Leaf spline coupler

[EVwhisperer]

Newbie here.
Any update on coupler price/availability? Or is it just the drawings you're offering?
I ordered a couple clutch discs, but want to try this route as well. I have an EM57 stack and soon a steel mounting plate.
Thanks.

[Bratitude]

Newbie here.
Any update on coupler price/availability? Or is it just the drawings you're offering?
I ordered a couple clutch discs, but want to try this route as well. I have an EM57 stack and soon a steel mounting plate.
Thanks.

take a look at the first post.

made a batch. But I’m sold out now.

looking at changing and simplify the design to make the coupler cheaper.

[vwbrady]

since i used your CAD to get my Leaf splines, you're more than welcome to sell the universal shaft i made.

[mdrobnak]

Stupid question, but the splines on a EM61 are the same as the EM57, or are they different? I realized the wiring might be easier for the EM61 - I'm not sure how one would seal up the area on the EM57 given it's designed to be under the inverter.

I know it says untested, but do we know if it is the same, or does someone have a wiring solution for the EM57?

-Matt

[Bratitude]

Stupid question, but the splines on a EM61 are the same as the EM57, or are they different? I realized the wiring might be easier for the EM61 - I'm not sure how one would seal up the area on the EM57 given it's designed to be under the inverter.

I know it says untested, but do we know if it is the same, or does someone have a wiring solution for the EM57?

-Matt

I’m pretty dam sure they are the same. But yes, like ya said, untested.

em61 wiring is definitely much nicer if space is tight. and (might just be bs internet speculation) that the em61 is the better motor, more over built and capable as it is very close to the rd units. Can’t remember where I heard this discussion.

The matting faces and seal on the em57 are quite simple. 3D printing a cable gland/seal that matches the em61, wouldn’t be hard to design.

I’ve done one for the dc hv lines, one for the phase connections wouldn’t be much different.

[mdrobnak]

Ok, I'll be the guinea pig. Even if I put in the crazy motor that I was going to later, I'm going to start off with the Leaf motor to at least validate the rest of my system design.

-Matt

[vwbrady]

EM57 and 61 splines are exactly the same.

mdrobnak, I'm with you in that sealing the inverter DC input is difficult, but i know i've seen someone on the forum who 3-d printed something for that purpose.

[Bratitude]

EM57 and 61 splines are exactly the same.

have you tested this? how sure are you? this is great news

[vwbrady]

it fits perfect. i might have a video. let me check.

I can't believe i even took this! haha

https://photos.app.goo.gl/KP5fcVHcSRxDvXQx6

[Bratitude]

it fits perfect. i might have a video. let me check.

I can't believe i even took this! haha

https://photos.app.goo.gl/KP5fcVHcSRxDvXQx6

looks like a em57 motor in your video. which yes I spent an enormous amount of time making sure it fit correctly. But would like to know if it fits the em61 motor.

[Traju]

Any update on availability?

[Bratitude]

should have newer, cheaper coupler available in 2 months

[Bratitude]

hey folks, after lots of back and forth with the machine shop, v2 couplers are finally in production!

-4140 alloy steel
-simpler design. No flange, but still compatible with the bearing.
-cheaper!

[Bratitude]

v2 couplers arrived !

EDM machined 4140 goodness

[JaniK]

Looks nice and simple enough.

What kind of price is cheaper?

[vwbrady]

what does the other side look like?

[arturk]

I would be interested in getting one or two. Please let us know the price. Thanks!

[Bratitude]

what does the other side look like?

I’ll post drawings and better photos once I’m back at the shop. About a week from now

I would be interested in getting one or two. Please let us know the price. Thanks!

Looks nice and simple enough.

What kind of price is cheaper?

260$ Canadian!

[vwbrady]

looks like you simplified it the same way i did. though i didn't see any need for a bearing. just a universal opposite side to add a clutch spline piece to.

viewtopic.php?p=23018#p23018

[Bratitude]

looks like you simplified it the same way i did. though i didn't see any need for a bearing. just a universal opposite side to add a clutch spline piece to.

viewtopic.php?p=23018#p23018

PXL_20210403_025616976.NIGHT.jpg

still compatible with the bearing, now just some additional machining if some one wants a flywheel or Drive shaft interfaced compared to gearbox direct drive

[vwbrady]

It's a great price! as now to get mine made again, it's about $500 through 3d hubs.

[JaniK]

Very interesting, price is good too. I will try first to use the Leaf box, but if or doesn't fit good, here is the plan B then.

[raine]

Hi. Do you have these couplers available at hand? I am interested buying one and having it shipped to Finland.

[Bratitude]

Hi. Do you have these couplers available at hand? I am interested buying one and having it shipped to Finland.

Yes, back at the shop in a few days then I can ship them out. PM me

[Bratitude]