|FAQ of Valkyrie Belly Tank
Q: Can you bypass the pump if it quits on the road?
A: Yes! In case of fuel pump failure: First turn petcock to off postition. Using the pair
of pliers that are in your tool kit, we disconnect oem carb hose from the fuel filter and
reconnect it to the petcock. Using the fuel filter reconnect both hoses from the belly tank
to prevent any fuel lose. You now have by passed the belly tank and continue running off
what is left in the main tank/reserve on a manual petcock.
Q: The tank is built with 5052 Aluminum. What does that mean?
A: 5052 Aluminum (per Ryerson Steel Supply): Tensile strength range is 31,000 to
44,000 psi. Very good corrosion resistance, good workability, weldability, and strength.
Used for Aircraft fuel tanks.
Q: How does it flow fuel?
A: The Belly Tank is supplied by a 1/2" line from the bung (next to the petcock) in the
main tank. Air exits from the belly tank into the main tank via the petcock. Fuel is
always being supplied to the engine from belly tank. When main tank & belly tank run
out of fuel, switch petcock to reserve and the last gallon will drain to the belly tank for
use. So, as you use your fuel your CG ultimately is lowered as the fuel moves from your
main tank to your belly tank.
Q: How much lower than engine does the Belly Tank hang?
A: Center of Belly Tank is 1" below engine. Ground clearance of the tank is the same
as the kickstand bracket.
Q: Is the fuel tank too close to the exhaust?
A: The exhaust has minimal heat at an idle when you speed up there is enough air flow
going by the exhaust and tank to not create a safety issue. I have tested this on an
extremely hot day in eastern Washington with no fuel in the tank and running hard. I
stopped along the way to check it and found no heat transfer at all. With fuel in the
tank, it dissipates any heat that would build up. There is approximately 1” clearance in
one corner of tank on the stock exhaust.
Q: What if I hit something big in the road?
A: Tank has good structural design & quite strong and protected by the exhaust frame,
motor and rear wheel. The belly tank hangs only 1” lower than the engine in the center;
this in most cases is not an issue. If you hit something big enough in the road to hit the
tank, your biggest concern will not be the fuel tank because you will have launched or
will be on your side. You might want to call NASA and report a Valkyrie launching.
Q: Will this tank work with a center stand?
A: It will not work with any center stands that we know of.
Q: What skill level is required to install this tank?
A: A person with normal mechanical ability and with a motorcycle lift and tools is
capable of doing all but the silver soldering (brazing not low temperature soldering). The
silver soldering needs to be done by someone qualified to purge & weld fuel tanks.
Q: How long does it take to install?
A: First time installer may take up to 3 hours including silver soldering bung into main
tank. Once experienced 2 hours is a good estimate for installation.
Q: Where can I take my tank to have the bung silver soldered in?
A: Most any welding shop, maybe a bicycle shop, an air conditioning shop and radiator
shop are some examples.
Q: Can I use a jack with the Belly Tank?
A: Yes!! See the Information page with a link to using a jack with Belly tank.