126,875mph. Stock Production 1983 500XC

All Tar Speedweek, Mafikeng airport, South Africa. 15/10/2016.
1km sprint at 203 kph.

Any video avaliable ?

127 mph bravo I knew what speed feels like. I knew these bikes are fast.

I was on my '98 husky 250wr and launched it and went thru six gears pushing it. My drag race car ran in the 12 second 1/4 mile. The 250 had the same feeling time wise. I'd love to build a 430 or 390 wr/or and race it at the drags.

A Hundred Twenty Six thousand eight hundred seventy five MPH is movin for a 2 stroke

Video or it did'nt happen, lol

These bikes do 100mph with ease.

What size front sprocket 14t? Rear sprocket 52t?

rear looks 48 and a 15 or 16 on the front i bet.

Wth the wr/Xc tranny steeper gears would work. With the larger 500cc engine the top three gears should pull really hard.

I thought doing close to 100mph ok my te610e was quick. Your not hoping to hit a cross wind on the highway at that speed with a light bike. Cross winds grabbed me on my 1200 bandit. Not good.

I hope they wore full leathers on this 500.

pretty fast for a bike like that, I wonder what the 1/4 mile time is like??

Ditto on the leathers, but I've found things get more stable at speeds much over 100 and it takes a lot more effort to bend it over into a corner, even on a 230 lb. factory road race bike. (Unless, of course, you never mounted that steering damper...)
JT

I hit around 95 or so on my 85 500xc 14/50 sprockets. Clocked running side by side with a friends 13b twin turbo rotary buggy on an old fire road about 6 or so years ago. Still had more to go but backed off. Never need to do that again. Fun but scary as f**k. Funny part is it was more stable than my 15 te300 at 75 by far. I love how these bikes were built then. No stabilizer, no balanced wheels, no weird crap, just a machine that is ready to fly across the desert at whatever speed you wanna go. I give guys props for some of the ridiculous speeds that carried in events like Baja. No thanks. I'll stick to being a mountain goat!

14/48.

14/48 how did you keep the front wheel down when changing gears. So much torque from the 500cc.

Ah you seen the green blurr from the corner of your eyes on both sides of the trail. The trees and vegetation goes by really fast causing the green blurr.

you know you are travellin when the dotted white line becomes a solid line

Yup, doing 150mph on the 1200 bandit the cars in front of you are coming at you. Plus the red/blue lifghts are far behind you. I knew it was time to get off it. Everyday it was a challenge to ride to work. Some days it was 80mph, 85mph or 90mph was the average car speed. Once I get cutoff the defense mode kicks in. Twist it and color me gone.

14/48 is not exactly low gearing...

Hey were you ever able to find the ultimate lower end seal. You mentioned to me on testing you found the husky main seals were not the best for sealing

please let us know.

If this can be documented then it could make big news in the Vintage, and Modern Dirt Bike community. I'm of coarse comparing this to the Dirt Bike Magazine test done on the 1981 KTM 495 that did 124 MPH and has forever been know as the Worlds Fastest Dirt Bike. Google will quickly bring up all the details, both from back in the day and more recent accounts of what went down. Do to the story becoming popular a couple of years later they did the same test with a Water Cooled 495 and it couldn't get close to the speed of the AC one due to the Shrouds folding around backwards in the slipstream. This doomed all WC bikes to beat the record. This story of coarse has been a thorn in the side of the modern bike crowd, who wants to always think the latest bike must be the fastest.

I Couldn't agree more, Bill... Riding aggressively on pavement keeps the trouble out in front of you where you can see it aND adust to it. You don't want to know what happens when you let those cars/trucks run up your back side!
JT