edge540l

currently have a g75 on it and want to get a bit more for it,what do you guys recomend?looking at either a os 120ax or a saito fa100.figured i would ask and see what will be a better choice and what prop for them for 3d

KWJ48

I noticed in the other thread you said you're running a 12X6 prop on that engine. I run a 13X6 vess prop on a os55ax with good pull out. I suggest you try another prop say a 14X4 or 6. But if you're really wanting to change, go with the saito 100. IMO

Kenny

Berwyn Bill

My Feedback: (16)

I've flown a couple of the 55sp slabs with the 1.20ax on them and they flew great. It's a good combo. I've run the 1.20ax on a few planes now and it's always been a very reliable powerplant. Break it in on a 16x4 or 16x6 prop and then go to a 17x6 like the APC or XOAR once you've got it dialed in. I run both 17x6 props on my 1.20axs on 15% fuel and it's a hell of a 3D engine. On the 55sp it will give you unlimited vertical and enough power to punch out of anything.

If you'd rather have a 4 stroke, go with the Saito 125.

AFSalmon

My Feedback: (3)

Ditto on the 1.20AX. Has been a fantastic combo and very reliable. Plus you only need to run 10% fuel versus the higher nitro required for the 4-S engines. Don;t get me wrong, I have a YS 1.10 and Saito 100 I run also but they require more expensive fuel and cost more initially as well. Now that the 1.20AX is out it makes a perfect choice.

alpapilot

My Feedback: (1)

Saito 100 really is not enough. I would go with the Saito 125.

j.duncker

My Feedback: (2)

Got a 120 AX in mine and I am sooooooo happy with it.

edge540l

anyone have a used 1.20 they wanna sell.if so email me at [email protected]

edge540l

picked up a saito fa100 fairly cheap,it has 4 tanks in it .now i have it mounted and the throtel arm is on top and i need it on the bottom,can i rotate the carb like on a os 4 stroke or is it not adviseable??

wessco

My Feedback: (7)

You can certainly rotate the carb. Watch the o-rings and be sure not to tear or pinch them and then it'll not run correctly.

edge540l

well have the saito 100 mounted and ran a tank through it,seems to pull better than the g75 with a 14x4 prop,weather did not go in my favor to test it so looks like it will go up tomarrow.yesterday i had to do a fuse rebuild and fix a wing due to the g75 quitting when i got around 4 feet off the ground,and it went into a stall due to the windy conditions and wammo hit the ground,taking out the fuse where the landing gear goes and the motor mount and the right wing got the outer sleeve for the fube ripped out.got it back together and it still looks good

alpapilot

My Feedback: (1)

Use a 15x6 on that Saito 100. A 14x4 is WAY too small.

EDIT: wait a minute, did you mean that the 14x4 was on the 75? If so, disregard.

edge540l

yes the 14x4 was on the 75.calls for a 13x6,as long as you reduce pitch by 2 you can run 1 inch larger prop so a 14x4 will work well on the 75