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Questions & Answers

Updated: 04/11/2020.

At the bottom of this page, in the comment section, you can ask what you wish to know. With a suggestion to first try website search – your question may already have been answered:

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I answer as soon as I can, but depending on my other obligations, it might take over a week sometimes. For urgent questions, or private 1 on 1 consulting, see my consulting page.

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8 thoughts on “Questions & Answers”

  1. Hi Relja
    Can I use Campagnolo Centaur 10 speed, chain and derailleur, on an Elite Zumo smart trainer with a Shimano 10 speed cassette?
    Many Thanks in advance.
    Kenny

    Reply
    • Campagnolo 10 speed cassettes have different pitch, while their 10 speed chains have different width, compared to Shimano 10 speed ones.
      So I would not expect it to work very well, but haven’t tried it. Sometimes, close enough works satisfactory, sometimes not. In this case – I would expect shifting to be rather poor.

  2. I am looking for a Suspension seat post for a Raleigh witch is 36.1 But none of the post match that size

    Reply
    • While I like to think I’m a wizard – making 20+ year old bicycles and computers up and running – suspension stuff is out of my area of expertise. 🙂

      Hopefully, an expert on the topic will come across these comments and provide a shopping link.

      An alternative could be using a shim to fit a smaller diameter seatpost – if such can be sourced (both the seatpost, and a matching shim).
      Shim can also be machined. With a DIY option of cutting a can of beer, or some poisonous sugar filled “soft drink” (yack! 🙂 ), making shims out of that, to match the difference in diameters. Minding it doesn’t slip inside the seat tube (hard to take out later) – leave some “lips” protruding out and aside, to keep it in place. And minding not to cut oneself when making and fitting it.

  3. Hello. I have a few Sram max shift 3.0, 7 x 3 grip shifters that are new im trying to use up in my shop. I have in-fact through the years used these with some types of shimano rear derailleurs, but do not remember which shimano, i think tourney, mabye alivio. My question is for an atb which Derailleur from shimano, least expensive can i use for the rear with my last few new pairs of sram grip shift shifters? Sorry for any confusion. I have always been a shiman person, i just want to know how i can use sram with shimano without breaking the bank on a sram derailleur. Thanks much

    Reply
    • I’m not sure which standard that shifter is. As I’ve noted in the rear shifter compatibility article, 7 speed SRAM shifters were made in a Shimano compatible cable pull configuration, as well as using SRAM’s “1:1” cable pull.

      If the shifter is 1:1, it will only work with SRAM 1:1 rear derailleurs (and, based on my calculation, but I haven’t tested this – with Shimano 11 speed road bicycle rear derailleurs, and Tiagra 4700 10 speed road RD).
      If the shifter is a “Shimano compatible”, then it should work with Shimano rear derailleurs for 6 to 9 speed, as well as with non-Tiagra 4700 10 speed road RD-s (but not with 10+ speed MTB RD-s).

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