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Terrences Web Site
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Date: 3-5-2008
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Number of Hours: 2.00
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Manual Reference: 6W7A 8
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Brief Description: Plan wing mount for gascolator
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1. EAA Tech Counselor, Clayton Wilhelm suggested that, in addition to the fuel pump, I also mount the gascolator(s) in the wing. I spent a couple of hours planning how to mount them.
2. To mount the gascolator in the wing, I needed to address the following constraints:
- Allow easy access to gascolator drain
- Not obstruct access to the pump, finger screen, or fuel gage sensor
- Provide a safe, secure mount
- Suittable routes for the fuel lines
- Acceptable access to the gascolator for maintenance and/or replacement
3. Clayton said that it would be not be a problem to mount things directly to the ribs.
4. My suggested mount is partially mocked up in Fig. 1. I propose to:
- Rivet L-angle supports to ribs 2&3, forward of the lightening holes
- Rivet stiffener L-angles between the ends of the two supports
- Rivet an .025 shelf over the stiffeners and supports with a hole for the gascolator and nut plates to attach the gascolator to the shelf.
- The inlet fuel line would exit the pump outlet vertically through an 1/8" NPT x 3/8" tubing ell, bend 90°, and go forward to connect to the gascolator inlet by a 1/4"NPTx3/8" tubing ell.
- The outlet fuel line would exit the gascolator through a 1/4"NPT x 3/8" tubing adapter to a 3/8" tube that goes through ribs 2&1 to the bulkhead fitting on the fuselage wall.
- A4 rivets would be used throughout
- Attach a short piece of aluminum tubing to the gascolator drain that would protrude through a hole in the access plate to allow draining the gascolator during preflight.
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Mock up of gascolator mount
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