Hi Guys,
It feels as if I've hit a brick wall. I had a 48(pitch) X 52 prop on my KR2S (haven't flown yet). The max revs I got was 2,760rpm static. I then bought a 45(pitch) X 54 prop to see if I can get to 3,000rpm, but I only got to 1,850rpm. Stripped the 2 Stromberg 175 cd carburetors and had them rebuilt - no difference. The main problem with these numbers is that I can only get to 65mph IAS and it takes 1,500 feet to get to that speed. The main reason for wanting 3,000rpm is that the vw max torque is at 3,000rpm and I think I will then jump to heigher rpm and thus more thrust and then higher speeds...... What am I missing? The KR2S has got wing tanks and tri-cycle gear and is 4" wider in the cabin, weight is 876lbs empty, so she is a bit heavier that she should be. (I am 176lbs and 5ft 8in) My altitude is 5,500feet ASL and the temps we had is between 89 degrees and 108 degrees Fahrenheit. (32 degrees - 42 degrees centigrade) Hope somebody can help! Cheers, Pierre
