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Shock Dyno tests

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Old 05-22-2007, 06:21 PM
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BC
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Default Shock Dyno tests

I had one done, but have no idea how to interpret the news. I was trying to make sure I did not get into the same fiasco a fellow 928 racer (open road) had at various points in his travails with the same shocks.

Here is my thread:

https://rennlist.com/forums/928-forum/353635-got-my-shocks-dynoed-pics-inside-help.html

Any comments appreciated. I did not know the test I had done is only one option. I supposed the speed of compression is important, but I just realized that now, after I have already paid my money and recieved the shocks back from Pro Parts in Canoga Park.
Old 05-22-2007, 07:06 PM
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Geo
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Well, I'm certainly no expert. What I know is simply through discussions with one of my best friends who does all the programming for one of the top shock dyno manufacturers in the world (he even got a call from Ross Brawn - yeah that Ross Brawn). From all the discussions I've had with Doug, velocity is way more important than displacement.
Old 05-22-2007, 07:54 PM
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Cory M
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Originally Posted by BrendanC
I had one done, but have no idea how to interpret the news. I was trying to make sure I did not get into the same fiasco a fellow 928 racer (open road) had at various points in his travails with the same shocks.

Here is my thread:

https://rennlist.com/forums/showthread.php?t=353635

Any comments appreciated. I did not know the test I had done is only one option. I supposed the speed of compression is important, but I just realized that now, after I have already paid my money and recieved the shocks back from Pro Parts in Canoga Park.
I haven't looked at the thread yet but FYI- you can have shocks dyno'd in town at Bilstein Motorsports in the Poway business park.
Old 05-22-2007, 08:06 PM
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Bryan Watts
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Originally Posted by Geo
From all the discussions I've had with Doug, velocity is way more important than displacement.
Exactly.
Old 05-22-2007, 08:30 PM
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BC
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OKay. Well, then I guess I wasted 116 dollars then. Off to Bilstein in Poway.
Old 05-23-2007, 10:01 AM
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SundayDriver
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I am late to this party, but as others have said, you need force vs. velocity from the shock dyno. Shock valving responds to fluid viscosity which equates to shock speed. In general, shock forces are the same regardless of shaft position, with the exception of internal stops and the compression of Nitrogen due to shaft displacement.
Old 05-23-2007, 12:42 PM
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Thanks Mark. The plan is to go to Bilstein today and see if they will look at the konis.
Old 05-23-2007, 01:29 PM
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Geo
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If you cannot get Bilstein to look at the Konis, I can call Doug and find one of their customers in your area who will do this.
Old 05-23-2007, 02:15 PM
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I just called Bilstein Geo, and I would appreciate your assistance now, as they said that they will not test my Konis. Maybe I should have just paidz my moneyz and gotten bilsteins.

619.709.2882
Old 05-23-2007, 05:49 PM
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OK, I'll get a hold of Doug. I can't promise a quick answer, but in the next couple of days at least I should have one. If he was still at the operation in NC he would probably have it today, but since he's a programmer he can work from anywhere and anywhere is middle of nowhere Wyoming. So, e-mails will be exchanged.
Old 05-23-2007, 05:53 PM
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Bryan Watts
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Try asking for locations on the forums on the Roehrig site...the Roehrig guys seem to be quite helpful:

http://www.roehrigengineering.com/forums/
Old 05-25-2007, 12:44 AM
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Those are the guys Doug works for.
Old 05-25-2007, 11:54 AM
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Bryan Watts
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Originally Posted by Geo
Those are the guys Doug works for.
I figured as much...they are really the only folks I would bother buying a dyno from.
Old 05-25-2007, 12:47 PM
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Chris Prack
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I have a Roehrig shock dyno and could do the charts you need. PM me and I can give more info.



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