oh well derp then.
I *May* have been bitten by the new bike bug...
- Thread starter rideit
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real response - a lot of people who have issues with the shimano brakes have had better luck w/ a second syringe at the lever rather than the cup
How do you connect the syringe/hose to the master cylinder?
I got a non-shimano branded bleed kit that came with the right fitting.
C
do you happen to have a link or a name/description? I haven’t been able to get the last little air bubble out of my rear brake with four full bleed attempts. It’s ‘pretty good’, but not perfect.
That's pretty much the scenario where the second syringe comes in handy.
https://www.amazon.com/Shimano-Hydraulic-including-Genuine-Mineral/dp/B00JU9I720/ref=asc_df_B00JU9I720/?tag=hyprod-20&linkCode=df0&hvadid=312094794167&hvpos=1o1&hvnetw=g&hvrand=4174248801656969469&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9007370&hvtargid=pla-627061960237&psc=1&tag=&ref=&adgrpid=63784736042&hvpone=&hvptwo=&hvadid=312094794167&hvpos=1o1&hvnetw=g&hvrand=4174248801656969469&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9007370&hvtargid=pla-627061960237
I still don't see how a pair of syringes makes for a superior bleed, especially given this comment from the manufacturer:
We have replaced the Shimano 'funnel' with our own version in order to make this kit much better value and save you some $$. The funnel may be slightly better, but it would mean increasing the kit price considerably.
With the funnel method you have to be Stuart Copeland creative to make the last air bubble out of the MC by percussion. The syringe allows you to suck them out and then overfill the reservoir to improve the lever feel.
Lizards.
You can use the second syringe to pull a slight vacuum at the lever which helps get stubborn air bubbles out.
You are not sucking out anything but air from the syringe fittings / connection. And doing bad things to the membrane in the master cylinder reservoir.
you're really overestimating how much such a 20cc syringe can create.
also, didn't shimano do away with the membrane as of m8000?
Well every little thing I do is magic, so I don't need no 2nd syringe.
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That certainly won't feel like walking on the moon...
It's all about synchronicity.
Just buy Maguras, cut the line, throw a barb and olive at it and stuff it in to the fancy plastic bit and it will work, and work well.
I never ever thought I'd be recommending Magura brakes but they are just fucking rad, the three sets before my current ones...........not so much(Julie, Louise, MT6).
I never ever thought I'd be recommending Magura brakes but they are just fucking rad, the three sets before my current ones...........not so much(Julie, Louise, MT6).
i've heard the new mt7's are really good.
When you pull a slight vacuum with the second syringe the volume of air bubbles in the line increases thus increasing their buoyancy. This helps them float to the top and out of your brake line. There isn't enough vacuum to damage any of the internals.
verified
not to mention the fact that the dual syringe bleed method is what's recommend by nearly every other brake manufacturer in mountain biking... sram, formula, trp, magura, trickstuff. the only other company i'm aware that recommends a bleed method that isn't dual syringe is hope.
I only have the MT5 and can't see why you'd really want the 7, plus some people running the 7 put MT5 levers on them anyway.
Mine were something like $80US an end, had Hope, Shimano, Sram over the years and they all had their quirks but the MTs are faultless.
So far very pleased. Best I’ve used.
The lever feel isn’t the same as Shimano, but more immediate than Sram.
I’ve not had to bleed them since installing them a few weeks back.
I got the HC3 levers too, and I think that’s actually a big part of what like.
Hey, do you have a link to a video of the two-syringe method, or can you do a step by step description? I got the kit, but I am not entirely sure how to properly create the vacuum.
It's essentially the same as with Formula or Avid brakes:
https://m.pinkbike.com/news/Tech-Tuesday--How-to-Bleed-Formula-RX-Disc-Brakes.html
The key is to finish the bleeding by closing the lower (i. e. calliper) Port and then sucking some oil from the lever. Then as the last step (after you don't see any more bubbles come out of the reservoir), pull the lever as you pump the syringe, and let the lever return to its resting position by itself.
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The fitting used to bleed a RS reverb works rather nicely with my XT levers
In a pinch, you could use the threaded barrel from a shifter. It has the same thread pitch as the original fitting.
No video, but basically if you suspect you have a stubborn bubble, only attach the syringe at the lever (nothing at the caliper). Youll want a little mineral fluid in it obviously - only a few ml for backfill, then just pull the syringe out at the plunger, it wont go far since the system is closed. You'll probably want to repeat several times. With any luck youll get the air bubble out.
Oh? I've never heard of this. Got a link to the part?
The fitting is the same as for the old Avid brakes.
Which is? I swore avids off years ago.
Pro tip: if the sram stuff has already been used, don't use it on Shimano. You'll have a bad time.
That’s why I used the fitting and syringe from the reverb. Oil mixed with oil ok, oil mixed with DOT not so Ok
Super pro tip: Reverbs use mineral oil, SRAM brakes use DOT fluid. That's why you can use that Reverb bleed kit with Shimano brakes.
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This is what I do with the kit from Amazon. After the first ride since a bleed it'll vibrate any stuborn bubbles to the leaver and you can repeat the lever bleed again.
i never bothered paying that much attention to the reverb.
before SRAM went derping with those new fittings for their Guides, every single disc brake I serviced had the same bleed fittings both in the calipers and the levers, regardless of their brand.
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