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yoav

Member since Mar 2010 • Last active Dec 2018

Most recent activity

  • in Mechanics & Fixin'
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    For reasons best known to themselves, Shimano made the cable pull ratio of the latest 10 speed Tiagra the same as 11 speed Shimano, thus incompatible with any older Shimano 10 speed mechs or shifters.

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    We get people popping in with their bikes a week or so before they want to use them to have us check if they are good to go which I always think is a good idea.

    Definitely a good idea. I am in the process of going through accreditation at Glasgow and when/if I get through, I will definitely want my own bike. Though I suspect I might end up buy a Dolan which are very similar if not identical to the hire bikes so good to go, I assume.

  • in Mechanics & Fixin'
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    I have contact details for him but the last time I spoke to him was about 3 years ago so I don’t know how up to date they are. Send me a PM and I’ll pass them onto you.

  • in Mechanics & Fixin'
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    Or, buy a seat tube gauge. Admittedly, it’s not something you’ll use every day and it’s not much use for anything else but it will give you the definitive size. Alternatively, take your frame to a bike shop and ask them to measure it using theirs and play nice by buying your seatpost from them.

  • in Mechanics & Fixin'
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    It’s absolutely fine. I’ve been running a single speed freewheel on a fixed gear hub: there is even less thread than you have holding the freewheel on. It’s been like that for 3 years and each years it comes off for a clean and regrease and it’s been fine.

  • in Mechanics & Fixin'
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    Almost certainly a new tube. I doubt the metal is thick enough there to take a weld. 2 other things to consider;

    1. If that tube broke, what’s the state of the rest of the frame?
    2. Repair and repaint may cost more than the frame is worth.
  • in Mechanics & Fixin'
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    There is nothing special about the campag adjuster, apart from the price. Go to a bike shop and they’ll probably have some lying in a box somewhere. Also try eBay or SJS cycles who specialise in these small bits and pieces. I think. I think I also saw some in Halfords.

  • in Mechanics & Fixin'
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    If you measure the distance between teeth on the cassette or chainwheel, it will be 1/2 inch - it is the standard so chains, freewheels, cassettes and chainsets will work together (everything else being equal). But why 1/2” I hear you ask. Well, it was set by the British bicycle industry many years ago and everyone else followed suit and still do to this day. Shimano, as usual, had other ideas. Why not make it 10mm instead and thus all the parts of the drive train are smaller and lighter for the same gear ratio. So they made all the parts and they were for sale for a while, and obviously not compatible with anything else on the market. It lasted a few years, I think. Bits come up for sale on eBay now and again.

  • in Mechanics & Fixin'
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    Heard of it but never seen one. Shimano does have a history of trying out lots of new things, which are theoretical improvements but some do not prove popular and are quietly dropped, like the 10mm pitch drive train. On the other hand, I have a very early Shimano indexed rear derailleur which uses 2 cables to actuate gear changes, which has been somewhat refined since then!

  • in Mechanics & Fixin'
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    Actually while you’re there, install self-extracting crank bolts and save yourself a lot of grief in the future.

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