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View Full Version : A65/C90 Prop ?



jon
03-24-2005, 07:20 PM
I need a prop for my C90 Wagaero J-3, in the hanger I had a McCauley
CM 74-43 that used to be on my A65 Champ. Installed the prop on
the cub, static rpm is 2250 I have better climb than before but cruise
did suffer. Is their a better prop I should be running or can I use the
74-43. I would like climb performance over cruise.

Thanks Jon

bob turner
03-24-2005, 09:45 PM
W74 GK 49 or 50 is the one for the C-85. I'd guess that's why you don't get good cruise.

planenut
03-25-2005, 06:59 AM
All the C90 powered Cubs that i have flown or built used a CM7144 thru CM7147. Sensenich has a different size, i believe its like a 76AK-2-42

JimC
05-18-2005, 09:09 PM
I've been running a CM 74-43 on a C-85 J-3. Static was about 2150, cruise about 84-85 mph at 2250 rpm, and top speed about 101 mph (on a good day).

I recently repitched to 74-41 and am getting better takeoff and climb, and am cruising at about 81 mph at 2300 rpm. Static is now about 2250-2300 rpm.

JimC