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T-REX 450 › Possible problem with KBDD Paddles
12-31-2009 07:58 AM  7 years agoPost 1
NQNA

rrElite Veteran

USA

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This is the second set of KBDD paddles for the 450 Trex that I might be having a problem with. The paddle seems to be splitting the plastic as the flybar is threaded on. I tried to take a picture but it's difficult to get a clear photo. All of the paddles have been threaded on a stock Align flybar.. one on a V2 and the photo is of my new Pro. It's hard to see but there is a slight bulge in the plastic at the edge of the paddle and it appears to be developing a crack. The paddle has been threaded slightly on past the threaded area.

Has anybody had a similar issue?

The part number is Item #4211

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12-31-2009 08:17 AM  7 years agoPost 2
duke666

rrKey Veteran

Hampshire, UK

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I assume you have checked they are deffinitely 450 paddles in the box and the paddles you have are for that diameter flybar?

If it were me and I know you shouldn't have to, I would run a tap down them first.

Duke

OOOPPS............

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12-31-2009 07:50 PM  7 years agoPost 3
NQNA

rrElite Veteran

USA

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The KBDD folks graciously contacted me to silence my fears with the paddle sets. The paddles are designed to slightly bulge as the non-threaded area of the flybar enters into the paddle.
They assured me that all is well...

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01-01-2010 02:01 AM  7 years agoPost 4
KBDD

rrNovice

Reynoldsburg, OH USA

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"If it were me and I know you shouldn't have to, I would run a tap down them first.

Duke"

Duke,

Thanks for the suggestion but the paddles are designed to buldge as the non threaded part of the flybar goes in. You really do not want to tap the paddles as having the flybars cut the threads and having the non-threaded portion of the flybar all adds to the holding power of the paddles. We have not heard of anyone who has made these paddles move in flight when properly installed. Again, tapping the paddles would absolutly decrease the holding power of the paddles and you would more than likely have to use CA to help them hold. It seems like a great idea but you do not want to tap KBDD paddles. We used to tap our 50 and 90 size paddles but found a change in material composition and having the flybar creat the threads makes for a paddle with much greater holding power.

Thanks for your comment!
Dick
KBDD

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01-01-2010 07:05 AM  7 years agoPost 5
duke666

rrKey Veteran

Hampshire, UK

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Oh well, lucky for me V - bar does not seem to have this problem

Duke

OOOPPS............

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01-02-2010 03:38 AM  7 years agoPost 6
KCinNC

rrApprentice

Mooresville, NC

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i have KBDD stuff on all my heli's.....no problems or movement whatsoever !!!

nothing to it but to do it

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