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Home✈️Aircraft🚁Helicoptere-AlignT-REX 550 › Need gear help
04-04-2015 03:52 PM  6 years ago
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jason46

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MI

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Need gear help
Trying to come up with the right part numbers for a 112t main gear setup.

Is H70G002XXW 112t the correct gear for a 550?
Looking at this pinion h60176.
Does part H60198QA 131t work with h60078 tail drive gear?
And I have this gear case H60200.

Thanks!
Jason
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04-06-2015 01:40 AM  6 years ago
jason46

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Think I'm screwed
So looking at the part numbers I don't think I'll be able to use the 112t main gear with a belt drive tail.

According to Ronlund.com the tail drive gear H60198QA is .6mod and I see there is a 180t .6mod gear H60020AA. However this autoratation gear requires the third generation gear case HN6064BA, and the 112t gear is listed with this case, H60200.

Looks like it boils down to, I can't use the 112t main gear with the 180t autorotation gear which I believe is required for the belt drive. Does that sound correct?
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