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Old 10-27-2012, 07:56 AM   #90
FastFreddy's Avatar
Join Date: Aug 2008
Posts: 755
Cool specs

Originally Posted by LeeD View Post
Well, you could save yourself from some loops by going with a less aggressive rear tire, a slower than normal turn throttle, or a heavier flywheel, that is usually after you tried everything you know to tame the beast.
Wonder what the wheelbase is, and swingarm length, compared to standard 4 stroke CR-500's. I know some pros spec longer wheelbase on their bikes, especially outdoor bikes, for stability and to tame the power.
I was never a fan of huge horsepower, even in 125 Expert, as wheelspin and traction offset the gain in pure HP. Even in starts, you still need traction besides pure horses. I hole shot a few VetExperts with a 125, and several with 250's, against the 500's of various makers in the class.
OTOH, I"ve never ridden anything more powerful than the 4 stroke YZ-
The stock wheelbase for the 1985 cr 500 was 59.1 this bike is 58.6. It's built off a alm 250 frame.

500AF 2012 Specifications


Engine Type 500cc liquid cooled single cylinder two stroke

Bore and Stroke 89mm X 79mm

Compression Ratio 6.8:1

Induction Eight pedal reed valve

Carburetion 39mm flat-slide


Transmission Close-ratio five-speed

Final Drive #520 chain; 14T/48T


Front Suspension 48mm inverted Showa cartridge fork with rebound compression damping djustability; 12.2 inches of travel

Rear Suspension Pro-LinkŪ Showa single shock with spring preload, rebound-damping adjustability, and compression-damping adjustment separated into low speed and high speed positions; 12.5 inches travel.

Front Brake Single 240mm disc with twin-piston caliper

Rear Brake Single 240mm disc

Front Tire: Dunlop 742 FA 80/100-21

Rear Tire: Dunlop 756 100/90-19


Rake 27.2 degrees

Trail 117 mm

Wheelbase 58.6 inches

Seat Height 37.6 inches

Ground Clearance 12.8 inches

Dry Weight 213.8 pounds

Fuel Capacity 1.5 gallons

So what do u think?

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