There was some discussion about whether this 1 quart overflow tank could be filled with gas during a fill up. This would effectively increase the capacity of the tank. Since several organizations limit the total combined capacity to 11-1/2 gallons this catch tank might be considered part of the tank capacity.
While it is theoretically possible to fill this tank, it seems impractical. You'll notice that the overflow tube is very small. I blew into the vent line and the air flow was pretty slow. Fuel flow would be even less. Since there is very little "freeboard" (distance between the top of the vent tube and the top of the filler neck) it would seem that trying to fill this tank would take a VERY long time.
That being said there are cheaters in any sport and somebody might try it. Personally, I'd say "let them". The time penalty for filling this catch tank would far exceed any benefit gained by an extra quart of fuel. :-)
This is an overall shot of the tank.
The client is going to fabricate the mount to the bike. You see two plates bolted to the base of the tank. These can be removed so his mounts can be bolted to them.
This is a close shot of the vent fitting coming out of the bottom of the tank.
Here you can see the overflow tube just poking into the filler neck.
The lighting is a little weak but you can see the catch tank just below the filler neck.
Thanks for looking. Feedback and comments are welcome.
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