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Home✈️Aircraft🚁HelicopterThunder TigerOther › OS 91 sx-h c-spec(blue head) PS any good?
07-17-2006 04:33 PM  14 years ago
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RcFreek

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Mombasa,Kenya

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OS 91 sx-h c-spec(blue head) PS any good?
I've heard alot of people badmouthing this engine. why? are there any tuning issues or performance problems? is 10% nitro good to run on it with castor fuel?
My LHS owns me!!!
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07-17-2006 09:13 PM  14 years ago
raptor90sepilot

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why do you need to know

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dude just put 20 thousandths shimming in and run 30% nitro and u r good 2 goit's not if you crash it's when you crash
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07-17-2006 09:54 PM  14 years ago
workerant

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MN - USA

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I'm happy to badmouth the engine as well. The new version, is awsome. The old version can be improved with the shims and the optional return needle, but still isn't as good as the newer OS 91. You can also spend another $300 and get the cline carb upgrade.

Why oh why didn't I just by a YS?
Raptor 90, Raptor 50
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07-17-2006 10:20 PM  14 years ago
MooneyDriver

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Kent, Ohio

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Makes as much or more power as the SZ with a 60K spraybar; do a search...Hey man, why does my lipo get bigger every time I charge it?
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Home✈️Aircraft🚁HelicopterThunder TigerOther › OS 91 sx-h c-spec(blue head) PS any good?
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