how do you make a water bottle gas tank

Very cool Unior.

__________________
Work like you don't need the money, Dance like no one is watching and Love like you've never been hurt

I want 2 ride my bicycle

where did you put the vent hole?,i though whatever tanks we had on here had to be vented like the stock ones.

I used the smallest drill bit i had and drilled a hole at the top rear of the bottle. The vent hole sucks cause it leaks all over when you refill it. Plus my range was rather limited. It got me to work though.

In regards to soldering your gas tank, I've soldered two motorcycle gas tanks and I can tell you what worked for me.

First I emptied all the gasoline out of the tank then took it off the bike and let it sit upside down the rest of the day in the sun.

Then I took one end of my shop vac and and slid it over the tail pipe of my car and put the other end in the gas tank of the motorcycle.

I turned my car on and let it run for fifteen to twenty minutes with the exhaust venting out the petcock. It worked great! All the gas fumes were displaced with exhaust fumes.

If I had any doubts about gas fumes (which I did) all I had to do (which I did) was stick my nose in the gas tank after pulling the vac hose out to see if I could smell any gas. All I could smell was exhaust fumes and nothing else.

Where I got the idea from was the boys at the triumph shop back in the 80's. I tried several stop leaks products to no avail until I finally took them up on their recommendation.

I agree with what everyone else has stated here about gas fumes, VERY DANGEROUS!

NEVER USE FIRE OR A TORCH AROUND GAS OR GAS FUMES!

RPM



RPM

Opps!

I left an important word out here. 'hose' which will clarify the explanation.

The line should read:

Then I took one end of my shop vac HOSE and slid it over the tail pipe of my car and put the other end in the gas tank of the motorcycle.

that's how diesel tanks are welded on big rigs.. they use the truck exhaust in the tank.. does work good... with a liquid to cut the fumes, you can still have an air gap that could flash on you.. but with the exhaust gas, all air is replaced

HEY that picture---its urine in that bottle you found not gas----

not my pictures,i found them online to use for refrence.

I'm so confident in this procedure of soldering a leaky motorcycle gas tank Matt I have no quirms what so ever about it. I'm speaking for me of course because I'm very meticulous when it comes to gas and fire.

I have no experience with any other type of gas tanks, large or small just the motorcycle tanks I've done. I wouldn't think twice about soldering one of these small tanks that come with the 49cc or 68.5cc kits. Piece of Cake!

Do know if Mopedman ever got it repaired?

RPM

no doubt... the exhaust gas method is practiced all the time.. usually, it's left flowing into the tank during welding, but such a small tank, would hold the exhaust gasses for a while.. If I were to try it, it would be using that method... I know a guy who got hurt pretty bad when a 13 gallon tank went off in front of him.. filled 1/2 with water.