Columbia 1937 board tracker real gas tank

I normally don't build on ~$150 wally world type bikes but this caught my eye.
http://www.walmart.com/ip/39801995?...7321352&wl4=&wl5=pla&wl6=105949407872&veh=sem

The 'tank' is two pieces of pressed formed sheet metal that butt together in the middle via 2 struts attached to the frame via cut outs, two screws on each side plate, and top mounting hole to strut between the split top bar.

1937parts2-750.jpg


I thought I'd see if I can make it wide enough to get a filler and petcock on it and seal it up like Sportsman does.

tank6.jpg


I made new inner struts to widen the front 7cm wider and the rear 3.5cm wider.
NOTE: flattening the front struts V mount out straight gives you the back strut.

1937tank2b.jpg


That leaves me enough room for the petcock, and with the wider front enough room for the filler I hacked off an old kit tank.

1937tank2t.jpg


I found a spiffy thinner steel filler and venting cap that that is pretty darn cool.
If the bike falls over all you get is a little drip from the tiny vent hole as the cap is threaded with an O ring seal.
http://www.ebay.com/itm/Custom-Fuel...h-weld-in-Bung-SMALL-CUSTOM-NEW-/191495380281


For the petcock I'm going with the new MB kit one with the threaded collar so you can orient the valve lever and it has a double long inner screen with a Normal and Reserve setting.
http://www.gasbike.net/gasoline-tank-switch-for-2.5-L-gas-tank.html

Reserve on this flat tank should be enough for 10 miles or more.

I got some poster board to cut out the templates for the sheet metal and thinking I'll just pop-rivet it on because I found this to seal up the tank.
http://www.caswellplating.com/restoration-aids/epoxy-gas-tank-sealer.html

A gas-proof liquid 2 part epoxy that creates a solid tank inside the shell.

Under $100 to NOT use a peanut tank is worth it, and the bike itself has potential for handlebars down board tracker feel or sit up nice beach cruiser.
Worth exploring for me ;-}
 
All I know is it can be done and I'm digg'n the look ;-}[/QUOTE]

Everyone is going to be digg'n the look! It's just brilliant. It's really been a thrill just o watch the progress!

Jim
 
First things first:

KC has made a beautiful motorized bicycle. Wow!

I don't know about plywood as a material, but I think you are on to something. I like the idea of having an absolutely bombproof motor mounting system, something akin to what you see on motorcycles.As long as you depend on 4 studs as the method for clamping those vibrating 2 strokes down, there's gonna always be room for error and failure.

That's why I think you are on to something here. I was in a big box hardware store and I saw a super strong metal retaining clip made for sinks. With some skillful grinding, something like that old make great based when secured to the seat tube and the downtube.

I am enjoying these innovative ideas!

Timbone
 
I have been experimenting with HT motor mount designs (Mostly on paper), but I have to admit I am intrigued by what I see.

ALSO- Gentlemen, I propose a name for a well executed RETRO bike, one that shows real style...

... a "Classy Dame"- and I dare say this one qualifies...
 
Thanks guys, just waiting for it to warm up to do the coating.
We soaked and shook the heck out of the inside with a bunch or acetone and gravel in it yesterday.

I put the 2 packets of Caswell epoxy into 2 same size jars, the mix is a 2:1.
I marked the jars at full and then measured to make marks for 2/3 and 1/3 mix per bottle.
That will leave me a 1/3rd of the mix for a second coat.

caswellEpoxy.jpg


The suns a shining nice today, come ~80F the big test (crosses fingers).
 
Back
Top