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Discussion Starter #1
Since I'm switching to a resistive, as opposed to inductive throttle soon, =
I'd like to have a replacement PB-6 pot at the ready for when this one wear=
s out. I've followed some of the threads, but here are my issues:- I don=
't need the PB-6 housing, just the pot. Anyone know the Digi-Key part nu=
mber?- How many miles have people gotten on average with the potbox setup? =
(Just cuiriousThanks!

Thinking about converting a gen. 5 ('92-95) Honda Civic? My $23 "CivicWith=
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ns. For more info, http://home.budget.net/~bbath/CivicWithACord.html

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Would you still drive your car if the tailpipe came out of the steering whe=
el?

OR Lic. "LCTRNS"





=

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70 Posts
Discussion Starter #2
Jeff Major wrote:
> The PB6 pot is special because it has the internal element set up for
> an 80 degree (approx) twist of the shaft. Standard pots use like a
> 270 degree rotation. It may be possible to use a standard pot with a
> higher resistance for the limited throw in the PB6 if you are using a
> 2 wire system.

Yes, I've used a 25k pot this way. Many EV controllers are set up for a
0-5k (or 5k-0) throttle input, so it works fine.

Don't use a cheap unsealed pot like Curtis and the clones (gee, that
sounds like a band :)

GE used a MIL-spec RV4N "extended life" Allen Bradley type "J" sealed
pot in their EV1 controller potboxes. They seem to last forever; I've
never seen one go bad (except from extreme mechanical abuse). They used
a pair of gears in their potboxes so a 1/4-turn of the lever arm rotates
the pot a full 300 deg.

PS: I have a GE potbox that I opened up to check on its wiring. It
turned out to be optical! The sliding shaft moved a metal shutter plate.
Holes in this plate were sensed by opto-interrupters. There was just a
tiny bit of logic to convert the gray code produced by the interrupters
into binary, which selected a 1-2-4-8 series of resistors. for the 0-5k
output.

--
Lee A. Hart | Ring the bells that still can ring
814 8th Ave N | Forget the perfect offering
Sartell MN 56377 | There is a crack in everything
leeahart earthlink.net | That's how the light gets in -- Leonard Cohen

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