I'm in the middle of designing and figuring out my custom tank. I'm trying to figure out what to do for filler neck and cap. What are some ways you guys have solved this? One option is to buy another kit tank to cut the stock filler neck.
For those with custom tanks...
- Thread starter flatblack
- Start date
I got mine at Speedway also. No problems either. Does your bike frame actually set that way? The petcock will work there if it does set like that. If it sets like a normal bike you have the petcock in the wrong end. Just curious.
Terry
Terry
No. This was just a quick Illustrator mock up from a tracing of the frame I did. I would like the petcock towards the rear, but once the tank is built and put in the roller, I can figure out the best/lowest location.
I also just found this bung/cap on ebay:
Aluminum Fuel Tank Filler Neck Weld Bung & Chromed Cap | eBay
I also just found this bung/cap on ebay:
Aluminum Fuel Tank Filler Neck Weld Bung & Chromed Cap | eBay
You are going to want to put the filler and petcock on the same side of the tank so you can fit it through the frame. That was a time consuming mistake I made.
Same eBaY seller has an assortment of filler necks also in steel. Even has a volume discount on a lot of 10. coyote-gear-fillers-caps | eBay
I found some pipe, tapped a thread on it. And bought a brass endcap from a plumbing suppliers. Total cost around $5. IMO the endcap looks very vintage and as good, if not better then some of the caps ive seen for ten times that amount.....
You could make the tank out of aluminum and use the butt end of a maglite. maglite has an endcap with an o ring seal.
Harry, how did you vent your cap? Guess a small hole in the top would do it.
Love the look and it's a smaller diameter, which is good for my design.
Love the look and it's a smaller diameter, which is good for my design.
I used to use a 3/4" copper plumbing threaded male end soldered into the tank along with a brass hose cap. Now I prefer using a brass hose coupler, grind down the threads on the lower portion, solder it into the tank and use the brass hose cap. Drill a small hole in the cap for venting the tank and you're good to go for around eight bucks. I like brass. Looks good.
SB
SB
The rubber o-ring might give a bit of trouble. That rubber isn't fuel resistant. But they might make some someplace that are. Or maybe a fuel-proof gasket the same size.
I am assuming you are making a metal tank but just in case you are building a fiberglass tank you will want to use a sealer other than Kreem. It is MEK based and will more often than not destroy a glass tank. There is a product made by Caswell which cost a little more than the Kreem but leaves a thicker coating and is safe for fiberglass. Best of luck with your build!!
1" 7/8" Nut and Bolt with O-ring from Hardware store. They are gas resistant. Had it over a year and it is as good as new. I drilled a hole down the center and soldered in a coiled copper line for a breather. Works great.
Yeah, there's a pic of the mag lite cap somewhere on one of these boards. Look around, you might find a knockoff for just a few bucks..