Golf Kart Vertical Engine Gearbox

neko_07

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First time on this site, so I apologise if this is a misplaced thread or anything.

I have a 1997 Hyundai golf cart that I'm converting from electric power to gas, and I'll be using a way overkill (I live in a small town and this was all I could find) 16hp lawnmower engine with a vertical shaft that I need to convert the rotation from to a horizontal input. I already have a transmission installed and ready to go, and the engine is basically complete. I just need a 90° gearbox that will take a maximum RPM of 3,600 or more that has a female 1 inch bore so it will slide onto my transmission input shaft. The plan is to use the pulley that was originally for the blades to drive the transmission through that gearbox and via a belt, so that it will slip instead of destroying the drivetrain.

The problem is that I literally cannot find any gearbox online that can take over 3,600 RPM and is small enough to fit into the tight spaces. Any help would be appreciated.

I posted a picture in the attachments. The green shaft on the left is the transmission input that the gearbox needs to fit onto. As you can see, there's not much room for it. And yes, I promise it's temporary. I'm just trying to mock it up so I know what parts I will need in the long run. You can see the black engine pulley on the right that the gearbox needs to go down to. I plan on attaching a shaft to the input of the gearbox and putting a pulley on the end to connect the gearbox and engine via a belt. (Again, temporarily, for mock-up.) View attachment 20210118_124820.jpg
 
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karl

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Yeah a right angle gearbox with adequate specs aint cheap.

Perhaps a mule drive belt setup can drive a jackshaft, then mount a clutch on output of the jackshaft. Or find a v belt pulley clutch.


 
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neko_07

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Yeah a right angle gearbox with adequate specs aint cheap.

Perhaps a mule drive belt setup can drive a jackshaft, then mount a clutch on output of the jackshaft. Or find a v belt pulley clutch.


That's one thing I definitely thought of doing. The problem is that there isn't enough space.
 

ezcome-ezgo

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Yes it is! All it's missing is the female bored shaft. Also, the shafts aren't 1". I looked all over the place and could never find one.
Huh. Well I figured you were beyond the point of expecting to find one part that offered the complete solution. The only shortcoming I saw with this RA gearbox was the HP rating. Smaller shafts and connections can be adapted with some ingenuity.
 
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