The Tester Approves thread (see first post)

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  • cup and cone in generaal vs sealed

    Loose balls vs. cartridge bearings on its own isn't a deal breaker either way.

  • Shimano hubs are heavy but roll really well and last a lot better than sealed.

  • Titanium fixings, i.e. screws and bolts, are not Tester approved IIRC. Can you remind why this is? I'm guessing the extra cost doesn't give a corresponding return and the quality is likely to be dubious as medical and aerospace buyers will get all the good stuff.

  • Can you remind why this is?

    No worthwhile benefit in bicycle service conditions.
    Direct replacement of steel fasteners is potentially dangerous, connections should be made with the materials they were designed for.

    There are a couple of places where titanium alloys properly deployed can substitute for steel in a way which provides tolerable value for money. The most common is saddle rails, the less common one is suspension coil springs. In both cases, the ability to endure large cyclic elastic strains proves useful while retaining the same spring rate as steel parts at a significantly reduced weight. With springs, at least half that weight is unsprung (a bit more in the case of rear shocks where both ends move) so there is a ride and handling gain as well as slightly less mass to lug up the hills.

  • quality is likely to be dubious

    You can buy good titanium parts, but only by paying aerospace prices. If some backyard workshop is knocking them out from CP Ti on the same tooling as they use for steel and aluminium, use the money you save to buy dental insurance.

  • where do you buy your wipperman chains from?

    Usually German shops, e.g Bike24.com

  • Thankyou for replying. I deleted my question as I saw bike24 had them. Much appreciated cheers @gbj_tester

  • CP Ti

    what does CP stand for here?

  • Crazy paving.

  • Commercially pure. It's Ti with no deliberate alloying, but not highly refined.

  • Cock Punch. Obvs.

  • Which chain lube that can be bought and applied easily do you recommend?
    I've been using Squirt Lube but while it keeps the chain clean and weather proof, I have to reapply it close to every week or after every longer-than-commuting ride.
    Does the perfect chain lube exist that checks all three boxes?

  • Boeshield T9 then? Will give it a try next time!

  • Wondering if there is a Tester-approved option for the following:
    Road double outer chainring - 110 bcd, 5 bolt / shimano 11 speed compatible / in SILVER?

    I like TA Zephyrs but for some reason they aren't available in 11 speed outer.

  • I'd be prepared to take the chance that a Zephyr would be fine with 11-speed, if I wanted silver as a priority.

  • Cheers, will probably just give it a go.
    Is there a big difference in the internal width of 10 and 11 speed chains that might make a difference?

    Turns out I actually have both a 9/10 speed Zephyr and a 9/10/11 speed Zephyr in the parts box ( both bought as 10 speed) and it does look like the 9/10/11 is slightly narrower, which makes me think twice....

    But if enough experts on the internet tell me it'll be okay then I'll quit my worrying ways and throw a fraction of a millimetre to the wind!

  • Why are centre lock not approved?

  • it does look like the 9/10/11 is slightly narrower

    Don't just look, measure. 9/10/11-speed chain is all 11/128" roller width.

  • Why are centre lock not approved?

    Pointlessly weak and expensive compared with six bolt, for no material gain in either performance or convenience

  • So I measured...

    They are actually different widths. My vernier calipers have run out of battery but using my extremely precise 'ruler' method (very much not Tester approved), the 11 speed one is a shade under half a millimetre thinner at the base of the tooth 'trough'.

    Anyway, very encouraging to know that the internal widths are the same, and what with the important new discovery of this Zephyr chainring in my parts bin, I am now at liberty to just try it out in real life. If it works it works, if it doesn't I'll get something that says 11 speed on the box and the Zephyr can go back to waiting for my other bike to need a new chainring.

  • My vernier calipers have run out of battery

    If it is battery powered, then it is probably not a Vernier caliper 🙂

  • 'ruler' method (very much not Tester approved)

    It's approved where appropriate, e.g. since I'm not going to be making headset covers in fractional sizes, a scale graduated in single millimetres is sufficient to determine the correct size.

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The Tester Approves thread (see first post)

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