Clutch / Flywheel Nut Loose

[topher]

I am hoping someone has some advice on my next build issue!

I have a TT50H engine with the standard Titan 50 fan etc. I have assembled it all but the main nut holding the clutch / flywheel assembly just keeps coming loose!

I have tried three times now and each time the engine fires then cuts out and I can see the fan has moved away from the engine casing.

I am tightening this thing as tight as i dare without damaging the threads - I have a piston locking tool and am really putting quite some torque on it with thread lock yet still it keeps coming loose.....

Any words of wisdom - is it worth trying a locking washer under the nut or double nutting it??

Thanks

Chris

[POLAR BEAR]

Make sure theres no oil on the nut or the crank if you are using thread lock and plenty of grunt it should,nt keep un-doing ! give it plenty of stick with the socket wrench you wont harm the threads.
BEAR

[pk-surfing]

When you next add threadlock and tighten it up remember that the threadlock should really be left (I think it is 24 hours ?) quite a few hours to harden up before trying to start the engine.



.

[topher]

Thanks all, I have cleaned it all with brake cleaner, run a tap through the nut and a die over the shaft so that it is all clean and have put it all back together with a bit of extra leaverage, will leave it for a couple of days now to set properly - my starter shaft head is starting to round anyway so i cant start it anyway until shops open again to get a new one!

Thanks for the help

Regards

Chris

[topher]

Sucess, heli starts as it should - now had a tank on the deck with it very rich. Just got to wait for a nice day at the weekend to try a first hover flight! One more question coming up on a new thread and then i should be armed!

[POLAR BEAR]

Cool. Just dont force the engine over if you flood it and you should be ok now BEAR.