Technical Tuesday: Suspension Basics

 Ban him for sexual referance!

 Please.. Tells me more about high speed rebound..

 High speed is also for square edge bumps or high speed shutter bumps.

 ^^^ your thinking Compression, not rebound

 shame that he forgot about the bottom-out adjustments.....not good...

 pperini, Didn't forget. Not all suspension, or even the majority, of suspension units offer bottom out control. Although it was left out on purpose, it will be something that is covered at a later date.

 good job PB.....nice to see a video that touches on the more intricate things about bikes.....







(not like that vid on how to patch a tire....or whatever that was...

 wow very informative...but it kinda made me think i dont wanna ride DH. to many dials to turn haha as for the last scene.........i was kinda expecting that..or at least something stupid LOL

 oh yeah sorry i thought he said high speed compression..

 Where the tech Tuesday on spring rates and sag ?

 i lol'd

 High speed compression should always mean the speed of the shaft, i.e. high shaft sheep, be it the front or the rear suspension. When the shaft changes from low to high speed or vice versa is another tuning option most of us would not play with but a tuner such as TF Tuning could if you wanted them to.

Bottoming out of the shock/fork is also different from shaft speed, most shocks and forks have a different system but have similar outcomes. It basically makes the last part of the stroke harder than the first 70% or so. Some systems are hydraulic like the Fox fit units, this is the little stack of washers on the end of the shaft. These have to force out the oil in the other part it slides into, effectivly making the end of the stroke a bit harder. on a DHX 5 it is the size and pressure of the chamber under the floating piston which will control how the damping ramps up at the end of the stroke.

Changing the low speed can amke it feel similar to a propedal tuning option but they are not the same. You would normally change the low speed first and do the propedal type tuning later on.

Every company has a different take on when the changes and ramps should take place and if it should be hydraulic, pneumatic, air/hydro, open or closed bath etc. Some are just plain better designs, some more cost effective, some easier to work on. Hope it helps

 same was soo helpful cheers

 there aren't many choices with coil sprung forks, especially those without preload adjustment. Buy soft or extra soft spring assembly, that's all you can do. RS should state somewhere in product manual which spring suits your weight. For my feeling you sit somewhere between Soft and X-soft.

 Thanks Waki, now the hard part of sourcing one in Africa :-/

 CRC... or just go to some LBS, RS used to be quite good with spare parts availability (at least in EU)

 i've been in contact with the rockshox import agent here but still waiting on his reply

 thanks Carlos, you've just given me more info than the agent could in a week, guess i'm in for a mission, props for the help

 wow,very precise, hahah whatever works

 That was helpful even when i wasn't sure about settings but i made this same setting how he said was working perfect,that was two years ago

 woudl of thought it would be high as its gonna be fast hard hits

 The gate basically locks out the shock until it detects a force that is big enough to open it, and then it becomes active again for the big hits.

 Ahh right cheers