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O.S. 55AX opinions

Old 02-25-2010, 02:20 PM
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TruBlu02
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Default RE: O.S. 55AX opinions

Im jumpin on the OS bandwagon as well. I hve two of the 55AX motors and love them. I did notice the midrange issue but it quickly went away after it broke in. Right now I have one in a EF Chinn Yak and it throws it all over the place. It is about to come out though because I am switching it to a Saito .82. I am putting the 55AX in my TH trainer. It is scary fast with the 55 in it. I use the tower Muffler as well and it is one mean sounding trainer.
Old 02-25-2010, 02:21 PM
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draftman1
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Default RE: O.S. 55AX opinions

awesome engines!
Old 02-25-2010, 02:27 PM
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ChuckW
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Default RE: O.S. 55AX opinions

RPM numbers are fun to look at when you are bored but ultimately they don't mean squat. It all boils down to how the engine runs and the airplane flys. I generally buy an assortment of suitable props for an engine, fly them all and stick with the one I think is the coolest. Not scientific but it works.
Old 02-25-2010, 02:30 PM
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ChuckW
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Default RE: O.S. 55AX opinions


ORIGINAL: TruBlu02
It is about to come out though because I am switching it to a Saito .82.
If you haven't bought that .82 yet, take a look at the OS .81 4-stroke. It costs a little more but so far mine seems to be swinging the same props much better than my Saito .82. Runs better out of the box and nicer to dial in as well.
Old 02-26-2010, 09:31 AM
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Default RE: O.S. 55AX opinions

I just got a new 55AX on my hanger 9 twist. Can I break it in on colder days or should I wait till it warms up above the 32 mark.
Have the itch to run it. Just thought I would ask.

Old 02-26-2010, 11:06 AM
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ChuckW
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Default RE: O.S. 55AX opinions

I say run it.
Old 09-03-2023, 04:02 PM
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Do you think the .55AX can pull a 7 pound Phoenix .55 size F4U Corsair around pretty well? .55 is supposed to be the top end of the Engine Range, but the darn design (too much Plywood) is requiring the builder to add a lot of Nose Weight up front in order for it to balance. I'm hoping that if I move my RX Battery Pack behind the Firewall and scoot the Servos as far forward as I can get them then maybe I won't need to add that much weight in order for it to balance correctly.

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