Great video… thanks! Just got finished building my tanks and wish I could have watched it before I began the project. You’re right, all the other videos showing this sealing process never go into real details of the steps involved and this should prove invaluable to anyone planning their fuel tank assembly!
Nice video, thanks Rob. Sealing the fuel tank always seemed like a daunting task to me. Granted you have previous experience and I don't, but it's nice to see that it is in fact achievable. One note on fuel caps - I was taught that fuel caps _should_ leak air because they are a backup vent. Upon more reading that may just be a Cessna thing due to a lack of redundancy in how its single vent works. I see that the Sling has a vent per tank, so I'm not sure if the caps are designed to vent or not.
In this case, I just wanted the caps to seal so I could ensure there were no leaks anywhere else. I'm fine with the caps pulling a little bit of air after installed for the reasons you stated.
Great video! Please double check the squeeze-out at the inside! When I did my tanks I applied EZ Turn only on the outside circumferences of the gasket. You don't want this stuff somewhere in your fuel system blocking fuel.
I really like the way you applied the proseal.... that seems way cleaner than applying it to the ribs and dropping it in together. I'm also struggling to remember the Fuel Tank Return Line fitting... I don't recall mine having that adapter - but that was a couple of years ago so....
When you mounted the back plate on the fuel tanks did you put the rivets on with the tank on the wing? That bit me and I introduced a twist to the wing when putting it on while sitting on the jig...
I have set up and accomplished the test as you did with the same parts on the first tank. I have a factory quickbuild which Sling has told me has already been tested and to just install the tanks. I want to trust but verify. It has been 17 hours now and my guage went from 1.0 psi to .9 psi. Do you consider any drop a leak, or with all of the different connections etc, do you think this is acceptable?
Update: it has now been 24 hours and the psi is back to 1.0psi. I think the small fluctuation I had this morning was the temp change being a little colder this morning. Thanks again for the great video!
Yes I also noticed that when I left my gauge on the pressurized tank for more than 24 hours, it did fluctuate. Ambient temp and barometric pressure had its effect which is normal. Thanks for watching!
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As before, thank you so much for sharing your knowledge and experience. You are helping so many!
I'm so glad!
I agree that 1 PSI is plenty. What really matters is that it holds for a while. An hour is good and overnight is better.
Thanks! I let it sit for 2 days. No leaks!
Great video… thanks! Just got finished building my tanks and wish I could have watched it before I began the project. You’re right, all the other videos showing this sealing process never go into real details of the steps involved and this should prove invaluable to anyone planning their fuel tank assembly!
Great! Thank you for the feedback! And thanks for watching!
Nice video, thanks Rob. Sealing the fuel tank always seemed like a daunting task to me. Granted you have previous experience and I don't, but it's nice to see that it is in fact achievable. One note on fuel caps - I was taught that fuel caps _should_ leak air because they are a backup vent. Upon more reading that may just be a Cessna thing due to a lack of redundancy in how its single vent works. I see that the Sling has a vent per tank, so I'm not sure if the caps are designed to vent or not.
In this case, I just wanted the caps to seal so I could ensure there were no leaks anywhere else. I'm fine with the caps pulling a little bit of air after installed for the reasons you stated.
Excellent video with great additional detail. Thanks a lot for taking the effort capturing it while working with time sensitive materials.
Glad it was helpful!
Great video! Please double check the squeeze-out at the inside! When I did my tanks I applied EZ Turn only on the outside circumferences of the gasket. You don't want this stuff somewhere in your fuel system blocking fuel.
Great tip! Thanks for watching!
flyin bomb
Thanks for watching!
Great milestone!!!
Thanks Ron!
Great video!
Glad you enjoyed it
You have the older version rib. This rib is the older version that used AN6 fitting as return.
Yeah it took me a lot of back and forth with Sling Tech Support to get it all figured out. Thanks for watching!
I really like the way you applied the proseal.... that seems way cleaner than applying it to the ribs and dropping it in together.
I'm also struggling to remember the Fuel Tank Return Line fitting... I don't recall mine having that adapter - but that was a couple of years ago so....
Yes, the proseal seems to go on better that way. I saw a RV guy do it that way.
When you mounted the back plate on the fuel tanks did you put the rivets on with the tank on the wing? That bit me and I introduced a twist to the wing when putting it on while sitting on the jig...
I did not. I immediately ran over to the wing after reading this and checked. No twist. Thanks!
@@TheBaldPilot sweet. Trust me. You wouldn’t have had fun peeling that back off if it had. Although I got pretty good at it. :)
I have set up and accomplished the test as you did with the same parts on the first tank. I have a factory quickbuild which Sling has told me has already been tested and to just install the tanks. I want to trust but verify. It has been 17 hours now and my guage went from 1.0 psi to .9 psi. Do you consider any drop a leak, or with all of the different connections etc, do you think this is acceptable?
Update: it has now been 24 hours and the psi is back to 1.0psi. I think the small fluctuation I had this morning was the temp change being a little colder this morning. Thanks again for the great video!
Yes I also noticed that when I left my gauge on the pressurized tank for more than 24 hours, it did fluctuate. Ambient temp and barometric pressure had its effect which is normal. Thanks for watching!
A condom over the tank vent works as a pressure fuse when testing a tank.
Do they make condoms that small? LOL
Funny, I was going to say a ballon would work because my magnums would never fit lol.