Kavan Sopwith Pup
Scott,
I've got a part built Kavan Sopwith Pup and even before I fly it the first time I'm already making changes to it to discard the supplied geared 280 and put in a GWS EPS300. Everything I've read about this plane on the internet suggests that Kavan were "having a laugh" when they put that 280 in there - it'll barely fly it. OTOH I've heard of several people who've successfully upgraded to an EPS300 and think it is a GREAT plane. The only tricky bit is working out how to mount it (it involves cutting off the front "fake radial" plate and bolting the gearbox to that. I think I'm using the B ratio and will probably use an APC 9x6 on it. (I may well also use some LiPo batteries, not for the added duration but to lighten it further and up the performance a bit more)
Cliff