K2 / Proflex Riders Group

General => Tech Forum => Topic started by: Thunderchild on June 27, 2006, 06:40:28 am

Title: rear shock travel = ? rear wheel travel
Post by: Thunderchild on June 27, 2006, 06:40:28 am

Matno, a while ago you mentioned a conversion of actual shock travel to rear wheel travel.  Correct me if I am wrong, but wasn't it the shock travel divided by 0.6?  Example: 2.5/0.6=4.16

Thanks

Thunderchild

Title: Re: rear shock travel = ? rear wheel travel
Post by: Simon on June 27, 2006, 08:11:53 am

I think you need to know the individual bikes
shock to travel ratio,most bikes are different,
eg a bike with a 2.7 to 1 ratio
shock stroke 1.5" = 1.5x2.7=4.04" travel
                 2.0" = 2.0x2.7=5.4"   travel

anyway thats how I work things out or use the
linkage simulator.

Simon.

Title: Re: rear shock travel = ? rear wheel travel
Post by: Matno on June 27, 2006, 12:04:50 pm

Simon's example is a good one. For the Evo frames, 2.7 is a good multiplier. For example, my Swinger 3-way has a 2" stroke, which means I get 5.4" of rear travel. It's not a perfectly linear ratio, so if you had a REALLY long shock travel or a REALLY short one, 2.7 might not be the best, but for stock eye to eye and the common stroke lengths encountered on this forum, it's close enough.

A 2.5" stroke should give you 6.75" Yikes! (or Sweet! depending on how you look at it). My Swinger was supposed to be a 2.5", but it's not, and I'm kind of glad - it's perfect...

Title: Re: rear shock travel = ? rear wheel travel
Post by: Oz-SUB on June 27, 2006, 10:27:23 pm

I did some manual travel measurements on my Oz, and got a ratio of 1:2.63.

With my DHX Air stroking fully at 2.25", I get 5.9175" (6" near as dammit!), of smooth progressive travel and no movement under normal peddling.  That is sweet.

Oz-SUB

Title: Re: rear shock travel = ? rear wheel travel
Post by: willem on June 30, 2006, 03:33:30 pm

FWIW, I get 3.5" rear travel from 2" of shock stroke on my 856 model.