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Valving charts & specs
NOTE: The term “valving” usually refers to the actual valve parts used in a hydraulic shock to get a desired Force-Velocity curve.
Here it merely refers the Force-Velocity curve, which is determined by the user-changeable “settings” on the MagneShock Controller.
In most cases, the use of these graphs & specs will eliminate the need for a shock dyno.
If you set your Controller to the settings shown you will get a Force-Velocity Damping curve very close to those shown here.
Each page contains:
Graphs from actual dyno tests on a Roehrig dyno - all are done at approx 85 Degrees F on a standard “5261-20” MagneShock (the “-20” suffix is STANDARD damping range -                stiffer or softer ranges are available).
Specs on the velocities tested.
Actual SETTINGS on the MagneShock CONTROLLER to get these “curves”.
There are two (2) types of dyno readings & charts:
PVP: Peak Velocity Points.
Tests are made at various velocities & the damping values are taken at the highest velocity (in both Rebound & Compression) for each test.
The “curve” is defined by the Damping force reading at the different PEAK velocities.
This is a simplified means of seeing the Force-Velocity curve.  It does not show hysteresis (a shock will usually have a lower value of damping while
accelerating. up through a given velocity and a higher damping while decelerating).
CVP: Constant Velocity Points.
All damping values are recorded as the dyno accelerates up to the peak velocity
and decelerates back down (in both Rebound & Compression) for each test.
The “curve” is defined by all the damping values recorded, at all intermediate velocities
as well as at the peak velocity of the test.
This explicitly shows “HYSTERESIS” - the difference in damping values while accelerating
as compared to while decelerating (and time delays).
“STRAIGHT Valvings”
“SPLIT Valvings”
These are called “50-50” valvings(but actually have a little more Rebound
damping than Compression damping) They are similar to the original
Carreratm D-T (dual-tube) valvings.
These are variations where the damping in Rebound is raised or lowered in relation to
Compression (there is more difference between Rebound & Compression than the standard “straight valvings” have).
EX: A #6/4 has the Rebound characteristics of a “std” #6 valving and the Compression of a #4 valving.  
There are a nearly infinite number of “curves” possible.
These outline the most common to give you an idea where to start and/or how the “settings” may need to be varied to get the desired results.
You can advance to any page/graph by clicking on the following: You can advance to any page/graph by clicking on the following:
Std1to9valvingsPVPgraphs
No1CVPgraph
No2CVPgraph
No3CVPgraph
No4CVPgraph
No5CVPgraph
No6CVPgraph
No7CVPgraph
No8CVPgraph
No9CVPgraph
No3PVPgraph6inS
No4PVPgraph6inS
No5PVPgraph6inS
No6PVPgraph6inS
No7PVPgraph6inS
No8PVPgraph6inS
No9PVPgraph6inS
No369CVPgraphLOWvel
No369CVPgraphHIGHvel
No6CVPgraphHYSTERISIS
SplitValvePVPgraphs
Split64PVPgraph
Split64FineTunedPVPgraph
Split73PVPgraph
Split73FineTunedPVPgraph
Split82PVPgraph
Split82FineTunedPVPgraph
Split91PVPgraph
Split91FineTunedPVPgraph
Standard 1 - 9 “PVP” valvings (similar to old Carreratm D-T) @ 0.5-1-2-3-4-6-8 inch/sec piston velocities
Code 0 ½ 1 3 7 (Reb/Comp settings)
#1 16/15 17/16 18/17 35/26 48/36
#2 15/16 24/16 50/40 90/70 120/97
#3 15/15 17/17 60/45 100/90 140/130
#4 15/15 21/19 65/45 110/100 160/150
#5 23/15 52/30 80/60 130/110 220/170
#6 25/15 68/30 90/72 160/130 280/240
#7 45/15 85/47 115/90 200/160 320/300
#8 73/23 100/42 162/90 240/180 320/320
#9 100/37 170/57 190/100 240/200 320/320

#1 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#1 16/15 17/16 18/17 35/26 48/36

#2 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#2 15/16 24/16 50/40 90/70 120/97

#3 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#3 15/15 17/16 55/20 100/80 140/130

#4 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#4 15/15 21/19 65/45 110/100 160/150

#5 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#5 23/15 52/30 80/60 130/110 220/170

#6 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#6 25/15 68/30 90/72 160/130 280/240

#7 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#7 45/15 85/47 115/90 200/160 320/300

#8 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#8 73/23 100/42 160/90 240/180 320/320

#9 CVP plots at 0.5 - 1 - 2 - 3 - 4 - 6 - 8 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#9 100/37 170/57 190/100 240/200 320/320

#3 PVP plot @ 8 in/s with CVP plot at 6 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#3 15/15 17/16 55/20 100/80 140/130

#4 PVP plot @ 8 in/s with CVP plot at 6 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#4 15/15 21/17 72/40 110/100 160/150

# 5 PVP plot @ 8 in/s with CVP plot at 6 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#5 23/15 63/27 80/60 130/110 220/170

#6 PVP plot @ 8 in/s with CVP plot at 6 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#6 25/15 68/30 90/72 160/130 280/240

#7 PVP plot @ 8 in/s with CVP plot at 6 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#7 45/15 85/47 115/90 200/160 320/300

#8 PVP plot @ 8 in/s with CVP plot at 6 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#8 73/23 100/42 162/90 240/180 320/320

#9 PVP plot @ 8 in/s with CVP plot at 6 in/s
Code 0 ½ 1 3 7 (Reb/Comp settings)
#9 100/37 170/57 190/100 240/200 320/320

#3, 6 & 9 CVP plots @ 0.5 in/s (with PVP plots also).
Shows damping force at super-low velocities.
Code 0 ½ 1 3 7 (Reb/Comp settings)
#3 15/15 17/16 55/20 100/80 140/130
#6 25/15 68/30 90/72 160/130 280/240
#9 100/37 170/57 190/100 240/200 320/320

#3, 6 & 9 CVP plots @ 6.0 in/s (with PVP plots also).
Shows damping force at higher velocities & hysteresis.
Code 0 ½ 1 3 7 (Reb/Comp settings)
#3 15/15 17/16 55/20 100/80 140/130
#6 25/15 68/30 90/72 160/130 280/240
#9 100/37 170/57 190/100 240/200 320/320

#6 CVP plots @ 0.5 - 3.0 - part of 6.0 in/s (with PVP plots also).
Shows “typical” hysteresis & damping force at various velocities.
Code 0 ½ 1 3 7 (Reb/Comp settings)
#6 25/15 68/30 90/72 160/130 280/240

SPLIT-VALVES “PVP” graphs (similar to old Carreratm D-T) @ 0.5 - 1 - 2 - 3 - 4 - 6 - 8 inch/sec piston velocities
Code 0 ½ 1 3 7 (Reb/Comp settings)
#6/4 25/15 68/19 90/45 160/100 280/140 (RED)
#7/3 45/15 85/16 115/40 200/70 320/97 (BLACK)
#8/2 60/15 94/16 140/22 210/38 320/52 (GREEN)
#9/1 90/15 150/16 162/17 240/26 320/36 (BROWN)

#6/4 Split “PVP” valvings & “CVP” @6inch/sec
This is “std” #6 Rebound settings & “std” #4 Compression settings.
NOTE: The Reb is basically identical to a #6 valve and the Comp is nearly identical (maybe 5 lb heavier than the “std” #4).
Code 0 ½ 1 3 7 (Reb/Comp settings)
#6/4 25/15 68/19 90/45 160/100 280/150 (BLUE)
(#6 25/15 68/30 90/72 160/130 280/240) (RED)
(#4 15/15 21/19 65/45 110/100 160/150) (BLACK)
#6/4 Fine-Tuned Lowering the compression settings at 7 in/s made it almost perfect:
Code 0 ½ 1 3 7 (Reb/Comp settings)
#6/4 25/15 68/19 90/45 160/100 280/140 (GREEN)

#7/3 Split “PVP” valvings & “CVP” @6inch/sec.
NOTE: Using the Std #7 Reb & Std #3 Comp:
Code 0 ½ 1 3 7 (Reb/Comp settings)
#7 45/15 85/47 115/90 200/160 320/300 (RED)
#3 15/15 17/17 60/45 100/90 140/130 (BLACK)
#7/3 45/15 85/17 115/45 200/90 320/130 (GREEN)
Reb is a bit stiffer than a #7 valve and the Comp is a lot stiffer (nearly a “std” #4).

#7/3 Fine-Tuned Using the Std #7 Reb & Std #2 (instead of #3) Comp comes out pretty close.
Code 0 ½ 1 3 7 (Reb/Comp settings)
(#7 45/15 85/47 115/90 200/160 320/300) (RED)
(#2 15/16 24/16 50/40 90/70 120/97) (BLACK)
Use #7/2 45/15 85/16 115/40 200/70 320/97 (BLUE) see ABOVE chart for PVP graph
 

#8/2 Split “PVP” valvings & “CVP” @6inch/sec.
NOTE: Using the Std #8 Reb & Std #2 Comp:
Code 0 ½ 1 3 7 (Reb/Comp settings)
#8 73/23 100/42 162/90 240/180 320/320 (RED)
#2 15/16 24/16 50/40 90/70 120/97 (BLACK)
#8/2 73/16 100/16 160/40 240/70 320/97 (GREEN)
Reb is a bit stiffer than a #8 valve (about 8-1/2, #9 is VIOLET -) and the Comp is a lot stiffer (slightly stiffer than a “std” #3 - BLUE).

#8/2 Fine-Tuned Reducing the Reb code to about ½ way in between #7 & #8 (60 - 94 - 140 - 210 - 320),
and using a Comp valve code in between #1 & #2: 15 - 16 - 22 - 38 - 52).
Code 0 ½ 1 3 7 (Reb/Comp settings)
#75/15 60/15 94/16 140/22 210/38 320/52 (BLUE)
Now Reb is slightly stiffer than #8 (RED) & Comp is very close to #2 (BLACK)

#9/1 Split “PVP” valvings & “CVP” @6inch/sec.
NOTE: Using the Std #9 Reb & Std #1 Comp:
Code 0 ½ 1 3 7 (Reb/Comp settings)
#9 100/37 170/57 190/100 240/200 320/320 (RED)
#1 16/15 17/16 18/17 35/26 48/36 (BLACK)
Tried #9/1 100/15 170/16 190/17 240/26 320/36 (GREEN)
Reb is much stiffer than a #9 valve and the Comp is a bit stiffer than a “std” #1 (we will not be able to reduce Comp as it is at MIN now).
If we are looking for a really stiff Reb we could keep this - “as is”.

#9/1 Fine-Tuned To match the #9 curve we can reduce the Reb at 0, ½ & 1 in/s to 90 - 150 - 162:
This has a bit more hysteresis in Reb (the PVP matches quite well) & a bit more damping in Comp (we are at MIN already).
Code 0 ½ 1 3 7 (Reb/Comp settings)
#9 100/37 170/57 190/100 240/200 320/320 (RED)
#1 16/15 17/16 18/17 35/26 48/36 (BLACK)
Used: #9/1 90/15 150/16 162/17 240/26 320/36 (BLUE)
 
MagneShock™ designs, tests, and manufactures active damping
suspension systems using Magneto-Rheological (MR) technology.
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