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| Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles |
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02-24-2009, 06:34 PM
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Motorized Bicycle Member
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Join Date: Jun 2008
Posts: 28
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stealth gas tank
anyone know where to buy a rear mount gas tank or have any design ideas on how to make a stealth one that isnt noticable to passer-bys?
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02-24-2009, 09:04 PM
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Motorized Bicycle Elite Member
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Join Date: Jan 2009
Location: Ohio
Posts: 130
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Re: stealth gas tank
Quote:
Originally Posted by Howitt
anyone know where to buy a rear mount gas tank or have any design ideas on how to make a stealth one that isnt noticable to passer-bys?
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You could always mount in backwords on a bicycle rack then make some type of cooler or something to disguise it lol. I would put mine back there anyways but i need it to carry stuff on the longer trips..
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-Nick
"Those who conform, lose all ideas"
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02-24-2009, 09:16 PM
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Motorized Bicycle Elite Member
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Join Date: Aug 2008
Location: nh
Posts: 419
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Re: stealth gas tank
i've seen someone on here make a tank thats small and round like a can that goes in a tight fitting black bag and sits just under the back of the seat. looks like a tool bag or something. not very noticeable at all.
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its only too fast if you cant stay on!
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02-24-2009, 09:44 PM
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Motorized Bicycle Elite Member
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Join Date: Jan 2009
Location: Ohio
Posts: 130
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Re: stealth gas tank
Your not going to be able to fit much gas under the back of your seat..
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-Nick
"Those who conform, lose all ideas"
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02-24-2009, 09:47 PM
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Motorized Bicycle Elite Member
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Join Date: Aug 2008
Location: nh
Posts: 419
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Re: stealth gas tank
nope. maybe get some type of tubing a run it under your top piece of frame frame? then wrap it with leather and paint it?
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its only too fast if you cant stay on!
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02-24-2009, 10:35 PM
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Motorized Bicycle Elite Member
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Join Date: Mar 2008
Location: Ontario
Posts: 550
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Re: stealth gas tank
Just mount the tank on a rear rack as high under the seat as possible. (Above the carb!)
Get a zippered lunch cooler big enough to fit your stock tank and punch a hole for the fuel shutoff valve to poke out. Mount tank in the opposite direction you normally would. I used a chunk of wood to mount the tank to the rack . The wood was under the hump of the tank, inside the bag so you could not see it. This allowed me to use the original mounting hardware that came with the tank. The studs poked out of the bottom of the lunch bag.The fuel line will come out right under your seat on the left side, inches away from your carb.
Everyone always asked me where my gas tank was!
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02-25-2009, 06:24 PM
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Motorized Bicycle Elite Member
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Join Date: Jan 2009
Location: Ohio
Posts: 130
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Re: stealth gas tank
Ha this has inspired me to do something like this also, but i am waiting for my new rack. Maybe have two gas tanks...
__________________
-Nick
"Those who conform, lose all ideas"
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02-25-2009, 06:39 PM
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Super Moderator
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Join Date: Sep 2008
Location: Littleton, Colorado
Posts: 6,754
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Re: stealth gas tank
Quote:
Originally Posted by ...ladies
Ha this has inspired me to do something like this also, but i am waiting for my new rack. Maybe have two gas tanks... 
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Hey, Ladies,
You could always have a jacket made from material that would hold gasoline. Just put the jacket on, fill it up and connect the fuel line... talk about stealth.
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Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"
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02-25-2009, 06:46 PM
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Motorized Bicycle Elite Member
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Join Date: Jan 2009
Location: Ohio
Posts: 130
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Re: stealth gas tank
Quote:
Originally Posted by 2door
Hey, Ladies,
You could always have a jacket made from material that would hold gasoline. Just put the jacket on, fill it up and connect the fuel line... talk about stealth.
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Haha my friends already think i smell like gas all the time, maybe a jacket with gas in it wouldn't be such a good idea  but... very stealth... I usually ride with a backpack.. maybe mount a tank in there?? and the ideas are flowing.. lol
__________________
-Nick
"Those who conform, lose all ideas"
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02-26-2009, 10:16 AM
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Motorized Bicycle Elite Member
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Join Date: Jun 2008
Location: Lancaster, PA / Newark, DE
Posts: 169
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Re: stealth gas tank
I use to have the china made rear rack gas tank. The only problem with it was the cap mounted flush with the top of the tank so under acceleration the gas sloshes to the back away from the fuel pet cock and then leaks through the cap. No matter what i couldnt get it to seal... Now the newer design from spooky tooth puts the cap at the front but it still mounts flush... & still leaks but under braking now, my friends got one. Since the fuel pet cock is at the front, when the tank is low on fuel it all sloshes to the back and the motor is starved for fuel. I ended up scrapping the entire kit except for the rack itself. I made a new gas tank out of 16 gauge sheet metal to mount under the rack out back. It is just a square box that holds 1.33 gallons. I used my old gas tanks short filler neck and made an extension out of pipe to bring the cap to about 3". I put a baffle inside to slow the fuel sloshing around (bigger than the one in the china made one...) and welded a bung on the front of the tank for the fuel petcock. I then welded a piece of pipe inside the tank to the bung and made it long enough to reach to the back of the tank. Basically when under accel all the gas will be pushed to the back and through the pipe and out the front of the tank. It works quite well and gets all but about a 1/2 cup of gas out of the tank. Obviously if you want it a little more stealth you could make my design smaller (closer to 1/2 gallon) and with a bag on top no one would see it  -Justin
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SOLD..50cc Morini S6-T 5.8hp,
44 tooth sprocket, Early 1990's Diamondback Frame, 26" WTB FX28 Wheels w/ Shimano XT Hubs,
Dellorto PHBG Race Edition 19mm Carburetor, 4 Valve Reed Intake (combined adds ~2hp),
Homemade Expansion Chamber, Homemade Steel Pack Muffler, Homemade 1.6 gallon Rear Gas Tanks
TOP SPEED: 54.0 MPH (not gps tested yet)
Last edited by europorsche914; 02-26-2009 at 12:56 PM.
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