Coupler Guidance

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maiks
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Coupler Guidance

Post by maiks »

Hello,

I've designed a coupler that directly connects the Nissan Leaf EM57 motor to my gearbox. However, I'm facing a challenge: the coupler pushes too far into the gearbox, which ends up damaging (or "eating into") the aluminum section and causes the motor side to decouple.

I've attached images showing the affected areas.

After doing some research online, I found mixed opinions — some people recommend adding a stopper at the gearbox, while others don’t seem to use one at all, which has left me a bit confused.

I've ordered an upgraded coupler from BratIndustries (https://bratindustries.net/product/niss ... r-coupler/) and expect it to arrive soon.
Attachments
gearbox3.png
gearbox2.png
gearbox.png
zippy500
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Re: Coupler Guidance

Post by zippy500 »

I followed what Damien did in one off his videos, just simply put some tack welds on the splines as a stop, although I'm yet to test it out
maiks
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Re: Coupler Guidance

Post by maiks »

zippy500 wrote: Fri Jul 04, 2025 12:46 pm I followed what Damien did in one off his videos, just simply put some tack welds on the splines as a stop, although I'm yet to test it out
A friend tried it, but it makes noise whenever the coupler comes into contact with the welds, especially when driving at low speeds (around 30 km/h)
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Bratitude
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Re: Coupler Guidance

Post by Bratitude »

Loctite 660
https://bratindustries.net/ leaf motor couplers, adapter plates, custom drive train components
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