Ohlins electronic shock question?

[BIG BLACK WARRIOR]

I have a ohlins electronic rear shock, model #YA678. It is made for the Rage. I was changing to a heavier spring, and was looking in the Owners manual for a good starting point for the Sring pre-Load. However the Owners manual does not give you this information. It tells you how important it is to have the correct spring pre load, and if it is not right then the other adjustments(compression & rebound) will not work right. I can not find this information anywheres, even on the Ohlins web site. Does antbody know what the Spring load setting should be. I think it is about 10 1/2" from top of the spring to bottom, but I am not sure. Thanks.

 

[Port-Parts]

BBW - The main thing when setting the preload on that shock is to get the proper sag when sitting on it. Basically what you need to do is measure the length of the spring when installed with no weight on it and then measure the length of the spring with you sitting on it in full gear (helps to have two people to do this). The difference between those two measurements should be 45mm when you have the correct preload on the spring. If you have more than 45mm of sag you need to increase the preload on the shock until you get that measurement down to the 45mm. One thing to remember is that the recommended installed length of that spring is between 10.42-11.25". That is the springs optimal working range. If you get outside of that range to get your 45mm of sag you really should look at a different spring. If you have questions on this feel free to give me a call at 262-284-5995.

 

[BIG BLACK WARRIOR]

Kevin, Thanks for the reply. I should have asked you that question when I bought the spring from you at the Syracuse show, but I thought the information would have been in the owners manual.

 

[snowman 700]

To do it by yourself

BBW-

If you lift all the weight off the skid then move the rubber stop on the shock shaft next to the shock...Then set the track back to the ground softly ..then sit on the seat in you normal gear and do not bounce...You then lift the back again and measure how far the stop has moved you can get the sag. If the stop slides back to the shock body add a touch of grease hold it in place...like Kevin said it should be ~45mm.

Worked for me

Dave