Adding 5 more gallons to your gas supply.

Nighthawk · 03-03-2008, 12:18 PM

Before our first Iron Butt ride last year I had a great idea. What would it take to add 5 more gallons to the BMW without setting a beer keg on the back seat. Having a brother who works sheet metal and such, I asked him to weld up two 2.5 tanks that would fit inside of my hard saddle bags. The right side tank has the filler neck and the main feed on the bottom left. Went to the auto parts store and picked up a small electric fuel pump. From the fuel pump it goes to the fuel by-pass line which goes into the tank. After all the hoses were in place time for a test. I put gas in the tanks and hit the switch located in the AUX position in the dash. It Works.

During the Iron Butt ride my dad riding a ST1300 had a 7 ish gallon tank and was very proud of not needing gas every 125 miles, like someone on a LITTLE 636

Now having a range of about 480 miles, I would show dad that at 375 I still had about 3 gallons or half a tank. It wasn't until the next stop did he find out about the hidden tanks in the saddle bags.

fpzx10 · 03-03-2008, 12:27 PM

Awesome

Cutty72 · 03-03-2008, 04:27 PM

So does it draw equally from the saddle bag tanks?
Otherwise it would throw off balance would it not?

Great idea tho... but I like stopping every 140 or so miles, for a streach at least.

Nighthawk · 03-03-2008, 04:34 PM

The feeder from the right tank to the left tank is 1/2" fuel line. Line to the tank from the left tank is 3/8". Going down the road you could never tell. It was cool riding down the road and watch your fuel gauge go up.

dReWpY · 03-03-2008, 04:37 PM

now im lucky to get 100mpt

Cutty72 · 03-03-2008, 05:34 PM

Quote:

Originally Posted by drewpy

now im lucky to get 100mpg

Don't you mean miles per tank???

or did you mean 10 mpg

Mr Lefty · 03-03-2008, 06:42 PM

I wished mine had a bit more range... I get 170ish in town... I'm hope'n to push that to 230ish on the trip down to Indy... I've thought about try'n something like this but it's beyond my skill

Phenix_Rider · 03-03-2008, 07:59 PM

I get 180-190 per tank. Fine with me. How's that extra slosh factor?

OneSickPsycho · 03-03-2008, 10:43 PM

Captain Morgan · 03-09-2008, 06:36 AM

Did you leave any room in there for carrying anything you needed? Are the tanks removable or are they completely welded in?

03-03-2008, 12:18 PM	#1
Nighthawk Red Sled Rider Join Date: Feb 2008 Location: Ohio Moto: BMW R1100RS Posts: 72	Adding 5 more gallons to your gas supply. Before our first Iron Butt ride last year I had a great idea. What would it take to add 5 more gallons to the BMW without setting a beer keg on the back seat. Having a brother who works sheet metal and such, I asked him to weld up two 2.5 tanks that would fit inside of my hard saddle bags. The right side tank has the filler neck and the main feed on the bottom left. Went to the auto parts store and picked up a small electric fuel pump. From the fuel pump it goes to the fuel by-pass line which goes into the tank. After all the hoses were in place time for a test. I put gas in the tanks and hit the switch located in the AUX position in the dash. It Works. During the Iron Butt ride my dad riding a ST1300 had a 7 ish gallon tank and was very proud of not needing gas every 125 miles, like someone on a LITTLE 636 Now having a range of about 480 miles, I would show dad that at 375 I still had about 3 gallons or half a tank. It wasn't until the next stop did he find out about the hidden tanks in the saddle bags. __________________ Maker of Drewpy

03-03-2008, 12:27 PM	#2
fpzx10 Rides a Crotch Scooter Join Date: Feb 2008 Location: shitville Moto: 2007 GSXR 750 Posts: 714	Awesome __________________

03-03-2008, 04:34 PM	#4
Nighthawk Red Sled Rider Join Date: Feb 2008 Location: Ohio Moto: BMW R1100RS Posts: 72	The feeder from the right tank to the left tank is 1/2" fuel line. Line to the tank from the left tank is 3/8". Going down the road you could never tell. It was cool riding down the road and watch your fuel gauge go up. __________________ Maker of Drewpy

03-03-2008, 06:42 PM	#7
Mr Lefty TWFix Legend Join Date: Feb 2008 Location: Denver CO Moto: 01 BMW F650GS Dakar Posts: 15,677	I wished mine had a bit more range... I get 170ish in town... I'm hope'n to push that to 230ish on the trip down to Indy... I've thought about try'n something like this but it's beyond my skill

03-03-2008, 07:59 PM	#8
Phenix_Rider WERA White Plate Join Date: Feb 2008 Location: Renton, WA Moto: Ninja 650R Posts: 1,920	I get 180-190 per tank. Fine with me. How's that extra slosh factor?

03-03-2008, 10:43 PM	#9
OneSickPsycho Ride Like an Asshole Join Date: Feb 2008 Moto: nothing... Posts: 11,254

03-09-2008, 06:36 AM	#10
Captain Morgan Let's do another U-turn Join Date: Feb 2008 Location: Indiana Moto: 2009 V-Strom Posts: 3,816	Did you leave any room in there for carrying anything you needed? Are the tanks removable or are they completely welded in?