Electric Trike Build

[Ulu]

OK. This one has 1 inch axles and 1 inch wide drive diff gears and they are beefy for a glorified lawnmower.

When this one died, Dad bought the 20hp one which has the same transmission but additional high range/low range gears.

This part of it is the same as the 20 hp model. There’s the differential gears.

That tea tag is 25 mm each way.

Here it is with all the gears flipped over into the opposite case half.

More data later…

 

[Jude Ephesus]

WOW! Epic project! Can’t wait to follow this build!

 

[Ulu]

WOW! Epic project! Can’t wait to follow this build!

It has to exist a bit more first.
These are just the preliminaries, and soon I will have to delay things until my welding is done on the car chassis.

 

[Ulu]

There is the cluster gear assembly, and boy is she a beauty! But I don’t need her, so she goes in the bucket of spare parts.

I don’t need any of these things that I have marked, and they are all going in the bucket of spare parts.

Seen from the other side, but it’s all history.

In order to remove all that stuff, I only had to make one internal modification, which was to move this clip on the new input shaft (the former brake shaft).

There it is installed in the transmission. By moving this clip, I was able to eliminate the second heaviest gear in the whole transmission, plus a heavy steel spacer.

So what you see there is everything that’s going to remain inside. Here it is looking from the other side.

I buttoned and it all up and weighed it. As you see it here it weighs 44 pounds Without the oil. The bucket of spare parts weighed 22 pounds, so that’s how much I’ve lightened it so far.

 

[Ulu]

It just occurred to me that for proper lubrication this transmission is supposed to carry 5 quarts of 30wt oil. With all those gears and shafts removed, it is going to take 6.5 to the right level, which is about 13 pounds of oil.

I feel this is absolutely unnecessary (For the duty I expect) I could cut this case off and make a block off plate, but I sure don’t wanna weld on it.

My quick and dirty solution is just to stuff a couple of empty oil bottles inside the case before I fill it up.

A more elegant solution would be to carve a fitted plug out of Styrofoam and seal it in plastic. I think I should be able to get away with two or 2 1/2 quarts.
I’d be real happy to shed 5 pounds there.

The way this will be suspended, this whole transaxle is unsprung weight. I will do whatever I can to reduce that.

If you want a vehicle to ride and handle well one of the worst things to do is add unsprung weight.

 

[Ulu]

Some of you might wonder how that input (formerly brake) shaft had an unused groove on it in exactly the right spot.

It’s for the version of this trans with another sliding gear, for hi/lo range operation. A big gear slides on that splined shaft.

I Don’t have it or need it.