I'm building a full-suspension XC bike for racing technical courses. My frame is built with a leverage ratio such that 45mm of shock stroke corresponds to 130mm of rear travel. 99% of the time, I am interested only in using the first 115mm of rear travel, and will be running a 120mm travel fork up front.
I have been considering two scenarios:
- Run a 40mm stroke shock to limit rear travel to 115mm travel.
- Run a 45mm stroke shock with higher pressure to limit effective rear travel most of the time to about 115mm, but with 15 extra mm of travel for big bumps.
I guess I'm not entirely clear on the disadvantages of running a longer stroke shock at higher pressure, if there are any.
- Would small bump sensitivity be similar across setups #1 and #2?
- Is he concept of "effective rear travel" (accessible travel under 99% of conditions) relevant, supposing I've carefully tuned my shock pressure?
- Is there a kinematic advantage to running a longer stroke shock?
Thanks in advance for your thoughtful technical insights.