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Building Tips and technical articles. => Building techniques => Topic started by: Bill Little on June 13, 2006, 07:30:53 AM
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I remember Ted Fancher showing a mounting system where a bolt is run through the center of the tank and held by a blind nut on top of the mounts. It means that you have to solder a sleeve through the tank, which is not a problem to do.
How many of you have done this?? And Ted, do you still mount yours that way?
Thanks!
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Hi Bill:
I've done it twice...the first was the SV-40 (Vector) it work out well but I had to make sure the tank had shimming on the sides diagonally so the skew would stay in place (for nice cut-off)
The bolt mount needs to be very secure. In the tank, I used a piece of tubing and grommets top and bottom to increase the solder area. I used 4-40 screws instead of the nylon larger bolt that Ted drew in the TP.
I started with my Katana the same way but could never keep the bolt tight. It vibrated around and eventually (250 flights) the tubing developed cracks and leaked.
THis spring I took it all apart, plugged the holes, and put in the ply clips and cross bars that is the typical mounting method.
A single bolt does not seem secure enough for the 7 oz tank.
FWIW
Curt
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My experience was the same as Curts......Developed leaks around the tube going thru the tank. No more..... n1
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Well, I thought I had commented, but apparently not. I bury a fore and aft hook in the engine mounts and rubberband the tank in. I'm not sure my soldering skills would do the job with the bolt through.
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I used it without problems, I used a piece of 1/4" brass tube and put a small tin plate as a re-inforcement on the top and bottom. where the tube went through the tank. I also used a 1/4x20 plastic screw threaded into a hardwood block. Worked fine for me. hundreds of flight without a problem.
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Yep...mine went about 350 flights before it began being a problem.
Curt