Gas tank tempereture

Coval_PL · #1 08-05-2009, 07:39 AM

I have to ride my bike to work, and only safe place to leave my bike there is very sunny. Isn't it dangerous to leave black gas tank full of gas on the sun for couple of hours? Should I cover it by something blocking sun?

midatlanticcycle · #2 08-05-2009, 08:35 AM

it will be safe but a white cover/towel is excellent idea. make sure the vent is open on the tank cap. i've seen a few of the factory caps with the vent obscured. no vent means bigtime tank pressure build up and either flooding/starvation of fuel to the carb

Coval_PL · #3 08-05-2009, 09:01 AM

Vent? I'm sure there is some spring inside the cap, but i'n not sure if this is the vent or close mechanism only. I have to check it. I think there should be some pressure protection, but i'm not sure, that's why I've asked.

jared8783 · #4 08-05-2009, 09:24 AM

there should be a very small hole in the top of the lid that is 24/7 open. it should be size of about pencil lead (graphite) or smaller

Venice Motor Bikes · #5 08-05-2009, 09:38 AM

Quote:

Originally Posted by Coval_PL

I have to ride my bike to work, and only safe place to leave my bike there is very sunny. Isn't it dangerous to leave black gas tank full of gas on the sun for couple of hours? Should I cover it by something blocking sun?

The gas WILL NOT explode from being in the sun!!! It takes a spark to ignite it.

I was watching some show, & a motorcycle cop was talking about how when they ride the bikes in a parade, the engine heat will make the gas in the tank boil!!!

Coval_PL · #6 08-05-2009, 09:49 AM

Quote:

Originally Posted by jared8783

there should be a very small hole in the top of the lid that is 24/7 open. it should be size of about pencil lead (graphite) or smaller

Yhanks

I'll see. So if there is this vent, covering tank isn't necessary?

HoughMade · #7 08-05-2009, 10:10 AM

I wouldn't worry about it. How many self destructing black motorcycles have you seen?

Junster · #8 08-05-2009, 06:23 PM

If you get a little fuel residue on the top of tank from riding with it full then you know it's venting.

Coval_PL · #9 08-06-2009, 02:59 AM

I checked the tank cap, and there are four little holes on the bottom of cap so this is the pressure protection. Thanks.

jared8783 · #10 08-13-2009, 08:16 AM

You know now that I think of it a vent on the tank is not important in regards to flamability. And technically speaking your fuel will expand and become closer to a vaporous state the warmer it is. Meaning your fuel is more efficient when it is at higher temps. So while I wouldn't encourage the heat I wouldn't discourage it either.