Fuel tank

[Alan Simmonds]

Good Thread!  But which is right?  
 
Stop the clunk falling to the front of the tank and potentially crimping
the fuel line
or
Use a thin walled line that will always fall to the front of the tank.
 
Does it make any difference with the engine ticking over?
 
I use the thin walled tube myself but would be interested to know which
camp is the majority.
 
Alan Simmonds
-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of Bob Kane
Sent: 29 April 2003 04:56
To: discussion at nsrca.org
Subject: Re: Fuel tank


Does it quit on the way up, or on the way down?  What kind of engine are
you using? 
 
There are at least two possible problems. Your idle setup could be off,
causing the changing fuel flow during this manuever to kill the engine.
The engine should run for a long time at idle with the fuel remaining in
the line even when the clunk is "high and dry" so to speak, certainly
long enough to finish the downline and level off, restoring fuel flow.
The other problem could be a pinched fuel line inside the tank. I had
similar problem, flameouts after a stall turn. I discovered the clunk
would pull the feeder line into the fuel on a downline but the clunk
would stay in the front of the tank, folding the feeder line and
starving the engine of fuel. I now assemble my tanks with an aluminum
tube in the pickup line so the clunk can't fold back on itself.
 
I would make sure the idle setup on your engine is reliable. It should
idle for a very long time with no change in rpm.  Run the engine on the
ground at full throttle, then pull back to idle. If it runs at steady
rpm, all is fine. If it slowly slows down and dies, it is rich. If is
speeds up then dies, it is lean.

Jerry Wilson <jerrywil at swbell.net> wrote:

I have just found a problem that I'm sure many people on the list have
solved before.  Often while doing a stall turn, my engine would stop and
a dead stick landing would follow.  After discussing this with a friend
at the field it was suggested that it could be a fuel tank problem.  So
I took the tank out tonight to have a look.  With fuel inside I could
see that when the tank was inverted as in a stall turn manouver as you
go over the top,  the clunk would often rest against the side of the
tank.  So when the nose is pointed down, the clunk could hang at the aft
end of the tank but the fuel is at the nose. 
 
I've changed the length of the tubing (shorter and longer) and even
added a wheel collar to the line at the clunk, but so far I can't tell
much difference.
 
Any suggestions would be appreciated,
 
thanks,
Jerry

 



Bob Kane
getterflash at yahoo.com 


  _____  

Do you Yahoo!?
The New
<http://us.rd.yahoo.com/search/mailsig/*http://search.yahoo.com> Yahoo!
Search - Faster. Easier. Bingo.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20030429/a30a6879/attachment.html