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Old 11-24-2018, 09:50 PM   #1 (permalink)
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GM Getting into the EV Conversion Business?

GM electric crate motor, anyone?
https://youtu.be/ilZ_fb75j_8

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Old 11-24-2018, 10:55 PM   #2 (permalink)
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An electric motor that bolts up to a GM transmission would solve a problem of problems.
The T-10 4 speed manual would be more than enough gears.
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Old 11-24-2018, 11:03 PM   #3 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
An electric motor that bolts up to a GM transmission would solve a problem of problems.
The T-10 4 speed manual would be more than enough gears.
With peak torque from 1-9000 rpm, you would use only one or two of those four gears.
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Old 11-24-2018, 11:18 PM   #4 (permalink)
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Well I can't recall any 2 or 3 speed manuals.
Now I have heard rumors of torque converterless 2 speed powerglide transmissions set up for electric drag racing.
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Old 11-25-2018, 02:58 PM   #5 (permalink)
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Quote:
Originally Posted by oil pan 4
Well I can't recall any 2 or 3 speed manuals.
I think you'd have to go back to the 1960s and "three on the tree". Though this link says you could find them on trucks up until the '80s: https://autoweek.com/article/classic...nuals-1986-yes
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Old 11-25-2018, 08:18 PM   #6 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
Well I can't recall any 2 or 3 speed manuals.
Now I have heard rumors of torque converterless 2 speed powerglide transmissions set up for electric drag racing.
I can, but they were on antiques

My dad had an old car with 3 on the tree

Model T’s had a “three” speed
2 forward and
1 reverse
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Old 11-25-2018, 08:53 PM   #7 (permalink)
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Quote:
Originally Posted by mechman600 View Post
With peak torque from 1-9000 rpm, you would use only one or two of those four gears.
The torque falls off as the motor gains RPM. All electric motors have peak torque at stall. A continuously variable transmission, keeping the motor near stall with acceleration, would give the best acceleration.
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Old 11-25-2018, 09:35 PM   #8 (permalink)
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I don't think a 3 on the tree was ever made that can handle that torque.
A 4 on the floor T-10 should be able to handle that torque if it's a high dollar one.
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Old 11-26-2018, 03:14 AM   #9 (permalink)
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Using a tranny is a good idea if you're using a low-powered or marginally-powered motor.

I've driven conversions that use the stock five speed on economy cars. You start in 2nd or 3rd, but you still have 1st for climbing hills and steep ramps.

Not a bad way to do it.
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Old 11-26-2018, 08:59 PM   #10 (permalink)
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Quote:
Originally Posted by niky View Post
Using a tranny is a good idea if you're using a low-powered or marginally-powered motor.
That's a good point. Well, some engines used in conversions may eventually not be meant to be directly reversible, and then a transmission becomes a must. I don't remember when it was done, but someone converted an Opel Astra to electric here in Brazil with a 20hp engine and claimed to have retained the transmission mostly because the engine wouldn't operate properly on reverse...

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