Keeping my arse end on the ground

[sinfull]

Yeah im doing some reading about this now. No harm in trying it I guess. Though can't get my head around how it would stop the rear coming up, especially since it's not bottoming out as it is. I think it's more to do with cornering than actually braking from what I can see.

Good link to that suspension set up from whoever that was, cheers.

No way i could see RT letting the bike leave his place with a soft front end (comp damping) But could see him letting it leave with a little too much rear rebound for the hard braking ya doing (sounds like race track braking which he wouldn't have set it for), i found the same thing on the track, front was fine but because i was so hard on the front brakes, the rear was not rebounding quick enough to keep traction and skitting all over the place ! Felt like i was doing stoppies every tight corner

But then who knows, it could be in the front

[racefactory]

It doesn't have to be bottoming.... just compressing too fast will have the same affect

could well be that then. Will try 1/4 turn out from full compression tomorrow.

[racefactory]

No way i could see RT letting the bike leave his place with a soft front end (comp damping) But could see him letting it leave with a little too much rear rebound for the hard braking ya doing (sounds like race track braking which he wouldn't have set it for), i found the same thing on the track, front was fine but because i was so hard on the front brakes, the rear was not rebounding quick enough to keep traction and skitting all over the place ! Felt like i was doing stoppies every tight corner

Yeah that's what it feels like mate.

rear shock rebounding too slowly in comparison with front compression speed would leave it in the air i suppose?

[Pussy]

Even a slightly too low oil level can do it.
I would suggest a talk to RT, and see what was done. You'll get hold of him at CKT tomorrow

[Pussy]

The fact that you have the comp adjusted almost right in makes me think the actual valve shimming spec may be a bit soft

[racefactory]

it's just the stock setting these bikes come with from factory though, almost right in in first place. I'll wind it up anyway tomorrow hopefully it does the trick.

mate does your gsxr750 require a lot of force ie. near locking point, before the rear wheel comes up?

[sinfull]

The fact that you have the comp adjusted almost right in makes me think the actual valve shimming spec may be a bit soft

That fact has me wondering if it aint too hard John, in which case wouldnt it create a lot of wieght transferring to the front and causing stoppies, might be that the comp too hard now ? winding it in further could make it worse !
OP says the sags are correct, which robert would have set for him, but still has an inch of travel left after hard braking, the zip tie be a good idea i recon to be sure

Still thinking rear rebound though

[Pussy]

mate does your gsxr750 require a lot of force ie. near locking point, before the rear wheel comes up?

Yes!
Although I can't fault the front end (or the rear, for that matter!).
I am fortunate to have Ohlins FGK cartridges in my forks. There has been a bit of experimenting gone on with valving specs in them.

[racefactory]

That fact has me wondering if it aint too hard John, in which case wouldnt it create a lot of wieght transferring to the front and causing stoppies, might be that the comp too hard now ? winding it in further could make it worse !
OP says the sags are correct, which robert would have set for him, but still has an inch of travel left after hard braking, the zip tie be a good idea i recon to be sure

Still thinking rear rebound though

The only reason i know there is near an inch remaining is because i use zip ties.

[Pussy]

That fact has me wondering if it aint too hard John, in which case wouldnt it create a lot of wieght transferring to the front and causing stoppies, might be that the comp too hard now ? winding it in further could make it worse !
OP says the sags are correct, which robert would have set for him, but still has an inch of travel left after hard braking, the zip tie be a good idea i recon to be sure

Still thinking rear rebound though

I hear you, Bill. But!.... the front pitching down too fast has the effect of transferring weight forward, too

[SPP]

Fishy

Could it possibly be that it's either a) diving too quick? or b) not diving enough?

I found that when the front was too soft it would dive fast and the rear would lift when braking very hard. When the front was too hard, braking distance got longer (because front tyre not getting compressed enough?) so I'd clamp the brakes harder causing the rear to lift slightly and the rear tyre to skim.

This may be a bit off but what about trying to soften the front just a touch (go out another 1/4 - 1/2 turn)

OEM is 1.5 turns out (from full hard) on a 06 636 I think. 1/4 turn out (from for hard) for bumpy roads sounds excessive but try it I suppose

[p.dath]

There's a theory that says in an emergancy braking situation you should initiate the braking action with the rear brake. It causes the rear to squat down somewhat thereby adding to the power imparted on the front.

+1. Check out my BLOG on emergency braking.
http://www.kiwibiker.co.nz/forums/en...rgency-Braking

I'd be tempted to talk to someone about your suspension, and make sure it is set appropriately for what you are wanting to get out of your bike.

[Nonbeliever]

front compression too soft
rear rebounding too quick
too low oil height in fork

or a combination of these

[schrodingers cat]

Of course the machine is the problem - change everything. Put the back wheel on the front and the front of the back.

Your brake application rate will be perfect and you are moving you weight rearward during braking to compensate for the load transfer aren't you?

But, of course its the machine...

[racefactory]

Of course the machine is the problem - change everything. Put the back wheel on the front and the front of the back.

Your brake application rate will be perfect and you are moving you weight rearward during braking to compensate for the load transfer aren't you?

But, of course its the machine...

Don't have to be a smart arse mate- definitely could be me... question for you on your high horse then, how do I stop it coming up under hard braking given everything i've already mentioned?

Weight is off of the bars going into the tank, body back, hitting rear brake first.