Fuel tank vent lines
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Fuel tank vent lines
I know this topic has been discussed quite a bit, as have most topics on this forum, but does anybody know, off hand, what the diameter of the fuel tank vent lines is? I was experiencing fuel fumes in the cabin and found a speed clamp to be decayed and broken. The flexible connectors seem ok, but I'd like to replace everything while I have it opened up. Any other info, such as type of flexible lines and clamps used is appreciated.
The hangar is a forty-minute-plus drive from my computer...
The hangar is a forty-minute-plus drive from my computer...
Chris
1953 170B N3234A #25878
1953 170B N3234A #25878
Another common cause of fuel fumes is hard braking while landing with full tanks. (The goose-neck vomits fuel onto the cabin roof.)
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
Thanks for the replies. I bought the line and clamps but am having a bear of a time getting the line over the vent line one way and back over the vent "T" side. It's a lot of work for only a half inch gap!
I might try getting some lighter weight flexible fuel rated line and try it.
I might try getting some lighter weight flexible fuel rated line and try it.
Chris
1953 170B N3234A #25878
1953 170B N3234A #25878
Use lubricant and slip the rubber hoses onto the vent line almost completely, then with the vent line in place, extend the hoses back off the vent line and onto the "T" and gooseneck.canderson wrote:Thanks for the replies. I bought the line and clamps but am having a bear of a time getting the line over the vent line one way and back over the vent "T" side. It's a lot of work for only a half inch gap!
I might try getting some lighter weight flexible fuel rated line and try it.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
I was using my girlfriend's muscle power to try to help instead of her cold cream! I had WD-40 and grease on the parts and it was still difficult. Had to give up after getting only one side done. I am still thinking of trying the Nylaflow Nylon tubing. Might this be a little easier?
Chris
1953 170B N3234A #25878
1953 170B N3234A #25878
The "S" is actually an old designation...but it is sometimes still found in-stock at some suppliers. The newer designations disregard the "S".
But the "O" refers to an annealed condition which is very soft and flexible. If you can find some annealed "O" tubing it should be very easy to flex in/out of alignment.
But the "O" refers to an annealed condition which is very soft and flexible. If you can find some annealed "O" tubing it should be very easy to flex in/out of alignment.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
Interesting. What I'm afraid of is having to put so much stress on the tank-to-vent line connections that they might start leaking once I've fixed my initial problem. Or breaking the weld on the T portion of my vent system. Perhaps I wasn't using the right lubricant. The original manufacturer probably didn't forsee replacement issues 50+ years out.
Chris
1953 170B N3234A #25878
1953 170B N3234A #25878
Re: Fuel tank vent lines
Before:
After:
Fuel smell gone!
After:
Fuel smell gone!
Re: Fuel tank vent lines
hello
where is this linkage located on the airplane?
I think I need to fix mine as well
dave
where is this linkage located on the airplane?
I think I need to fix mine as well
dave
1951 170A 1468D SN 20051
1942 L-4B 2764C USAAC 43-572 (9433)
AME #17747