RCU Forums - RCV Engines

Just bought an RCV 91 CD.
I ran it on the test stand for about an hour after breakin and was pleased with the smoothness and general operation.
Installed it in a Sig 4*60 in place of an FS91 and took it out today for some flights.
This engine is very impressive ! Smooth, powerful, and responsive.
200 rpm short of peak gave me 9200 on a MAS 14X6 and the idle is rock solid at 2000 ~ 2100.
I let it idle for 5 minutes with no loading or RPM change and it responded smoothly and quickly to a full throttle blast.
Has considerably less vibration than my FS91, is about 20% better on fuel economy, and is around 50 bucks cheaper.

The only minor downside I can find with this engine is the weight, (25oz) although, it balanced the 4* perfectly.
Since I am a techno buff, it has a huge grin factor and it's own unique sound.
I am not a 3Der, so I can't attest to any performance other than a few loops and rolls which the engine handled perfectly.
It will pull enough vertical to do a short tail slide.

If the longevity of the engine is up to par, this may well turn out to be my favorite !

I am running it on the same fuel as my other 4 stroke engines which is 15% Cool Power with 2oz added castor.
This is a little less castor than RCV recommends, but I am not going to carry two jugs of fuel to the field.
Time will tell !!!