2012 Butt Lite 6IX

[tommymac]

Originally Posted by Trip

I'd need an ADV model if I get into this shit. LOL 170-210 per tank is not enough. Too much wasted time in the pits.

I was reading the rule sin th evoid and with fuel cells etc max you can carry is 11 gallons of gas. With hwy riding the aprilia gets about 200 per tank anyway.

[derf]

Originally Posted by Trip

I'd need an ADV model if I get into this shit. LOL 170-210 per tank is not enough. Too much wasted time in the pits.

http://www.sampson-sporttouring.com/fuel-cells.html

[Trip]

Originally Posted by derf

http://www.beastintheeast.org/2011/sked.htm

I think you missed the registration already but next year....

Yeah, that one looks perfect length if they do it next year.

Originally Posted by tommymac

I was reading the rule sin th evoid and with fuel cells etc max you can carry is 11 gallons of gas. With hwy riding the aprilia gets about 200 per tank anyway.

Originally Posted by derf

http://www.sampson-sporttouring.com/fuel-cells.html

I would probably just go with a bigger aftermarket tank. Only use it for shit like this and put back the OEM when I am not needing it.

[derf]

While I understand the need for an aux fuel cell for stuff like this, my gas tank now outlasts my bladder anyway and a gas station is a good place to stop, pee and go.

Even a 5 gal plastic fuel cell would work

http://www.summitracing.com/parts/BOB-10992/

just need to hard mount it

[Trip]

I started getting pissed off on my trip. Even with my constant supply of water from my camelbak, I could of did around 300 miles without stopping for a lot of spots. Having that amount of gas would of made me worry less about some of my routes too.

[Trip]

ouch, the touratech version is $1600

http://www.touratech-usa.com/Store/1...4-2gal-2005-07

[derf]

Originally Posted by Trip

ouch, the touratech version is $1600

http://www.touratech-usa.com/Store/1...4-2gal-2005-07

There are a few hard mount examples, but they almost all replace the rear seat. I figure its OK because you prolly wont have a passeneger on a long trip like this

http://www.r1200gs.info/howto/auxcell.html
http://www.ecclespike.org.uk/auxtank.html

[tommymac]

Not sure whats out there for the futura, and I dont know if they would allow the ones on the rear set since it looks like theyre strapped down vs bolted down

[Trip]

Originally Posted by derf

There are a few hard mount examples, but they almost all replace the rear seat. I figure its OK because you prolly wont have a passeneger on a long trip like this

http://www.r1200gs.info/howto/auxcell.html
http://www.ecclespike.org.uk/auxtank.html

most of the big events have rules against the ones you suggest.

[derf]

No they allow the ones I suggested as long as they are hard mounted. The steel or aluminium straps they sell that work with these are good.


from the 2007 rule book

2. Auxiliary fuel:
Note that the Iron Butt Rally does not encourage the use of auxiliary fuel systems. The rally has been laid out with fueling provisions in mind. However, carrying additional fuel does allow a rider the ability to travel more miles between stops, which obviously leads to a competitive advantage for riders so equipped.
Fuel capacity may be measured at any time as deemed necessary by the rallymaster. However, capacity inspection is usually made prior to the start of the rally or immediately after the rally concludes. All motorcycles that finish the rally may be impounded immediately after the rider checks in at the final checkpoint. They may not be removed from the impoundment area without the written permission of the rallymaster.

3. Inquiries regarding auxiliary fuel may be directed to the following firms who have provided systems that met inspection standards for the rally in the past:
Champion Industries: 903-566-6001
JAZ Products: 805-525-8800
Summit Racing Equipment: 800-230-3030
Tulsa Enterprises: 731-967-3574 or 888-824-6566
Harwood Industries: 903-566-6001
Other manufacturer's cells may also be acceptable. Please contact us.

and

Appendix A: Fuel system capacity and auxiliary tanks

I. Fuel System Capacity

Fuel system capacity for motorcycles using liquid fuel will be determined by the method specified below. For motorcycles that do not use liquid fuel, the capacity shall be determined on a case-by-case basis to ensure that the “gasoline-equivalent” fuel capacity of the motorcycle does not exceed 11.5 gallons (on an energy basis).

1. Original Equipment Tanks
For original equipment (OE) tanks, the manufacturer's specified capacity shall be used unless the IBR has published alternative specifications 30 days in advance of the event. In the case of conflicting manufacturer's specifications, and in the absence of an alternative specification published by the IBR, the highest capacity published by the manufacturer shall be used. For example, in the case of the BMW R1100RT, the highest capacity specified by the manufacturer is 7.26 U.S. gallons, which our measurements confirm is the correct capacity.

2. Modified Tanks, After-Market Tanks, and Auxiliary Fuel Systems
The capacity of all non-OE elements of a fuel system shall be determined by the amount of water or fuel required to fill and empty system (including lines, pumps, filters, etc.). Water may be used to measure individual tanks or whole systems. However, we will usually use premium grade gasoline unless the motorcycle is designed to run on an alternative fuel (e.g., Diesel fuel). For systems equipped with a fill pipe that extends into a vapor space, the capacity will be determined by filling the system to the bottom of the fill pipe, unless the system has been modified in some manner to permit a fill rate in excess of 1.0 gallons per minute above the bottom of the fill pipe.
The volume of liquid required to fill the system will be calculated based on the weight of the liquid required to fill the tank and the density of that liquid. For example, using gasoline with a density of 6.180 pounds per gallon, if the weight of gasoline required to fill the system is 30.90 pounds, the capacity of the system is 5.00 gallons (30.90/6.180). The weight of liquid required to fill the system shall be determined by one or more measurements of containers before and after their contents have been poured into the fuel system. The containers shall contain at least 3.0 gallons during the "before" measurement. The contents shall be poured into the fuel system until the container is empty or until the fuel system is full, whichever occurs first. The temperature of the liquid poured into the system shall be kept as close as possible to the temperature used to determine the density of the liquid, as described below. When gasoline is used, it must be from the same batch of gasoline used to determine fuel density. The scale used to measure the weight of liquid dispensed shall be repeatable to 0.01 pounds and calibrated with an NIST-traceable dead weight.

Determining the Density of Water:
For water at 60oF, the density shall be assumed to be 8.337 pounds per gallon. At 70oF, the density shall be assumed to be 8.328 lbs/gallon. For other temperatures, the density of water shall be determined from standard engineering tables or using the following formula:

lbs/gal = 8.3286 + (0.000985*T) - (0.000014*T2), where T is the temperature in degrees Fahrenheit.

Determining Fuel Density:
The density of the fuel shall be determined by the weight of fuel required to fill a rigid, narrow neck "calibration vessel" of known volume in excess of 1.5 gallons. The volume of the "calibration vessel" shall be determined by measuring the weight and temperature of water required to fill the vessel. The temperature of the water used to calibrate the "calibration vessel" shall be measured with a thermometer accurate to two degrees Fahrenheit (F) and shall be within the range of 39oF to 100oF. The density of the water shall be determined as specified above.
As an example of using this approach, if the temperature of the water is 70oF and the weight of water needed to fill the calibration vessel is 14.58 pounds, then the volume of the calibration vessel is 1.751 gallons (14.58/8.328). If the weight of gasoline required to fill the calibration vessel is 10.82 pounds, then the density of the gasoline is 6.179 lbs/gallon (10.82/1.751).
Alternatively, the density of the fuel may be determined using a precision hydrometer with a resolution of 0.001 specific gravity or less. As an example of using this approach, if the specific gravity of the gasoline measured by the hydrometer is 0.742, then the density of the gasoline is 6.186 lbs/gallon (0.742 * 8.337). (Note that the hydrometer will determine the specific gravity of the gasoline relative to water at 60F. The temperature of the gasoline does not have to be at 60F, but the temperature of the gasoline used to fill the tank must be equal to the temperature at which the specific gravity of the gasoline was measured.)


II. Auxiliary Fuel Tanks

1. Expansion of the stock (OEM) fuel tank is permitted, provided that such expansion is of similar material, gauge, and construction as that of the stock fuel tank.

2. Non-OEM main fuel tanks and auxiliary tanks are permitted if they are NASCAR-, IHRA-, or NHRA- approved or, at the sole discretion of the rallymaster, determined to be of acceptable quality.

3. Any auxiliary tank(s) shall be mounted in a secure manner so as to minimize the chance of its becoming separated from the motorcycle. Approval of attachment systems rests at the sole discretion of the rallymaster.

4. All fuel lines must be routed so as not to interfere with the operation of the motorcycle.

5. An electric fuel pump, if used, must be properly wired and fused, and the refueling inlet of the auxiliary tank must be grounded.

6. The auxiliary tank(s) must be properly vented for pressure buildup and overflow.

7. Anti-slosh foam or anti-slosh baffles will be required for cells mounted on the pillion seat or the rear rack of the bike unless the maximum volume of the tank does not exceed 1.0 gallon. A minimum of 80% of the dry capacity of the auxiliary tank must be filled with anti-slosh foam, or the tank must be equipped with one or more longitudinally-placed baffles that are at least 80% of the height of the tank and that divide the tank into two or more chambers of approximately equal volume. The rallymaster may approve alternative configurations that are determined to provide effective control of sloshing. Taildragger cells, cells no higher than the top of the OEM tank, and enlarged fuel tanks in the OEM tank location (i.e.: Touratech tanks) are exempt from this requirement.

8. Fuel may not be carried in excess of the quantities set forth in this section, or in containers not complying with the above standards, unless expressly approved in advance by the rallymaster.