4qd website and do the calculations for the
ratio needed for you wheel size and desired speed. Front sprockets are cheap
~$10 each. I made is so my best guess gearing put a 13 tooth on the motor, but
I also have an 11 and 15 tooth sprocket which I actually do
To: ElectricMotorcycles
Sent: Friday, January 19, 2007 4:43 PM
Subject: Re: [ElectricMotorcycles] Ninja 250 conversion?
The best bet is to do go the the 4qd website and do the calculations for the
ratio needed for you wheel size and desired speed. Front sprockets are cheap
~$10 each. I made is so my best
Also don't forget about voltage sag as the batteries discharge. My bike is 72v
nominal. Coming off the charger is around 78 volts and if I discharge all the
way down to 10 volts per battery that is 60V (worst case). That is a pretty
wide top speed spread to keep in mind.
Here is the
I'd love to give Jim Husted at HiTorque a broken Etek and let him noodle on
how to beef it up. I suspect he would come back with a more durable motor.
- Mike B
still want to run some eteks at 96V. I think with my duty
cycle they should work out great.
- Original Message -
From: [EMAIL PROTECTED]
To: listserv@electricmotorcycles.net
Sent: Thursday, January 18, 2007 9:08 AM
Subject: Re: [ElectricMotorcycles] Ninja 250 conversion
what
constitutes a fun ride for you.
damon
From: Steve Parker [EMAIL PROTECTED]
Reply-To: ElectricMotorcycles listserv@electricmotorcycles.net
To: ListServ@ElectricMotorcycles.Net
Subject: [ElectricMotorcycles] Ninja 250 conversion?
Date: Wed, 17 Jan 2007 13:51:19 -0600
I'm thinking of doing
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