Dar,

I wrote to you some weeks ago regarding oils loss from the front bearing and you suggested getting back to Just Engines. Well, JE reacted promptly and offered a deal on a new MVVS 91, which I accepted. The new engine has now had a gallon of 20% castor through it, most of that time in the air, and has performed faultlessly - a noticeable improvement on the last engine that was prone to cutting out.

Just out of interest, what rpm should I be expecting on a 14x6 APC. I am using 5% nitro and a throttle pipe (see piccies)? I'm still keeping the engine somewhat rich as it's new and the tacho is showing 9300.

Thanks for your advice and thanks to the guys at Just Engines for their excellent service.