I was just curious what prop size anyone thinks is good for a SAITO 1.25 on a Hangar 9 Hellcat and a SAITO 1.80 in a Hangar 9 1.5 sized mustang. I have the Hellcat running a MAS 2 bladed 15x8 and it seems like the plane will not stay still at idle, even on grass. I have flown the 1.25 successfully in the Hangar 9 Corsair with the same result and the idle is not too high and it is smooth. Just curious what you guys think. Oh yeah, for the 1.80 I was thinking a MAS or APC 18x6, maybe the lesser pitch will keep the plane on the ground. Thanks.

Tom

A 16x6 would put a similar load on the engine, so it might work.

I have a MAS 15x6 on my Saito 1.00 in my H9 Spitfire and she'll hold still on the ground and fly like a bat outa $%^ when prompted. I just got a Saito 1.25 for a WM Super Sports Sr. (a 9.5 lb sport plane) and will be using a APC 16x6. I wish I had results of that for you but I have read that is a good match for the 1.25... Sorry I do not have anything as big as your 1.80.

Thanks for the info guys. I think that the 8 pitch is just too much. I am going to try a 15x6 on the Hellcat and I think I am going to go with the 18x6 on the 1.80. I cant fly becuase her in Chicago we have single digit temps right now.


Tom

tommy, the 15x6 is not enough prop for the 125, i use a 16.5x5 on my 125, and like above , the 16x6 will probably be the one you would want on a hellcat i would like the 8 pitch for the speed on it and would tighten up the wheels a little each session.

I use a 16x10 on my 150 size H9 Mustang with Saito 180. I read in a thread here on RCU that a lot of guys said the 18x6 would barely fly the P51. Most were either using a 17x8 or a 16x10 APC prop, I went with the 16x10 because I had one and it flies great. Lots of power and speed plus slows down good for landing.
fossil

I use the APC 16X8 prop on my Saito 180. It seams to really like it. It hovers my Sig Cap 231EX at half throttle and pulls it along with great athority.