| | | Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles | Another Fuel Tank variation Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. I have been watching the local craigslist for another bike for my next build. I have decided to build some ...  | | 
02-03-2009, 09:35 AM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2008 Location: Urbandale Ia
Posts: 497
| | Another Fuel Tank variation I have been watching the local craigslist for another bike for my next build. I have decided to build some parts while I search for the frame I want. Here is the fuel tank I made that I am going to mount under the seat. It holds a little over a quart. Its made from a piece of aluminum tubing with o-ring fitted end caps. Just something different. (It's been a long winter.)
John | 
02-03-2009, 10:03 AM
|  | MANIC Mechanic | | Join Date: Sep 2008 Location: Clearwater, FL
Posts: 1,122
| | Re: Another Fuel Tank variation John,
NICE!!!
That's exactly what I have planned for the Spoilers. There's no room up front for a tank on the spoilers without ruining the look of the bike. I did see one Spoiler that had an 883 Harley tank. It looked pretty good, but I still think a small cylinder is the way to go.
Last summer I bought a bunch of odds and ends material from a shop that was closing. As luck would have it, there was a bunch of different size Aluminum tubing in the mix.
Jim | 
02-03-2009, 11:42 AM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2008 Location: Urbandale Ia
Posts: 497
| | Re: Another Fuel Tank variation [quote=Creative Engineering;59320]John,
NICE!!!
That's exactly what I have planned for the Spoilers. There's no room up front for a tank on the spoilers without ruining the look of the bike. I did see one Spoiler that had an 883 Harley tank. It looked pretty good, but I still think a small cylinder is the way to go.
Last summer I bought a bunch of odds and ends material from a shop that was closing. As luck would have it, there was a bunch of different size Aluminum tubing in the mix.
Jim[/QUOTE
Yes, I got a bunch of scrap aluminum, and aluminum tubing from the last place I worked when it closed. It would probably be less work to just Tig. the end caps, instead of cutting the o-ring grooves and set screwing the caps, but I would have to run them over to a friend of mine, so I just do the extra work. I have plenty of time.
John | 
02-03-2009, 06:29 PM
|  | Moderator | | Join Date: Sep 2008 Location: Littleton, Colorado
Posts: 1,908
| | Re: Another Fuel Tank variation John,
Love it. Are you still going to run the kit tank and use this as auxiliary fuel. Just 'T' into the fuel line?
That's cool. Think I'll build one. Where I work we have some thin wall stainless pipe laying around. Some 3" diameter stuff that would be just about right. Thanks for the idea.
Tom
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Last edited by 2door : 02-03-2009 at 06:31 PM.
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02-03-2009, 07:55 PM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2008 Location: Urbandale Ia
Posts: 497
| | Re: Another Fuel Tank variation Quote:
Originally Posted by 2door John,
Love it. Are you still going to run the kit tank and use this as auxiliary fuel. Just 'T' into the fuel line?
That's cool. Think I'll build one. Where I work we have some thin wall stainless pipe laying around. Some 3" diameter stuff that would be just about right. Thanks for the idea.
Tom | No Tom, I am just going to tuck it under the back of the seat. It wont be very noticable since it is only about the same width as the seat. It is 3" I.D. tubing and a quart of gas is enough for me, I don't take any real long rides. The next bike I am planning on building wouldn't look very good with the stock tank on the top frame tube so that is where it is going.
John | 
02-03-2009, 07:58 PM
|  | Motorized Bicycle Elite Member | | Join Date: Sep 2008 Location: Vancouver Island BC .Canada
Posts: 191
| | Re: Another Fuel Tank variation Just a thought
A person could rework one of those disposable propane tanks into aux. tank and it is built really well...Hummmmm Recycle anyone...POPS | 
02-03-2009, 08:24 PM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2008 Location: Urbandale Ia
Posts: 497
| | Re: Another Fuel Tank variation Quote:
Originally Posted by POPS Just a thought
A person could rework one of those disposable propane tanks into aux. tank and it is built really well...Hummmmm Recycle anyone...POPS |
Funny you would mention that. I was thinking about one of those small propane cylinders. I couldn't get the nerve to drill a hole in it, thought it might blow up? That could ruin your day!
John | 
02-03-2009, 08:44 PM
|  | Motorized Bicycle Elite Member | | Join Date: Sep 2008 Location: Vancouver Island BC .Canada
Posts: 191
| | Re: Another Fuel Tank variation Quote:
Originally Posted by Retmachinist Funny you would mention that. I was thinking about one of those small propane cylinders. I couldn't get the nerve to drill a hole in it, thought it might blow up? That could ruin your day!
John | John
I have a lot of experance with auto propane. Even when the tank seems empty there is a lot of pressure in it . It can be bled off with care. On the small bottle I would put it in a vice And make shure you are covered up good like your welding.Use a pointed probe like a test light and try pushing on the little preasure valve or try pulling up on it. another thought is to push the probe into the hookup valve to slowly bleed it. DONT SMOKE and only well vented space,GLOVES and facemask. It will NOT blow up. All you have to do is watch out for is propane burn on exposed skin.Make shure you do this to an empty tank only...POPS | 
02-03-2009, 09:10 PM
|  | Motorized Bicycle Elite Member | | Join Date: Sep 2008 Location: Vancouver Island BC .Canada
Posts: 191
| | Re: Another Fuel Tank variation DO NOT DRILL IT until your are shure you have bled it off. After it's bled I would force the rubber seal into the tank and than fill with water than drill away...POPS | 
02-03-2009, 11:34 PM
|  | Motorized Bicycle Elite Member | | Join Date: Sep 2008 Location: Vancouver Island BC .Canada
Posts: 191
| | Re: Another Fuel Tank variation Update
I went outside and found 1 of those small tanks. Where the feed for the propane is it has a valve like a tire stem. All you have to do is wear a face shield and gloves and slowly push down on the stem.You will hear the remaining air/gas escape. When it has stopped hold it down and fill with water threw the same hole for safety. Trikkle it in until full and than drill/ cut away. I just tried it and it works.....POPS | | Thread Tools | | | | Display Modes | Linear Mode |
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