ASK THE MXPERTS: HOW MUCH HORSEPOWER? IT DEPENDS WHERE YOU MEASURE IT
Peak measures the highest horsepower, but often a pipe, piston, cam or mod makes larger gains, compared to the stock engine, at different parts of the powerband
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Peak measures the highest horsepower, but often a pipe, piston, cam or mod makes larger gains, compared to the stock engine, at different parts of the powerband
MXA preps for the 2021 450 Shootout, we dyno at Pro Circuit, ride new GasGas bikes and more
The in’s and out’s of a dyno and what they are used for
Perhaps in the future, scientists may find a more precise measurement of motorcycle power, but whether they choose kilowatts, cheval-vapeur or joules, it won’t matter if the public doesn’t go along
We dyno the 2018 models
Fast & faster
GEORGE LUTTIG FMF DIRECTOR OF R&D STARTING POINT: ?I had a shop, Luttig Performance, when Don Emler hired me to work on a couple of things, which turned into a couple more things. The next thing I knew, I was here all the time. The only period of my life I had a job outside of the motocross industry, I was a plumber, and I still did this kind of work on the side. I love being around the races, and I love the competitive aspect of building products for racing.? THE JOB: ?I oversee the creation of new…
The MXA wrecking crew spends the majority of its test time racing and riding brand-new production motorcycles, but early on in each test session every bike gets its day on the dyno. It really isn?t all that revealing because by the time its strapped down it has already been ridden to break in the engine, seat the muffler packing and get a feel for where it rates. Test riders form their opinions in the saddle and rely on the dyno numbers to reinforce what they already know. When the dyno numbers are spit…
Dear MXA, In your 2011 KTM 350SXF test you said, ?The KTM 250SXF makes 38.25 horsepower, the 350SXF makes 46.94 horsepower and the 450SXF makes 53.92 horsepower. Rounded off, there is an eight horsepower difference from the 250 to the 350 and from the 350 to the 450.? By my math that is a 6.98 horsepower difference between the 350SXF and 450SXF. Why did you round it off to eight horsepower? That is inaccurate. We can see why at first glance you would question our math. The reason we r…