Tubing sizes?

[Dr.McNinja]

Can anyone share with me what tubing sizes I'd need to replace all my fuel/air/vacuum/brake lines with silicone tubing? Maybe a good place to buy them as well? No one local sells metric tubing. The heat here is going to keep wrecking this tubing and I figure while I'm wrenching on the rest of the bike, I may as well start replacing all my tubes since I cracked a handful of them taking stuff apart.

thanks!

[floatingLomas]

Fuel: 7mm or 1/4" (snug) or 5/16" (loose), but use fuel line.  Tygon is apparently the best route.

Vaccuum: ?mm, 1/8" seems to fit.  Ish.  I might know soon how bad an idea using aquarium tubing was.  Or it might be fine.  Meh.

Brake: Uhhhhh, no.  Stainlesss.

[J_Walker]

i've used water bladder tubing for a quick fix to get myself home about a year ago, after the tubing just cracked and gave way.. it did me about 20 miles.

but yeah. 5/16ths is good, more space for the fuel to flow through = less resistance. just make sure to use little pipe clamps [don't over tighten its only plastic!]

[Dr.McNinja]

Fuel: 7mm or 1/4" (snug) or 5/16" (loose), but use fuel line.  Tygon is apparently the best route.

Vaccuum: ?mm, 1/8" seems to fit.  Ish.  I might know soon how bad an idea using aquarium tubing was.  Or it might be fine.  Meh.

Brake: Uhhhhh, no.  Stainlesss.

What about air lines?