Author Topic: Tank thickness  (Read 899 times)

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Offline VTCBike750

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Tank thickness
« on: May 26, 2018, 05:24:57 PM »
Does anyone know how thick the metal is on our gas tanks?

I have a '72 and a '71 tank. Any reason the '71 would feel thicker or is it just in my head?
« Last Edit: May 26, 2018, 05:52:37 PM by VTCBike750 »
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Offline HondaMan

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Re: Tank thickness
« Reply #1 on: May 26, 2018, 06:58:18 PM »
Does anyone know how thick the metal is on our gas tanks?

I have a '72 and a '71 tank. Any reason the '71 would feel thicker or is it just in my head?

0.2-0.3mm sheet metal.
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Offline 754

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Re: Tank thickness
« Reply #2 on: May 26, 2018, 07:41:24 PM »
 That is only 8 to 12 thou, they must be thicker.
Mi am leaning toward 1 mm or more, keep in mind the top is  2 pieces welded and ground off in the middle of the tank.
 Never seen one leak there either.
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Offline VTCBike750

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Re: Tank thickness
« Reply #3 on: May 26, 2018, 08:37:06 PM »
The tank that I think is a 71 has a different fuel cap and nuts inside to secure the petcock to the tank.

1971:

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-Adam

1972 CB750 (current project)
http://forums.sohc4.net/index.php?topic=87951.0

Offline VTCBike750

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Re: Tank thickness
« Reply #4 on: May 26, 2018, 08:37:36 PM »
1972:

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-Adam

1972 CB750 (current project)
http://forums.sohc4.net/index.php?topic=87951.0

Offline VTCBike750

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Re: Tank thickness
« Reply #5 on: May 26, 2018, 08:40:02 PM »
Ive heard they are 18 gauge, 1/20", 1.27 mm

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-Adam

1972 CB750 (current project)
http://forums.sohc4.net/index.php?topic=87951.0

Offline 754

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Re: Tank thickness
« Reply #6 on: May 26, 2018, 08:49:48 PM »
First gas cap shown   looks early.
 Is there wrinkles in the tank when you look straight into the filler hole ?
Any evidence of original color?
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

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73 836cc.. Green, had it for 3 decades!!
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Offline VTCBike750

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Re: Tank thickness
« Reply #7 on: May 26, 2018, 09:12:15 PM »
Not a wrinkle tank. Original color appears to be ruby red.
-Adam

1972 CB750 (current project)
http://forums.sohc4.net/index.php?topic=87951.0

Offline PeWe

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Re: Tank thickness
« Reply #8 on: May 27, 2018, 10:13:57 AM »
Over 1mm sounds thick for me. Anyone that can make a cut in a tank? ;)
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Offline 754

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Re: Tank thickness
« Reply #9 on: May 27, 2018, 11:28:27 AM »
I have a cut out gas cap somewhere, with several inches of steel on either side, but not nearby.
Someone will have a cutc tank or cutout cap.
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My next bike will be a ..ANFOB.....

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Lost quite a few CB 750's along the way

Offline DurangoCB

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Re: Tank thickness
« Reply #10 on: May 28, 2018, 07:16:17 AM »
The second photo is the cap from a '71. 
1971 CB500 Four- current project http://forums.sohc4.net/index.php/topic,170622.0.html
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