162,8 HK! Yamaha APEX 2011 Dyno test

Från Yamaha kom det en pressrelease. Där ett Dyno test från den amerikanska tidningen American Snowmobiler i USA visar att en begagnad Yamaha APEX (f.d RX-1) med en hel del mil på mätaren mätte hela 162,8 hästar!

Amerikanska Snowmobiler tidningen publicerade den 17 September 2010 den oberoende Dyno mätningen för den nya 2011 Yamaha Apex.

Pressrealease:

"The throttle has been pulled, the data has been captured, and now we know the number that many have been waiting to hear this fall, the independent dyno stats for the new 2011 Yamaha Apex.
In our early preseason dealings with the tech boys at Yamaha we were made to believe that this sled would only make 3-5 horsepower more than the 2010 RX-1.
Wow, were we duped!
No reason to be blue
While Yamaha is known worldwide as the Blue Team they don’t have any reason to be feeling down after Jim Czekala at Dynotech Research put the new Apex on his dyno.
Yamaha is known for being a conservative company and often under promises, but over delivers, and that’s the case here. The particular unit we dynoed was a demo sled used for consumer test rides in the northeast - supplied by Keith
Wood of Woody’s Performance in Topsham, Maine. The sled had about 1,700 miles on the odometer and we were told by Yamaha’s Marketing Manager Wade West that “at about 1,300 miles you can tell these sleds really wake up. The chassis
and track finally loosen up well and the driveline is done being broken in at this point.”
This Apex was more than ready to show well on
the dyno.


The final numbers showed the new Apex pulling
162.8 hp at 8,300 rpm. The exceptionally uniform and flat torque curve had a peak of 109.8 ft.-lbs. at 7,300 rpm. This sled is steady throughout its power band, even more so than other impressive 4-stroke snowmobile engines
we’ve seen from Yamaha.

Jim chimed in when we were discussing the results and said “It should be easy to clutch for
those aftermarket fellows looking to get a little
more performance as the 2-strokes only have a pimple of power in the power band and 4-
strokes are much better.”

For the brass at Yamaha this means that they
now have a 4-stroke snowmobile that can
compete with the big 2-stroke 800 twins from
Cat (800 H.O. EFI), Polaris (800 CFI) and Ski-
Doo (800R E-TEC) on power. The Yamaha Apex and Cat and Ski-Doo 800s have now all been independently dynoed to make roughly 163 horses while the Polaris 800 makes 143.2 ponies. (see graph)

This is good news for Yamaha guys and gals
debating on buying the expensive Apex as this
new, more powerful Apex engine may help them justify digging into their piggybanks to
their significant other!..."


Källa: Yamaha