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post #1 of 14 Old 12-01-2009, 4:20 PM Thread Starter
 
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Help with suspension adjustments

Well I've got the bike together and been riding it every time it stops raining around here. got almost 500 miles on it now (350 in the last few days) and want to make it more suited to my riding habits/style.

I realize its a street bike and therefore isn't the most comfy riding bike but I think I'm too heavy for the way the dealer set it up. I'm not a racer, so how well it leans isn't as important to me as how long I can ride it for before my back gives out. I use the bike more like a cruiser than what it was really meant for.

I have a friend (about 265 lbs. Big guy) with an 07 R1 and his bike feels like it handles the various bumps and grooves in the road much better than my bike with the way his bike was set up for him.

I weigh about 225 lbs (102 kilos-ish I think for you people across the sea) and about 6'3'' if that helps any. I searched but couldn't find much. Any advice or any good threads with pointers?

Thanks guys.
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post #2 of 14 Old 12-01-2009, 4:33 PM
 
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Re: Help with suspension adjustments

You're right where I'm at for height and weight. I'll save you the trouble now. You need to look into upgrading your fork internals with stiffer springs. Revalving would be good but not needed.

As for the rear you might get away maxing the rear shock to it's hardest setting but it's not gonna be ideal. Lots of aftermarket shocks for fairly cheap.

Check out race tech for your fork internals.

Good luck

"If you feel you're in control you're not going fast enough" ~ Mario Andretti
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post #3 of 14 Old 12-01-2009, 6:26 PM Thread Starter
 
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Re: Help with suspension adjustments

Going by Race Techs calculator it seems as if stock is the best for me?

Spring Rate Calculation
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post #4 of 14 Old 12-03-2009, 9:16 AM Thread Starter
 
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Re: Help with suspension adjustments

Do you still think I should change them, even though Race tech says otherwise? Anybody else?
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post #5 of 14 Old 12-03-2009, 10:38 AM
 
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Re: Help with suspension adjustments

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Originally Posted by wr-ecks View Post
Do you still think I should change them, even though Race tech says otherwise? Anybody else?
I'm 6'3" and 215lbs now ... I was 225llbs. I maxed everything the stock stuff had it just wasnt enough.

Once I did the race tech internals the front felt amazing but the rear was complete crap untill I changed it out for the Ohlins.

"If you feel you're in control you're not going fast enough" ~ Mario Andretti
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post #6 of 14 Old 12-04-2009, 10:49 AM Thread Starter
 
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Re: Help with suspension adjustments

Are you talking about for racing purposes or even just for riding around on the street?
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post #7 of 14 Old 12-04-2009, 11:00 AM
 
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Re: Help with suspension adjustments

Trust me, after you get your suspension set up, you'll not care if it's for the track or the street. the bike feels and reacts ALOT better than it does with the standard setting. They have adjustments on the suspension for a reason, to make it YOUR suspension.

i'm with Mr. Speed in upgrading the internals for your forks. I'll be purchasing new fork springs for the front and hopefully a triple clicker for the rear.

For reference, i do ride only at the track on my blade, BUT, can see the huge benefit of having the suspension set up.
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post #8 of 14 Old 12-04-2009, 2:28 PM
 
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Re: Help with suspension adjustments

Go to a trackday and spend the $30-40 to have a pro work with you on suspension all day. That's the best way to get it set up right.
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post #9 of 14 Old 12-04-2009, 11:44 PM Thread Starter
 
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Re: Help with suspension adjustments

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Originally Posted by Junkie View Post
Go to a trackday and spend the $30-40 to have a pro work with you on suspension all day. That's the best way to get it set up right.

Do you think I should do this even though I don't really plan to ride it on a track or even very aggressively on the street?

I changed it a bit the other day. turned the pre load up a bit stiffer and backed out the rebound a tiny bit. seemed to help. Ill mess with it some more when I have time. Can't ride too often in the winter months around here.

I don't think they will be doing track days anywhere around here for a few months when the weather gets a little nicer.
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post #10 of 14 Old 12-05-2009, 9:48 AM
 
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Re: Help with suspension adjustments

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Originally Posted by wr-ecks View Post
Do you still think I should change them, even though Race tech says otherwise? Anybody else?
For what you are wanting out of your suspension at your weight I don't see any need to change your springs. I am 6' 5 270 lbs and I have been able to get everyone of my bikes stock suspensions to work just fine on the street. First thing you need to do is find the stock settings for your suspension both front and rear. It will be in your owners manual or a shop manual. If you don't have either of these you can look here for a good base setting. Sport Bike Motorcycle Suspension Settings - Sportbike Review - Sport Rider The list only has up to the 06 CBR1000 but it should be the same for 07. This is just a base anyway to get you started.

Once you have done this then you need to check your suspensions sag. This will make sure that your suspension has plenty of travel to absorb bumps as well as handle dips without bottoming or topping out. There are serveral ways to set sag on a motorcycle but for the street I have found after 18 years of riding that the zip tie works the best for the front and I do the rear by feel. For your forks take a zip tie and wrap it around one of your forks just below the dust seal. Then take the bike for a ride. Make sure you do a couple of hard stops and ride the bike like you would on a daily basis. This will put the forks through their full range of motion for your riding style. Then check to see where the zip tie is on your fork. I find that 8-10 mm above the end of the fork works best for me. It gives me plenty of suspension travel but leaves a 8-10 mm cusion just in case I hit a really bad bump, pot hole, or have to make an emergency stop. The last thing you want in any of these cases is for your suspension to bottom out. If the distance between the end of your fork and the zip tie is more than 8-10 mm then decrease your preload. If it is less then increase your preload.

As for the rear, I start by setting the preload so that the rear of the bike squats about 30-35 mm when I sit on it. I don't take a measurement or anything like that I just have a feel by now for how much the bike should sag when I sit on it for my riding style. Then I take the bike out a for good ride and adjust the preload on the shock until I find a setting that I like the feel of. Once you have your sag set where you like it then you can start fine tuning the suspension to your liking with the rebound and compression settings. Whatever you do get a note pad and right down your base settings, any changes you make to them, and how the suspension reacted when you made the adjustment. Then you will be able to go back and look at your notes to see what worked for you and what didn't. Then it will be easier to dial your ride in.

Now I know what I have just posted isn't a racers method for the perfect setup up for a motorcycle suspension and I am sure I will get flamed for it but for everyday riding like what you are looking for it is the easiest and most effective way I have found to get a stock suspension setup up for a decent ride on the street.

A few other things that can help a motorcycle absorb those bumps is tire choice and riding style. For the type of riding that you like a good sport touring tire may give you a smoother ride, longer tire life and still have plenty of grip to let you get a little crazy in the twistie sections. As for your riding style you should be gripping the tank with your thighs and holding yourself up with your stomach and back muscles. Your arms should also be slightly bent and keep a lose grip on the handle bars. This will allow your arms to act like suspension and make your ride a lot smoother. You can also use your legs to help handle some of the bigger bumps. You don't have to stand up on the bike but you can slightly raise yourself up off of the seat when you see a big bump ahead.

Now if you decide one day that you want to get more aggressive on the street, your stock suspension is up for this task to. The key to making it work for you is smooth throttle and brake action. A rider with a smooth right hand on a stock bike can out ride a ham fisted rider on a race bike any day. Your throttle and brake have a huge effect on how the bike transfers weight thus effecting how your suspension handles.

All of this being said, a stock suspension has no where near the capabilities of a good race suspension that is setup for your weight but if you are not looking to shell out extra money for your suspension then it is more than capable of handling everday riding with in the legal limits of the road and then some.
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post #11 of 14 Old 12-06-2009, 6:52 PM Thread Starter
 
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Re: Help with suspension adjustments

Thanks very helpfull
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post #12 of 14 Old 12-07-2009, 9:12 AM
 
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Re: Help with suspension adjustments

No problem. Let us know if you get it sorted.
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post #13 of 14 Old 12-07-2009, 12:00 PM Thread Starter
 
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Re: Help with suspension adjustments

will do. I think I might go for a ride today and mess with it some more but we'll see. High of 31 degrees today they are sayin. It's hard to convince myself to ride very long in this cold, even if the sun is shining and there is no clouds.
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post #14 of 14 Old 12-07-2009, 6:40 PM
 
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Re: Help with suspension adjustments

If you do set your suspension up in those temps you will probably have to tune it again when it warms up outside. The fluid in the forks and shock flow a lot slower in the cold. Another thing that I didn't metion was to make sure you make small adjustments and keep the front and the back of the bike even. When you push down on the seat of the bike the forks and shock should compress and rebound evenly. If you get the bike uneven it will be like riding a seesaw.
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