Brake Lock-ups

[Bird Info guy]

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[FreeBird]

I have had this happen

But only when breaking V-hard over bumpy ground which is to be expected I guess c7u8

 

[gypsy]

brakes

recently one of our members had a problem with the brakes grabbing and staying on and the cause was discovered to be a bad batch of brake pads that had the wrong shaped hole where the brake pin slides through. It had the effect of twisting the pads when the brakes were applied and being unable to return back to normal

 

[Amsterdam]

It's bound to happen !!

Take the most extreme example - a stoppie - do you really think the back wheel won't lock up on a bike with LBS ??

Under heavy front braking the back is light, on an unlinked bike you'd never even think to apply the rear in this situation - we've got no choice - so it's bound to lock up :xm

It's not a problem it's a characteristic. c7u8

Amsters

 

[RHINO]

CLIVE

I recently posted a bit about my terror ride on the Cat & Fiddle where i was carrying tooooo much speed towards a corner following an overtaking moment. I passed an Audi TT with a fistfull of revs and then saw the error of my ways and grabbed a handfull of front brake only to lose some momentum when like a flash the rear wheel locked and flung the BB sideways one way and then the other. If i had any less experience i feel i'd have panicked and bailed off,,, more experience and i would never have been in that situation!
I don't feel the bike to be at fault but i blame it on the nut that holds the seat to the bars!!!!
Under the excess braking the rear is slowing due to the link and its also getting light due to weight transfer. I used to use this in stock cars for 7 years on aproach to the corners,, big stamp on the brakes to break the back out and then a bigger stamp on the loud pedal to make the bugger stay out.
Laws of physics really :bow:

 

[D.S.]

But only when breaking V-hard over bumpy ground which is to be expected I guess c7u8

why expected? If the suspesion is set up properly, this shouldn't happen, though the totaly non-adjustable front isn't conducive to getting it spot on!

 

[FreeBird]

Just to clarify,

why expected? If the suspesion is set up properly, this shouldn't happen, though the totaly non-adjustable front isn't conducive to getting it spot on!

This has only really happened on one stretch of road which is ridiculously bad. So bad in fact that I would not expect any suspension to soak it up, :violin: That and the fact that I have not got the biking experience to know how best to set it up. :bang:

 

[dpbxx]

Linked brakes again

We all realise that in track mode linked brakes are not the best solution, however our bikes are not usually in track mode, or are they?

It seems to me that 'heavy braking into a corner, carrying too much speed' 'stoppies' and having to 'stomp a wodge' of back brake is not exactly road riding

I mostly try to ride as sensibly as I can. At those times the Bird behaves impeccably. If I try to 'push it' it sometimes pushes back. I think that in all cases where back wheel lockup has been experienced the rider has been 'pushing it'.

And theres nowt wrong with that at the right time in the right place R#?

 

[D.S.]

This has only really happened on one stretch of road which is ridiculously bad. So bad in fact that I would not expect any suspension to soak it up, :violin: That and the fact that I have not got the biking experience to know how best to set it up. :bang:

Top man. You must have some bollox to take the Bird MotoX :}

 

[frenchuk]

I refer you to this post re. linked brakes
http://www.bikersoracle.com/blackbird/forum/showthread.php?t=11916

 

[Wolfie]

I have clive.

I very rarely use the brake pedal (due to lack of adjustment, and restricted movement in ankles) in fact only time i can remember using it is when i shit myself and stamp on everything.

 

[richard]

I tell ya fully loaded with lindz fat arce on the back you have no choice but to use both breaks its like stopping a fookin train from warp speed.


R

:violin: :violin: :violin:

 

[Grey Wolf]

Wow

Richard you brave man
When lindz reads your last post I bet you'll be F***ED or not as the case may be

 

[Jon and Anya]

Clive,

I managed to lock the front wheel on the way to Duxford. I was a little too busy to tell you if the rear locked as well as it was begining to wash out so off the brakes and turn and pray.

This was fully loaded on the way home. Not sure if this is a characteristic or not but it was entertaining - - - - afterwards

 

[Stuey]

PCV

I would have said (although I reserve the right to be wrong) that if the rear locks up when only the front lever is squeezed, that the PCV is probably at fault or sticking, this is why Honda fit one to the system is it not? :dunno:

Stuey

 

[Bruce H]

I agree with Amsterdam. In one year and 12k miles of quite quick riding I am still exploring the braking. I haven't had the rear lock for more than an instant (with CBS and just the front lever) but feel that if it did then I would past the safe braking limit and in stunt mode, which I am not ready to explore yet!

 

[skippy]

Have never locked the front since I've had the Bird but mine (and some others apparantly) have displayed an annoying tendancy to lockup the rear wheel under certain conditions without touching the rear pedal.

I initially thought I had a problem with my brakes but after looking around a bit it appears that others too have had this happen and I have just come accross a little snippet in the used bike guide that says that with the '99 FI model the CBS was modified for this very reason.
Looks like I've either still got the old CBS or the fix was not entirely successfull. :xm

 

[Jaws]

I would be VERY pissed off if I grabbed a large handful of front brake and the back wheel did not lock up.. With all the weight taken off the back and the brake being applied what else should one expect to happen ?
Am I am being thick here and missing something

 

[linzi]

I tell ya fully loaded with lindz fat arce on the back QUOTE]

You don't deserve her Richard. That is sooo unkind of you. :t

And....either brave or stoopid. She is a lovely lass.

PM sent....

Thank you Lumpy for pointing these comments out for me

Ohhhhhhhhhhhhhh dear

8ree! I feel a frosty weekend coming on

 

[skippy]

I would be VERY pissed off if I grabbed a large handful of front brake and the back wheel did not lock up.. With all the weight taken off the back and the brake being applied what else should one expect to happen ?
Am I am being thick here and missing something

I would expect Honda to have enough design expertise to proportion the braking bias correctly to avoid that from happening,
the technology to get this right has been with us for decades mate, it really is not acceptable in this day and age to put up with such a mediocre design.