RE: Brake de-link help

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RE: Brake de-link help

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RE: Brake de-link help - 10/11/2008 1:57:25 AM

cbroar

Posts: 82
Joined: 4/8/2005
Status: offline

Gonna have a shot at delinking the brakes too. Can anyone tell me what length the new hoses should be and a template for the brackets would also help.

(in reply to Trips)

Post #: 16

RE: Brake de-link help - 10/14/2008 4:20:52 AM

Dean0

Posts: 107
Joined: 9/22/2006
From: Preston, UK
Status: offline

quote:

ORIGINAL: cbroar

Gonna have a shot at delinking the brakes too. Can anyone tell me what length the new hoses should be and a template for the brackets would also help.

Not sure about line length but if you get the three line kit for a 90/91 CBR1000f ( Pre-CBS ) you will have the correct hose lengths.

(in reply to cbroar)

Post #: 17

RE: Brake de-link help - 10/14/2008 12:47:47 PM

SoloRider

Posts: 30
Joined: 3/13/2008
From: Sacramento, CA, USA
Status: offline

I looked at Spiegler and they list 87-88 and 89-, and I''m not sure that means 89-91. They have a 2-line kit that I''ve liked on other bikes. Any thoughts on the 89 and 90-91 compatibility?

For the brackets TimBucTwo''s procedure sounds simple and doable.

quote:

ORIGINAL: Dean0

quote:

ORIGINAL: cbroar

Gonna have a shot at delinking the brakes too. Can anyone tell me what length the new hoses should be and a template for the brackets would also help.

Not sure about line length but if you get the three line kit for a 90/91 CBR1000f ( Pre-CBS ) you will have the correct hose lengths.

_____________________________

1993 CBR1000F

(in reply to Dean0)

Post #: 18

RE: Brake de-link help - 10/14/2008 1:53:34 PM

Dean0

Posts: 107
Joined: 9/22/2006
From: Preston, UK
Status: offline

quote:

ORIGINAL: SoloRider

I looked at Spiegler and they list 87-88 and 89-, and I''''m not sure that means 89-91. They have a 2-line kit that I''''ve liked on other bikes. Any thoughts on the 89 and 90-91 compatibility?

In the UK the 89 to early 92 bikes were all the same - wider wheels but not yet CBS equipped.

I think it was the FK, FL and FM models

HEL lines are the ones I used on my 1990 bike (non CBS)

I found the best kit had two full length lines from a double banjo at the master cylinder to the calipers and a single rear line.

(in reply to SoloRider)

Post #: 19

RE: Brake de-link help - 10/14/2008 4:25:39 PM

SoloRider

Posts: 30
Joined: 3/13/2008
From: Sacramento, CA, USA
Status: offline

Hel USA went out of business a while ago at least the importer of Hel. But it looks like the UK site will ship international for a reasonable price. Only thing is the shipping time. I wanted to make sure most of the caliper work was done before I spent the money on the brake lines. Who knows what might go wrong, or I might screw up. I might have to buy long before I wanted so I''m not held up by the lines when I''m done. Cold weather is coming fast. At least Hel has a good reputation so I''m willing to spend the money.

I never used a rear SS line. Do you think it helped?

quote:

ORIGINAL: Dean0

quote:

ORIGINAL: SoloRider

I looked at Spiegler and they list 87-88 and 89-, and I''''''''m not sure that means 89-91. They have a 2-line kit that I''''''''ve liked on other bikes. Any thoughts on the 89 and 90-91 compatibility?

In the UK the 89 to early 92 bikes were all the same - wider wheels but not yet CBS equipped.

I think it was the FK, FL and FM models

HEL lines are the ones I used on my 1990 bike (non CBS)

I found the best kit had two full length lines from a double banjo at the master cylinder to the calipers and a single rear line.

_____________________________

1993 CBR1000F

(in reply to Dean0)

Post #: 20

RE: Brake de-link help - 10/14/2008 9:24:06 PM

Shadow

Posts: 3630
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline

If you''re de-linking the brakes, DON''T run a s/s line to the rear.
The brake will lock up really quickly and you could lose control.

(in reply to SoloRider)

Post #: 21

RE: Brake de-link help - 10/15/2008 1:03:12 AM

Dean0

Posts: 107
Joined: 9/22/2006
From: Preston, UK
Status: offline

quote:

ORIGINAL: SoloRider

Hel USA went out of business a while ago at least the importer of Hel. But it looks like the UK site will ship international for a reasonable price. Only thing is the shipping time. I wanted to make sure most of the caliper work was done before I spent the money on the brake lines. Who knows what might go wrong, or I might screw up. I might have to buy long before I wanted so I''''m not held up by the lines when I''''m done. Cold weather is coming fast. At least Hel has a good reputation so I''''m willing to spend the money.

I never used a rear SS line. Do you think it helped?

Mine was a Pre-CBS bike but NO - I never had an issue with the SS rear line.

A mate of mine with a CBS bike has it de-linked and found the rear end too much with all three pistons connected.
He ended up only using the front and rear pistons in the rear caliper and leaving the centre piston doing nothing.

Your alternative is to look out for the rear caliper and carrier bracket off an FK,FL or FM model bike

When I decide to mod my Blackbird - I''m going to stay with the CBS for now and just put SS lines up front where they will be felt.

I do agree with Shadow1 in part - There is less margin for error when running an SS line in the rear.

(in reply to SoloRider)

Post #: 22

RE: Brake de-link help - 10/15/2008 1:42:37 AM

Bazman

Posts: 70
Joined: 1/17/2008
From: Napier, New Zealand.
Status: offline

Hi Deano,

My bike has been de-linked. It has s/s on the front ( one to each caliper ) and the rear has all 3 pistons used. I thought it seemed a bit of an overkill...

I''m a bit worried now as per your mates bike. Lol... Don''t wanna lock up on her maiden voyage in a few weeks.....

I''ll have to let ya know how it goes.....

(in reply to Dean0)

Post #: 23

RE: Brake de-link help - 10/15/2008 2:39:32 AM

Shadow

Posts: 3630
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline

I''ve locked my rear up many times under heavy braking (1990 model) -with standard brake pipes.
The steel ones don''t expand at all, so the braking effect is a lot more immediate and noticeable.
Deano certainly knows his stuff - but for me, I''d leave the rear alone and do stainless to the front. Just my 2c

(in reply to Bazman)

Post #: 24

RE: Brake de-link help - 10/15/2008 12:14:18 PM

Dean0

Posts: 107
Joined: 9/22/2006
From: Preston, UK
Status: offline

I did some ratio calculations for the master cylinder to caliper and the numbers explain the problem.

Standard front master cylinder to CBS front caliper = 15.7:1 ratio

Master cylinder to de-linked front caliper using all three pistons = 23.3:1

Result = more lever travel but silly sensitive brakes and so easy to lock up.

Cure = 14mm master cylinder from CB1300 to correct the ratio.

Rear is the same - ratio goes silly when you link all three pistons and it is easy to lock up but pedal
travel is increased so the braking feels un natural.

Hope this helps

(in reply to Shadow)

Post #: 25

RE: Brake de-link help - 10/25/2008 10:00:01 PM

streetfighter xx

Posts: 1
Joined: 10/25/2008
Status: offline

I have a 97 cbr 1100 xx blackbird that I am trying to delink the brakes. I am making the bike in to a street fighter. If any one can help me delink them I would love to know. I would love to do some standing burnouts or stopies but not realy possible with the L B S system on board my bike.

(in reply to Dean0)

Post #: 26

RE: Brake de-link help - 10/26/2008 12:27:28 PM

Dean0

Posts: 107
Joined: 9/22/2006
From: Preston, UK
Status: offline

quote:

ORIGINAL: streetfighter xx

I have a 97 cbr 1100 xx blackbird that I am trying to delink the brakes. I am making the bike in to a street fighter. If any one can help me delink them I would love to know. I would love to do some standing burnouts or stopies but not realy possible with the L B S system on board my bike.

Have a look on the JAWS website. He has a full de-link kit available ( Set of stainless lines and a slave cylinder replacement bracket )

If you want very powerfull brakes - just link all three pistons in the front calipers. If you want about the same feel to the brakes but without the CBS then you also need a 14mm master cylinder up front.

For the back end - I would only link the front and rear pistons to the pedal - not all three.

(in reply to streetfighter xx)

Post #: 27