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bcondrey
Joined: 03 Apr 2006
Posts: 580
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 Posted: Sun Jun 01, 2008 6:39 am Post subject: TruTrak Torque Enhancer Check |
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Just a reminder to all to double check the security of the set screws on the TruTrak pitch servo torque enhancer when you install. Tim Olson noted an issue early on in his install and I had the same failure. Best guess is that the failure occurred after about a dozen flight hours (I've been hand flying the last several hours so can't pin it down exactly). Issue is that the cable that loops around the wheel and then attaches to the ends with simple set screws. Not sure if there is a flaw in the design, if the set screw wasn't properly tightened when the unit was delivered or if was a simple failure.
During some ground checking of systems last night I discovered that the pitch servo was moving (could hear it) but no control surface movement. After pulling the baggage bulkhead it was obvious that the cable connection had failed.
Following is a link to Tim's website where there are pictures of the torque enhancer and his description of the same issue.
http://www.myrv10.com/N104CD/upgrades/20060816/index.html
It is not difficult to imagine that you could have this failure and jammed elevator controls would be a result. I will be talking to TruTrak in the morning to see what they have to say and will report back. PLEASE check the security of your pitch servo torque enhancers on a regular basis.
Bob N442PM
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bcondrey
Joined: 03 Apr 2006
Posts: 580
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| Posted: Mon Jun 02, 2008 1:41 pm Post subject: Re: TruTrak Torque Enhancer Check |
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Update: TruTrak is overnighting out a new Torque Enhancer. Person I talked to said he saw this on some early torque enhancers but not recently.
Another reminder - check the security of the set screws that attach the cable to the aluminum bar! If you have a problem it is NOT repairable by you due to the required tension on the cable.
Bob
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