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Old 04-03-2010 | 09:51 PM
  #686  
FlyEng
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From: Tavares, FL
Default RE: SAP 180 (Syssa Performance)


ORIGINAL: cmoulder

Pipe tunnel

Guys, thanks for the pipe mounting ideas!

There's no way the stock FG pipe tunnel was going to work for the ES pipe, so today I made the channel a little larger and lined it with 1/16" balsa sheet. Much lighter than the FG actually, though I didn't weigh it. I will use a small section of the FG tunnel for the forward part, which will be attached with screws so that I can access the area for the landing gear and behind the firewall.

The hard part was getting the channel portion of all the formers the same so that the damp balsa sheet would fit all of them. For some strange reason none of them were the same shape, so I modified the center one and made a little template of it which was used to shape the others.

I made a hard point for the pipe mount on one of the formers which was as Ed suggested about 2/3 of the way down the pipe. I have the DB Hush mount but it sticks out too far, so I will borrow you guys' ideas and come up with something now that I understand the principle.

Here are some photos, in no particualr order...
Bob,

Is there a chance that the remaining portion of your fiberglass tunnel is available for purchase or scrounging? Like you, I cut my tunnel longer and would like to make an extension. Using your leftovers will be easier than molding my own. That is if you can entertain my request. Thanks.

David