Dammit’s adventures in mountain biking

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  • Well, I admit that that's tempting.

    Best check the torque on ALL bolts to make sure they're per manufacture spec.

  • Already done that.

  • Thru axle tightened up?

  • Here's a little montage to help you make up your mind...

  • This spring looks more fun

  • Hydraulic bottom out was plagued by problems on those

  • I think the orange spring would look good on my bike.

  • The orange was my favourite too, not that I have a bouncy frame to fit one to...

  • My business partner has EXE-TC shocks on his car, I think that was £12,000.

  • DMR Vault pedal service kit has two extra seals (one per side) that a) aren't on the pedals and b) aren't on any of the instruction videos I can find showing how to service these pedals.

    Anyone know whether this is just in there to troll people and I should bin it?

    I also didn't know you had to buy the special DMR bushing removal/replacement tool, so that's on the way now.

  • The new MT7's don't require the spacers that the old ones needed to position the pads inline with the outer edge of the disc - indeed, leaving the spacers on means the pads overhang the rotors.

  • Also, as Howard has said in the past, the paint on these callipers is much softer and more vulnerable than the standard anodising. Hey ho.

  • That's interesting.
    The old ones were potentially misaligned then?

    I did think it was bizarre that you had to use spacers in the first place.

  • Well, they were straight to the frame mounts, so not mis-aligned in that respect, but the new ones are either different castings or machines differently

  • Yes, the faces of the mounting points on the old calipers must have had too much material machined off or something along those lines.
    Just strange that a QC issue like that could happen.

  • I think its a frame and caliper combination thing. Not every frame is going to be exactly the same. Different specifications exist on where brakes should be placed although they should all be very similar. The hope caliper on my road bike fouled on the rotor and needed slightly spacing. Others use the same calipers on other bikes with no spacers. 2-3mm is not going to be a machining QC issue, that's several tens of times more than an acceptable machining tolerance

  • Nothing has changed apart from the brakes. I just called Magura and they said all their 4 piston callipers are identical so I can’t be seeing what I’m seeing.

  • Maybe the first set were fakes

  • 2-3mm is not going to be a machining QC issue, that's several tens of times more than an acceptable machining tolerance

    Yeah, absolutely. 2-3mm is waaay out of spec.
    Sometimes the post mounts on a frame can need faced but it would only be a fraction of material removed. No where near 3mm.

    The post mount standard should be exactly that - a standard! There shouldn't really be much of a deviation from it.

    Indeed some frames and calipers can sometimes need a bit of shimming.
    But I don't understand what the problem was here?
    Either the caliper its self is incorrectly machined at the mounts or the post mounts on the frame are out of spec.
    Magura say it can't be the caliper.
    If the new set fits fine then it's unlikely the frame mounts are out of spec!

  • Well, they work as I wanted the originals to work.


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  • Which is very odd, tbh. I feel a lot like I've torn the lid off a pot-noodle, stuck it under the hot tap for 20 seconds and then won Master Chef with it.

    The rear brake I haven't bled at all, and when I was bleeding the front brake my bleed kit literally destroyed itself- the syringe plunger came apart and I basically shoved the bleed screws in as fast as possible to stop fluid getting on the floor. And yet, both brakes have huge power and great modulation.

  • Much as I genuinely hate to give DMR any money.


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  • Does seem like a lot of tool for a pedal, how much was it?

  • Twenty quid or so. It's to remove the old bushings (both of mine are shot) and install the new ones.

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Dammit’s adventures in mountain biking

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