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Re: (ET) Prefer to back up faster.... E20



Hi,
I'm not sure how the E20 foot controlled wiring compares to the New Idea 150. 
On the 150 if I manually engage the reverse switch trigger with a screwdriver and move the "throttle" forward I get 7 speeds in reverse. Seems like replacing the the reverse trigger  with a toggle switch for would do the trick.
Dean

On Feb 2, 2011, at 11:44 AM, Max Hall wrote:

I'm a Boston-area guy, so I'm pushing a lot of snow. ("snOMG!" "Snowmageddon!" etc.) And I really wish the higher speeds were available on my E20 for reverse!

I'm looking at the schematics, and it seems as if all one needs to do to have field-weakening for reverse as well as forward is to remove a single conductor on the F&R switch (more specifically, the portion of the F&R switch between P5-3 and P5-2 fed by wires 64 and 22-01) as it is a bypass for all of the field-weakining resistors.  It seems as if the high-current lock-out of field weakening would still work, too,  (FW coil between card 4 pins 13 and 20 is controlled partly by voltage across a shunt in series with the drive motor) as its circuitry is separate from the F/R stuff.

So:
Anyone done this? If so, am I barking up the right tree?
Anyone know why I wouldn't want to do this? (Apart from "backing up fast is scary"...)

Thanks, as ever, fellow ETers. Boy, am I working my E20 this winter... love that machine!

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