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OS 91 Exhaust adapters

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OS 91 Exhaust adapters

Old 03-13-2010, 09:18 AM
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LargeScale88
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Default OS 91 Exhaust adapters



HEllo, Ineed some exhaust adapters for my os 91 with pump. Such as elbows, 90 degree parts. Im looking for the part that attaches to the engine, and then the muffler attach to it. I can't find crap on tower hobbies. Anyone have any good websites?

Thanks

Old 03-13-2010, 10:53 AM
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Gray Beard
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Default RE: OS 91 Exhaust adapters

Are you asking about the header pipe??? Are you looking for some flex pipe?
Old 03-13-2010, 01:38 PM
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Default RE: OS 91 Exhaust adapters

Im looking for 90 degree arms, that hook to the engine, then hook to the muffler, I"m using the stock muffler.
Old 03-13-2010, 02:01 PM
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Trax540
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Default RE: OS 91 Exhaust adapters

Horizon Hobby should have the adapters you are looking for.

Old 03-13-2010, 02:13 PM
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Edwin
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Default RE: OS 91 Exhaust adapters

At Tower, look under engine components, headers and adapter pipes, and manifolds.
http://www3.towerhobbies.com/cgi-bin...P?&C=GMC&V=OSM

I got 90deg and flex pipes from tower for my OS.91 4-stoke.
Edwin
Old 03-13-2010, 02:31 PM
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JimO
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Default RE: OS 91 Exhaust adapters

90 Deg adaptors are available from RC Specialties, they advertise here on RCU in the engine buy and sell. I have used on Saito, Magnum and Thunder Tiger with great success. OS also has different header pipes and while Horizon sells OS finding the part numbers is a chore. I found all the info for OS here, www.os-engines.co.jp/english/index.htm then ordered from Horizon.


JimO
Old 03-13-2010, 04:12 PM
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ChuckW
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Default RE: OS 91 Exhaust adapters

OS has 90 and 60 degree adapters for the new alpha series of 4-strokes. One of them might work if the diameter and thread pitch are the same.
Old 03-13-2010, 04:55 PM
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Default RE: OS 91 Exhaust adapters

The one I think you are looking for is called the 4-Stroke Twister sold through Performance Specialties ar www.pspec.com these are really a great addapter except for the price. They advertise in Model Aviation/AMA. You can get your muffler to go in every direction and it will help keep the muffler inside the cowl on a lot of planes.

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