Re: motors/torque

[Frank Pittelli <frank-at-rctankcombat.com>]

SUSAN GUTBRODT wrote:
> Another question now is how available are the EV's and for how long??? 
> Remember, these motors were surplus and are out of production...The key 
> now is to ascertain the next motor...

The EV availability issue falls into three categories:

1) Finding surplus "EV Warriors":  the supply of surplus motors 
originally produced for the EV Warrior bicycle are clearly decreasing 
and it probably won't be long before it is depleted, given their 
popularity with the robot guys.

2) Finding "EV Warrior" equivalents:  apparently the EV Warrior was 
either derived from or is the same as a Bosch motor sold as either the 
blower fan or cooling fan for a Ford Bronco.  So, in theory we should be 
able to track down either the Ford part number itself or the replacement 
part number and then locate a supplier for them.  Anyone with expertise 
in locating parts for trucks should be able to track it down 
(unfortunately, I can't find an Internet resource that can answer that 
question).

3) Replacement motors:  there are an increasing number of strong motors 
being sold for electric scooters (already mentioned by various people on 
the mailing list).  Many of these motors are more powerful than the EV 
Warrior and some include gears as well.  It remains for people to start 
giving them a try (just like we did with Kiddie Car Motors, drill motors 
and EV Warriors) so that we get some real-world data to go by.  Steve's 
recent information about power/weight ratios should help reduce the 
number of tests needed, but we'll still need people to step up to the 
plate and take a swing to see what happens.  The increasing popularity 
of electric scooters should keep the supplies high and prices 
competitive for a long time to come.

        Frank P.