Well, I got some great news today!
We took the truck in to Automatic Transmission Design down in Germantown, WI back in July
-- They were recommended by another shop because they do a lot of work with racing
vehicles and were more likely to have dealt with Halibrand-made parts.
Charlie at ATD confirmed that the differential is a Halibrand variant, and it took them a
few weeks to get to the truck, but today he let me know that it's fixed! Turns out that
there was no damage to the differential other than the pinion gear bearings, which they
replaced. What a relief! We've really missed having the truck here -- we use it a LOT --
and I can't wait to have it back and running as silent as before (except for the drive
belt whine).
We're planning to take it to the Drive Electric Week event next month in Jackson, WI,
along with our Model 3. With its new lithium-ion battery pack, it's got exceptional range
and a new lease on life.
-Tom
On 7/6/2019 8:49 PM, Jim via EV wrote:
Subject: [EVDL] Differential issue
Hi All,Our 1995 Solectria E10 (converted Chevy S10) has a failing
>>differential.
This car has a very high ratio in the differential. Something like ~8:1.
Most ICE vehicles have ~3:1 or 4:1.
The gears may prove difficult to replace. I would start by replacing all
the standard, more ordinary parts, like the bearings. Replacing the
bearings may add some life to the worn gears.
Here is an Ebay listing for your gear box:
https://www.ebay.com/itm/azure-dynamics-solectria-at1200-gear-box-with-park-pawl-10-1/123007116723?hash=item1ca3cba5b3:g:V2wAAOSwx7VaoEH4
I would snap that up if I were you. :-)
Here is a motor and gear box from the same seller:
https://www.ebay.com/itm/AZURE-DYNAMICS-SOLECTRIA-AC24LS-W-AT1200-12-1-GEAR-BOX-/123791157714?vxp=mtr&hash=item1cd28729d2
I would also highly recommend putting in Schaeffer Oil brand gearlube,
instead of the ordinary parts store gear lube you are running. Don't
know what they put in it, but it is superior.
https://www.schaefferoil.com/
The Solectria E-10 did not use a transaxle.. as David correctly pointed out,
it has a differential that was reversed from the original position. the Pinion
faces the rear of the truck and is driven from a central hub via a short
driveshaft, (between the motors), from a gilmer,(toothed), belt set, one from
each of the two motors, (which also face the rear bumper).
One of my two E-10's has the original differential and one has a standard 8.5"
GM unit that is NOT reversed but still drives from the rear. This was accomplished
by blocking off the forward facing pinion and removing the rear cover, then
engineering/machining a new section to carry the pinion.
This was done before I purchased the truck, presumably by the original owner
which was APS, our power company.
Both differentials have about the same ratio of around 3.70:1. Along with the
reduction of the belt drive/driven pulleys enables an overall ratio of about
9.0:1.
I would think a good differential repair shop would be able to rebuild it.
Jim
(To see the APS truck's diff.)
www.evalbum.com/1703
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