Cheap and easy way to get more ride height

labikers said:

Has anybody tried this raise up kit? SSCustom says they dont have the fitment for the SCR950.They are playing safe I believe.

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eddie said:

I got to wondering about changing the ride height based upon the shock length or changing the mounting points.
What happens to belt tension?
It appears that the static tension prescribed by Yamaha is set unladen with the swingarm in a position slightly lower than a straight line drawn through the
countershaft pulley, swingarm pivot and rear axle center. With a rider on board, the swing arm moves toward level, increasing belt tension somewhat due to the farthest point of
the rear pulley moving away from the other two points (photo). Past level, the belt loosens ever so slightly. This cycles countless times on a ride.

If the bike height is raised with longer shocks or different mounts, the swingarm would have an even lower starting point and thus require the belt be tightened more to achieve the recommended tension.
That would also mean the amount of tension would increase more than before as the swingarm travels through the level position while riding, yes?
Belt tension is much more critical than chain tension in order to prevent ratcheting of the belt teeth on the pulleys.
A chain run slack simply wears the sprocket teeth more rapidly and generally doesn't slip.
Thoughts?

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Schu said:

eddie said:

I got to wondering about changing the ride height based upon the shock length or changing the mounting points.
What happens to belt tension?
It appears that the static tension prescribed by Yamaha is set unladen with the swingarm in a position slightly lower than a straight line drawn through the
countershaft pulley, swingarm pivot and rear axle center. With a rider on board, the swing arm moves toward level, increasing belt tension somewhat due to the farthest point of
the rear pulley moving away from the other two points (photo). Past level, the belt loosens ever so slightly. This cycles countless times on a ride.

If the bike height is raised with longer shocks or different mounts, the swingarm would have an even lower starting point and thus require the belt be tightened more to achieve the recommended tension.
That would also mean the amount of tension would increase more than before as the swingarm travels through the level position while riding, yes?
Belt tension is much more critical than chain tension in order to prevent ratcheting of the belt teeth on the pulleys.
A chain run slack simply wears the sprocket teeth more rapidly and generally doesn't slip.
Thoughts?

Click to expand...

You are correct. I believe repositioning the original shocks would be less detrimental than longer/extended travel of replacement shocks. Original shocks would maintain the same range of motion, but you will have changed the geometry as you explained so well. Probably less variation in center distance than if you swap shocks and increased your range of motion. I'm pretty sure Charles will give us his first hand experience on the effects of longer/extended travel replacements. You'd probably have to ride like this guy before you would really have any problems.

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