Re: (ET) E8 power control

["Bob Murcek" <rmurcek geisinger edu>]

Ya know, putting a controller on an E8 is actually a bigger benefit than 
putting one on one of the larger tractors since it allows elimination of 
the clutch!

>>> Christopher Zach <czach computer org> 9/1/2004 4:44:12 PM >>>
Actually the speed control on all but the 15 and 20 was resistors in 
series with the armature. The 15 and 20 also had field weakening for the 
higher speeds along with circuitry to shut down FW if the current draw 
to the armature became too high (say going up a molehill)

The E8 is pretty much as simple as you can get; one motor speed, with 
the slack taken up by the clutch and a little transmission to provide 
torque/speed. It runs the motor full armature voltage/fixed field.

I'd guess the current to be less than my E20, which is around 175amps 
full blast (more with the snowblower, but I have yet to blow snow in 
D2/Speed 8 :-) So a 150 amp controller would probably do it.

Chris

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