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T-REX 500 › New Trex 500 ESP
03-21-2009 07:00 PM  8 years agoPost 1
misfits0311

rrKey Veteran

Santa Clarita, CA -​USA

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I just got my trex 500 kit and couldn't be happier. While I was assembling the head, I noticed the radius arm (plastic) that connects to the washout control arm (metal) felt a bit notchy. This is my first real build so I wanted to do it right. I thought there may have been some threadlocker or CA in the bearing, so I disassembled the parts. I scrubbed the adhesive off the threads of the bolts and cleaned everything up thoroughly with alcohol. When I put it back together, it still felt notchy. Upon further inspection I noticed that when you tighten the two bolts they pull side of the plastic radius arm in to the washout control arm. It is almost as though the radius was built slightly too big. When they are together, they are still fairly smooth. I don't believe that it would cause any problems, but I wanted everyone's opinion. Maybe someone knows something about this specific piece. Thanks in advance.

I took a photo so you can see was I am talking about. You can see in the photo that the right side seems pulled in toward the center. Maybe it is supposed to be this way. But I imagined the pieces in the head to be completely smooth and not notchy.

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03-21-2009 07:08 PM  8 years agoPost 2
Foster

rrApprentice

Saline MI

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Looks to me like you are overtightening it to be honest

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03-21-2009 07:13 PM  8 years agoPost 3
misfits0311

rrKey Veteran

Santa Clarita, CA -​USA

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Its a metal to metal fit, because the bolt goes through the bearing and into the metal washout control arm. I rely on the threadlocker and just tighten it until snug. I tried it looser and the notchiness only went away when it was hand tight. That can't be tight enough. not for a rotating part of the head.

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03-21-2009 08:23 PM  8 years agoPost 4
Foster

rrApprentice

Saline MI

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I'd put green on it, hand tighten and check it tomorrow to make sure its snug.

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03-22-2009 03:24 AM  8 years agoPost 5
abc123

rrNovice

va, usa

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You could try putting washers between the screw and washout arm.

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03-22-2009 04:23 AM  8 years agoPost 6
Mr Scout.

rrNovice

milpitas,ca,USA

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Try taking the screws out and put a dab of lock tight on the tip of the screws and retread them,not too tight.put a drop of marvel oil on the bearings.that should fix your issues.if not,buy new bearings or new washout arms.

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