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djkeev
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DanHoug
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Location: Bemidji, MN
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 Posted: Sat Oct 31, 2020 5:39 am Post subject: Re: Chevy electric crate engine kit |
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that Blazer they made is gorgeous and they've done suspension upgrades too. it would be interesting to test drive it.
how would regenerative braking work with rear wheel drive? all the FWD electrics can return the 75-90% of front braking energy back thru the electric drive train but a RWD is is only going to have 15-25% of the momentum for regen before the rear tires lock up. on a vehicle as heavy as a Vanagon, that would really be a hit on travel distance. a FWD Eurovan might be the better partner for that aspect alone.
anyway, very cool GM is offering these. a good sign and harkens back to the 'performance division' each marque had back in the day for the DIY'ers.
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60% of what you find on the internet is wrong, including this post.
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MarkWard
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Location: Retired South Florida
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| Posted: Sat Oct 31, 2020 5:49 am Post subject: Re: Chevy electric crate engine kit |
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Didn’t Kennedy have an adapter from the vw bell housing to a Chevy v8?
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Sodo
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Location: Western WA
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| Posted: Sat Oct 31, 2020 7:25 am Post subject: Re: Chevy electric crate engine kit |
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| DanHoug wrote: |
| how would regenerative braking work with rear wheel drive? all the FWD electrics can return the 75-90% of front braking energy back thru the electric drive train but a RWD is is only going to have 15-25% of the momentum for regen before the rear tires lock up. |
Wouldn't most of the regen occur during normal braking?
I wouldn't bemoan the loss of regen during full panic stops. 
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valvecovergasket
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Joined: October 10, 2018
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Location: pnw
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| Posted: Sat Oct 31, 2020 11:16 am Post subject: Re: Chevy electric crate engine kit |
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| Sodo wrote: |
| DanHoug wrote: |
| how would regenerative braking work with rear wheel drive? all the FWD electrics can return the 75-90% of front braking energy back thru the electric drive train but a RWD is is only going to have 15-25% of the momentum for regen before the rear tires lock up. |
Wouldn't most of the regen occur during normal braking?
I wouldn't bemoan the loss of regen during full panic stops. |
A large part of the appeal to EV driving in my eyes has always been the one pedal driving. Being able to control the speed completely with the throttle is awesome. You hardly even use the normal brakes except for the very last couple mph in non panic stops.
We had a leased Spark EV and almost always drove it in "low" mode where it had max regen, for that one pedal feel.
But yeah without a good tie in to some traction control or individual wheel speed sensors, it'd be tough to fully utilize that in a drop in application like this crate setup.
I'm really intrigued by this as I think it's a cool strategy by gm to get more gearheads thinking about ev potential.
I'm also really curious to see the install details, where we can get answers to questions like the regen capability... if they even release them (since commissioning this is a bit more dangerous than firing up a small block ha) one of the articles mentioned this having to go through approved/trained install shops
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djkeev
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Glenn 
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DanHoug
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Location: Bemidji, MN
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| Posted: Sat Oct 31, 2020 1:48 pm Post subject: Re: Chevy electric crate engine kit |
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| djkeev wrote: |
I don't kniw exactly how my Prius regens but it isn't at the wheels.
Dave |
right. it is within the traction motor. on decceleration, the computer tells the electric motor to become a generator instead and so applies 'braking' force to the front wheels (only) as electricity is generated at the expense of forward momentum. the rears are just conventional drum brakes with no regenerative ability.
got a crashed 2005 Prius in the shed with an intact drivetrain... oh for the time for such silly projects.
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60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
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valvecovergasket
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| Posted: Sat Oct 31, 2020 2:07 pm Post subject: Re: Chevy electric crate engine kit |
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| djkeev wrote: |
I don't kniw exactly how my Prius regens but it isn't at the wheels.
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The wheels are still the only way that road force finds it way back into the system 
It needs to know to modulate that braking action in limited traction environments.
Our spark could lock the wheels up "braking" in low mode on wet and snowy roads especially once the tires were a bit worn in. It would limit braking once it knew you were sliding.
Anyway, random ramblings...I'm sure they've thought of this! Easiest way would be to cap the max braking action and avoid possible lock up that way, with a slight hit to range. I think this will be cool to keep an eye on as they make their way out into the world!
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djkeev
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Robw_z
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| Posted: Sat Oct 31, 2020 3:10 pm Post subject: Re: Chevy electric crate engine kit |
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| djkeev wrote: |
That's good for your Beetle Glenn, but the height is probably a real issue to slip one into a Vanagon.
Dave |
It seems the upper portion, above the "black plate thing", may be modular and could be remounted lower and away from the engine with some ingenuity.
-Rob |
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Glenn
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Joined: December 25, 2001
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| Posted: Sun Nov 01, 2020 6:25 am Post subject: Re: Chevy electric crate engine kit |
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| djkeev wrote: |
That's good for your Beetle Glenn, but the height is probably a real issue to slip one into a Vanagon.
Dave |
Dave,
The first link is from VWoA and states:
"Volkswagen of America joined in last year, commissioning California-based electric vehicle conversion specialist EV West to build a one-off concept vehicle by merging a 1972 Type 2 Microbus with the modern electric powertrain of a 2017 e-Golf."
So if it could be made it fit a Bay Window it could be made to fit a Vanagon.
It would b nice to keep a VW.. all VW 
Just saying....
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Glenn
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