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post #1 of 27 Old 11-25-2006, 7:08 PM Thread Starter
 
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Front suspension question

When I toss the bike into a turn quickly it almost feels like the front end is coming up over a hump. I get the same thing on quick side to side transistions.

Is this:
Poor technique on my part causing it (if so be specific if possible so I can correct it)
To much preload
Not enough rebound damping

When I turn in slower I do not get the same feel (actually feels good) only on fast transistions. I got it a few times coming into the horseshoe (#5) at Barber and when I tried entering late into #1 at Putnam. I did not get it to much on the Chicane at Barber last time out but was seldom coming through clean with no traffic where I could really hit it fast.

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post #2 of 27 Old 11-25-2006, 9:51 PM
 
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Re: Front suspension question

Quote:
Originally Posted by sheepofblue View Post
When I toss the bike into a turn quickly it almost feels like the front end is coming up over a hump. I get the same thing on quick side to side transistions.

Is this:
Poor technique on my part causing it (if so be specific if possible so I can correct it)
To much preload
Not enough rebound damping
Too much preload is measurable by checking the sag.
What is your oil height set to?
What weight oil are you using?
If you don't have enough rebound damping the bike will "double pump" during quick transistions (possibly what you are alluding to ).

A combination of too much compression damping and too little rebound damping will definitely cause this effect, as will too heavy oil or too little oil.
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post #3 of 27 Old 11-25-2006, 10:02 PM Thread Starter
 
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Re: Front suspension question

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Originally Posted by abtech View Post
Too much preload is measurable by checking the sag.
What is your oil height set to?
What weight oil are you using?
If you don't have enough rebound damping the bike will "double pump" during quick transistions (possibly what you are alluding to ).

A combination of too much compression damping and too little rebound damping will definitely cause this effect, as will too heavy oil or too little oil.
Not positive but I believe they have Ohlins 5W not sure on height as it was filled by Thermosman. I get the same feel on my RR (stock front) almost like I was pulling up while tossing my weight back and topping the forks out. Thanks that will give me some start points

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post #4 of 27 Old 11-26-2006, 9:02 AM
 
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Re: Front suspension question

Quote:
Originally Posted by sheepofblue View Post
Not positive but I believe they have Ohlins 5W not sure on height as it was filled by Thermosman. I get the same feel on my RR (stock front) almost like I was pulling up while tossing my weight back and topping the forks out. Thanks that will give me some start points
If he used 5, that is the best fit for the RC forks. Since TM did them, I'm sure he has the oil height optimized. I would look at the ratio of compression to rebound. (Try a bit less compression and a bit more rebound as a starting point, but nothing drastic until you get a feel for the direction the changes are headed).
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post #5 of 27 Old 11-26-2006, 9:48 AM Thread Starter
 
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Re: Front suspension question

Quote:
Originally Posted by abtech View Post
If he used 5, that is the best fit for the RC forks. Since TM did them, I'm sure he has the oil height optimized. I would look at the ratio of compression to rebound. (Try a bit less compression and a bit more rebound as a starting point, but nothing drastic until you get a feel for the direction the changes are headed).
Thanks

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post #6 of 27 Old 11-26-2006, 11:56 AM
Yep...that would hurt ya!
 
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Re: Front suspension question

Quote:
Originally Posted by sheepofblue View Post
When I toss the bike into a turn quickly it almost feels like the front end is coming up over a hump. I get the same thing on quick side to side transistions.

Is this:
Poor technique on my part causing it (if so be specific if possible so I can correct it)
To much preload
Not enough rebound damping

When I turn in slower I do not get the same feel (actually feels good) only on fast transistions. I got it a few times coming into the horseshoe (#5) at Barber and when I tried entering late into #1 at Putnam. I did not get it to much on the Chicane at Barber last time out but was seldom coming through clean with no traffic where I could really hit it fast.
Piss poor technique.

"....and people in hell want ice water".
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post #7 of 27 Old 11-26-2006, 12:57 PM Thread Starter
 
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Re: Front suspension question

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Piss poor technique.
could easily be

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post #8 of 27 Old 11-26-2006, 1:23 PM
Yep...that would hurt ya!
 
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Re: Front suspension question

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could easily be
I'm just kidding my blue friend. If anyone has piss poor technique - It's me!

"....and people in hell want ice water".
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post #9 of 27 Old 11-26-2006, 1:44 PM Thread Starter
 
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Re: Front suspension question

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I'm just kidding my blue friend. If anyone has piss poor technique - It's me!
No worries I actually expected Abtech or someone to come back with a "Quit doing ...." comment more than suspension.

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post #10 of 27 Old 11-26-2006, 2:38 PM
 
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Re: Front suspension question

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No worries I actually expected Abtech or someone to come back with a "Quit doing ...." comment more than suspension.
Couldn't think of anything clever to say at the time, so I just posted some information instead . . .
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post #11 of 27 Old 11-26-2006, 3:04 PM Thread Starter
 
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Re: Front suspension question

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Originally Posted by abtech View Post
Couldn't think of anything clever to say at the time, so I just posted some information instead . . .
Clever was not necessary true would have worked I will get the RR out on warm days and play some this winter (slowly and out of the hills) with the suspension.

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post #12 of 27 Old 11-26-2006, 3:23 PM
 
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Re: Front suspension question

I will say that while following you at Barber, I didn't really see you use sudden or forceful steering input at turn 5.. if anything, you apexed early and gradually.

Do you think this sensation could be the result of coming off the brake less-than-gradually after turn-in? That results in the front popping up a bit, and could have led to your running a bit wide a few times through there.

Overall, I'd be happier if you got off the bike more and relaxed more on the bars.

Are you going to take a track school this year?
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post #13 of 27 Old 11-26-2006, 3:43 PM
 
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Re: Front suspension question

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Overall, I'd be happier if you got off the bike more and relaxed more on the bars.
Not that I'm any better at it.
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post #14 of 27 Old 11-26-2006, 3:46 PM
 
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Re: Front suspension question

Well, as a matter of compensation, I'd have to say you're pretty damned relaxed IN the bars..


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post #15 of 27 Old 11-26-2006, 3:55 PM Thread Starter
 
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Re: Front suspension question

Quote:
Originally Posted by CBRVFR View Post
I will say that while following you at Barber, I didn't really see you use sudden or forceful steering input at turn 5.. if anything, you apexed early and gradually.

Do you think this sensation could be the result of coming off the brake less-than-gradually after turn-in? That results in the front popping up a bit, and could have led to your running a bit wide a few times through there.

Overall, I'd be happier if you got off the bike more and relaxed more on the bars.

Are you going to take a track school this year?
That is because the front does it's trick if I flop in hard (or feels like it). I am highly considering a school just trying to decide which one(s). With the Ed Bargy one being a likely start as it is close a great price and most spoke well of it.

I will say I doubt it is brakes as it happens when I tug the bars I did get some things to think on.

Yep the wool needs to loose some seat adhesion I am out of tire with the 180 rear I got on now. The goal this winter is to increase flexibility and increased sheep to tank clearance

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