Its been awhile, but I'm now trying to answer the last questions about my Hellcat before attempting to fly it. Hoped you might be able to answer these questions or point me to someone that can help.

My Precision Eagle 4.2 with a 24x10 is running at only 5000 rpm - Have had some experienced people look at it, but no ideas as to why its running this slow - spec indicates it should be running at or above 6000 rpm. Using a Top Flite prop now - may try a Zinger - perhaps there's a significant difference between brands.

Have checked to make sure muffler is not restricted, throttle linkages/plates are all moving to full extent, etc. Adjusting the mixtures either direction lowers the max rpm.

Running a 22x10 Top Flite produces about 7000 rpm, and the static thrust is noticiably higher, though I've not measured it. Maybe the specs are wrong and the engine is over propped with a 24x10?

Also, weight may be an issue - specs called for 24 lbs. My aircraft is at 30 lbs (56 oz/sqfoot wing loading). I've not flown it, but it seems to want to take off at half throtttle, 20% flaps - but its moving a lot faster than I'm used to taking off/landing at.

I think a I can get 4-4.5 lbs out of the aircraft by building new wing/stab/elevator panels using a different construction/finishing techniqued, which would also allow me to pull all my added nose weight out.

Any suggestions appreciated.

Dale