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Topic: Koni FSD or Bilstien Comfort Ride (Read 1574 times) previous topic - next topic

Re: Koni FSD or Bilstien Comfort Ride

Reply #25 –
Some busses also had 4 valves.  You had to make sure you were not torqueing the shell as was mentioned.

"Active air" has large diameter lines to quickly effect the coaches lean. 
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Koni FSD or Bilstien Comfort Ride

Reply #26 –
Here's a five dollar phrase I'd not known about Koni: FSD means "Frequency Selective Damper."  :dance:
1993 U-240 "La Villa Grande"..CAT 3116 w/ Pacbrake PRXB...Allison 3060 6-speed..
Previous: 1983 Airstream 310 turbo diesel, 1979 Airstream 280 turbo diesel
                                      Build # 4297
                                      PNW natives
                      Home base:  'Cactus Hug' (Ajo, Arizona)
                        DW Judy & Chet the wonder dog
                        Full-Timers 'Sailing the asphalt sea'

Re: Koni FSD or Bilstien Comfort Ride

Reply #27 –
A std shock uses a series of washers that are bent up over holes in a series of stacked washers.  As you pull or push the shocks piston through the pressurized oil depending on the speed of the pistons movement the washers flatten over the holes.

Different speeds block different holes.

Apparently the fluid displacement different flow rates through a single set of holes over time either wore the washers or broke down the oil or both.

So Koni built two separate circuits inside one shock body.  Separate low and high speed circuits.  Less wear.  Longer correct dampening.  Lifetime warranty 
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Koni FSD or Bilstien Comfort Ride

Reply #28 –
My $1100 Penske bike shock has separate adjustable high and low speed compression,and rebound circuits that I can change while riding. Bunch of different dampening curves some quite complex and even lopsided. Lifetime warranty kinda, about $150 every 4-5 years to have it feshened up. Or if you've put on so much weight that you've run out of adjustment.
Back to the subject kinda, the time delay is required otherwise the air spring and ride height valves would be fighting the dampener (shock) it will still try to fight it but at a very slow rate. Probably not much to be gained in typical corners with 2 air valves in the front. Would help during substained cross winds, or tilted roadways.
Next ? When my ride height valves need replaced are they standardized one size fits all deal?
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: Koni FSD or Bilstien Comfort Ride

Reply #29 –
Quote from: John44 –
Agree that a tripod might be more stable but that stability is a equalateral triangle,have seen some Safaris with 2 footings in back
and 1 way up front that would be more stable with 4.
We had a 34' Safari with the tripod levelers (had four previously on another coach).  With the 4 position setup, one corner could be holding less weight and you wouldn't know it.  With three, the weight is more evenly distributed.  This was much easier for us to set up (level) and we found no stability problems  since the wheels must maintain contact with the ground.  Think about building a chair vs a stool - which is more likely to wobble.  Not sure how the conversation went in this  direction.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8