New camshaft to O.S .28 for pull start

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Hi guys and greetings from Finland!

I just bought O.S .28 engine for my Kyosho Mad Force Monster. Just have to get done some modifications before installing it.

Problem what I have is crankshaft. There is no pin for the pull start drive. There is only hole in that place and it’s not deep enough to install aftermarket pin. So I need to find new one..

Can you say which cranksaft fits this engine?

Attached images of new and old (GX21) engine.
 

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If the first picture is for the .28, then it look correct.
 
You need to find the O.S. crankshaft for that engine that is made for pullstart, and I'm not entirely sure it exists. Those O.S .28's are Truggy/Buggy engines that are made for bumpstarts, and after quick search, I didn't see anything.
 
Maybe you can try Kyosho 28 or OS vg30 crank shaft. At least you should check the bearing sizes.
 
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