Author Topic: Shimano Brake Cable Pull  (Read 543 times)

Feanor

  • It's mostly downhill from here.
Shimano Brake Cable Pull
« on: June 17, 2020, 03:13:14 pm »
Hi,

On one of my bikes, the brakes feel very wooden.
I think I know why: the levers are ST-6700 series, which AIUI use the newer cable pull ( I've seen it called Servo Wave on a US forum ), but the brakes are the previous generation BR-6600 which uses the old cable pull.  This is known to give a wooden feeling to the brakes, from what Googling I've done.

I'm minded to transplant the 6600 calipers onto my commuter bike which is in need of some work, and get new ones with the correct cable pull to match the 6700 shifters.

My question is this:
Are current models still the same as the 'new' standard which I have on the 6700 levers?
Or has it changed again in the meantime?

zigzag

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Re: Shimano Brake Cable Pull
« Reply #1 on: June 17, 2020, 04:24:53 pm »
yes, still the same, slr-ev or sometimes called new super slr.

Re: Shimano Brake Cable Pull
« Reply #2 on: June 17, 2020, 04:47:05 pm »
yes, still the same, slr-ev or sometimes called new super slr.

New super slr as compared to super slr...

If you didn’t know better you might think it was intended to confuse

Re: Shimano Brake Cable Pull
« Reply #3 on: June 17, 2020, 05:09:41 pm »
Servo Wave is a hydraulic brake thing, so you can ignore that.

You can find a list of all the brakes compatible with your levers here:
https://productinfo.shimano.com/#/com?cid=C-453&acid=C-456

Re: Shimano Brake Cable Pull
« Reply #4 on: June 17, 2020, 06:20:57 pm »
the brake cable pull was called 'New Super SLR'  (NSSLR) when it came out. It was new in 2008 and since then there has only been one STI model without it introduced.   Since then everyone (including shimano) has called it more or less anything else they feel like and it has just caused a lot of confusion. So you will hear talk of SLR, Super SLR (even from shimano, who already used those terms for something different about 20 years earlier) and the latest is SLR-EV.   They all mean (brake lever-wise) NSSLR, which is about +25% brake cable pull and of course only works properly with ~ +25% MA in the brake calipers.

It is a proper PITA because older DP brake calipers don't work properly with NSSLR levers. Some aftermarket levers and calipers are NSSLR compatible but this isn't always clear. In any event there is still a +/- variation in any one caliper depending on how high the brake blocks are set in the slots.

So yes 6600 calipers are 'old' DP type and you would be better off with NSSLR-compatible calipers. If looking at shimano calipers their compatibility charts ought to guide you.

cheers

Feanor

  • It's mostly downhill from here.
Re: Shimano Brake Cable Pull
« Reply #5 on: June 17, 2020, 09:51:21 pm »
Thanks all.

Quote
You can find a list of all the brakes compatible with your levers here:
https://productinfo.shimano.com/#/com?cid=C-453&acid=C-456

I don't understand what the significance of the brown text versus the black text is.
It does not seem to be explained on that page.
Can anyone advise?

Re: Shimano Brake Cable Pull
« Reply #6 on: June 17, 2020, 10:26:09 pm »
Brown products are discontinued according to the key (click the tiny "i" at the top)

(Although there's a lot of black stuff that definitely isn't current)

Re: Shimano Brake Cable Pull
« Reply #7 on: June 17, 2020, 10:28:05 pm »
in theory;

Blue = new product
Brown = discontinued product

cheers

Feanor

  • It's mostly downhill from here.
Re: Shimano Brake Cable Pull
« Reply #8 on: June 23, 2020, 05:16:33 pm »
Replaced the calipers with a pair of R8000 and the difference is like day and night.
Not just back to normal, but better than normal!