really nice evening flying but...

[moyesboy]

Wrung out my 600n, got my 500 beastX v3 setup, then one last flight with my 600n as dusk approached, al going great then as I spooled down the engine went tick and stopped suddenly.

I had this before.

I reckon like last time the piston ring has rotated and come out the exhaust port. I think after a while the little pin in the piston groove that stops the ring rotating wears down, and then the ring rotates and when the gap is next to the exhaust port it causes this problem.
OS50Hyper.

[WOODSTER]

http://www.rcheliaddict.co.uk/engine...tml#post707268




91HZ - Page 1 - RunRyder RC Helicopter



Looks like it could be wear on the con rod and crank that makes the ring spin and push the pin in or out if your very unlucky.


ps : my engine was old .