utoner34

Anybody using these brakes on their bike?

https://www.ebay.com/itm/TRP-HY-RD-R...d=201987390114

u235

Ii have them.. About 10k miles of mixed road/off road in all kinds of weather and conditions. Not as good as full hydraulic but better than mechanicals. Pretty much they are there and they work out of sight and mind. I never do anything with them except bled them once and replace pads when they wear. They use a B01S or equal sized type pad.

qualia8

Not sure which generation this is, but i had the first gen and they sucked. They worked fine until it was cold and they locked closed. I had to drag my bike home several miles, where after thawing in the garage, the brake released again. That was the rear. Front cylinder blew a couple of months later and that was that: I was back to cable actuated discs.

PeakBoy

Have them on my winter bike and they have been excellent. Minimal maintenance beyond a change of pads. A few comments:
- I think the version 2 have ‘Mineral Oil’ marked on the reservoir, but I can’t see this in the online photos. May have to check on my bike.
- As standard the callipers are set to work with Shimano 11 speed STI levers (cable pull ratio). To use with older Shimano, SRAM or Campy a modification may be needed. There are videos on how to do this, alternatively there are replacement parts from JoeJack951 (searchable on this and Weight Weenies forum). The one-time only mod takes a few minutes.
- Compressionless brake housing will assist in performance. I use Yokozuna Reaction housing and cables.
- The set up instructions can be a little confusing. Some feedback comments around lack of pad self-adjustment may indicate incorrect set up. There are videos and set up guides on the web which may be worth checking out.
Some discussion at:
https://www.bikeforums.net/road-cycl...-build-12.html

mstateglfr 

As an alternative to consider- juintech f1 calipers. These are the flatmount style. R1 are the postmount style. And there is an x1 too(not sure what that style is for).

They cost $115-150 depending on which model you buy and from where.
I have f1 calipers on my gravel bike and they work great.

Juintech is lighter than the hy/rd and smaller too.

f1 $116. https://www.ebay.com/itm/Juin-Tech-F....c100930.m5375
f1 in red for f135- https://www.ebay.com/itm/Juin-Tech-F....c100930.m5375

utoner34

It does says mineral oil on ebay photos, but I am still suprised why they are so cheap when the price here is double:

https://www.bike24.com/1.php?content...C%7C%7C2%7C%7C

utoner34

I have Shimano Tiagra STI, 10-speed , will this have problems with cable pull ratio?

u235

I have Tiagra 4600 and they are fine. I know the 4700 has a different der pull and think the brake is the same as the older 4600.

PeakBoy

Some other internet outlets seem to have a similar price. There are a number of sources on AliExpress shipping at around this price from Taiwan (I think TRP are based there). TRPs own website has the post mount version as out of stock, with availability for the flat mount. Your eBay source is showing PM, but the Bike24 link has FM. Might be worth just checking which format you need.
Also some sources seem to sell with it without rotors, although your eBay source does look to be the full kit.
Good luck with the project whatever solution you go with.

redlude97

I ran them before going to all hydraulic discs. I've been running road disc for ~10 years now with the full progression from mechanical BB5,BB7, Hayes, TRP Spyre, TRP Hyrd, RS685, Red HRD, R8000 and they are good middle ground when paired with modern cable pull levers, or hacked with shorter lever arms from member joejack. The original pads suck but Shimano makes a compatible organic and metallic pad and the self adjusting pistons are nice to have. Make sure you use them with compressionless housing

utoner34

I asked TRP Cycling Components I TEKTRO USA for a difference between versions:

The first generation HY/RD has “mineral oil” printed on the side of the reservoir facing the wheel, and the second generation has “mineral” oil on opposite side of the reservoir. Yes, HY/RD needs to be used with levers using a SLR-EV pull ratio so 11 speed and 10 speed Tiagra levers will work.

Currently I have Tektro Spyre mechanical disc brakes and I must say they are pretty good, only on long downhills I would like to have hydraulics.

illdrag0n

I ran them up until recently since 2014. I had no end of piston related problems. Ended up swapping for Spyres and even though they are full mechanical, i like them more.

utoner34

What problems and why there were happening?

WhyFi

How much are the TRPs? You can get 105 levers and calipers for ~$260 at Merlin, 505s for closer to $200.

Chi_Z

make sure your frame allows for cable actuated disk, my internal routed frame is designed for hydraulic, the bends at the chainstay was too sharp for cable