I've got 2 problems I'm hoping someone can help with, first is an easy on: I'm looking for a good pedal that the pins don't continually rip out of. My current ones are loosing 4-6 pins a ride and it's driving me nuts. My second problem is the way my shock's set up I think. I just purchased a cove Shocker with a DHX 5.0 and it seems harsh on square edge hits. My thinking is that I need to set up the "high speed blow off" on the shock but I'm not sure exactly what that is on the fox shock. Is this contoled by the air pressure? I don't think this would be controled by the pro-pedal and I don't think it's the bottom out and I'm not bottoming it out, but I could be totally wrong. Thanks for the help!
Fox 5.0 and Pedal help
- Thread starter muddyfox
- Start date
a) use loctite on the pins
b) what pressure youre running in the DHX? id be prone to lowering the pressure (min 75 psi)
what weight are you running the correct spring weight?
im running about 80 psi which is why I thought maybe I need more pressure and it's a 450 spring, I'm about 170# and I'm getting 3" of sag so that all seems right
You will probably want to try a 400lb spring if you have a friend with one. 450 seems a bit high for your weight.
80 psi is extremely low. At 145 pounds I use about 125psi. It depends on where your boost valved is turned to though (mine is exactly half way).
Adjusting the boost valve will adjust the progressivity of the shock as it moves through the travel. The air pressure is tied to this as well, it's basically a trial by error type thing to get where you like it.
I would definately try a lighter spring unless all you are doing is big drops...
I ran a 400# spring on a 8.5 inch travel frame at 190 lbs. I do not know how progressive the shocker is, and that will have some effect..but on a DHR that would be too much spring.
The DHX does not have a seperate 'high speed blow off' adjustment per se (I guess you were reading the avy/shock set up thread of late..). Lower air pressure = less damping (with an absolute min of 75lbs).
I ran a 400# spring on a 8.5 inch travel frame at 190 lbs. I do not know how progressive the shocker is, and that will have some effect..but on a DHR that would be too much spring.
The DHX does not have a seperate 'high speed blow off' adjustment per se (I guess you were reading the avy/shock set up thread of late..). Lower air pressure = less damping (with an absolute min of 75lbs).
look, when it comes to DHX5 by my teory :
propedal - low speed comp.
bottom out - high speed comp.
if i would be on your place I would try to play with propedal adjustment knob...
propedal - low speed comp.
bottom out - high speed comp.
if i would be on your place I would try to play with propedal adjustment knob...
I´ve run down to 45psi on my DHX shoxs, although the rebound starts to sound weird under 70 psi... I think you get the smoothest ride with as low psi as possible, the PP full open and the boost valve at max volume. A lighter spring will probably make you want to increase psi, increase PP and lower the boost valve chamber volume. Because of the lighter spring it will be plusher, but not less harsh because of the settings above. You might want to consider changing for lighter oil and lighten up the PP at your local shock-tuner, it always works great for me. You´ll be surprised when the heavier spring actually feels plusher/smoother than the lighter one when tuned...
You're not supposed to run under 75psi.
Thanks guys, I'll get a 400 spring on the weekend and just play around with the settings from there
Just out of curiosity and not to hijack..I am running a 450 on a 2008 DHX on my bottlerocket...My shock has not broken in and im still messing with adjustments but would a lesser travel bike (5.5") and the design of a BR make sense to have a lil higher spring. I am also just above 170 lbs prolly a good 180 + with clothes and gear
This is so wrong...You need to have at least 75 PSI in that chamber.I run boost valve with 115-120 psi and bottom out half way..2 clicks for propedal.Im 150 and run a 400 on my 07 Demo 8
thread jack! i ride an 06 DHX, and i have a 450lb spring that came stock with my yeti asx. i'm only 145 lbs, but the spring seems to work fine for me. is this just because it's a single pivot? i run about 115 psi and 1/2 the bottom out, and the bike seems to ride well for when i'm trail riding and such, but the rear end doesn't track as well as i'd like it to whenever i ride downhill. should i consider changing it to a 400 lb spring at some point? i'm within the weight limit according to yeti, so i have no idea what i'm doing wrong with the shock.
spring rates have everything to do with the leverage ratio of the frame (and how it changes throughout the travel). A long travel and short travel frame could use the same spring rate if the ratios are similar enough..
TFTuned has a great spring calc on there site..just need to know your own weight, the frames travel and the shock stroke.
TFTuned has a great spring calc on there site..just need to know your own weight, the frames travel and the shock stroke.
and i found the damping loses consistency when you approach that, like even in the 80s it doesn't seem like the valving works properly, feels choppy.
OK, parallel conversations goin on, but here is another from a thread about MCs
And then, more information:SK6 said:
Hope this helps.Transcend said:
Actually, a single pivot seems to need a considerably lighter weight spring.
Ya, I am not sure what the leverage ratio is on an ASX, but I ride a single pivot at around the same rider weight, and run a 300lb spring. Of course, it's a Dh bike, not a trail bike.
On some courses I´ve had some luck with those rather strange settings. But, it´s absolutely not ideal in most situations. I apologize monkeys, just wanted to point out that the boost valve really has a big affect on the compression. And below whatever psi, it might be nice to try oil or a shim change, maybe even rebound valving to get the shock to work properly on those hits for your style and bike.
So I changed my spring and put more air in and it's made a huge difference, but when I was putting more air in I noticed on the shock it reads minimum 125 psi. Is this something new or is it frame specific? Just curious, my DHR from last year was 75 psi min and if I run below that 125 would I be doing damage to the shock?
do what it says for now.. but call fox and ask. that seems like THE most logical thing to do.
So here's the deal the 08's must have min. 125 psi, is there anyway to know if I did any damage to it running it below 125. Fox says that I'm probably alright running bottom out over 125 even though it says not to in the owners manual, it will just be a little "tougher" which I don't get at all.