Right, typically if i were to take a bike with a 200x50mm shock and substitute it with a 190x50mm, how much lower will the bb be and roughly how many degrees slacker will the h/a be? Or are there more factors here than i am aware?
Head angles/bb's and shock length 101
- Thread starter wysiwyg
- Start date
it would really depend on how much travel the bike has to start with. For example if you had 6" of travel (150mm) from a 50mm stroke the ratio is 3:1, shortening the shock by 10mm would result in a difference of approximately 30mm. Again it really depends on the geometry of the frame to start with in order to calculate the difference in HA.
I would be very careful fitting anything other than what the designer intended. By shortening the shock but not the stroke...
-you are asking the suspension linkage to move through an increased path which may hit the frame under full compression
- Could cause the suspension system to go over centre and not return correctly
You would probably get away with it if you could find a 190x40...?
I would be very careful fitting anything other than what the designer intended. By shortening the shock but not the stroke...
-you are asking the suspension linkage to move through an increased path which may hit the frame under full compression
- Could cause the suspension system to go over centre and not return correctly
You would probably get away with it if you could find a 190x40...?
I'll have to wait til its built up then to work things out.
I did that changing from a 222x70 to 215.5x63.5 (roco) to my versus trigger. It had a huge bb height like 15.5 inch and my goal was to lower it. It measured out to around 14.75 inch and the rear travel reduced from around 215 mm to around 180. I never did get a chance to measure the angels but I was extremely pleased with the outcome.