Center Shock Spring on LE/RR Shock

[CTGT2005]

I've read a bunch of posts on switching the center spring out on the LTX Center shock, but they all seem to relate to the SE shock that has one coil spring and non reservoir.

I'm swapping the SE skid shocks to the LE QS3 model and want to put a spring on there that doesn't use a crossover ring. The main reason is to avoid scratching the kashima off the shock body (handling and ride quality would be nice also). Sounds like the 1704-736 is the spring everyone uses, but doesn't work on the reservoir shocks.

Can someone recommend what single coil progressive spring works well for this setup if there is one? I'm about 180lbs and aggressive trail rider.

 

[tsiceman]

Many of us have switched to straight 160lb spring, available from cannondale on ty.

 

[Rtbo]

That’s where I got mine, big difference over stock.

 

[ryama]

That’s where I got mine, big difference over stock.

Where are you setting this spring at?

 

[Rtbo]

Funny you should ask, I just took it out to send to cannondale27 and with it on the bench it was 11-12 turns right from when the spring hit the retainer. But I weigh 310

 

[Rtbo]

I think I remember most were 3-5 turns with it in the sled

 

[CTGT2005]

Thanks guys. To my surprise I already have a Hyperco 165lb 1-7/8 spring off some 36mm Elkas that I was playing with spring rates on my Sportsman ATV.

That should be fairly close, I modeled it out, should be slightly softer finish rate by 3.5" compression than the factory 170 & 250lb dual spring setup, but initialy to about 1.5" of compression it will be stiffer.

As for the QS3 selector on these track shocks, are they pretty much spot-on out of the box for high and low compression or is it worthwhile to send them to Carver for a Dual speed adjuster upgrade? I know on the front QS3s I put on last season, when I switched from level 1 to level 2, to control bottoming, trail chatter became a little harsh.