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jett muffler-120ax

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Old 05-18-2009, 08:57 PM
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russm
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Default jett muffler-120ax

i have the 90lx muffler laying around and was wondering how it would ettect the os 120ax on a gp tony?
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Old 05-19-2009, 01:00 PM
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Default RE: jett muffler-120ax

mmmm...... should attach bolt-wise ok. I think the bolt holes are the same as the OS91. With the OS120 you have to run at least once spacer because of the way the exhaust port aligns.

You will still need the Toni extension kit, or something similar.
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Old 05-19-2009, 05:52 PM
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Default RE: jett muffler-120ax

it will work w/ the tony ext setup. was wondering about the rpm gain
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Old 05-21-2009, 08:46 PM
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Default RE: jett muffler-120ax

gained 1000 rpm w/ the jett muffler ( gold ) vs the stock muffler. 15% synth fuel, 14-8 apc prop, 10450 to 11450
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Old 05-21-2009, 11:28 PM
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Default RE: jett muffler-120ax



The 1.20AX bolt holes are spaced at 48mm compared to 42mm for the ..61 through to .91 sizes.

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Old 05-22-2009, 12:10 PM
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Default RE: jett muffler-120ax


ORIGINAL: russm

gained 1000 rpm w/ the jett muffler ( gold ) vs the stock muffler. 15% synth fuel, 14-8 apc prop, 10450 to 11450

Nice......

Probably will unload another 300-400 in flight. Getsit right to the 12,000 rpm mark where the mufflerreallybegins to help out.

With that big of a prop, that 1000 rpm represents a bigggggg HPincrease.
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Old 05-22-2009, 09:13 PM
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Default RE: jett muffler-120ax

it felt like it in the air.the fit was good and the jett muffler is lighter as well.it also hugs the fuse a little tighter than the stock muffler. it all adds up to better performance nice setup.
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Old 05-23-2009, 10:18 PM
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Default RE: jett muffler-120ax


ORIGINAL: CustomPC



The 1.20AX bolt holes are spaced at 48mm compared to 42mm for the ..61 through to .91 sizes.

Yeah, Ithink you are right.... but the 48mm matches up with the ST and Jett spacing
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Old 05-23-2009, 10:19 PM
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Default RE: jett muffler-120ax

Glad to hear the combination flys well....

ya might want to try something like a 13x10 if you can dig one up
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