Any question answered...

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  • Hi all, I recently picked up my first electronic groupset, the Shimano DI2 Dura Ace 7970 kit. I thought I'd test it before fitting it to a frame so have connected it all up. I think it's working fine but did notice a couple of things about the front mech which I'm unsure about.

    Firstly when shifting through the gears with the rear mech the front mech also reacts, is this normal? For example with the front mech in the position for the larger chainring if I start with the rear mech over the smallest cog, as you shift towards the larger cogs at the rear, after four of five shifts the front mech also moves inwards a little bit, in the direction of the smaller chainring. I'm guessing this is to help avoid the chain rubbing on the inside of the front mech cage, but is that right?

    Secondly again with the front mech, when I shift from the smaller chainring to the larger one I notice the mech shifts outwards as you'd expect, but then shifts back inwards slightly, is this to make sure the chain shifts and seats fully before the cage repositions to best avoid chain rub? Similarly the front mech does something similar when shifting from the larger chainring down to the smaller one, but instead shifts part of the way towards the smaller ring, but then shifts a bit further towards the smaller ring, the reason for this seems less clear.

    My guess is that the mechs are working fine and all this is normal, but if anyone with experience of this or other electronic groupset a can shed any light on this matter I'd appreciate it, cheers.

  • yeah I think it was the thread in rider down that I remember him posting on that his contributions have gone from. At the time I was thinking this was pretty unprecedented stuff as he posted hours after the incident with his version of events and in the days after too.

  • That's the auto-trim mang

  • yes, much nuking and editing occurred

  • Suddenly everything is back in perspective

  • add Will Melling?

  • The main reason is that the metal tool often damaged the external bottom bracket due to hand cackiness, the plastic adaptor prevent this.

  • Swissstop green pads, do they ever get quieter? Does a coating form onto the braking surface after a while or am I going to play Miles Davis on acid at every red light for the next few months?

  • At least people hear you coming ;)

    I have the same issue with my commuter and it's not gone away. It can be much more effective than a bell though!

  • They're very hard wearing pads so might take a while, try toe-in?

    Alternately, go for a softer compound pads such as the Swissstop BXP (blue), as they perform better in wet and less likely to wear your rims out in one winter.

  • Will a 9 speed indexed thumb shifter (sunrace) work with a Sram x5 9 speed mtb derailleur?

  • I think I failed a trolling test or something and he blocked me, I want to know that the foxes are getting enough sausages and the like.

  • And I miss that one with it's tongue out a little bit.

  • I'll tag you in one of my mate Dave's pictures, he's got a pet rescue fox... So fucking cute...

    Yes?

  • You need to toe in the pads, so the front of the pad hits the wheel first.

  • Yeah, they're fine if you toe them in properly... Mine have been screech free ever since I fitted them...

  • Can't go wrong with more foxes, unless it's the labour leadership thread.

  • ^ topsnarklel

  • Can anyone recommend a barber in new cross/Greenwich/Peckham sort of area?

  • Cheers for the replies @Amey and @dubtap, thought the front mech adjustments were trim related, thanks.

  • I want to slam my stem a little more on the road bike. It's got a carbon steerer.

    How safe is it to have the stem more than 5mm down from the top of the steerer? Does the stem have to align with the bung? How low is dangerously low?

    Two reasons, the first being I'd like to try before committing and cutting, the second being I'd rather not cut too short as it's likely I'll be selling the forks in the medium term and a longer steerer makes for an easier sale, however I'm keen to try a longer and lower position.

  • What kind of bung is it? Can you lower it to be centered inside of the stem?

  • I'm looking at getting a bike which has been discounted to £999 as it's a 2016 model.

    The bike shop I've reserved it in have been really helpful so far, and I've known them for years and know they're legit.

    However, when I mentioned getting the bike using the Cyclescheme, they said because they get charged 10% on a £1k voucher (which I can believe having worked in a bike shop myself), they would have to add £100 back on to their price to cover their losses, as otherwise their profit would be hardly anything above the trade price.

    I can empathise completely and don't hold it against them - but can they do that?

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Any question answered...

Posted by Avatar for carson @carson

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