Mechanical disc brake upgrade

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Re: Mechanical disc brake upgrade

Postby Tomcat65 » Thu Sep 21, 2017 4:26 pm

Disc Brake adapters are available, solid arms, washers could actually slip and wiggle under the stress from braking.
The adapters on the front of my Mongoose Malus, going from 160mm rotor left, to 203mm rotor right:
Mongoose Malus 160-203 rotor comp.jpg
Mongoose Malus 160-203 rotor comp.jpg (85.76 KiB) Viewed 237 times

The front and rear mounts are one of 2 standards, IS and Post with the standard being 160 front and 140 rear. So the rear on most BBB MTB's has a 20mm/160mm rear mount adapter.
IS standard has mount bolts through the side, Post mount has mounting bolts directly into the frame:
InternationalStandard_PostMount.jpg
InternationalStandard_PostMount.jpg (51.83 KiB) Viewed 237 times

So, basically, IS adapters convert to post mount anyway.
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Re: Mechanical disc brake upgrade

Postby metalman302 » Tue Oct 03, 2017 5:07 pm

My calipers arrived today. Exactly 3 weeks to the day. I did pull one of the pads out to make sure they were authentic Shimano and they were indeed.
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Re: Mechanical disc brake upgrade

Postby metalman302 » Wed Oct 11, 2017 1:07 pm

Wow, what a royal pain in the ass these are to adjust. I would adjust the stationary pad to where when you squeeze, the disc was centered in the opening, then tighten the mounts. Every time it had walked over after tightening. I got to where I had to tighten it where the disc starts way off center to get it to be close. I still think I'm going to go back and do it again to get it centered better. Regardless, they're on and bedded and they have less flex and more bite and NO SQUEAL!

Of course they don't compare to the feel of hydraulic, but is it normal to feel substantially more flex in the rear due to the longer cable?
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Re: Mechanical disc brake upgrade

Postby Tomcat65 » Wed Oct 11, 2017 2:04 pm

I've always noticed a difference in front and back. Double check all of the cable housing mounts and watch the housings while you squeeze the brake lever, Movement could indicate a problem.
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Re: Mechanical disc brake upgrade

Postby bikesRfun » Thu Oct 12, 2017 1:53 am

Four of my bikes have hydraulic disc brakes, so I got this neat bleed kit.
Attachments
Screenshot_2017-09-15-00-37-16-1-442x517.png
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Re: Mechanical disc brake upgrade

Postby rudiger » Thu Oct 12, 2017 12:59 pm

metalman302 wrote:My calipers arrived today. Exactly 3 weeks to the day. I did pull one of the pads out to make sure they were authentic Shimano and they were indeed.

Got mine today from AliExpress in an identical time (3 weeks). Besides a goofy email I received saying there was a problem with my address, it went off without a hitch. The calipers and pads seem to be authentic Shimano, as well, with the pads having 'B01S RESIN' and 'SHIMANO' stamped on them.

Thanks, again, metalman, for the heads-up on what seems to be a great deal on calipers to replace OEM units.

Anyone need a pair of slightly-used, solid-back, round-pad OEM calipers?
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