Os .15 cv-a
02-28-2016, 12:11 PM
#51
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Today much better.
APC 7-5
Temp 40-41F
15% - 20,580 rpm
25% - 20,890 rpm
Both fuels are syn/cas 18% + about 5% castor for total oil 23%. With a bit more run time and 20% total oil I'd guess maybe 21k static at best.
02-29-2016, 01:13 PM
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Depending on airframe can likely go 6.5x5, 6x5.5 or the like and see some good airspeed.
It's too nice looking and interesting an engine to bolt to some POS. Matney's QM15 models look nice. I had one of the AJ-2 kits:
But SmokinRV-4 talked me out of it. Well in truth, I traded him the airframe for some aluminum prop mold mandrels. He likely hasn't built it yet though (ears burning yet JM...?
).
These guys are all 350 sq in wing though, really they need a Jett .35.
It's too nice looking and interesting an engine to bolt to some POS. Matney's QM15 models look nice. I had one of the AJ-2 kits:
But SmokinRV-4 talked me out of it. Well in truth, I traded him the airframe for some aluminum prop mold mandrels. He likely hasn't built it yet though (ears burning yet JM...?
).These guys are all 350 sq in wing though, really they need a Jett .35.
03-06-2016, 06:49 PM
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More data points:
Omega 15% straight up
MA 8-4 16,600 rpm
APC 8-4 17,250 rpm
and the other day:
25% half-A brew (same as 7-5 tests)
Graupner Speed Prop 6x5.5 22,500 rpm
Omega 15% straight up
MA 8-4 16,600 rpm
APC 8-4 17,250 rpm
and the other day:
25% half-A brew (same as 7-5 tests)
Graupner Speed Prop 6x5.5 22,500 rpm
