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HelicopterThunder TigerOther › raptor90 collective servo ?
06-01-2004 05:23 AM  13 years agoPost 21
s80mac (RIP)

rrApprentice

San Diego

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I use a JR 8311 works great.

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06-02-2004 01:18 AM  13 years agoPost 22
inkspot1967

rrProfessor

Cranston Ri

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ok thx all for the help looks like the 9350 is the best choice for me which i want to stay with futaba servos thx again mike

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06-02-2004 04:01 PM  13 years agoPost 23
olivierparis

rrNovice

PARIS FRANCE

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For the collective pitch on my 3 R90 i use


1 HITEC HS 5945 ( nice but with freeplay with the metal gear)

1 JR 8321* ( very nice buth a little smooth )

1 JR 8425* ( the best of the Three !!!)


* Asian number see for US reference !

best regards

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06-02-2004 05:33 PM  13 years agoPost 24
John Tz

rrApprentice

Chicago, IL

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inkspot1967

I use 9252 on collective and cyclic. No problem...these servos are bulletproof. I suspect that you either got a bad one, or there is a linkage problem.

The 9252 have more than enough torque for this application. What kind of blades are you running...any out of track issues? where is the feathering axis on your blades? seems like for some reason you are putting a huge load on the servo or you simply got a bad one. I can't believe that you got two bad ones in a row.

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06-02-2004 09:17 PM  13 years agoPost 25
KC

rrElite Veteran

WA

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I got an extreme and an r90, both with 9252s and V 690s, I really cant tell the 'holding power' difference between the two collectives.

I run a smaller arm than the factory suggestion on the r90 for 3-d, about 15mm, and use all the ATV, the wider sweep the servo takes will make it stronger.

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HelicopterThunder TigerOther › raptor90 collective servo ?
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