Any question answered...

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  • Trickstuff Exzentriker is your best bet.

    I've got one brand new and unused if you want it. Bought for a project that never happened.

  • @youramericanlover buy this BB for your arkose

  • Well these do at least fit


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    • IMG_20191204_203507843.jpg
  • Looking at the Shimano BB-UN100, there are two options:

    122.5mm (LL123) for cranks with 50mm chain line
    122.5mm (LL123) Chain Box / for cranks with 50mm chain line

    Can someone explain the difference? What's the relevance of a chain box for a bottom bracket?

  • This is probably easily answerable by the popcorn thread fans, but are there any famous flounce posts? I remember people announcing they were quitting quite a few times, but can't remember the details.

  • I think the Chain Box one has a flange on the drive side, to hold on a chain retention device (box?), or an 'E-type' derailleur like this:

  • Thank you.

    Related to this: BB-UN100 comes in versions for 47.5 and 50.0mm chain line. Sheldon mentions something about oversized tubing requiring a 50.0mm chain line BB. It's an aluminum frame, how do I know if it's 'oversized'?

    The chainset I want to pair it with says 47.5mm chain line in the specs. Should I just get the 47.5mm chain line BB?

    It's for a TREK Aluminum 7300. Can't find a bloody thing about this bike online.

    Any help would be appreciated.

  • Is there a way to add the shifter mechanism to a left Sram Rival CX1 Hydro lever?

  • Other than balloon popping, is there a thread that addresses hobbies on the forum?

  • Excellent, thank you.

  • I'm sick of carrying a big bundle of keys around with me.

    Are there any lock manufacturers that can provide you with a set of various bike locks that all take the same keys?

  • Abus offer it, for example this one:
    https://www.abus.com/eng/QR-Code/Granit-XPlus-54/(variant)/22976

    This lock can be ordered keyed alike to other locks. This means several locks would match one key, respectively key code

  • I just won something by accident from ebay - I forgot I'd bid on it and in the meantime my OH had already bought another on BIN.

    Is there anyway to get out of it? It's a business seller.

    I feel like a dick, but I just don't want to drop £25 on something I don't need or want and will be a pain to sell.

  • Contact seller and ask nicely?

  • ontact seller and ask nicely?

    I'll give that a go.

    As it's a business seller I'd have thought I'm still covered by the distance selling regulations.

  • I want to pixilate an image, reducing the number of colours too. This is easy enough to do, but then I want to know what the underlying colours for each square are. So the result would look something like this:


    1 Attachment

    • Untitled.jpg
  • Meaning, you want the average colour for each square? According to this link, taking the root mean square of all RGB values (per channel) should give you a good 'average colour'. If you then want to only know the actual colour hue, you could convert the RGB values into the HSV colour space (hue/saturation/value) and look at hue numbers only. If you set up a list of 'main colours' that correspond to a range of hues each, you can end up with something like your proposed result.

  • So i take a pic, pixelate it so its roughly 40x40, then I posterize it so it only has a limited palette, but then how do I know RGB is in each of the squares? - ie how do i get a table like:

    Row1,Col1 = RGB 85 68 52
    Row1,Col2 = RGB 86 68 68

    etc


    3 Attachments

    • P1060204 (639x640).jpg
    • pixel (639x640).jpg
    • posterize (639x640).jpg
  • What software/programming language are you planning to use?

    If the latter, then any image library should get you RGB of a pixel, so you'd just wrap that in a loop to sample every 40th pixel per row and column.

    Or put it this way, how would you plan to get your table of RGB values if you weren't doing the posterizing step?

  • i guess thats my question - what software/language can sample every 40th pixel and output the result

  • Well it depends, what software do you use? Personally, I'd make a little Python script that would do the work for me. If you are OK with finding some values manually of course, you can just load the image into something like Gimp and use the colour lookup tool to find the colour of the squares. But as I said, it depends what the context of this is, and how many images (and squares) you want to do it for.

  • Any. What are you most comfortable with?

  • Did you get one? I have one I don't use you're welcome to if we can work out logistics.

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Any question answered...

Posted by Avatar for carson @carson

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