[Udi]

Dafuq is up with using Shimano MC's for frankenbrakes?
IME a shimano MC has a 1 year life before it's kaputz.

Correct. Given that somehow this hasn't already been made infinitely clear:
The problem with Shimano brakes isn't just the caliper or just the lever. It's BOTH.

I don't know. I bought cura 4s for 105 quid per end. That's pretty affordable.

Documented issues in this thread already - from memory the MC capacity is too small for the caliper and will run out of fluid before the pads fully wear. Otherwise a good brake I believe, I've liked the ones I've ridden. I'm interested to hear if this issue has been addressed.

Can someone here who likes the marshy/gravity bleed convince me that it's not a stupid idea?
Seems rather counter intuitive

Find stupid idea, use logic to explain why said idea is stupid, then ask people to convince you otherwise.
Seems rather counter intuitive.

 

[Happymtb.fr]

The possible positive thing with the marshy bleed on shimano caliper is that it lubricates the seals with reference to the quote from PB where the ceramic pistons are too rough to "allegedly" allow the seal to glide when needed.

 

[Happymtb.fr]

Anyone knows what bleed kit is compatible with Hayes Dominion? I have Avid/Sram and Formula at home. Would that be OK?

 

[buckoW]

Those will work

 

[jonKranked]

Valid (IMHO) comment on PB about Shimano wandering bite point and ceramic pistons.

any mention as to where/how they're sourcing the pistons for the lower end brakes? or just buying a caliper and cannibalizing the pistons out of it?

 

[jonKranked]

also, i've been wondering if using high frequency vibrations (akin to an ultrasonic parts cleaner) pressed against a brake caliper would free any air pockets to help them better escape the system

 

[StiHacka]

any mention as to where/how they're sourcing the pistons for the lower end brakes? or just buying a caliper and cannibalizing the pistons out of it?

I don't think he mentioned where he was sourcing them.

 

[slimshady]

also, i've been wondering if using high frequency vibrations (akin to an ultrasonic parts cleaner) pressed against a brake caliper would free any air pockets to help them better escape the system

I asked around down here, a friend of a friend of a friend recommended these:

14.35US $ 31% OFF|Brake Caliper Piston Replacement Road Mtb Bicycle Hydraulic Disc Brake Parts Accessories Fits For Shimano 17.2/15.1mm Pistons - Bicycle Repair Tools - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

 

[jonKranked]

I asked around down here, a friend of a friend of a friend recommended these:

14.35US $ 31% OFF|Brake Caliper Piston Replacement Road Mtb Bicycle Hydraulic Disc Brake Parts Accessories Fits For Shimano 17.2/15.1mm Pistons - Bicycle Repair Tools - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

are these the ones @kidwoo tried and leaked everywhere because they were undersized?

 

[slimshady]

are these the ones @kidwoo tried and leaked everywhere because they were undersized?

Nope, AFAIR those were aluminium ones. These are syntethic.

 

[jonKranked]

Nope, AFAIR those were aluminium ones. These are syntethic.

ah that's right.

....but synthetic what?

 

[StiHacka]

ah that's right.

....but synthetic what?

The listing says: Made of high quality material
My guess is licorice candy so that checks out.

 

[jonKranked]

The listing says: Made of high quality material
My guess is licorice candy so that checks out.

the highest quality chinesium

 

[slimshady]

the highest quality chinesium

Hey, at least these aren't rated "e-bike specific" .

 

[Bikael Molton]

This thread is great for preventing me from spending money on any brakes on offer. I was close on Cura4s and Maguras, but the lever issues, especially on the plastic maguras, seem ridiculous.

I'm just going to bleed the Codes again and deal with it... at least the MC is made of metal and has survived impacts that scratched and gouged it to hell. That seems like a basic requirement for a mountain bike brake.

 

[slimshady]

Regarding the Maguras, down here they have a bad reputation among shop mechanics because they tend to leak oil through the pressure equalization port in the handlebar clamp if you go too hard on the pressure when bleeding them. Has anyone here experienced this?

 

[StiHacka]

Regarding the Maguras, down here they have a bad reputation among shop mechanics because they tend to leak oil through the pressure equalization port in the handlebar clamp if you go too hard on the pressure when bleeding them. Has anyone here experienced this?

Yes, with MT8s.

 

[Udi]

Regarding the Maguras, down here they have a bad reputation among shop mechanics because they tend to leak oil through the pressure equalization port in the handlebar clamp if you go too hard on the pressure when bleeding them. Has anyone here experienced this?

Not specific to Magura, but that's not abnormal in most brakes. When bleeding any open system brake, if the lever is in the neutral position, the timing port is open and thus the MC piston pressure seal is inactive. If you pressurise the system in this state, the pressure is instead on the bladder / compensation seal - which is often designed to leak fluid under excess pressure. Maybe it happens a little easier on Magura.

It's worth noting that the same applies for vacuum (on avid-style bleeder equipped brakes, eg. Formula / SRAM / TS), if you syringe-pull too hard while the lever is released you can very easily draw air in through the reservoir seal and think you are pulling air from the system when instead you're just adding it. You can improve the situation in this vacuum case by holding the lever closed (allows a little more vacuum pressure to draw out bubbles) but it's still limited, as the MC directional pressure seal is being loaded in reverse, and thus will still pull air through the reservoir at a much lower pressure than the system's functional max pressure.

As a general comment, I think people bleed brakes excessively to temporarily fix problems which are actually caused by a combo of design flaws and premature system wear.

 

[Jm_]

Yeah, if its that hard or complicated to get a “good bleed”, then the system and therefore brake, sucks.

 

[jeremy_2640]

Correct. Given that somehow this hasn't already been made infinitely clear:
The problem with Shimano brakes isn't just the caliper or just the lever. It's BOTH.

Documented issues in this thread already - from memory the MC capacity is too small for the caliper and will run out of fluid before the pads fully wear. Otherwise a good brake I believe, I've liked the ones I've ridden. I'm interested to hear if this issue has been addressed.

Find stupid idea, use logic to explain why said idea is stupid, then ask people to convince you otherwise.
Seems rather counter intuitive.

@twodogsfighting

I'm almost two years into Cura4's and have had a positive experience.

Pro's
- Oddles of power
- Nice lever feel
- Easy enough to bleed
- Mineral Oil

Con's
- Top up MC halfway through pad wear (small MC resi)
- If I travel with my bike in vertical position can take a couple of pumps of brake to bring back to normal feel (small MC resi?)
- Wore out lever pivot bushings (replaced easy enough)
- Pad availability (bought a whole bunch at one time to reduce cost, pad availability is definitely better than when I first got them)

Overall I'm happy with them and would purchase them again.

 

[OGRipper]

Fed up with the high maintenance of Codes as well as recent terrifying experiences of lever going to the bar, I made the highly questionable decision to give a set of 4-piston SLX brakes a shot instead. (Downgrade?) Got 'em cheap and easy so I figured what the heck. After a couple of rides I'm digging the feel. I'm one of those people who rode shimano brakes forever, even after SRAM 1X came out. My last couple of bikes came with SRAM brakes so I lived with them, but I'm happy to be back on Shimano. I haven't been able to hit any longer/steeper descents to really test them yet, but no wandering bite point so far. Fingers crossed that I don't die...

Interesting that they don't include a bit point adjustment screw with SLX, there's just a plastic dummy screw in its place. I hear you can just add a grub screw for an easy upgrade and may give that a shot to see if it does anything.

If these end up sucking I'm gonna need to pivot to something like TRP or Trickstuff unless maybe new Saints actually materialize and seem promising.

 

[6thElement]

Fed up with the high maintenance of Codes as well as recent terrifying experiences of lever going to the bar, I made the highly questionable decision to give a set of 4-piston SLX brakes a shot instead. (Downgrade?) Got 'em cheap and easy so I figured what the heck. After a couple of rides I'm digging the feel. I'm one of those people who rode shimano brakes forever, even after SRAM 1X came out. My last couple of bikes came with SRAM brakes so I lived with them, but I'm happy to be back on Shimano. I haven't been able to hit any longer/steeper descents to really test them yet, but no wandering bite point so far. Fingers crossed that I don't die...

Interesting that they don't include a bit point adjustment screw with SLX, there's just a plastic dummy screw in its place. I hear you can just add a grub screw for an easy upgrade and may give that a shot to see if it does anything.

If these end up sucking I'm gonna need to pivot to something like TRP or Trickstuff unless maybe new Saints actually materialize and seem promising.

Trickstuff have got some cheap brakes coming out

https://www.pinkbike.com/news/trickstuff-stealth-brakes.html

 

[Nick]

Trickstuff have got some cheap brakes coming out

https://www.pinkbike.com/news/trickstuff-stealth-brakes.html

 

[Westy]

also, i've been wondering if using high frequency vibrations (akin to an ultrasonic parts cleaner) pressed against a brake caliper would free any air pockets to help them better escape the system

Time to bust out the ultrasonic fanny hammer and find out

 

[JakeSM]

heard of electric toothbrushes and engraving pens used for this.

also, i've been wondering if using high frequency vibrations (akin to an ultrasonic parts cleaner) pressed against a brake caliper would free any air pockets to help them better escape the system

Time to bust out the ultrasonic fanny hammer and find out

 

[Jm_]

Trickstuff have got some cheap brakes coming out

https://www.pinkbike.com/news/trickstuff-stealth-brakes.html

And by “coming out” you mean sometime in the next Trump administration.

 

[slimshady]

Trickstuff have got some cheap brakes coming out

https://www.pinkbike.com/news/trickstuff-stealth-brakes.html

Didn't they do the same thing a couple seasons ago?

 

[6thElement]

Have you got both your DH-R EVO's yet?

 

[Nick]

Have you got both your DH-R EVO's yet?

No. Fronts are due next week. Im excited to try them out.

 

[jonKranked]

Time to bust out the ultrasonic fanny hammer and find out

 

[jonKranked]

I ordered you a regular set like 6 months ago.

 

[Nick]

I ordered you a regular set like 6 months ago.

So only (math) 10 months to go!

 

[jonKranked]

So only (math) 10 months to go!

Just in time for 2022.

Seriously though, I haven't. But I've been tempted to and charge you like $400 markup just to have them right away once I take delivery. Because you're so impatient

 

[Nick]

Because you're so impatient

do you have an eta on a pair?

 

[Sandwich]

do you have an eta on a pair?

Right after the rm t shirts ship

 

[Jm_]

do you have an eta on a pair?

for my Lahar.

 

[jonKranked]

Right after the rm t shirts ship

3 years and counting on the lawsuit(s)

 

[Westy]

Just in time for 2022.

Seriously though, I haven't. But I've been tempted to and charge you like $400 markup just to have them right away once I take delivery. Because you're so impatient

I may have ordered a bike on a whim knowing that once I got it I could easily resell it at little to no loss. Hell could probably make money, but wouldn't try.

 

[Cummo]

Hi Guys, Please excuse me for dropping in here on a scintillating conversation that Trick Stuff may have stock and it may even be cheap but i suffered a bit of a head banger last week and I have searched high and low for an answer which isn't coming. Maybe your guys could please help.

I have a new set of MT7 Racelines, I crashed after about 3 hours of use and the lever went to the bar. After much headache ( read bleed, bleed again) I decided it must be a problem in the MC so i pulled it apart.. Sure enough the 10.5mm Master Cylinder main seal sheared right through, resulting in a sealed system with no lever pressure.

I mailed Magura and prayed, sure enough they came back an said it wasn't a warranty as the system isn't leaking and they don't sell rebuild kits, so its a 100EUR lever to fix a 1 dollar seal.

Would anyone know if there a possibility to source just the seal anywhere, I searched and searched but cannot find anything. I found a number of piston kits but i cant be sure the seal lip is correct or dimensions are the same.

Apologies again if its been answered, which would be awesome.

Thanks.

 

[Happymtb.fr]

@Cummo
Cheaper levers from Magura are likely to have the same seal or you could get Shimano levers. Deore are cheap and/but disposable