Author Topic: Titanium Springs (Read 6986 times)

dirt_doc · « **on:** January 13, 2008, 01:09:56 pm »

Anyone have experience with the titanium springs offered on ebay (see link below)? I'm thinking of using one on my 857.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=220191147835&ssPageName=STRK:MEWA:IT&ih=012

whisperdancer · « **Reply #1 on:** January 14, 2008, 05:49:58 am »

That particular spring (425 to 475 lbs) seems a bit hard for the x57 bikes. The way big x57's had a 350lbs spring in the back, while the large ones had a 300lbs. The small came with a 250lbs.
For the crosslinks, they are more sensible to spring rate. Originally with 200lbs, there was an option of a 215lbs (I think). I put a 250lbs on mine and it's just to stiff, loosing all the progressivity of the fork.

shovelon · « **Reply #2 on:** January 14, 2008, 09:01:12 am »

That is good to know, 300 for the rear, 200 for the front for a large x57.

orange · « **Reply #3 on:** January 14, 2008, 10:08:08 am »

doesn't it depend if you are using ODS or Noleen? From memory the ODS uses 350ish and the Noleen uses 450ish? Or am I wrong? Was it the other way around?

whisperdancer · « **Reply #4 on:** January 14, 2008, 11:44:45 am »

I am pretty sure that the X57 used the spring rates I wrote about with nollen shocks.

I had a way big 757 that came with 350lbs rear and 200lbs front.
The two crosslink carbon forks I have have a 200lbs spring.
My large Animal came with 300lbs rear.
My large K2 1000 frame came with a 300lbs spring.
A friend's '97 small size Beast came with a 250lbs spring.

I believe a 450-475lbs spring can be used in the rear, but I think the ride will be stiff.
I don't know about ods though. The 657 could have another spring rate.

Willem · « **Reply #5 on:** January 14, 2008, 07:45:53 pm »

There are spring tables buried in the how-to's.

On the strut tailed bikes with a 2:1 travel to shock ratio my experience has been a 300# shock is just about right for 200# rider.

On the front... well... anything soft enough to actually work just bobbed when pedaled with anything but perfect spinning and dove at the touch of the brake. Nevertheless, a 200# spring up front - with crosslinks - should be good for a 200# rider.

BTW, I had a yellow Proflex spring labeled for 200# that measured out at 175# actual. Caveat Emptor...

kiwi · « **Reply #6 on:** January 15, 2008, 12:44:23 am »

as mentioned above,the awesome spring tables

Simon · « **Reply #7 on:** January 16, 2008, 02:50:37 pm »

I wouldn't bother with Ti springs.
Very expensive for little wieght loss and they are known to fatique quickly (though I suspect there getting better).
Stick with the tried and tested steel spring you'll be far better making sure your running the correct
spring rate rather than worring about weight.

Simon.

Carbon_Angus · « **Reply #8 on:** January 17, 2008, 12:54:53 pm »

or get a dffrerent shock altogether..

i have a ti spring that i don't use it's the equivalent of a 300# steel, PM if you are interested.

Simon is right about the fatigue, yet it is much lighter than the steel spring.

BTW when did this place change???

rapiddescent · « **Reply #9 on:** January 19, 2008, 05:16:40 am »

sorry to be a bit kate in the conversation - but the Ti springs have such a high rating because they are very short and don't compress much. You will only get an inch of travel out of them. When K2 was still a bike company, their pro XC riders used the Ti springs. I was riding with Nora Roesche (XC womens Worlds 1998ish) and held her 957/K2 5000 mashup bike for a bit and it must have weighed about 20 lbs.

callum
rds

kiwi · « **Reply #10 on:** January 19, 2008, 03:35:45 pm »

Quote from: Carbon_Angus on January 17, 2008, 12:54:53 pm

BTW when did this place change???

new years day canadian time

Colin · « **Reply #11 on:** January 21, 2008, 08:28:52 am »

I have run Ti springs on my 4000se for nearly 3 years - no probs.

200lb in front and 550lb in rear, both about 90mm long uncompressed.
I weigh about 200lb kitted out to ride.
They are not much lighter than steel, The rear one is 148g against a steel one at 232g, but the best bit is they don't rust!

Callum, surely the Ti spring will compress until it either binds or it permanently deforms? (which shouldn't happen before bind) Why only 1"? Anyway, that's not much less than they need to compress.....?
I can get the full 1.3" of compression out of my rear NR-4 or NR-5 (i.e. the rubber bumper has bottomed out) and the full 1.75" out of the front NR-2 or NR-5 with Ti springs fitted.

My understanding is (and I may be mistaken.......) The spring rating is lbs per inch of compression and you need to select one to prevent hard bottoming out of the shock. So in the above cases my shocks will bottom out at 350lb on the front and 715lb on the rear, (That's actual weight on the shock not weight on the wheel, leverage etc.....)

I actually think the front coil is a little light for me at 200lb and so I do have a 215lb ready to go, but on the other hand I do like the soft initial feel of the fork.

I'm a convert to Ti Springs!

Photo attached, can anyone see it?

Col.

orange · « **Reply #12 on:** January 21, 2008, 01:12:01 pm »

looks nice anyway

kiwi · « **Reply #13 on:** January 21, 2008, 06:43:50 pm »

Quote from: Colin on January 21, 2008, 08:28:52 am

Photo attached, can anyone see it?

Col.

can see(slightly out of focus

) pic just fine!

Colin · « **Reply #14 on:** January 22, 2008, 06:51:53 am »

Quote from: kiwi on January 21, 2008, 06:43:50 pm

Quote from: Colin on January 21, 2008, 08:28:52 am

Photo attached, can anyone see it?

Col.

can see(slightly out of focus ) pic just fine!

Focus? what's that? I think it was just camera shake form getting overly excited about all that Ti.......<GRIN>

Col.

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Author Topic: Titanium Springs (Read 6986 times)

Willem