All, Sparky


Could everyone have overlooked the ring end gap??

In ringed engines there is a size spec for this gap, so when the engine runs at its intended working temperature, it must be as closed as possible, but not closed!

Could it be too small and the ring ends be butting together, as the engine reaches operating temperature?
With this engine's steel sleeve, you may not be able to notice any unusual wear, but the engine will invariably overheat and die on you, for no apparent reason...

But no! It is not steel, but ABN. The base metal for the sleeve is brass and it is plated all around with nickel (see [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXCL08&P=Z]part specs[/link]).

It would not survive even for a minute, if butting occurred.
So we must think of something else...

You want your ringed engine with a steel liner? Get the 1.08FSR.