Fuel Tubing Question

[Chris Wall]

I have an OS 105HZ-R and was using "Du-Bro Large Super Blue Silicone Tubing" (For Glo-Fuel ONLY. Won't crack or harden and fits securely on fuel fitting. Inner Diameter: 1/8"). It almost feels too large on the OS regulator nipple! I have doubled another section on top of the tubing to help hold the seal. Is this the correct size or am I too large, should I change to their medium? Just wondering what others are using for tank to engine inside diameter?

[Rodney Kirstine]

I'm using Du-bro medium on mine.

[Chris Wall]

Thanks Rodney! But, this one was clearly a case of RTFM on my part! Manual for the OS states 5-5.5mm od and 2.5mm id, duh! So, I guess the Du-Bro large is overkill @ 3.17mm...

[Rodney Kirstine]

I did the same exact thing. Reading manuals, ha!

[Glenn Goodlett]

I use the bigger stuff because I accidentally bought a whole roll. I use the wire spring clamps on the smaller connections like the OS fuel nipples. Talk about stupid, I let it pop off in flight four times one day before I decided I needed some kind of clamp. Never a problem since using the clamps.

[Rob43]

One differentiator for me has been the different brands' medium size varies in OD. For line clamps, I've not liked some of the lines. I have really liked Sullivan S220 (3/32 ID. I kept trying to buy good line at my LHS, and all they ever has was Dubro, which is fatter on the OD. So I bought a 50' roll of the Sullivan S220. I don't know the precise OD, but the clamps fit pretty nicely, and it's very high quality material.