Mountain Bike Reviews Forum banner

101 - 120 of 126 Posts

·
Registered
Joined
·
404 Posts
Except the weight, whats the difference between 4 pistons XT, 4 pistons XTR and Saint - braking power? modulation? pistons size?
All i know the 4 pistons XT and the Saint using the same pads...
 

·
Registered
Joined
·
12 Posts
You buy a isev spec to sram matchmaker adapter and you're all set.
Wolfthooth components makes one

https://r2-bike.com/WOLFTOOTH-ShiftMount-SRAM-Matchmaker-Shimano-I-SPEC-EV-Adapter_1
 

·
Registered
Joined
·
3 Posts
Sram MatchMaker X (Level Ultimates) to Shimano I-Spev Ev (M9100 12speed) Adaptor?

You buy a isev spec to sram matchmaker adapter and you're all set.
Wolfthooth components makes one

https://r2-bike.com/WOLFTOOTH-ShiftMount-SRAM-Matchmaker-Shimano-I-SPEC-EV-Adapter_1
I see they have a mounting option for Shimano M9100-M9120 brakes with a Sram MatchMaker shifter, but do they have a mounting option for Sram MatchMaker X brakes to a Shimano I-Spec Ev shifter? It looks like the Wolftooth one you mentioned would work for both, as the I-Spec Ev brake mount seems almost identical to Sram MatchMaker, and the I-Spec Ev shifter mount appears to just need a pinch bolt to hold it in the desired position. Has anyone tested this? Currently unable to ride until I can get the proper adaptor... Should have just bought a standard band clamp shifter :(
 

·
Registered
Joined
·
12 Posts
No they don't have that now, but if I understand you correctly you want to fix your shimano shifter to sram brakes? Don't know if anybody makes that, but you shifter came with a regular clamp I presume so why don't you just clamp it and ride
 

·
Registered
Joined
·
12 Posts
And for feedback on the xtr, I used saint before, can't say the xtr are any weaker, with a tad more modulation in the initial bite before the saint power comes a little deeper in the lever, feels like the saints with a modded servo wave in the lever, if anyone would try the saint caliper and xtr lever i would think they would feel like that. But the xtr caliper is alot smaller and look really cool
 

·
Registered
Joined
·
3 Posts
Correct, Shimano shifter on Sram brakes.

i ordered this shifter:

https://bike.shimano.com/en-EU/product/component/xtr-m9100/SL-M9100-IR.html

Thats the non clamped version, (to be fair, I havent actually opened the box yet as I'm out of town ATM), so there might be a generic I-Spec Ev band clamp in the box to allow mounting in the event that the proper I-Spec - whatever adaptor isnt available. Fingers crossed but I'm prepared to order a new shifter, but hopefully I can find a shifter cover like has been available with previous Shimano Shifters... Never had any issues mounting any combination of devices with Sram shifters on Shimano brakes, wish Shimano would get their **** together
 

·
Registered
Joined
·
12 Posts
By looking at the shimano page of shifters, it looks like the clamp version and the ispec version is two separate ones that don't mix, in s ram you only get one with the clamp fixed by a screw that wou can remove and fix to the brake if you want, on yours, you have to mount, does not look like shimano makes a separate clamp, and I can't fint an aftermarket one either, I would swap it if I could, because it may take a while for anyone to make an adapter or clamp, you could drop wolfthooth or Problem solvers a message though and hear if they are making anything, maybe you are in luck and find a clamp but they are not advertising it very clearly though
 

·
MTB brakes specialist
Joined
·
295 Posts
I've never really had any bite point wandering problems, since I ride mostly when it isn't really cold.
Trail bike -> XTR Trail M9020 levers + Saint M820 calipers.
CX bike -> Saint M820 levers + XT M875 calipers.

Could reproduce this problem only when standing near my bike and depressing levers' triggers really quickly, without fully releasing them.

When it gets cold, this is when already thick Shimano mineral oil gets even thicker and has more difficulties to flow back to levers' reservoirs through so called "sniffing openings", which are really small, compared to much bigger "filling opening", which remains blocked/closed by master cylinder piston, if you don't fully release levers' triggers. (see pictures attached)

This results in calipers' pistons not able to (fully) retract as fast as levers' master cylinders' pistons do, followed by next levers' triggers depression, with calipers' pistons not being at their default position, which creates this bite point wandering.

Now, with Putoline HPX R (2.5 WT), which is much less thick than Shimano's (10 WT) and much more consistent at any temps, my brakes feel even more consistent/solid.

And no fading when very steep and long descents, with my 96 kg (naked) + clothes + backpack with 3 L water + tools + Scott Genius 150 mm.

I use Putoline also for my Reverb Stealth seatpost, since it also uses 2.5 WT mineral oil (RockShox).

Synthetic oil is of much better quality (vs. mineral oil), much more consistent and is cheaper, since here in Europe, 1 L Shimano mineral oil is almost 20 € + additionally 10 € for only 120 ml RockShox mineral oil for Reverb Stealth.
 

Attachments

·
MTB brakes specialist
Joined
·
295 Posts
As one can see in this table, Putoline HPX R (2.5 WT) remains consistent at any temp, that's why in the column marked as "VI", the number is very high (468), whereas Shimano mineral oil is only at 98, because of huge properties' discrepancies at different temps.

The lower the number in column marked as "VI", the less consistent is the fluid at different temps.

Don't be scared because of "only" 180°C, because it says that it withstands at least 180°C, whereas Shimano mineral oil is limited to max 225°C.
 

Attachments

·
MTB brakes specialist
Joined
·
295 Posts
Fore those, who want to keep existing levers and just/first upgrade the caliper(s), XTR Trail (M9120) caliper banjo bolt is much shorter than the one for SLX/XT or XTR Trail (M9020)/Race (M9000).

Shimano part number:
Y-8JA00010 (no O-rings)
Y-1XD98030 (with 0-rings)
 

Attachments

·
MTB brakes specialist
Joined
·
295 Posts
For those, who aren't sure, whether XTR Trail (M9120) calipers have same power as Saint (M820), I can assure you - they do!
They (M9120) have same size pistons (2x 16 mm + 2x18 mm).
The only 2 differences are:
1. Slightly shorter free stroke, despite same distance between brake pads and rotor.
2. Servo-Wave curve (BL-M9120) vs. (BL-M9020/M988/M820) is much more linear/gradual.
So power doesn't rump up as brutally as it always did before, despite power remaining same.
Results in more modulation, much closer to XTR race levers (BL-M9100/9000/987).

Fore those, who previously had to combine race levers (with thinner triggers and without Servo-Wave) with trail calipers (Zee, Saint, XT), it's now over.
 

Attachments

·
MTB brakes specialist
Joined
·
295 Posts
Planning to switch soon from my XTR Trail levers (BL-M9020) and XT I-Spec II shifters (SL-M8000-I) to XTR Trail levers (BL-M9120) because of more linear Servo-Wave curve and added stiffness and to XTR I-Spec EV shifters (SL-M9100-I) (have 26-36x42 XT transmission).

Then will also change my Saint calipers (BR-M820) to XTR Trail (BR-M9120) because of weight savings, bling, vertically adjustable banjo and more straight from banjo to bleed port oil route for even less air bubbles trapped when gravity-bleeding (approach/route similar to SRAM).
 

Attachments

101 - 120 of 126 Posts
Top