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Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

Thread: suspension or riding technique? Reply to Thread
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  Topic Review (Newest First)
09-12-2005 11:22 AM
02FBlade
Re: suspension or riding technique?

Slippers are awesome! Especially t13 at Barber!

To clarify on the rebound...Again most of the rear hop is the rider and rev matching/timing of the downshifts. The effect of slow rebound is due to the rear raising off the ground during hard braking....if the rebound is too slow the rear can't drop down fast enough (to stay on the pavement) and can cause some hoping. It's really only going to happen on the track during extreme braking.
09-11-2005 7:57 PM
CBR929RE
Re: suspension or riding technique?

racers get that back end wiggling all the time. depends on the person, some of them its just part of their style. But listen to Proto as far as speed and braking on the streets.

Erion has a slipper clutch for the 929, its $9xx.
09-11-2005 6:24 PM
Proto
Re: suspension or riding technique?

Hmmmmmm. Just to throw a spanner in the works, some of the very fastest road riders I know will tell you that if you are doing heavy braking or violent engine braking by down shifting when road riding, then you're either going too fast for the conditions or you just haven't planned ahead very well. Watch an expert rider and you'll hardly ever see their brake lights flicker, nor the back end kick out when down shifting. Not - "felt like the back tire skipped a little as I entered the curve", do your speed correction on the straight bits.

Approaching a corner, correct gear, roll off to reduce speed, enter the turn and pick up the throttle again. Nice and smooth. no brakes needed at all. Unless you're racing on the road.
09-11-2005 5:57 PM
Spanky
Re: suspension or riding technique?

Hmmmm...hadn't spent too long thinkin' about rebound damping as a fix (or at least part of a fix), maybe I'll have a play with that next time I'm out - like I said earlier, when I get the weave on I usually just blame myself and try to smooth things out at the next corner...assuming I make this one of course !
09-09-2005 6:40 PM
abtech
Re: suspension or riding technique?

Quote:
Originally Posted by 02FBlade
It's you. I use to do that because I wasn't blipp'n or rev'n it high enough. Too slow of rebound on the shock will effect the rear under hard braking...but being smooth will solve 90% of most problems.

Something to think about is using the front brakes...If you never brake hard you're not really getting all the heat in the front tire you can. I see this on twins where people 'engine brake'. they bitch about the front sliding/pushing. When they start braking correctly they get more heat in the front, therefore more grip...sliding/pushing stops.
Good comments! Engine braking is for cruisers.
09-09-2005 4:38 PM
02FBlade
Re: suspension or riding technique?

It's you. I use to do that because I wasn't blipp'n or rev'n it high enough. Too slow of rebound on the shock will effect the rear under hard braking...but being smooth will solve 90% of most problems.

Something to think about is using the front brakes...If you never brake hard you're not really getting all the heat in the front tire you can. I see this on twins where people 'engine brake'. they bitch about the front sliding/pushing. When they start braking correctly they get more heat in the front, therefore more grip...sliding/pushing stops.
09-09-2005 4:29 PM
fst929
Re: suspension or riding technique?

Quote:
Originally Posted by Spanky
Hi xxshawnxx,

I What is the situation you're in when you experience the swaying ? - is it similar to what I described or does it happen at a different time - like when you're upright (and braking ?) before leaning into a corner ?

I guess, if you haven't done it already, you might want to check your suspension sag front and back to make sure the bike is set-up and balanced for you - if you've got too much weight on the front (and therefore not enough on the rear) because of excessive sag up front then the back-end will be pretty light under braking and likely to misbehave when provoked (like when you dump it down a gear leaned over entering a corner )...I know this is my problem because my financial controller (read : Wife) wont give me the money for a fork spring upgrade !

Cheers Spanky.
+1.....too soft front tends to cause the back end to wallow side to side under heavy braking.
09-06-2005 5:49 PM
Spanky
Re: suspension or riding technique?

Quote:
Originally Posted by xxshawnxx
spanky so you are saying that the swaying can be elimnated by the slipper clutch? how much would a slipper cost?
Hi xxshawnxx,

I reckon the slipper would certainly help, but if you tried hard enough I think you'd probably still have problems...I don't know what a slipper clutch is worth, or even if there is a unit available for a 929 (there probably is somewhere) but I'm sure it'd be expensive Better to work on the down-shifting technique and avoid the problem from the get-go.

What is the situation you're in when you experience the swaying ? - is it similar to what I described or does it happen at a different time - like when you're upright (and braking ?) before leaning into a corner ?

I guess, if you haven't done it already, you might want to check your suspension sag front and back to make sure the bike is set-up and balanced for you - if you've got too much weight on the front (and therefore not enough on the rear) because of excessive sag up front then the back-end will be pretty light under braking and likely to misbehave when provoked (like when you dump it down a gear leaned over entering a corner )...I know this is my problem because my financial controller (read : Wife) wont give me the money for a fork spring upgrade !

Cheers Spanky.
09-06-2005 2:21 PM
xxshawnxx
Re: suspension or riding technique?

spanky so you are saying that the swaying can be elimnated by the slipper clutch? how much would a slipper cost?

ive never experienced actual tire chirrping just a lot of swaying
09-06-2005 2:21 PM
xxshawnxx
Re: suspension or riding technique?

spanky so you are saying that the swaying can be elimnated by the slipper clutch? how much would a slipper cost?

ive
09-06-2005 12:36 AM
Spanky
Re: suspension or riding technique?

Hi xxshawnxx,

that's the sort of thing I'm talking about - I've never heard my rear tyre chirrup, more felt it weave/sway about a bit straight after I let the clutch out when dropping it down a gear on the way into a corner...

It's just one of those things - if you're cranked over pushing the bike into a corner on the brakes, and drop down a gear (and make the revs jump up high enough), from time to time the rear tyre will struggle to retain it's hold on the road and start to slide around a little - not to be encouraged, but not a massive problem either...

This is what they developed slipper clutches for, they deal with this problem by limiting the initial bite (or back torque) of engine braking...just a shame the 929 didn't come with one .

Cheers, Spanky.
09-05-2005 11:36 PM
xxshawnxx
Re: suspension or riding technique?

ok same type of question only a little different. what if the rear end sways from downshifiting at high speeds sort of like a flowing motion back and forth? technique or suspension or just the power of downshifting from hish speed?
09-04-2005 11:52 PM
Spanky
Re: suspension or riding technique?

Hey Lay3r3,

I wouldn't panic too much, my rear tyre gets a bit excited on entering a corner if I'm on the brakes and drop it down a cog too - even though I blip the throttle to match the engine revs to ground speed, sometimes if its a sudden down-change the back end of my 929 can get a bit loose and weave around momentarily.

...but I know it's my fault and nothing to do with suspension set-up - I just take a deep breath and make sure I do it smoother at the next corner.

Cheers, Spanky.
09-04-2005 9:59 PM
BDA116
Re: suspension or riding technique?

The bike has two big rotors out front for a reason. Using your engine to brake is putting unnecessary extra wear on it.
09-04-2005 9:09 PM
Nickelii
Re: suspension or riding technique?

Sounds like a little chatter to me. Get your down shifting/braking done before you enter the corner. Also listen to everyone else on blipping the throttle.
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