Eleven rear wheel lock up

[Peter Yeomans]

Greetings all-

I finally purchased a new set of cast iron rotors from Mike Brotherwood for S1 Eleven and when I tried them several weeks back I experienced substantial rear wheel lock up/noise etc-during the meeting -I kept shifting bias on the brake bias bar and whist it improved it substantially I was not able to achieve the same level of smoothness as previously- I am using Carbotech Panther Plus 1108 which are a grade up over my previous pads –I have been using the CPP1108 front and rear for about 2 years without any problem on the steel rotors-has anyone used the Carbotech pads or experience with this issue please

Thanks Peter Yeomans

 Australia

Ps yes it is true what the various articles say- cast iron retards/pulls up much better than steel!

[John W. Watson.]

Dear Peter,

 

I think you have probably answered your own question!

 

Regards,

 

JWW

[Jeff Snook]

I have run Carbotech Panther "CTGD-AX6" pads on my S1 for years and have never had a lock-up problem.

 

Jeff Snook

http://www.snooksdreamcars.com

 

From: Lotus-...@googlegroups.com [mailto:Lotus-...@googlegroups.com] On Behalf Of Peter Yeomans
Sent: Thursday, August 13, 2009 4:03 AM
To: Lotus-...@googlegroups.com
Subject: Eleven rear wheel lock up

 

Greetings all-

 

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[John W. Watson.]

Jeff, Are your discs (rotors) steel or cast iron?

 

JWW

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[Lyndsay Wood]

Hello All,

Several years ago we went through a fad in the light earoplane industry: Everyone wanted Stainless discs, which are very simple 'bolt-on' modifications. Real easy to do. As quickly we discovered that we could not just change the discs as advertised, we had to also change the pads, or linings as we call them. Moral of the story: Each disc or drum has a corresponding retard material which will give you the best stopping combination. Essentially the harder the disc is, the relatively softer the linings need to be. The other issue we found on the heavier 'light planes' is that the stainless discs did not dissapate the heat as well as the steel discs did, and therefore gave much poorer brake action when really hot, usually into small fields when braking action is critical.

But why do you want strong brakes, they only make you go slow!!! ; - )

WarmRegards
Lyndsay

--- On Thu, 13/8/09, John W. Watson. <j...@onetel.com> wrote:

[Peter Yeomans]

John and Jeff thanks for feed back-

 firstly re John’s comments- what has me concerned re the balance bar is that I am  now virtually at the maximum of adjustment never experiencing the issue previously-

re Jeffs comments I am using a higher retarding pad this time having changed from the type you have mentioned-

-I am also waiting feedback from Carbotech as I believe a Lotus 15 had the same problem some years back which was resolved by using the lower grade in the rear as these carbon ceramic type of pads are just a bit too strong for light cars.

Peter

[Christopher J Tchorznicki]

I use KFPR5504/5 pads on all the XI’s that I look after, they work well.

chris

[Gearhead]

For the last 3 years I have been running

rear KFP 5505-P42A
front KFP 5504-P42A

pads that I get from Truechoice (http://www.truechoice.com) in Ohio.

The backing plates are a shiny gold color. They are easy to bed, stop
well, and are easy on my old chrome-plated steel rotors that came with
the car. We have to run Dunlop 204s so the braking limitation is the
tire. The brake balance bar is set pretty close to the center.

Glenn

On Aug 13, 2:52 pm, "Christopher J Tchorznicki"

> Panther Plus 1108 which are a grade up over my previous pads -I have been