I saw that /drive video on the mtech II cabrio that was converted to electric drive (and I think the builder had a thread here, too?). That video is 2 years old now, wondering if anybody else is working on electric conversions? It would be cool to see what other people are coming up with, like if there's a way to design or customize battery cells to more tightly fit the e30 so you don't have to sacrifice so much trunk space.
Announcement
Collapse
No announcement yet.
Any more electric e30 conversions?
Collapse
X
-
You won't likely see a lot of EV E30 swaps. E30s are small cars, so you have to choose between poor range, sacrificing the trunk, or splitting the batteries up between fuel tank, trunk, and under-hood placement which significantly increases the complexity of the build. Batteries are massively inefficient as a store of energy per unit mass or volume when compared to gasoline so as EV conversions get more popular you're inherently going to see less of that in small cars which don't have a lot of free space for big boxy batteries.
Originally posted by packratbimmer View PostDo front wheel drive and make a custom driveshaft tunnel battery. I have been thinking, half-seriously, about a front drive VW TDI conversion on one of my iX cars for MPG/range extension.
IG @turbovarg
'91 318is, M20 turbo
[CoTM: 4-18]
'94 525iT slicktop, M50B30 + S362SX-E, 600WHP DD or bust - updated 1-26
- Likes 1
Comment
-
there's a student project going on local. they are converting an old volvo wagon. they are sort of approaching it as a resto-mod, keeping key original pieces and restoring a few. the power train changes but they are keeping suspension changes to a minimum. this is just a local engineering / mechanic college thing, but i guess old volvo wagons are kind of a popular choice for conversion. there's a couple places specializing now.
Comment
-
Mate Rimac (guy who started the supercar EV company, Rimac), started his first build on an e30. Assuming most people already know this, but I love this car, so here's the link....
Sveta Nedelja, October 12th, 2012. -- Rimac Automobili is proudly announcing that the Rimac e-M3 has broken several world acceleration records. The records a...
- Likes 2
Comment
-
Right now EV-swapped E30s are only in the realm of the rich, at least if you want something that can go 100+ miles on a single charge. So there aren't many of them right now. Affordable EV swaps that get 200+ miles of range are at least 10-15 years away; we need to wait for solid state batteries to become mainstream and affordable. By then you'll see a lot more EV-swapped E30s
A cheap EV swapped E30 would be something like a forklift DC motor and 10-12 lead-acid batteries. This will probably cost $10k-15k just for the swap if you have a shop do it. Such a car would only get 30-40 miles of range at best. A better-equipped swap would be a Hyper9 AC motor with crashed Tesla batteries - total cost for this could be triple the previous option.Last edited by ZeKahr; 11-21-2021, 05:13 PM.1986 325e Schwarz (sold)
1989 325iX Alpineweiß (daily)
Greed is Good
Comment
-
Originally posted by ZeKahr View PostRight now EV-swapped E30s are only in the realm of the rich, at least if you want something that can go 100+ miles on a single charge. So there aren't many of them right now. Affordable EV swaps that get 200+ miles of range are at least 10-15 years away; we need to wait for solid state batteries to become mainstream and affordable. By then you'll see a lot more EV-swapped E30s
A cheap EV swapped E30 would be something like a forklift DC motor and 10-12 lead-acid batteries. This will probably cost $10k-20k just for the swap if you have a shop do it. Such a car would only get 30-40 miles of range at best. A better-equipped swap would be a Hyper9 AC motor with crashed Tesla batteries - total cost for this could be triple the previous option.
You can source motors/batteries from other EVs for a total of under 10k. Sure you'll pay closer to 30k if you want a shop to do all the work, but wrenchers have done their own EV builds at home for 10k. That's with actual EV motors and battery packs (tesla motors/gm packs most common combo i've seen). That'll be good for 100 or so miles.
Ford has even started selling an electric crate motor for under 4k that's good for ~300 hp and ~300 ft/lbs.
Comment
-
Originally posted by ElJimo View Post
What're you on about?
You can source motors/batteries from other EVs for a total of under 10k. Sure you'll pay closer to 30k if you want a shop to do all the work, but wrenchers have done their own EV builds at home for 10k. That's with actual EV motors and battery packs (tesla motors/gm packs most common combo i've seen). That'll be good for 100 or so miles.
Ford has even started selling an electric crate motor for under 4k that's good for ~300 hp and ~300 ft/lbs.1986 325e Schwarz (sold)
1989 325iX Alpineweiß (daily)
Greed is Good
Comment
-
Originally posted by ElJimo View Post
What're you on about?
You can source motors/batteries from other EVs for a total of under 10k. Sure you'll pay closer to 30k if you want a shop to do all the work, but wrenchers have done their own EV builds at home for 10k. That's with actual EV motors and battery packs (tesla motors/gm packs most common combo i've seen). That'll be good for 100 or so miles.
Ford has even started selling an electric crate motor for under 4k that's good for ~300 hp and ~300 ft/lbs.
The age old quote applies "think of a budget for your project car and triple it"
EV conversions are getting cheaper, but to make something good is going to take hours and hours of work. and its not just welding stuff. lot of technical electronic wizardry required.
The cabri e30 that was mentioned, he has an instagram called "tesla_bimmer". hes always doing lots of tech things, making PCBs, programming arduinos, playing with can bus. these little things are going to be what makes your Ev conversion nice to use as a car. like al conversions. Getting it to drive is probably only 30% of the work.
EV conversion is going to be completely custom everything, so nothing special about the E30 either way. Maybe a 5 series would be a better choice, cheaper and more room.
RWD seems to be the obvious choice as you can just make a replacement rear subframe that has the elec motor and drive shafts etc. All in one.
Probably better off buying any number of new smallish EVs if you really want electric though.
Comment
-
I'm not doing an e30 conversion but a 1993 Rx7. I was inspired by the TeslaE30 you're talking about.
I really like the tesla drive unit route because it gets rid of all the dead weight of the transmission and diff and it's an OEM part that comes with OEM reliability (debatable). The real hard part is that if you go Tesla, you need 360v of batteries and you can't fit a full Tesla pack in a car as small as an e30. So you have to go with Volt, Leaf, or LG Chem batteries that are OEM or buy off the shelf batteries, such as those from ElectricGT. On my Rx7 I have 42 kwH which will hopefully be good for 120-150 miles and it stays in the engine/trans areas. I'm into the swap for 20-25k. You could easily fit even more in an e30...the Rx7 is considerably smaller.
It took me months to modify the rear subframe on the Rx7 to fit the Tesla motor. Major cutting. The e30 would be 10x easier with the trailing arm suspension. You could slap together an e30 swap with a Tesla motor and 2x Volt battery packs for cheap and have a ball. Or people are using GS450h transmissions as the power unit or Leaf motors, etc. For even cheaper.
350 Followers, 455 Following, 54 Posts - See Instagram photos and videos from Ryan McDermott (@rjmsgarage)
Here's my build thread. Tons of good EV swap projects on here, including some e30's: https://openinverter.org/forum/viewt...hp?f=11&t=1244
Comment
-
Originally posted by 2mAn View PostJust buy an i3, it’s basically an EV E30
- Likes 2
Comment
Comment