RE: 1/2A THRUST-O-METER
HI GANG! GUESS WHAT TIME IT IS?........ IT"S THRUST-O-METER TIME! Todays' competitor in the power lifting event is the NORVEL AME .061! This is the one that was in my 1/2A contest plane. I adjusted it for best compression with 30% fuel, ran it on bladder and here's what it did...
PROP RPM THRUST OZS
COX 5-3 21200 17.6
MAS 6-3 17900 20.0
MAS 5.5-4 22700 18.2
MAS 6-4 17600 19.2
ZINGALI 6-3 17900 14.8 OINK!
PUSHER 6-3 19600 reverse thrust
APC 5.7-3 21200 19.2
APC 5.5-2 24000 18.2
GRISH 5-3 24000 16.0
GRISH 5.5-4 17600 17.0
GRISH 4.5-4 21800 17.0
OPEN EXHAUST
MAS 6-3 18800 23.0
MAS 6-4 18500 22.4
APC 5.7-3 22600 22.4
APC 5.5-2 25600 22.2
GRISH 4.5-4 22500 17.6
I loaned my COX 6-4 out, that's why the results are missing, MAS 6-4 is a pretty close copy. The increase in power with open exhaust is relatively huge! A little bit of work to the stock muffler would pay dividends.