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Originally Posted by Shaker

To me, this thread was interesting when it was about building fuel tanks on the cheap with more common components that resulted in a better solution than those offered from Dubro, Sullivan, B&B, etc. It seems kind of strange to take a thread about building inexpensive tanks, and then throwing $30+ worth of hardware at it. Just seems like the original intent of the thread has been lost.

So true!

Originally Posted by TroubleMaker

202 pages on leaking fuel tanks caps... geeezzz lol

Has someone devised the perfect tank yet? Can someone please spare me the trouble of reading all 202 pages... please...

RotoFlow? yes or no?

NO

Originally Posted by TroubleMaker

202 pages on leaking fuel tanks caps... geeezzz lol

Has someone devised the perfect tank yet? Can someone please spare me the trouble of reading all 202 pages... please...

RotoFlow? yes or no?

If like others in this thread, you want the personal satisfaction of making your own, read say about the past 25-30 pages of THIS msg thread & educate yourself how it's done.

List of supplies & links to them is consolidated here.....
https://www.flyinggiants.com/forums/...ad.php?t=71677

If on the other hand you'd prefer someone else do such for you, head over here.....
https://www.flyinggiants.com/forums/...ad.php?t=68291

Originally Posted by gohighflyrc

NO

Good Boy...

Scott

i dont know why but i dont trust roto flow tanks in one of my 3d planes....i picture it sucking in air at one point

When you put the PSP hose fittings together do you use any blue loctite on the threads or does the fitting o-ring keep enough tension on the nut to keep it from unthreading?

O-ring does a great job, but I do use a bit of Seals-all around the outside (nut-side) before I torque it home just to be absolutely sure!

Just so happens I just made my tank for this seasons' plane today, I put just a tiny drop of thick CA on the threads just before I tighten up the nut.


Scott

Has anyone run into the problem where a big enough tank winds up being too long? Are there any water bottles that have a bit more girth instead of length for the capacity?

Originally Posted by Shaker

Has anyone run into the problem where a big enough tank winds up being too long? Are there any water bottles that have a bit more girth instead of length for the capacity?

Doug,

There is an option that could work for you, depending on the amount of fuel you want to carry and how much width you have to work with.

I did this on my 102" OMP Yak SP-55M as I wanted to have my fuel supply as close to the CG as possible. I had plenty of room for a 1000 ml Fiji bottle but there was too much gas/oil forward for my taste. LOL.......the extra work and cost probably doesn't make a hill of beans difference anyhow.

I used two 500 ml Fiji bottles so the volume and weight is spread across the fuel deck instead of forward. The fill tube runs to the left bottle and I have a couple of fittings on the bottom of the bottles so they can equalize. Carb supply is the right bottle. It just take a little more time to fuel/de-fuel but haven't run in to any problems otherwise.

Both bottles are vented to a t-fitting; that is working fine also. This would probably work for the 300 and 1000 ml bottles as well.

Yeah, I've been thinking about doubling up on the fuel tanks to minimize CG shift with fuel burn. Of course that means I've got $60 in fuel tanks instead of $30.. lol.

What size fuel line are you using with your PSP cap and fittings?

Originally Posted by Ohio AV8TOR

What size fuel line are you using with your PSP cap and fittings?

I'm using 0.125" I.D. Tygon and Viton on my tanks. It's a stretch to get the hose end over the fittings. To make it easier I:

1. Pre-stretched the hose end with a No. 2 Phillips
2. Used a little heat to make the hose end more pliable.
3. Use a little gas/oil mix to help the hose end slip over and push on to the fitting.

My vent line is 3/32" Tygon but the vent fittings are Tettra, they are a little smaller than the PSP.

Originally Posted by Scott Gerber

Good Boy...

Scott

Got some.....