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Home✈️Aircraft🚁HelicopterVario Sky Fox - Benzin - Evolution - Xtreme › benzine trainer rotor head question
04-12-2014 07:59 AM  5 years ago
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geomecc

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Long Island ,NY

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benzine trainer rotor head question
how many shims are supposed to be between the spindle dampener o ring and blade grip? I have the 2 shims according to the manual and there is a lot of movement of the spindle in the main hub. if I look between the grip and the hub I can see the o ring (hanging out of wher it's supposed to be)
I need the head to be stiffer
R I P Roman Jr. Team SKOOKUM SRW EFC
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04-12-2014 12:47 PM  5 years ago
Notar

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Two shims per side is factory. You can add more to stiffen the head. I did this all the time, since i was used to the MA head.
Joe
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04-12-2014 03:43 PM  5 years ago
geomecc

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Ok. I just thought I was missing something because it's way loose compared to most helis. it almost seems like the oring dampener isn't doing anything as most of it isn't in the holder. do those plastic dampener holder( not sure what it's called) wear out? it is an older model of the benzine trainer.( maybe @bladebuster could chime in on its age as he built it)R I P Roman Jr. Team SKOOKUM SRW EFC
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04-12-2014 04:57 PM  5 years ago
Notar

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Its possible the sockets are worn slightly. We do carry replacements. If the orings are old, you may want to think about changing those as well.
74/10 is the hard o rings, and 74/5 are the softer ones.
You may want to go to the hard orings if you like a stiffer head.
Joe
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04-25-2014 01:07 AM  5 years ago
geomecc

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i used some shims from my bergen parts bin to take up the extra space and now its a bit too stiff but much better than beforeR I P Roman Jr. Team SKOOKUM SRW EFC
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Home✈️Aircraft🚁HelicopterVario Sky Fox - Benzin - Evolution - Xtreme › benzine trainer rotor head question
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