[timms]

Hey fellow riders

I really enjoyed my first full suspension (titus motolite) last season, sufficient to say, the rp-23 was not to my liking and I have moved onto a coil over shock.

I have a 2007 specialized enduro set up with a 08 cane creek double barrel.

I can't ride the bike just yet, but I felt that the 2.5x500 steel spring that was on there was a bit much for me.

How much do you guys weigh? what springs do you use? type of riding?

I'm thinking of going titanium for the coil, and have read that CCDBs require coils with larger inside diameters..

does anyone have suggestions for CCDB compatible coils? are all coils created equally?

The original specs on the shock are somewhat odd, It has a 8.75 eye to eye but has a very long 2.5" stroke for only 150mm travel. The current coil is about 5.5" long. There is about .5" of threading outside the coil and about 1.5" inside (pics below)

Can I buy any coil that has a 2.5" stroke that is between 4.5" and 6"? of course it has to fit the inside diameter?

 

[Rob-Bob]

Check with diverse suspension products for your ti coil. I would call specialized and ask them what spring weight they recommend for your weight. Different bikes have different leverage ratios.

 

[dropadrop]

Just use the tftuned spring calculator to see which weight spring you should be using.

http://www.tftunedshox.com/info/spring_calculator.aspx

 

[timms]

hey, a 150mm travel with a 2.5" stroke, is 2.4 leverage ratio which is pretty low.

thanks for the link to the calculator, I chose the plush option and got a 428 lb rating for fox/RS/marz on a 4 bar, I suppose these would be the comparable models.

so it looks like I'm smack dab in the middle of 400 and 450 lbs, I guess I have to get some good ride time on the bike to see which would be best

 

[keen]

Run a Manitou steel spring before you drop $$ on a Ti spring. The CCDB does have slightly larger spring retainers than ie. Fox DHX or Marzocchi Roco. If you buy any spring other than CC or Manitou measure the ID before you buy.

 

[TNC]

Run a Manitou steel spring before you drop $$ on a Ti spring. The CCDB does have slightly larger spring retainers than ie. Fox DHX or Marzocchi Roco. If you buy any spring other than CC or Manitou measure the ID before you buy.

keen, I wonder if the RS Vivid springs fit the CCDB? I just put one on my Nomad, and it had slightly bigger retainers with a tiny bit bigger spring ID. I couldn't use the Fox hardware. Also I noticed the RS Vivid springs were very affordable.

 

[dropadrop]

Bos sells springs inbetween conventional stiffnesses if you want to get as close to the optimal weight as possible. They are steel though.

 

[keen]

keen, I wonder if the RS Vivid springs fit the CCDB? I just put one on my Nomad, and it had slightly bigger retainers with a tiny bit bigger spring ID. I couldn't use the Fox hardware. Also I noticed the RS Vivid springs were very affordable.

RS springs are loose @ 38mm - might hit the wide body on the CC. I run Manitou which can be found online for under $20 a pop.

 

[timms]

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220620589847

if that one does in fact have a 2.5" stroke would it work even though the eye to eye is shorter.

 

[timms]

does the eye to eye on a shock matter when buying a coil?

 

[keen]

does the eye to eye on a shock matter when buying a coil?

ID & free length matter.

 

[timms]

sweet, thx I called the guy at bikewagon and he said that eye to eye was important, I' didn't think he was right.

from what I've read My CCDB requires an ID of at least 1.43.

are there any companies that make diameters that large, I've read that manitou and RCS springs are compatible?

 

[timms]

just to clarify, would a 2.5x450 shock meant for a cane creek with an eye to eye of 8.5 work?

mine is 8.75, isn't it just whether I can preload it.

 

[timms]

would buying a coil with a 2.8 stroke be the worst thing in the work, again would adjusting the preload make a big difference.

 

[DJ Giggity]

sweet, thx I called the guy at bikewagon and he said that eye to eye was important, I' didn't think he was right.

from what I've read My CCDB requires an ID of at least 1.43.

are there any companies that make diameters that large, I've read that manitou and RCS springs are compatible?

Buying springs is confusing. There are two common ID sizes. The CCDB uses the larger one. As for spring length, that is confusing as well. Some makers mark their springs based on the length of stroke it was designed for. For example you get a 2.5 from Manitou. Others like Fox list the length the spring can safely compress before binding. I think a fox spring for a 2.5" stroke is listed as a 2.8.

The eye to eye is only important indirectly. The shop should be able to determine the spring length from the length and stroke of your shock. FWIW, a shock that is 8.75-2.5 is a weird combo. Most shocks that are 8.75" long have a stroke of 2.75". Specialized is kind of bad that way.

As for the spring rates, go for the lighter one if you are in between rates on a CCDB.

 

[keen]

Buying springs is confusing. There are two common ID sizes. The CCDB uses the larger one.

Not really so. I have an assortment of coils springs on my bench and none of the manufactures measure the same. A Fox DHX coil might measure 35.5mm, Manitou 36.5, CC 37mm, Rockshox Vivid / Romic 38mm. Want the absolute correct spring buy a Cane Creek for a Cane Creek other wise match or exceed the stroke, ID slightly larger than the spring retainers and a free length that will install fit between the retainers

 

[DJ Giggity]

Buying springs is confusing. There are two common ID sizes. The CCDB uses the larger one.

Not really so. I have an assortment of coils springs on my bench and none of the manufactures measure the same. A Fox DHX coil might measure 35.5mm, Manitou 36.5, CC 37mm, Rockshox Vivid / Romic 38mm. Want the absolute correct spring buy a Cane Creek for a Cane Creek other wise match or exceed the stroke, ID slightly larger than the spring retainers and a free length that will install fit between the retainers

I am not sure you have convinced me that it is not confusing. That is good advice and interesting info though.

 

[timms]

Thanks very much guys, thanks DJ for the added insight.

I recalculated using a sag of 28% and got a figure of 448 lbs.

once I get everything built up, I'll tinker around to see what sag I am working with. I'll probably pick up a 400lb steel coil and see how it goes.

Thanks guys

 

[timms]

so I found this : http://cgi.ebay.com/Manitou-Titaniu...&otn=3&po=LVI&ps=63&clkid=7559636597708528722

the 6" free length is fine, and I will call to verify the ID.

it has a 2.76 preload, willing cranking the preload to the desired 2.5 stroke effect the ride characteristics?

 

[dropadrop]

2.76 is not about preload, it's the maximum amount the shock can compress before it starts binding (the coils get too close to each other preventing further compression). It's important that the reading is higher then the stroke of the shock but nothing wrong with it being too high (other then the possibility that a shorter, lighter spring would exist somewhere).