I have an OS 46 LA in my ARTF Nobler and it is perfect. It runs an APC 11x5 prop set up rich and on 60 foot lines the lap times are 6 to 7 secs. Have had 100 plus flights and nothing is altered from the ARTF as it came. Flew it it beginners stunt at the Nats this year and had many come over and check out what engine set up I was running. Also let one of the Gold Trophy boys have a go and he was very impressed by the performance - only my ability letting me down now!

Cheers

Kevin