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01-29-2007 03:17 AM  10 years agoPost 1
airtactor502

rrNovice

monroe la u.s

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ive been flying my 90 about a month or three gal and the bolt hole on the shaft. it was causeing vibration real bad.just wondering if anybody is got the same problem

david

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01-29-2007 04:31 AM  10 years agoPost 2
chuck nowell

rrVeteran

beaumont texas

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shaft

ive been fling my 90 for over a year and ive had no trouble with the main shafts.

chuck

E-Kavan
trex800
trex700
ma razor600
team visa

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01-29-2007 05:11 PM  10 years agoPost 3
FLYINFOOL

rrKey Veteran

Cudahy, WI

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I have been flying the 90 for a year and a half and have not had a mainshaft issue. I have not heard of any one else having a mainshaft issue either.

Your post was a little unclear as to what it is about the mainshaft that you feel is causing vibrations. If you can elaborate we'll be glad to help you.


Jeff Borowski
RAMS Club President
www.ramsrcclub.com

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01-30-2007 02:26 AM  10 years agoPost 4
airtactor502

rrNovice

monroe la u.s

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The main shaft holes are egg-shaped causing slack between the bolt and the hole. This is causing slack between the head and the tail rotor. You can wiggle the bolt in the shaft hole. It was good and tight when I purchased it about a month ago.

david

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02-09-2007 05:23 AM  10 years agoPost 5
3dfreya

rrNovice

Greenville,S.C.

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Give me a friggin break,theres no way a little slack in the bolt hole is causing vibrations,get a grip dude

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02-09-2007 08:45 AM  10 years agoPost 6
Portblock

rrVeteran

Van Nuys, CA

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Hmm, there is 2 jesus bolts on the main shaft, one at the botton of the main gears, that one wont cause a wobble/vibration. The other is atop in the main rotor step, that one is just securing a bored piece of aluminum, and it wont cause a vibration.

Dont get me wrong, these can cause micro-vibrations, but thier frequency is too high, and there force it too little to notice, however, if even a smaller sized bolt was to be used, it would not cause noticable vibration.

The voices in my head can beat up the voices in your head.

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02-09-2007 04:17 PM  10 years agoPost 7
FLYINFOOL

rrKey Veteran

Cudahy, WI

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While the bolt and distorted hole will not cause a vibration, It is feasible that a vibration caused the wear in the hole.
The hard part sometimes is finding the source of the vibration.


Jeff Borowski
RAMS Club President
www.ramsrcclub.com

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