To boost engine performance,
choose a fuel with a higher nitro
content. “Nitro” is nitromethane.
It acts as a catalyst with the fuel’s
methanol to increase its burn rate.
;e more nitromethane that is used
in the fuel blend, the faster the fuel
can burn, resulting in higher rpm.
;e big percentage number you see
on a bottle of fuel is its nitro content,
and for all-around use, 20% nitro
is the most popular choice. Race-oriented, high-nitro-content fuel
uses higher concentrations of
nitromethane—usually 30%. If you
do start using high-nitro fuel, you
should retune the engine to make
sure you aren’t running too hot. Once your tune feels
good, you will notice a power di;erence immediately;
however, you may not go noticeably faster because the
engine’s rpm hasn’t changed. But with more power, you
can go up a tooth on the clutch bell (or down a few teeth
on the spur gear) and that will increase peak speed.
Upgrading to a high-voltage battery pack is a no-brainer speed boost. If you are using a NiMH battery
pack with 6 cells, upgrading to a 7-cell or 8-cell pack will
give you more torque and more top end. LiPo packs most
commonly have 2 or 3 cells, and are labeled by cell count
(2S or 3S) and voltage ( 7.4V or 11.1V). (By the way, the
“S” stands for “series,” the term for how the batteries
are connected—another topic for another time.)
Before you run out and buy a high-voltage pack,
make sure that your speed control can handle the
Nitro content will be labeled on
the fuel bottle—here, it’s 30%.
Always use fresh fuel for peak performance.
;ese batteries appear identical, but look
closer—one is a 7.4-volt 2S pack; the other is
an 11.1-volt 3S pack.
voltage (refer to the manual, which will show the
voltage range), and also make sure that your chassis
can physically accommodate the new pack that you
BEFORE YOU RUN OUT AND BUY A HIGH-VOLTAGE PACK, MAKE SURE
THAT YOUR SPEED CONTROL CAN HANDLE THE VOLTAGE.
HO W TO 6 SPEED & POWER BOOSTERS