Hi can any one help I have an evil calling with a ohlins trunnion mount rear shock it is a 185x55 I have managed to get 63mm stroke on at 708lbs compression (it is the strongest spring ohlins do that will fit ) but still at 32% sag and bottoms out too easily think i need about 730lbs but I can't seem to find one does anyone know if any company can make a spring to fit my bike and compression please don't say ti springs I have had dealings with that company and would not touch them with a barge pole thanks
Hi thanks for the reply I can only ride it in the middle setting as in the full open mode it's too bouncy I have tried over the months altering the rebound and the low speed compression but it's still bottoming out on only smallish drops even the sag meter on the evil says it's running over 30% same as when I move up the bump stop and measure it that way
Looking at the leverage ratio: http://linkagedesign.blogspot.com/2018/01/evil-calling-275-2018.html
It starts off very progressive, and then levels out to more linear around the sag point.
This is why its using all the travel easily.
I guess the options are:
Live with it. Add more compression damping Fit a progressive spring like: https://mrpbike.com/products/enduro-progressive-coil-springs Try and find a firmer spring, although I would of thought that going too high in spring rate would start to kill of small bump and mean you'd need loads of rebound damping. Fit an air shock
Iam 6ft 5 and weigh 110kg took an air shock off the bike changed to the coil which better suited my riding style if iam riding trails the coil is far superior to the air shock
A 730 lb/in spring is only 3% stiffer than a 708 lb/in spring. 3% isn't going to solve your problem if it's "bottoming out on only smallish drops".
30% - 35% sag isn't unreasonable on an Evil. You need more high-speed compression damping.
And if it feels "too bouncy", probably more low-speed compression damping, too. Maybe more rebound damping.
I'm guessing your current shock is a "Medium - Medium" tune, meaning medium compression and medium rebound. Try a "High - High", then revisit the spring issue if necessary.