Round Gas Tank

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Original Smith
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Round Gas Tank

Post by Original Smith » Sat Sep 06, 2025 3:51 pm

My gas tank I believe is original to my 1913 Runabout. The plating is original, and the inside is as clean as the day it mas made. What I noticed yesterday, is there is a nub on the bottom I haven't noticed before. It appears to look like the head on a 6# nail, and only sticks down about 1/32". It is obviously original to the tank, but why is it there? It is almost centered on the bottom.


Dan Hatch
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Re: Round Gas Tank

Post by Dan Hatch » Sat Sep 06, 2025 4:31 pm

Drip of zinc from the hot dip galvanizing?


TXGOAT2
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Re: Round Gas Tank

Post by TXGOAT2 » Sun Sep 07, 2025 9:15 am

Do those tanks have an internal baffle of any kind?


Topic author
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Re: Round Gas Tank

Post by Original Smith » Sun Sep 07, 2025 10:26 am

Yes, this one does. I have no idea how many.

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DanTreace
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Re: Round Gas Tank

Post by DanTreace » Sun Sep 07, 2025 10:32 am

Suspect that nail head blob is from the soldering done on the tank seams. The tanks were formed with galvanized sheet metal, rolled and seams rolled on the end caps.

That blob might be result of this operator, looks crosseyed to me. ;)


IMG_9868.jpeg

And, yes, splash baffles are soldered in the tanks prior to end caps.

IMG_9867.jpeg

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Re: Round Gas Tank

Post by big2bird » Sun Sep 07, 2025 11:30 am

Original Smith wrote:
Sun Sep 07, 2025 10:26 am
Yes, this one does. I have no idea how many.
Two


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Re: Round Gas Tank

Post by TXGOAT2 » Sun Sep 07, 2025 11:38 am

Maybe the splash plates have rivets through the shell to secure them, or maybe a dimple in the shell for the same purpose.


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Re: Round Gas Tank

Post by big2bird » Sun Sep 07, 2025 11:43 am

20250907_084113.jpg
Soldered in these two beads.

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