Strange DC Motor Drive (shaft), advise required
 

Firstly sorry if this is in either the wrong place or a repeat post as i am new to this forum and cannot see where the first attempt went.
Stripped out a 80Volt 15Kw motor / pump that used to power the hydraulics on the electric 3 Ton forklift at work and when i removed the pump have found the end of the shaft to be peg like and having watched many videos on You Tube over xmas have not seen this type befroe. I would like your advise if any one else has seen how to tackle mating this to the input shaft of a mainaul gearbox. Not got a car yet and would prefer a locost approach, but oif maching is required then so be it.
Hopefully these pictures will come out.

I would just mill a small piece to bolt to that key, and then you could design the other half to whatever you're going to mate it to on the other end.

You may also be able to have that shaft pressed out and a replacement installed.

I would say you'd be lucky to drive a car for very long with that in the interface between the motor & transmission.

I've still got a smaller version of that style of shaft end on the permanent magnet power steering motor from the forklift we scavenged. The other end of the motor has a fan on it, and if you remove the fan, we've got approx 1 inch of "normal" shaft to work with. Do you have that option at the other end?

I have a motor that looks just like that in my garage!

That is a common connector on a hydraulic pump. Not the type of connection you would want for an electric car though.

Like MetroMPG said, perhaps you could connect to the other end of the shaft? Otherwise, talk to a machinist and see what it would take to get some other style of connection custom made for the motor.

Connecting the motor to the transmission is the most complicated part of a cheap forklift motor electric car. (Unless you are making your own controller!)

Tackle figuring this out first. Everything else is still plenty of work, but nothing terribly complicated or difficult.

On my car, I ended up finding a different motor which had a drive shaft on it, but if I hadn't, I would be doing the exact same as you right now - trying to figure out how to make that connection work.