At 876 lbs empty I'd be looking for a bigger engine than a VW - especially at that altitude and with those temps. Also, I'm pretty sure 3,000 rpm is a bit low - most of the VW guys seem to go for around 3,400 - 3,600.
TK Sent from my iPad > On 23 Dec 2015, at 6:36 PM, PIERRE via KRnet <krnet at list.krnet.org> wrote: > > 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 > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
