I thought the chart below might be interesting to some. It is a dyno test of a 1978 YZ250 that was done back in 78, but my engine isn't much different so it's a reasonable comparison. The 78 put out 32 hp (corrected hp) at the rear wheel, and my bike is no more than around 36 with the Boyesen ports added. The 2000 Honda CR250 made a monsterous 46 hp at the rear wheel during one magazines test in 2000.
The YZ only made a lame 12 hp over the first 5000 rpm, after which it made 30 hp more over a 2000 rpm range. This light switch type power "curve" (which is actually a sudden power spike) is very similar to that of a full blown race built 1974 CR125, and this is exactly why my bike is so hard to ride. The 2000 Honda is a water col;ed, power valve engine, and it has a much smoother power delivery and much more power to deliver than mine does.
.................................................. ..........
Here is a dyno comparison of all of the top 2000 model 250 2 strokes which shows how ridiculously linear the power curves are on all of them. The Honda still made around 43 hp in this test, and all but one of them made over 20 hp at 5000 rpm where mine only makes around 12
, which is why they can easily out accelerate me when exiting most turns and go farther and faster over the jumps that are immediately after a turn, and is why I have to hang it all out on the straights and when entering the turns, which I can assure you is a little hairy to do (at least for me at my age) on any bike, especially on a 38 year old one.
.................................................. .........
Here's a dyno of a 1981 YZ465 and it has almost as much power as your Husky.
"Dynamometer figures line up nicely with seat-of-the-pants impressions. The YZ465G has the most horsepower of any production motocrosser that's been on the Webco dyno. The YZ develops a whopping 41.92 rear-wheel horsepower at 7000 rpm, and its torque peak occurs at 6000 rpm where it makes 34.51 pounds-feet. This compares to the YZ400F's maximum power figure of 36.90 and torque peak of 29.10 pounds-feet, at 7000 rpm and 6500 rpm respectively. The nearest thing to the 465 is the Can-Am 370 MX-5, which produced 39.74 horsepower at 7000 rpm and 30.77 pounds-feet torque at 6500 rpm.
Beyond the issue of maximum output is power spread. The 465 makes colossal horsepower from 5000 ( 27.54) to 8000 rpm ( 29.36) ; in 500-rpm steps, here's the rough topography of the 465's high mountain range: 27.5, 34, 39.5, 41, 42, 38.5, 29.5 horsepower. Want to talk about bulldozer torque? At 3500 rpm, there's 23 pounds-feet of torque on tap, and almost 27 at 7500 rpm. The 465 has so much power at any meaningful engine speed that you could just about put the YZ into third gear, toss the shift lever away and still race the bike without undue hardship."
.