This is the best
two stroke motor Honda has ever produced. The acceleration of this
bike is absolutely unbelievable and yet the powerband is very
linear. The power feels like there is no end to it. It
just pulls and pulls. It is like controlled violence. Under
acceleration the front wheel is always about a foot off the
ground and wheel spin is minimal. It is hard to imagine
not getting the holeshot with this bike regardless of how poorly
you timed the gate. Off the bottom there is no hesitation
whatsoever, the throttle response is instant. The motor has no
short comings at all. Everything feels perfect. Riders had their
choice of different pipes for different powerbands.
Pistons are a special HRC parts with two rings that are very
thin to reduce friction. Tolerances are kept very tight. The
crankshaft can be tuned by changing the weights in it to
alter the inertia (see works parts). Due to the extremely linear
powerband, the bike uses a hand machined four speed gearbox. The
gears themselves are massive and need to be to handle the
tremendous load. There is so much power at hand that you can
start this bike in third gear without slipping the clutch! The
clutch basket is surprisingly out of a production bike. It was
replaced every race. A decompressor is added to the side of the cylinder for aid
The decompressor is covered by a magnesium cover and is operated
by the lever above the clutch lever. Titanium bolts with
dished out heads are used at the lever perches. Eric used stock
Honda grips glued and safety wired. This would probably be the
last bike that you would want the grips to come loose on!
The air box is a production item with added holes to help the
motor breath better.
A massive set of
three core radiators are used to compensate for the heat
generated by all the extra the horsepower this bike puts out.
Temperatures were constantly monitored by the use of heat tape
as shown in the photos.
NT7 is the code
for the works 250 and the RC500 shares the same coil as seen in
the photo above.