My single cylinder engine

[gus]

Good news is the engine wants to start but the bad news is as its trying to start the flywheel become loose.
I thought 4 set screws will hold the flywheel in placed but I guess I was wrong.
So looks like I got a bad design in placed. Any suggestions that you guys can think of to fix this issue?

This is how the flywheel is hold to crankshaft.

Thanks
Borna

Hi Borna,
This fix won't last. There is too much shock load.May I suggesst three options as permanent cure.
1. use a taper shaft sleeve adapter with key way.
2. use woodruff key.
3. parallel key.

 

[Longboy]

I tried set screws and got the same results....just don't hold even with 3 pints of Loctite!. A rollpin thru flywheel hub and crankshaft worked real nice here on my I/C engines, just learning sollutions that work thanks to more veteran modellers.

 

[borna]

I was planning to use a rollpin, but I think would be hard if you need to remove the flywheel from crankshaft. But I could be wrong.
However I used 2 piece clamp on shaft-collars and holding very well after total of 2 hours run time.

Borna

 

[robcas631]

A work of art! I can't wait until it's finished.

 

[robcas631]

Gus,

Perhaps he can make the shaft out of a single piece of steel? It's not that dificult.

Rob

 

[robcas631]

Try making the shafy from one piece of steel.