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ManualManiac
01-07-2016, 12:42 PM
I have this idea for the bike im building. I plan on daily driving the thing however im also sold on a very very small penut moped tank. ( 1.4 gallons est)
Im using a 4cilinder kawasaki gpz engine, And have this idea to build a horseshoe type oil tank and use that as a reserve fuel tank. Hooking it up with a electric fuel pump that runs the gas from my lower tank to my upper tank with a petcock in between so it wont drop the gas from the upper into the lower when the pump is turned off.

I think it will work and who doest like sight gauges. Is there something im forgetting here?

Westboundbiker
01-08-2016, 7:15 AM
Yeah, there are a number of production bikes that do it. My '12 V Star has that same idea- however, they pull from the lower tank first, since it's fuel injected, they can do that. It means you only have to fill the upper tank, and you're good.

ManualManiac
01-10-2016, 12:37 PM
Yeah, there are a number of production bikes that do it. My '12 V Star has that same idea- however, they pull from the lower tank first, since it's fuel injected, they can do that. It means you only have to fill the upper tank, and you're good.

Great, il post an update when im done

DustyDave
01-10-2016, 1:19 PM
Probably wont happen on a Kawa but the cheap fuel plunger type pumps when used on a Sporty will pump from the vibration when you are really running hard. Then you think you have reserve .fuel but its already pumped up. It's a shame that I have to learn shit like that. Tried rubber mounting it with the same results, had to add a shutoff valve.
Dusty

hellbilly1932
01-10-2016, 4:31 PM
I have a set up like thhat. I run the front tank to reserve then flip the switch and pump the gas from my sissybar tank up to the main tank.

ManualManiac
01-11-2016, 3:09 AM
Probably wont happen on a Kawa but the cheap fuel plunger type pumps when used on a Sporty will pump from the vibration when you are really running hard. Then you think you have reserve .fuel but its already pumped up. It's a shame that I have to learn shit like that. Tried rubber mounting it with the same results, had to add a shutoff valve.
Dusty
mechanical or electric?

ManualManiac
01-11-2016, 3:10 AM
I have a set up like thhat. I run the front tank to reserve then flip the switch and pump the gas from my sissybar tank up to the main tank.
Got pictures?

hellbilly1932
01-12-2016, 1:10 AM
No detail shots.

66613

You can see my tank setup here. It started life as a 2 gallon Firestone air tank, I added the filler bung to one end and fabbed some brackets to fit the sissy bar.

Using one of these cheap pumps

http://m.lightinthebox.com/en/neje-12v-electric-diesel-petrol-fuel-pump_p2692830.html?currency=USD&litb_from=&adword_mt=&adword_ct=84187023794&adword_kw=&adword_pos=1o1&adword_pl=&adword_net=g&adword_tar=&adw_src_id=1810908567_301578074_21687104834_pla-78632005276&gclid=CJOC0aLmo8oCFVJufgodloQJjw

Mounted pump to bracket one of the lower case bolts, mounted a switch off the right side of frame under my seat and a second petcock to the right of the tank.

When I hit reserve o main tank I flip open second petcock and reach down and flip on the pump. I use clear fuel line so I can see when the transfer is basically done and shut down the pump. Takes about two minutes and I never have to stop. Also the whole system can come off in 10 minutes.

DustyDave
01-12-2016, 1:21 AM
mechanical or electric?

The cheap electric ones with a piston.
Dusty

ManualManiac
01-19-2016, 5:44 PM
No detail shots.

66613

You can see my tank setup here. It started life as a 2 gallon Firestone air tank, I added the filler bung to one end and fabbed some brackets to fit the sissy bar.

Using one of these cheap pumps

http://m.lightinthebox.com/en/neje-12v-electric-diesel-petrol-fuel-pump_p2692830.html?currency=USD&litb_from=&adword_mt=&adword_ct=84187023794&adword_kw=&adword_pos=1o1&adword_pl=&adword_net=g&adword_tar=&adw_src_id=1810908567_301578074_21687104834_pla-78632005276&gclid=CJOC0aLmo8oCFVJufgodloQJjw

Mounted pump to bracket one of the lower case bolts, mounted a switch off the right side of frame under my seat and a second petcock to the right of the tank.

When I hit reserve o main tank I flip open second petcock and reach down and flip on the pump. I use clear fuel line so I can see when the transfer is basically done and shut down the pump. Takes about two minutes and I never have to stop. Also the whole system can come off in 10 minutes.

That sounds great, sick set of wheels btw cb750?

ManualManiac
01-19-2016, 5:46 PM
The cheap electric ones with a piston.
Dusty

long walk home?

hellbilly1932
01-19-2016, 8:24 PM
That sounds great, sick set of wheels btw cb750?

Mostly cb750. Thanks.