Hi, I'm (still) doing a conversion of an old Fiat 126, now using an Outlander rear motor. I need to connect the outlander rear driveshafts to the Fiat hubs. I could do the old cut and shut job on the driveshafts, but was wondering if anyone has found an engineering place that would take an existing...

Just thinking out loud! 1: How about an oil/ATF cooled rotor rather than coolant? I would think much less likely to leak - at the expense of lower heat transfer. 2: How does the model 3 front drive unit cool? This is also an induction motor - so will also get heated - and I can't see any coolant fit...

Okay, so for fitting the battery, I've been playing Battery Tetris for a while and have a few options. Some of them I like, others not so much. Given that I really don't need a lot of range, I would like to keep the weight of the battery to a minimum - but I also need enough voltage to reach a top ...

Academic papers and seal manufacturers say all seals leak. The key is the acceptable leak rate. Perhaps any seal we put in will leak at some rate. Anyway, Ceimin seal at 2k miles has no coolant drops on speed sensor. This is key: At some point any rotary seal will leak. There are no rotary seals in...

So on the unsprung weigh front I believe it’s more of a ratio thing, I don’t know where the sweet spot is supposed to be but I know big unsprung weight on a light car = bad the same unsprung weight on a heavy car not so much…. Using my Seat Leon for a thought experiment: It has a common 225 45 17 t...

The problem with removing the gear reduction is that electric motor torque scales with mass of electric motors. You need high torque and low speed for directly driving the wheels = heavy electric motor/ all of which is un-sprung weight which is very bad for vehicle driving dynamics/refinement. Havi...

The problem with removing the gear reduction is that electric motor torque scales with mass of electric motors. You need high torque and low speed for directly driving the wheels = heavy electric motor/ all of which is un-sprung weight which is very bad for vehicle driving dynamics/refinement. Havin...

Hi Johannes, thanks for reading. I don't believe you are lazy at all🙂 But no that wouldn't do much... So for one tonne to rise 100m; 100m X 1000kg X 9.8m/s² = 980,000J 980,000J / 3600s = 272Whr storage!! Then we'd have to get the electricity in and out of the Leaf. So either through rails or flexib...

I have replacement gear-sets in the works for the leaf gearbox, For this exact purpose! sadly this nismo lsd is not the right kind for a 4x4 application, as it will not transfer torque when there is 100% slip. A ATB would be ideal, I’m taking measurements of the leaf diff to see if it a “standard “...

Any ideas for somewhere to obtain this? MY SDU arrived with the coolant port broken on one of the inverter plates (they are FRP). I have not been able to find a yard that will sell one off an SDU. The online parts catalog just shows the entire SDU unit, and the output shaft seals... Both sides seem...

I have had my 1960 mini taken off the road due to holes drilled in the boot. They could not fault the EV, just the holes. All the ideas and plans discussed on this thread will be of no use if the DVLA just ignores them. I have a parliamentary petition on the subject and my MP has written 3 letters....

I presume the standard 'acoustic' covers including motor cover - and 3x transmission covers are present and correct? image.png image.png As mentioned I would check all the rubber mounts are 'free' and not in hard contact with the body? I would also try filling the void behind the motor with acoustic...

final drive with diff for this motor is part no:4450018EA0 the motor and final drive is the same between kia niro and hyundai kona. and yes, we will not use the full RPM of the motor in this installation, more like half rpm if even that. (its maybe going into and old landrover directly on the drive...

What is your sensor grounding like?
I have had issues with interference in previous ICE DIY ECU projects which was caused by poor grounding.
Maybe you can use the same principles?
From here:
http://www.msextra.com/doc/pdf/MS2V357_Hardware-3.4.pdf

thanks for the extensive explanation. This theory is familiar to me, but I mean whether I can overload such a motor for a few seconds, say up to 250 kW. What are your experiences? I think i'd be checking on the differences between the 100kw & 150kw versions. If they are the same motors - then K...

I informed the DVLA of my (2001) conversion 6 weeks ago. I finally got a response yesterday. It was essentially just asking for information I'd already provided. As expected, they are primarily just checking whether the chassis has been modified, and hence whether an IVA is required. They've also a...

DVLA will only apply changes to v5 ... Well they used to (look at my old car gr03vnx) if the installer was registered with uklpga and you got a letter to send in with stamp on it. Yes they do cut holes! At the moment DVLA are just being a pita ....best joke theory is someone's wife ran away with a ...

Hi All, I’ve been observing for a while, and watched nearly all of Damien’s videos and quite a few of Johannes’ videos. I have the technical background to deal with this from the electrical and mechanical sides but am no expert. All I know about inverters is what I learned here. The following is my...

A pity there was no mention of the gear reduction tech - and why they chose planetary vs parallel gear sets?

Watched this the other night and though some may find it as interesting as I did.

Particularly liked the tiny little differential in the centre of the rotor!

So far, haven't found/heard any info on failure modes. Is the leak during rotation? while sitting? reverse spin direction? This rebuilder claims its the axial play on the bearings (I presume then suggest the shaft axial movement) is causing the leak in the video's comments This doesn't quite make s...

A bit of a rant . . . As I mentioned above, providing a weep hole between the pump seal and bearing was standard practice for lowly water pumps on pretty much everybody's automotive and industrial engines for a century. I don't know why any engineer would have reason to assume that a seal would ope...

The EQC also used induction motors. seems they also have some issues with coolant sealing (only recalled in China though!) https://www.autoevolution.com/news/mercedes-benz-eqc-gets-10104-units-recalled-in-china-for-coolant-leakage-181994.html https://www.laitimes.com/en/article/34nq8_3ld7t.html surp...

BTW, just discovered Audi e-tron has coolant cooled rotor. Many reports of coolant leaking into electronics. Not much details yet (fairly new car so mostly warrantee motor replacements) and dealers describe problem as a failed "gasket". More mechanically inclined are chiming in the rotary...

True but the ICE drivetrain ratio is quickly reduced via transmission shifting as the car gets moving, So not staying at this ratio for long. In any case, curious the source of LDU's gears mud production and weather its any worse than typically gearboxes which has clutch material wear as well (less...