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48 Ragwing tank neck
Posted: Mon Feb 25, 2008 1:03 pm
by n3833v
I have a leaking neck on my tank . The Parts breakdown shows multiple gaskets, it doesn't seem to have gaskets. I want to look with a mirror inside to see what I can see. The top fabric ring seems to screw into tank flange. Anyone had a left tank out and remember how the neck is?
John
Posted: Tue Feb 26, 2008 1:31 am
by 3958v
John I have a tank out of ragwing with a filler neck you are welcome to come check out. I cant bring it up to you as the wings are off my bird getting some rejuvination. If you can still fly yours I would be happy to meet you at N57 Bill K
Posted: Tue Feb 26, 2008 2:48 am
by Bruce Fenstermacher
John if they are the same as later A and B tanks you can easily cut your own gaskets. I have paper templates I can email you to print and use.
Posted: Tue Feb 26, 2008 12:31 pm
by n3833v
I'm going to have a friend use a borescope to see if the tank is cracked or what might have happened. The neck looks to be solid on the tank. Thanks and I will check with you later.
John
Posted: Tue Feb 26, 2008 2:14 pm
by GAHorn
N9149A wrote:John if they are the same as later A and B tanks you can easily cut your own gaskets. I have paper templates I can email you to print and use.
The tanks and caps are very different from A/B tanks. They are essentially C-120/140 tanks. Unfortunately, there were at least two different types of tanks installed in 120/140 aircraft. The earlier type had six mounting screws in the neck adaptor which are prone to leak. They had rubber gaskets, little rubber washers, that would leak. Tightening the screws may solve the problem on that type. Otherwise, I don't believe there were any gaskets on the original fabric wing aircraft.
The later, all-metal 140A had a neck which screwed down/into the tank similar to the 170A/B aircraft, and also had gaskets, of course. I don't believe this was the tank used on the 170.
I've just exhausted my slim knowlege on that subject.
Posted: Tue Feb 26, 2008 6:13 pm
by mrpibb
Do you have a standard filler neck, or has it been moded? My tanks have a filler neck welded to a plate that screws down on to the tank with the wing fabric in between with a healthy helping of polysulfied sealant. Not my doing, donsn't leak, no water gets in, not gonna touch it.
see pic
Re: 48 Ragwing tank neck
Posted: Fri Feb 29, 2008 12:45 am
by 3958v
Original Rawing caps are not like A or B model caps or for that matter like 140 caps they are simlar or the same as 195 caps. The tanks are 140 tanks with different fittings welded to them. Bill K