CR OEM shock dyno
#11
#12
There are no amateur classes to run any of these cars in. F3 will dilute F4 just as it is gaining large enough fields to be an interesting starter/training class. They still only have 6 race weekends, most convenient to teams in the MidAtlantic states. Most people couldn't tell the difference between these cars and without a webpage and with nearly stillborn Twitter and Facebook pages, I'm guessing the F3 championship will also become history.
We should probably go back to CR shocks, although the OP hasn't posted in a while.
#13
Thread Starter
Thanks to everyone that have contributed. I still need to find a time these days to talk with Angelo about the CR shocks and how they would work with non-CR springs.
I've been debating over which MY to get. I'd love to go back in an AP1 but it can't fight with AP2s in B Street.
I've been debating over which MY to get. I'd love to go back in an AP1 but it can't fight with AP2s in B Street.
#14
This shouldn't be a hard decision: you want an AP2V2: 2006-2009 and really 2008-2009.
The drive-by-wire cars lose the air pump and get a bigger throttle body and intake manifold inlet. The later ECU can be flashed. They have EBD. For Street classes that have the wider 17" wheels. IMHO the 2008-2009 had a nicer interior. Differences in spring rates, shocks, and anti-roll bars are minor and the front bar and the shocks can be changed to anything you want.
But keep in mind, the S2000 is not the class leader in any SCCA Solo II class. There were no S2000s at the National Championship in A/Street. In B/Street, there were only 12 of 54 entries, the top S2000 finished 17th, and 5 of the last 10 were S2000s. In STR it was just a little better as ND Mazdas dominated. S2000s finished 4th, 8th, 9th, and 10th. They were 39 of 76 entries. The other top 10 cars were ND Miatas with the winner being Ian Stewart who posts here as MrSideways. He posted a description of the effort that went into that win here: https://www.s2ki.com/forums/s2000-ra.../#post24359188.
The S2000 is a great car, IMHO one of the great street sports cars of all time. However, it was designed 20 years ago, went out of production 9 years ago, and really isn't the first choice to win at Solo II. However, it is still competitive in STR and fun to drive in any class. I doubt if the difference between any OEM S2k shocks would make a meaningful difference in an autocross and any twin tube shock would be a step backward. Note: the OEM shocks are monotube and the Ohlins TTX is really a very trick monotube and around $5k/set. The least expensive trick Street class shock is probably Bilstein PSS revalved by Fat Cat, Anarky, or Anze. Of course, Penske, JRi, and Ohlins TTX racing shocks could also be used.
The drive-by-wire cars lose the air pump and get a bigger throttle body and intake manifold inlet. The later ECU can be flashed. They have EBD. For Street classes that have the wider 17" wheels. IMHO the 2008-2009 had a nicer interior. Differences in spring rates, shocks, and anti-roll bars are minor and the front bar and the shocks can be changed to anything you want.
But keep in mind, the S2000 is not the class leader in any SCCA Solo II class. There were no S2000s at the National Championship in A/Street. In B/Street, there were only 12 of 54 entries, the top S2000 finished 17th, and 5 of the last 10 were S2000s. In STR it was just a little better as ND Mazdas dominated. S2000s finished 4th, 8th, 9th, and 10th. They were 39 of 76 entries. The other top 10 cars were ND Miatas with the winner being Ian Stewart who posts here as MrSideways. He posted a description of the effort that went into that win here: https://www.s2ki.com/forums/s2000-ra.../#post24359188.
The S2000 is a great car, IMHO one of the great street sports cars of all time. However, it was designed 20 years ago, went out of production 9 years ago, and really isn't the first choice to win at Solo II. However, it is still competitive in STR and fun to drive in any class. I doubt if the difference between any OEM S2k shocks would make a meaningful difference in an autocross and any twin tube shock would be a step backward. Note: the OEM shocks are monotube and the Ohlins TTX is really a very trick monotube and around $5k/set. The least expensive trick Street class shock is probably Bilstein PSS revalved by Fat Cat, Anarky, or Anze. Of course, Penske, JRi, and Ohlins TTX racing shocks could also be used.
#15
thanks for posting this, i just ran it through my damping ratio work sheet
We can see the low speed damping is very aggressive, probably to have that stiff sporty feel for the driver. The damping is very digressive as well.
Interestingly enough the race shock valving for s2k that i've seen doesn't have nearly as much initial valving.
did you get a set of shock from Anze? I'm very curious to see his suggested valving for that as well.
We can see the low speed damping is very aggressive, probably to have that stiff sporty feel for the driver. The damping is very digressive as well.
Interestingly enough the race shock valving for s2k that i've seen doesn't have nearly as much initial valving.
did you get a set of shock from Anze? I'm very curious to see his suggested valving for that as well.
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