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Fuel Bracket Orientation of Holes

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nukeflyboy

Joined: 05 Jan 2008
Posts: 162
Location: Granbury, TX

Posted: Thu Jul 10, 2008 5:03 pm Post subject: Fuel Bracket Orientation of Holes

Here is something wierd.   I have a QB fuselage and am installing fuel lines.  The plans show the Van's fuel valve oriented about 45 degrees to the left (looking forward) relative to the mounting holes on the valve.  Two of the ports then angle aft, left and right, for connecting to the wing tanks.  



However, the mouning holes on the F-1048C valve mounting bracket are about 90 degrees different than the plans.  They must have been factory pre-drilled that way.  Instead of being on the left side of the bracket (again looking forward) they are on the right side.  The part is asymetrical so it is not installed wrong.



With this orientation I can still get 2 ports oriented aft, but on the other side of the valve.  It should work OK that way, but it just seems too wierd.



Have any of you seen this?

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_________________
Dave Moore
RV-6 built and sold
RV-10 built and flying

coop85(at)cableone.net
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Posted: Thu Jul 10, 2008 5:53 pm Post subject: Fuel Bracket Orientation of Holes

Dave,

   I just had a look at a picture of my fuel valve.  You're right, your

mount appears to have been drilled 180 out.  I have the mount holes forward

and left, yours was probably accidently drilled upside down.  You might be

able to just accept it as you said, but if it makes more sense to position

the valve as planned (the biggest concern would be having the output port

facing forward) then I'd drill new holes.



Another option would be to opt for the Andair valve now if you think you

might be so inclined at some point.  I just upgraded my system and it would

have been a lot easier at your stage rather than after it's flying.



Marcus



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daveleikam(at)wi.rr.com
Guest

Posted: Thu Jul 10, 2008 8:01 pm Post subject: Fuel Bracket Orientation of Holes

Yes.  I just installed the valve by looking at the ports and mounting so the 

valve supplies fuel from the correct tank when the valve selector is in the 

corresponding position.  I purchased a red anodized selector replacement 

from Van's and the indicator disc.  The valve mounts fine, but I also noted 

the discrepancy with the plans.



Dave Leikam

#40496  N89DA (Reserved)

Muskego, WI



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MauleDriver(at)nc.rr.com
Guest

Posted: Fri Jul 11, 2008 8:49 am Post subject: Fuel Bracket Orientation of Holes

If a new fuel valve would help, I'd be glad to ship mine since I used 

the Andair.  Just contact me directly.



Bill Watson



Marcus Cooper wrote:

[quote] 



 Dave,

    I just had a look at a picture of my fuel valve.  You're right, your

 mount appears to have been drilled 180 out.  I have the mount holes forward

 and left, yours was probably accidently drilled upside down.  You might be

 able to just accept it as you said, but if it makes more sense to position

 the valve as planned (the biggest concern would be having the output port

 facing forward) then I'd drill new holes.



 Another option would be to opt for the Andair valve now if you think you

 might be so inclined at some point.  I just upgraded my system and it would

 have been a lot easier at your stage rather than after it's flying.



 Marcus



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ninepapa(at)bendbroadband
Guest

Posted: Fri Jul 11, 2008 11:26 am Post subject: Fuel Bracket Orientation of Holes

Dave

 Here is a picture of Randy DeBauw's fuel vavle installed, it looks just

like the plans.



One question, if you were to remove and reinstal it upside down, would the

hole orientation be correct?



John



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daveleikam(at)wi.rr.com
Guest

Posted: Fri Jul 11, 2008 8:41 pm Post subject: Fuel Bracket Orientation of Holes

If you think about the position of the ports,  it works either way.  You 

just plug a different port depending on the mount.  Don't know why Van 

changed the mount from the plans, you just have to scratch your head for a 

minute.



Dave Leikam

#40496  N89DA (Reserved)

Muskego, WI



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nukeflyboy

Joined: 05 Jan 2008
Posts: 162
Location: Granbury, TX

Posted: Sat Jul 12, 2008 3:41 am Post subject: Re: Fuel Bracket Orientation of Holes

Thanks for the replys.

Dave - I think you are right.  After looking at the photo and the plans carefully, it seems that it doesn't matter.  It will work in either orientation.  The plug just needs to be on the other side (to block the unused port).

Flipping it upside down will get the correct orientation, but the bracket will sit about an inch lower, so that is ruled out.  The Andair valve is really nice, but I am too cheap.

Bottom line - it will work as found.  The only loss is a little more hair from head scratching.

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_________________
Dave Moore
RV-6 built and sold
RV-10 built and flying

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