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Old 10-24-2008, 07:39 AM   #1
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Question Suspension and spring rates?

Is there any way I can find out what spring rate I need for my suspension. I know I have called all the experts, I am just trying to learn this stuff and didnt know if any of you more experienced racers had any knowledge you were willing to share.

I am looking at buying a used Penske double clicker for my track only 04 CBR 600RR. It has a 6X700 spring rate on ther now (thats what he told me) and only has 6 trackdays since it was serviced by the Penske people in PA.

Info, smart A-$-$ remarks, comments, thread whor-ing, it's all allowed,. but I would prefer to stick to knowledge and experience here!

Thankg guys!
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Old 10-24-2008, 07:48 AM   #2
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call Motorcycles Unlimited dont mess around guessing or you will hate yourself. Patrick chime in and help this bro out.
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Old 10-24-2008, 07:52 AM   #3
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Not sure if different manufactures label spring rates differently.

Here is racetech's info though:

http://www.racetech.com/evalving/menu/searchstreet.asp
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Old 10-24-2008, 07:54 AM   #4
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Man, you're gonna get a lot of different answers here, so let me be among the first. With your limited knowledge of the subject, (no offense, of course), you'd be best served taking you and your bike to someone who can set the bike up for you. (Raceworx's Jimmy Cambora comes to mind first, but he's in the DFW area. RoadandTrack's Keith Hertell is a pretty solid bet, too, but he's in the SA area.) Patrick at Motorcycles Unlimited is local and knows what he's doing - probably your best bet right there. Have someone who knows set-up get the bike in the ballpark for you. They'll choose springs - front and rear - that will be well suited for your weight, riding level and riding style. Once your legs are set-up, you rarely have to make major changes, so getting it right the first time is pretty important.

DIY for suspension stuff should be left to 1) those with some experience and/or 2) those who don't mind getting it wrong before they get it right

Perhaps the first thing you should do is Google suspension set-up and read a few articles. Get familair with the terminology.

Here's a Google result that is helpful. There are tons more out there.

http://www.gostar-racing.com/informa...ion_set-up.htm
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Old 10-24-2008, 08:18 AM   #5
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Racer,
I figured as much as do not plan on doing ne thing myself, What I am trying to get here is am I better suited to pick up this shock and have it rebuilt (money wise) or getting a new one set up.

Sorry If I did not come across clear. I want this based off of the information I gave about that particular shock! Assuming I get it between 3 and 400 bux can I have it set up for me for fairly cheap or will I end up better off getting a new one.
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Old 10-24-2008, 08:22 AM   #6
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More food for thought, pick a builder/tuner and stick with them. The ones Racer997 listed are very good. I'd add Billy Wiese to that list, he is in the New Braunsfels area. Patrick certainly gets my vote, esspecially because he is local. DON'T LET ANYONE FIDDLE WITH YOUR BIKE EXCEPT THAT TUNER. If your at the track and that particular tuner is not there, call them. Don't let people adjust anything on the bike. For the first time, in a long time Jim Cambora was not at TWS (Texas World Speedway) this past weekend, and I can bet money his phone was ringing off the hook. His riders did not just try something or have another rider do anything to thier bikes. They called Jim or just rode around it.
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Old 10-24-2008, 08:27 AM   #7
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Dude call Penske let them tell you what spring you need, and the base pre-load setting for said spring. Then buy it, and then put it on. Then go to any trackday and have your suspension setup trackside. No black magic involved. I think valving is a differant matter, but you can handle swapping a spring. (Puts on flame suit..)
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Old 10-24-2008, 08:58 AM   #8
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Quote:
Originally Posted by kawi jm View Post
More food for thought, pick a builder/tuner and stick with them. The ones Racer997 listed are very good. I'd add Billy Wiese to that list, he is in the New Braunsfels area. Patrick certainly gets my vote, esspecially because he is local. DON'T LET ANYONE FIDDLE WITH YOUR BIKE EXCEPT THAT TUNER. If your at the track and that particular tuner is not there, call them. Don't let people adjust anything on the bike. For the first time, in a long time Jim Cambora was not at TWS (Texas World Speedway) this past weekend, and I can bet money his phone was ringing off the hook. His riders did not just try something or have another rider do anything to thier bikes. They called Jim or just rode around it.
thanks sounds like really good advice! I will do that!
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Old 10-24-2008, 09:16 AM   #9
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Quote:
Originally Posted by kawi jm View Post
More food for thought, pick a builder/tuner and stick with them. The ones Racer997 listed are very good. I'd add Billy Wiese to that list, he is in the New Braunsfels area. Patrick certainly gets my vote, esspecially because he is local. DON'T LET ANYONE FIDDLE WITH YOUR BIKE EXCEPT THAT TUNER. If your at the track and that particular tuner is not there, call them. Don't let people adjust anything on the bike. For the first time, in a long time Jim Cambora was not at TWS (Texas World Speedway) this past weekend, and I can bet money his phone was ringing off the hook. His riders did not just try something or have another rider do anything to thier bikes. They called Jim or just rode around it.
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Old 10-24-2008, 09:23 AM   #10
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Staying local would defintely be your best option as already stated.

But I'm just going to throw this guy's name out there. He's from NC, and did a lot of work for me and some buddies of mine when I lived there. He's a Deal's Gap regular, and I have yet to meet anyone that knows as much about suspension as him. Just be careful though, once you get him started talking about suspension on the phone, it's sometimes hard to get him to stop.

It's a family owned shop, and customer service is amazing. He basically does a lot of work for a lot of the racers out East and the agrresive street riders that frequent the Dragon's Tail.

You basically have so many options down here, you can't even count them on one hand. I'll speak from personal experience that Patrick knows what he's doing, and offers amazing customer service. But if your ever wanting to look for someone new, or if any one happens to move out eastward, Rick @ Cogent Dynamics would probably be the one you want touching your forks or shock.

http://motocd.com/index.php?option=c...tpage&Itemid=1

OH, and if you ever make a trip to Deal's Gap, he lives right around there and spends his off time embarrising people going down the Dragon. Give him a ring and you might catch him there! He would be more than willing to help give you a decent set-up to keep you from running off the mountain.
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Old 10-24-2008, 12:44 PM   #11
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call patrick 281-444-0545

he can help you with all your suspension needs. nothin beats a local guy that knows his .

btw, spring rating is not determined by weight alone. it's also determined by rider style. get with patrick, and be sure to give your exact weight (some people lie about their weight cuz they are either too fat or too skinny and embarassed by it), and also describe your exact riding style and experience level (just like the weight thing, people will lie about how fast they really are, be truthful...or you'll beat yourself up when the bike won't tune how you need it)
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Old 10-24-2008, 01:21 PM   #12
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Quote:
Originally Posted by houseofpain View Post
call patrick 281-444-0545

he can help you with all your suspension needs. nothin beats a local guy that knows his .
btw, spring rating is not determined by weight alone. it's also determined by rider style. get with patrick, and be sure to give your exact weight (some people lie about their weight cuz they are either too fat or too skinny and embarassed by it), and also describe your exact riding style and experience level (just like the weight thing, people will lie about how fast they really are, be truthful...or you'll beat yourself up when the bike won't tune how you need it)
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Old 10-24-2008, 10:21 PM   #13
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ive already spoken with Motorcycles Unlimited!!! my concern was it worth it to buy used and have serviced and new spring.!!!!
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Old 10-25-2008, 08:15 AM   #14
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Quote:
Originally Posted by DEAN LADEN View Post
ive already spoken with Motorcycles Unlimited!!! my concern was it worth it to buy used and have serviced and new spring.!!!!
Usually not. Everyone who is selling a used Ohlins or Penske wants to get all of their money back. If you have to have it serviced or a new spring, you just lost all the savings of buying your own with your spring on it.

+1 to going to the RaceTech site for their spring calculator, but +100000 for going to your local Houston suspension guys for support.
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Old 10-25-2008, 02:14 PM   #15
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Quote:
Originally Posted by DEAN LADEN View Post
ive already spoken with Motorcycles Unlimited!!! my concern was it worth it to buy used and have serviced and new spring.!!!!
It just depends on how much you get the shock for.
FYI - A Penske is cheaper to rebuild and get parts for.
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Old 10-25-2008, 02:44 PM   #16
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Quote:
Originally Posted by DEAN LADEN View Post
Is there any way I can find out what spring rate I need for my suspension. I know I have called all the experts, I am just trying to learn this stuff and didnt know if any of you more experienced racers had any knowledge you were willing to share.

I am looking at buying a used Penske double clicker for my track only 04 CBR 600RR. It has a 6X700 spring rate on ther now (thats what he told me) and only has 6 trackdays since it was serviced by the Penske people in PA.

Info, smart A-$-$ remarks, comments, thread whor-ing, it's all allowed,. but I would prefer to stick to knowledge and experience here!

Thankg guys!

go to racetech website or just send in your forks to traxxion 700$ for valving and spring.
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Old 10-25-2008, 02:45 PM   #17
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Quote:
Originally Posted by tomLSTD View Post
Usually not. Everyone who is selling a used Ohlins or Penske wants to get all of their money back. If you have to have it serviced or a new spring, you just lost all the savings of buying your own with your spring on it.

+1 to going to the RaceTech site for their spring calculator, but +100000 for going to your local Houston suspension guys for support.

ill put my money on sending the forks to traxxion.
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Old 10-25-2008, 04:35 PM   #18
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Quote:
Originally Posted by Spidermonkey View Post
ill put my money on sending the forks to traxxion.
That's nice. I'll spend mine locally with our site sponsors and others who support CMRA racing from folks I KNOW will support me and do the job right.


But you can send your stuff to Max if you want, it's no skin off my nose.
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Old 10-25-2008, 06:10 PM   #19
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Im with you Tom. And the locals will help dial it in as well since they spend their money/time coming to the track to support us.
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Old 10-25-2008, 08:25 PM   #20
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