Anyone know anything about disc brakes?

I fucking hate disc brakes!

Took a Deore hydro off my Day One a couple months ago and replaced it with a bb7 (because I was tired of the constant rubbing with the Deore that despite my best efforts I couldn’t fix) and put it away in a clean, dry box with other clean, dry parts.

Refitted it yesterday and it squeals like a pig. Like, ridiculously badly.

Torched and sanded the pads, cleaned and sanded the disc yesterday then drag and douse all the way to work this morning and it’s just getting there. Bite not bad. Only noisy as I come to a stop.

Bike sits indoors all day while I’m working (not in the workshop so no contamination from errant wd40 skooshes or anything) then I go to ride home and the squeal is back and the bite has gone.

Drag and douse brings the bite back for all of about 5 minutes.

It’s not a fluid leak at the caliper as the lever has (and always has had) very little pull and a solid feel.

I’m tempted to braze posts onto the fork and run a rim brake.

It’s not a fluid leak at the caliper

Yeah it is, sozzles. As the fluid exits at the calliper the diaphragm in the leaver reservoir collapses to prevent air from being drawn in.

Fuck, you might be right. Just whipped the pads out and one of them is damp on the back.

COCK!

Mechanical brakes 4lyfe

Yeah it is, my road ones did the same.

How old are they? Try to get them warrantied?

Meh, can’t remember. Could be 6 months, could be 18. I bought 2 so would need to figure out which this one was. Both eBay purchases I think. Maybe one was from Evans.

Might look into it actually.

Yup, (a different) bb7 pinched off the wife’s bike, fitted, bedded and doing what it should, silently within about 5 minutes.

The one from Evans was bought March ‘17.

Only be a year warranty eh?

Been messing around with these spyres and not impressed.

When compared to BB7 and compressionless, they do feel unremarkable (especially since my old Croix de Fer you borrowed were more powerful than my TRP Spyres), no matter how many bikes I have build with them, I can never get a good solid bite from them.

TBF, I don't think we can get metal pads for Spyres, as that would offer a better bite than resin in spite of rotor wear.

What about the new Shimano flat mount? the RS305, unfortuantly I have not ridden with it, but the fact it take the same pads as the hydraulic mean you have a choice of resin and metal, and construction look good.

TL:DR; just give me your damn bike and I'll work the kink out.

Just about, no harm dropping them an email?

No harm trying, particularly if you're barely using it to begin with.

You should bring it with you to the shop, explain that you understood that you purchase it in March 2017, however, it have not been used often to cause the leaking, if they said it's not warranty, press them further to send it to Shimano for them to inspect it.

I'm usually wary toward customers when it come to warranty where it's really down to wear and tear than a fault with the product, however there is some cases where I do fight for the customer as the evidence and information they given me clearly indicate that it's not wear and tear.

An example in my case is a bicycle that have been owned for over a year, yet the original part show no wear, from the pads right down to the chain still got it's original wax, and looking at the history incidated that there wasn't anything wrong with it (was downgraded from a Gold Service to a Bronze as it was very clean) it took some coaxing from the manufacturer to offer a replacement frames as a gesture of goodwill because it was clearly ridden less than 100 miles yet a crack have developed on the top tube.

Thanks, I’ll give it a shot then.

It’s got the original pads in it and they still have plenty meat left on so hopefully that might help show it’s not been used so much.

Exactly, just present them as much information as possible, speak to mechanic even, be super polite, and I reckon you should get it sorted.

TBH, even people who screamed at me still get what they want sooo....

Bring it to @edscoble ? ;)

Would have suggested this but he's nowhere near London!

Yeah, about 4 miles to my local Evans, about 400 to London!

Dang! But yeah touch wood 3 years and counting but mine's holding on!

I had the same above discussed problem on my front spyre : the arm wasn't fully back in place after a pull. I have the brakes this a year, change the pads 3 times and never took the time to clean them.
Yesterday I cleaned the front caliper, dissassembled it as much as I could, sprayed some oil in the moving part and put it back and it seems that the problem is solved.
No problem on the rear,thanks to its implantation it suffers less from the road grit.

I’ve ended up adjusting the lever reach screw in the 105 shifters which has improved the bite point significantly- pads still need bedding in but feels a lot better now.

Both pairs of my spyres are excellent. One with metallic pads.

Continuing my disc brake saga, I was convinced the bb7 I fitted to my Day One was gonna need stripped and rebuilt as it started making this horrid metal on metal screechy creak when I pulled it on.

Turns out it was the cable rubbing against my mudguard stay.

Anyone has good or bad experience with Hope RX4 Caliper flat mount? I was recommended these as an upgrade instead of the Shimano ones for my new bike... and I like their colours...

Still I am not sure if they are compatible with the Shimano M8000 groupset that I want...

Yap, I am going for non matchy matchy cranks, so might as well push the boat out with different calipers or whatever.

Bottom line is, I want to spec my frame and fork with flat mount (I might be repeating myself here), but flat bar means MTB parts. I know flat mount to post mount adaptors would be the obvious solution, but I was told these Hope RX4 might work with flatbar direct?

Sent an emai to Hope and have no reply yet.

Any help appreciated.

They're meant to replace road calipers, but they probably would work with XT levers, I think the master/slave piston sizes are close if not the same.

In what direction did you do this? or in other words, were you trying to gain more lever throw or less?

I hate my spyres. I've got new Tiagra levers and Jagwire compressionless housing.

It feels like when braking from the drops, I just can't stop (maybe my small hands). I can engage the levers and they quickly bite, but they don't quite bite enough. So I guess that means short lever throw, quick engagement, but no bite/power?

Maybe I just miss the modulated feel of rim brakes?

What do people think of the TRP HY/RD setups?