Post by tkranzI have two good running ZRT triple triples. My 2002 is stock but well set
up and tops out at about 98 on a 30 degree day with radar. My 97 has reeds
and other mild trail mods. It topped out at 99.8 on the same day. Both
MIGHT just barely break 100 on a cold crisp day.
You have omitted the most important factor, affecting top speed.
Conditions.
In 1988, I had a 400CC Polaris (sometimes known as the "white
lightning"). That thing, under the right conditions, would top out at
about 95 MPH. The "right conditions" was on pure, smooth ice, with
just a skiff of snow, for slider lubrication. Put that thing into 6
inches of snow, and it would top out at about 50 MPH. It was geared
far too high, for the power to be effective, but it sure went fast,
when the conditions were right (about twice, in 3 years).
In contrast, I have a 2000 500 RMK, which tops out at about 90 MPH,
under the "right conditions". It also pulls about 80 MPH in 6 inches
of snow. The main difference is in the power, and the gearing. If I
geared the 500 RMK with the same ratio of power to track speed, as
that 400 was geared, I expect that it would pull about 130 MPH under
the "right conditions", but I would be VERY surprised if it would do
much more than about 60 MPH in 6 inches of snow. (for those who don't
know, a RMK is a mountain sled, and it is geared low, for power, not
speed, and has a deep lug, 136 inch, track on it).
Post by tkranzI agree with another poster that the Yamaha you mentioned is probably good
for about 95. Everyone thinks their sled is faster than it really is until
you meet Mr. Radar.
It doesn't help, that almost all speedos are calibrated to read faster
than reality.
Many people seem to think that gearing a sled up one tooth will make
it go faster. Probably true, under "perfect" conditions, but that
will, usually, slow it down, when it is norma.. uh "not perfect". I
have found, that gearing a sled down one tooth will, generally, not
affect top speed, but it will, in many cases, actually improve
performance when it is "not perfect".
Hope this helps...
--
Doug Bissett - doug.bissett!***@attglobal.net (remove the !SPAM part
to reply)
Polaris 2000 500RMK