O.S. 1.60 prop
 

Well I had a rare engine failure yesterday, The CRANKPIN broke of the crankshaft on my Moki 1.35. I put a 1.60 in its place, But I don't know of what prop to use.
Any starting points for Imac flying? The plane is a Sig Cap that weighs 11.5 lbs. Also, expected RPM's would be great.
Thanks,

I like the...
 

Pro Zinger 18x6.....more for 3 D work.

I like the Moki and Mez 18x8 for sequence work....

Pugs

O.S. 1.60 prop
 

I use a pro-zinger 18x8 with a kline regulator (put my tank on the cg). It works great on my Sig extra at 13.2lbs.

O.S. 1.60 prop
 

Same prop for APC? Thier 18" and up looks funny, why

O.S. 1.60 prop
 

I use a 18x10/17x12 APC for Pattern,
with a Krumsheid pipe i get 7800 rpm.

The 18x10 has got some more pull at low speed, the 17x12 is for pattern the best, because it keeps the plane going.

O.S. 1.60 prop
 

18-8 is the largest, or I'd start seeing it overheat. I settled with the Pro Zinger 18-6. There is more RPM's with that prop, but I find myself bouncing back and forth. I have those motors on two of my planes, GP-202 and Edge.
RickP
BTW - I love them ;)

O.S. 1.60 prop
 

I Tried a bunch of props and finally settled on the APC 18X8 for the GP Giles 202

O.S. 1.60 prop
 

I tried a bunch too and think the Mezjlik 18x8 is the best. Pro Zinger 18x8 turned much faster but didn't have as much thrust. Are you running a pump? 5 of us at the field have pumped 160's and are running the mezjlik and all get a consistant 8500 on the ground. Pro Z 18x8- 9000. Reg Z 18x8- 8000. Large APC's have a smaller area and not as much load on the engine. I don't know why, maybe to make their numbers look good. Anyway, they are more for speed instead of thrust.

O.S. 1.60 prop
 

You should try the APC 19x8 W, I have used this with great success on a OS 140RX in a Funtana.

O.S. 1.60 prop
 

The W fun fly props are better. The APCs we used were the letter opener blades, yuk.

O.S. 1.60 prop
 

a.k.a. Ginsu Knife

O.S. 1.60 prop
 

How about the APC 18x6W ? Is it to little prop? It also has the Profile similar to the 17x6 and 17x8 APC (those are the props that I ran on my moki 1.35 before it broke)

Could you guys give some expected RPM's with these props? I am going to break it in on Saturday, There is a fly in on Sunday.

Thanks Again,

O.S. 1.60 prop
 

I got 9100 on 18x6W, but the spool up was interesting