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Fitting a so called 'ABS' brake lever/master

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Sean.S
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Joined: 20 May 2015
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PostPosted: 23:58 - 28 Dec 2015    Post subject: Fitting a so called 'ABS' brake lever/master Reply with quote

Okay so i need to pick your brains again with another noob question. A master cylinder/brake lever i want to buy is listed on ebay as an ABS lever. My questions are;

-can this be used with a brake thats not ABS?

-is the ABS even operated by the lever?


here is the lever in question
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Ichy
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Joined: 15 Jul 2005
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PostPosted: 00:10 - 29 Dec 2015    Post subject: Reply with quote

Maybe the master cylinder is different on ABS?

What bike is it for?
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Sean.S
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PostPosted: 00:25 - 29 Dec 2015    Post subject: Reply with quote

Ichy wrote:
Maybe the master cylinder is different on ABS?

What bike is it for?


i dont know but hopefully im about to find out Razz if so, then would adding this master cylinder to an older bike, convert its front brake to ABS?

the unit is from a 2013 honda cb500, and would be fitted to a 90s honda crm250

sean
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Albigularis
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PostPosted: 00:34 - 29 Dec 2015    Post subject: Reply with quote

Usually the ABS unit is a servo which is connected along the lines of the brakes. Certainly on the Multistrada and my R1200GS, the master cylinders were as normal, and the servo is about half way down the brake lines.

Here's an idea of how it works sorta, although its a fairly complex diagram for what its showing-

https://www.motorcycleinfo.co.uk/resources/6795/assets/images/BMW%20R1200GS/hari/GS_models/bmw_r1200gs_abs_2007.jpg

To have ABS, you need wheel speed sensors on the wheels, a sensor connected to the ECU and a pump to loosen the brakes off when you slam them on too hard. Perhaps it just has ABS in the title because it fits an ABS bike?
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Sean.S
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PostPosted: 00:41 - 29 Dec 2015    Post subject: Reply with quote

@Albigularis: thanks for that, youve explained everything i needed to know

Sean
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wr6133
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Joined: 31 Dec 2013
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PostPosted: 06:16 - 29 Dec 2015    Post subject: Reply with quote

Sean91 wrote:
then would adding this master cylinder to an older bike, convert its front brake to ABS?


https://i1249.photobucket.com/albums/hh504/wr6133/Third-party-facepalm.jpg
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Sean.S
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PostPosted: 07:48 - 29 Dec 2015    Post subject: Reply with quote

Yes alright thank you Rolling Eyes

i am still learning about bikes and mechanics and there are things i still dont know about, but i do realise now what a dumb question that was. Nevermind
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Stalk
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Joined: 26 Dec 2005
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PostPosted: 09:24 - 29 Dec 2015    Post subject: Reply with quote

We all ask questions, that's how we learn. Keep asking! Dumb would have been fitting the part and then coming on her saying "Please help, Abs not working"
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weasley
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Joined: 16 Oct 2010
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PostPosted: 09:28 - 29 Dec 2015    Post subject: Reply with quote

I guess I agree with the the sentiment, but I am a bit alarmed that someone without even a basic grasp of brake functionality is contemplating the replacement of a master cylinder. Brakes are one of the systems where 'trial and error' is not a practical learning strategy.
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Sean.S
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PostPosted: 10:45 - 29 Dec 2015    Post subject: Reply with quote

I could install and bleed basic brakes competently, but no i didn't understand how abs works. Ive never come across it before, so havent needed to know

Thanks for the responses
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MCN
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Joined: 22 Jul 2015
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PostPosted: 14:53 - 30 Dec 2015    Post subject: Reply with quote

Albigularis wrote:
Usually the ABS unit is a servo which is connected along the lines of the brakes. Certainly on the Multistrada and my R1200GS, the master cylinders were as normal, and the servo is about half way down the brake lines.

Here's an idea of how it works sorta, although its a fairly complex diagram for what its showing-

https://www.motorcycleinfo.co.uk/resources/6795/assets/images/BMW%20R1200GS/hari/GS_models/bmw_r1200gs_abs_2007.jpg

To have ABS, you need wheel speed sensors on the wheels, a sensor connected to the ECU and a pump to loosen the brakes off when you slam them on too hard. Perhaps it just has ABS in the title because it fits an ABS bike?


The pump is the 'actuator' part which puts the brake on.
There are valves which open (when the ABS control dictates via sensor inputs) to release the fluid pressure and the braking effect is lost.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.
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