|
Well the tube laying on the floor was too short, so I fabricated a longer one.
|
|
I could see that Van's didn't make the holes in the brackets aligned with each
other (why the heck not?!?!), so I needed to joggle this aft by 5/16 inch.
|
|
In order to determine the location of the hole for the purge line, I started by
making a template from a scrap piece of 0.025 alum. I drilled a 1/2 inch hole
to match the existing fuel line hole and used a snap bushing to hold it in place.
|
|
Then some layout work and a pilot hole where the proposed new hole will be.
|
|
Marking through the pilot hole on the bracket. It ended up being quite close to
both the floor stiffener and the forward face of the bracket.
|
|
Hrm...if it's too close to the forward face of the bracket, the check valve will
interfere with the cover plate. Let's see...the check valve is 1 inch diameter, so
I need a minumum of 1/2 inch from the cover plate. On second thought make that 5/8
inch.
|
|
I created a new offset line 5/8 inch from the front edge and drilled another pilot hole.
(new pilot hole not yet drilled in this image).
Hrm...as I'm editing this update, I can see that I did something wrong...the 2 inch radius
shown represents the distance from the centerline of the main fuel line to the centerline
of the check valve. However, I should have drawn that radius from the joggled position
of the tube. I can see I started to do that...hence the 9/16 inch offset line, but somewhere
along the way I must have gotten distracted. No matter...you'll see shortly that I ended
up doing a lot more iterations and still havent drilled the hole in the bracket.
|
|
Here's the little sharpie circle showing the proposed location of the purge line.
|
|
In order to connect the purge line (which is 1/4 inch diameter tubing) to the check
valve (3/8 diameter tubing), I need a reducer. However, since the reducers are male
on both ends, I need a short little section of tubing to join the reducer to the
check valve. It was a little tricky trying to minimize the length as much as possible.
|
|
Looks like 2 inches is about the shortest I'm going to be able to make.
|
|
Note the AN6 to AN4 reducer fitting in the bottom right hand corner.
|
|
Dang...still too long. Maybe I can get a short female to male reducer fitting online.
|