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520 CHAIN&SPROCKETS

Weight, then rotational...all the physics. Instead of the 525 or 530 with it's heavier weigt and strength you give up the strength for less weight...but you can stretch and even break a 520. Chains like on the Harley and clones are now being replaced with Belt drives. You get less Chain slap when there is slack in a chain, so if you are running a heavy chain and you let off, and ther eis some serious slack in in then there is some SLAP to it which you can feel...even with a 520 if it's not set right. In the real old days...never-mind..you'd have to talk to "Uncle Bob", (This should get him laughing), Even car engines have internal timing belts that are now not chains. The first Honda car that I ever saw in the US had a chain drive from the engine to the rear end...I saw the car in Oahu, Hawaii on Hickam Air Force base in 1973, and I don't remember the year of the car.
Now if we could only get some narrow light-weight seriously strong, non-slipping belts on our Kawasaki's....
 
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