I have a Gemini, which is pretty original except for the gas tank. It has some dumb wheezer tank, it looks crazy. So i got talking to this speedway guy (former member here, you may remember him), and he wanted some old shrike/scarab jackshafts/drivens that i have (on speedways i change them out to new comet series20 parts.) He offered to trade a Gemini gas tank for them. Seems Ok to me. He sent pictures, and i could tell it was a rusty... but when i got the tank, man it was a mess. it leaked around the bungs (it has two). I was able to TIG weld those, but after the tank held liquid for a while, it started to leak down the lower spine.
So i sand blasted the tank, including the inside. Man it got worse, a lot worse. So bad it was obvious i would have to rebuild the entire tank.
What follows is that tank rebuild. this was done with mostly normal tools. a TIG welder is needed at some point though. It's not an easy job, but it is do-able. I think a regular joe could probably do this if they have a welder and a hand (flap) grinder.
Tank after sand blasting. Looks ok, until you see the bottom...
Bottom of tank where the problem lies... It's swiss cheese...
So i sand blasted the tank, including the inside. Man it got worse, a lot worse. So bad it was obvious i would have to rebuild the entire tank.
What follows is that tank rebuild. this was done with mostly normal tools. a TIG welder is needed at some point though. It's not an easy job, but it is do-able. I think a regular joe could probably do this if they have a welder and a hand (flap) grinder.
Tank after sand blasting. Looks ok, until you see the bottom...
Bottom of tank where the problem lies... It's swiss cheese...