Juin Tech GT

RiderR · #1 09-11-2021, 01:09 PM

Anyone using the 4-pot Juin Tech cable-actuated hydraulic disc brakes? How do they compare with full hydro?

wallymann · #2 09-11-2021, 01:29 PM

i use them, swear by them esp mated with ergo levers. i get really nice braking performance despite not using compressionless housing.

i have no experience with full hydros, only BB7s and these are a class above.

suggest searching the forum, lots of discussion about GTs to-date. combined with compressionless housing apparently GTs are a compelling option.

Gummee · #3 09-11-2021, 01:56 PM

I have the 'regular' set on one bike with Jagwire compressionless housing.

Not *quite* as good as the full hydros on my other bikes, but they're not far off

M

Dave · #4 09-11-2021, 04:19 PM

I have the GT on two bikes with Campy rotors and Galfer standard pads. They work great with sram axs levers. Should work fine with Campy too.

I've never owned full hydro yet.

Not bleeding lines is nice.

I like jagwire compressionless housing better than yokozuna.

owly · #5 09-11-2021, 05:37 PM

I would run them with Jagwire Pro? compressionless housing.

Good pads like Koolstop / Swisstop sintered, or organic.

krawlx · #6 09-12-2021, 07:24 PM

I am using the Yokozuna Motokos, which are rebadged Juins as far as I understand. I run the front with compressionless and the rear with non-compressionless Jagwire Sport. (The housing exit in the chainstay is too far rearward to get the compressionless to make the bend.) I put in KoolStop sintered pads.

When I first installed them, I couldn't get the pistons to fully retract on each caliper. As I pushed one back in, it would push the other side out. So I loosened the bleed bolt and then pushed the piston back in, which forced out some of the fluid. That resolved the issue and since then they've been flawless.

I really like that a single knob controls pad adjustment and I find it really easy to dial them in to get the feel I want at the levers. Can't compare to full hydros as I've never run those, but they are a major step up over the TRP Spyres I ran on a previous bike.

robt57 · #7 09-12-2021, 07:33 PM

I just got a GT [ebay in route] to replace a Spyre SLC I am running with a 160 rotor front. I use green Swiss stop organic pads and that makes the SLC very good. But I wanna try a 140 rotor up front and hoping the 4 piston caliper will make for adequate performance. Road bike.

Every since Wally got his set up I have wanted to try these. I don't need that kind of braking rear. Compression-less housing seem superfluous to me. Front cable run too short to matter, rear I don't want better braking. Think Campy skeleton single pivot rear.

When I say seems, I don't mean I have not used it. I won't bother once I use up my 50" roll. Last bike needed black instead of gray so I used what came with my ST-R8050s, but highly polished stainless cable, not the coated shimano.

Dave · #8 09-12-2021, 07:55 PM

The Juin-Tech calipers are only to be used with 160mm front and rear, unlike others, that will work with 140 or 160 with an adapter.

robt57 · #9 09-12-2021, 08:21 PM

Quote:

Originally Posted by Dave

The Juin-Tech calipers are only to be used with 160mm front and rear, unlike others, that will work with 140 or 160 with an adapter.

Is this specific to Flat VS Post?

Dave · #10 09-12-2021, 08:32 PM

The 160mm rotor is required for both models for heat dissipation.

robt57 · #11 09-12-2021, 08:51 PM

Quote:

Originally Posted by Dave

The 160mm rotor is required for both models for heat dissipation.

Ok, guess i am just going for power then.

RobJ · #12 09-12-2021, 09:01 PM

I've been using them for a while, both the GT and the 2 piston F1. I don't feel like I am losing anything over hydro and using normal levers instead of the bulky hydro levers. No issues and adjusting the pads is simple. Definitely prefer the 4 piston; can tell the difference over the 2 piston. I use the Jagwire Pro compression-less housing. Actually like this over the Yokozuna housing.

Edge Sports UK has great pricing on Juin and doesn't take long to get them here.

Sent from my iPad using Tapatalk

.RJ · #13 09-13-2021, 08:30 AM

Quote:

Originally Posted by robt57

When I say seems, I don't mean I have not used it. I won't bother once I use up my 50" roll. Last bike needed black instead of gray so I used what came with my ST-R8050s, but highly polished stainless cable, not the coated shimano.

If you try it, you wont go back, either for rim or disc brake.

robt57 · #14 09-13-2021, 09:40 AM

Quote:

Originally Posted by .RJ

If you try it, you wont go back, either for rim or disc brake.

I bought a 50 roll, tried it. See previous post i made. I was not presuming it, i gained the opinion have used both. I can and do say i get a bigger difference with the organic green swiss stop pads. Use them on fronts of everything i have that is disc.

binouye · #15 09-13-2021, 02:21 PM

I've used both the R1 single piston variety and the GT 4 piston variety, both only with Campy 11spd ergos. I'm currently using the GTs on our tandem with 203mm rotors, and I like them. I have also used XT hydro discs on a flatbar tandem, and those are noticeably more powerful, but the GTs are not too far behind and work well with the Campy ergos. They are noticeably more powerful than the R1s (which I have on a single now). Good compressionless housing is a must-have for them. Bottom line, yes, I recommend them over other cable-pull discs I've tried (HyRd, BB7, Spire).