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Old 05-13-2014, 10:53 AM   #21
Jae
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Quote:
Originally Posted by messiah View Post
Did I miss the joke?
That really doesn't look too bad. Doesn't look like much metal forming, just cutting and welding flat sheet onto an existing tank to put on a flat top and slight bulge at the rear.

, you've inspired me to go ahead and cut up the damaged sportster tank and see if I can make something cool and/or usable out of it. I've been having so much fun welding that I'm looking for excuses to do it more.
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Old 05-13-2014, 01:01 PM   #22
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Quote:
Originally Posted by El Pachuco View Post
you got skillz!

I'm curious............how much could you have bought a metal tank for?
Around $750 to $1100 depending on style and material. Having said that I know somebody will post up a place that sells tanks for cheap but I wanted a specific style and couldn't find it in metal.
I did find a guy that would custom build one but he wanted $900.
The others were similar but to expensive and I I still wouldn't have the tank I wanted.
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Old 05-13-2014, 01:06 PM   #23
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Quote:
Originally Posted by Jae View Post
That really doesn't look too bad. Doesn't look like much metal forming, just cutting and welding flat sheet onto an existing tank to put on a flat top and slight bulge at the rear.

, you've inspired me to go ahead and cut up the damaged sportster tank and see if I can make something cool and/or usable out of it. I've been having so much fun welding that I'm looking for excuses to do it more.
Not sure if you mean the tank I made or the 636 tank.
My tank has compound curves on the top and 2 front sides. Just the top took hours of hammering and the front sides were very labor intensive because of the tightness of the curves.
The rest of the tank is pretty much flat pieces but they all have to fit just right.
Also the was no adding to the existing tank as it was fiberglass. The new tank is all steel.

As far as your sportster tank, go for it! The enjoyment of welding is what made me give it a try and modifying an existing tank would be much easier than building new from scratch.
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Last edited by bumblebee; 05-13-2014 at 01:08 PM.
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Old 05-13-2014, 02:13 PM   #24
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Quote:
Originally Posted by bumblebee View Post
Not sure if you mean the tank I made or the 636 tank.
sorry, it was a 2 part response: the part about flat sheet referring to the 636 tank pic he posted, the part about being inspired to try it myself to your original post. I'm pretty impressed by your work (especially given the tools you used), as I have no experience forming metal other than using a bending brake and the accidental dent I end up with occasionally.
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Old 05-13-2014, 03:04 PM   #25
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Quote:
Originally Posted by Jae View Post
sorry, it was a 2 part response: the part about flat sheet referring to the 636 tank pic he posted, the part about being inspired to try it myself to your original post. I'm pretty impressed by your work (especially given the tools you used), as I have no experience forming metal other than using a bending brake and the accidental dent I end up with occasionally.
It's not hard to form metal the way I did it, it just takes patience and a strong pimp hand. When you pinch the sheetmetal between the hammer and an anvil it stretches or expands. You just have to figure out how to use that expansion to make it curve the way you want.
My suggestion would be, go to a metal/welding supply place and buy a piece of sheet. Maybe 3ft by 4ft. It won't cost much.
Get some tin snips at Harbor freight and cut off a chunk and start hitting it. You'll get the hang of it
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Old 05-15-2014, 10:08 AM   #26
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Quote:
Originally Posted by bumblebee View Post
It's not hard to form metal the way I did it, it just takes patience and a strong pimp hand. When you pinch the sheetmetal between the hammer and an anvil it stretches or expands. You just have to figure out how to use that expansion to make it curve the way you want.
My suggestion would be, go to a metal/welding supply place and buy a piece of sheet. Maybe 3ft by 4ft. It won't cost much.
Get some tin snips at Harbor freight and cut off a chunk and start hitting it. You'll get the hang of it
Haha, I bought quite a few 2'x2' sheets last time I was at Northern Tool because they had them 80% off. I've got a bunch of different tin snips, just haven't bothered with the hammer/dolly set yet.

One thing I've read about is people using sand bags to hammer against. I guess I just need to get some different hammers and just start playing around and see what happens.
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Old 07-29-2014, 02:34 PM   #27
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Congrats my Friend you are a true Craftsman,that is so awesome and you made it!
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Old 07-29-2014, 04:44 PM   #28
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Thanks! I forgot about this thread, lol.
Unfortunately the story has a sad ending. ..
I screwed up the tank. I decided since the ethanol attracts water from the air that the tank might rust inside. I applied a special aircraft fuel tank coating that should have been able to withstand the ethanol, no problem. However, I applied it too thick and it quickly started coming loose in chunks.
I now have a guy in Pennsylvania building a custom tank out of aluminum. It'll be sweet but the whole reason I built the tank was to avoid that cost (which is substantial).
Oh well, lesson learned and now I have a cool ornament to hang on the wall.
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Old 07-29-2014, 09:39 PM   #29
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Garage art is cool too.
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