Current Projects chat and miscellany

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  • I was thinking about asking that just today actually. It was way better when it was on here, the separate site is dead.

    just put up a post on the dfgss that i was going to restart posting here and anybody else was welcome to
    will post in the old section here now , join me if you want the more the better to start the ball rolling

  • New lo-pro Rixon is coming on well, not quite finished, but on a whim bought Donut's Interpro, so that's getting more action now. Anyhow, here's the collected current projects now (last one's my girlfriends)

  • Nice collection.

    That fork on the bob looks like it has no rake? also what mudguards are they?

  • just put up a post on the dfgss that i was going to restart posting here and anybody else was welcome to
    will post in the old section here now , join me if you want the more the better to start the ball rolling

    disaster :[
    just realised the Dublin section here on lfgss was disabled to try and promote the dfgss website . we could try and get it undisabled but i have a suspicious feeling this could make alot of people angry :/

  • ^^Yes, they're straight

    The mudguards are the Tokyo Fixed own brand ones attached with p clips

  • Radiator > all bike stands

  • I was thinking about asking that just today actually. It was way better when it was on here, the separate site is dead.

    I'd much prefer to go back to posting in here too. There just isn't enough traffic to keep people going back to dublinfgss

    Also, rogan was right about the stem and seatpost.

  • Ahh I often see now I presume your gf on that bob jackson on the spice route some mornings.

    Always liked the look of that bob jackson

  • ^^Yes, they're straight

    The mudguards are the Tokyo Fixed own brand ones attached with p clips

    must be weird to ride with? also just curious, what size is the low Rixon?

    i'll stop with the interview now.

  • Saddles on all Rixon >>>>
    or is it <<< back. Shift them back.
    otherwise. Jelly!

  • must be weird to ride with?

    The fork blades are straight, but angled relative to the steerer axis to provide the same offset as a curved fork where the blades are aligned with the steerer at the crown and then curve away. Steering response is the same either way.

  • No fork offset = lots of trail = slow steering.

    In other words, no need for your yikes.

  • i iz confused. Am I right that normal thinking is that steep angles and little rake (which is the same as offset right?) give twitchy/fast steering? Which is what track bikes have.

    Whereas slack angles and big rake gives slow and stable steering, which is what eg. Dutch bikes have.

    Tester, are you saying this is incorrect? Is there a good online article to explain all this? Wikipedia didn't clear anything up for my stupid brain.

  • Got one of these forks now. Do I use it with the red Cross Check or stick with the original Surly steel fork? Is the carbon steerer tube more fragile?

  • i iz confused. Am I right that normal thinking is that steep angles and little rake (which is the same as offset right?) give twitchy/fast steering? Which is what track bikes have.

    Whereas slack angles and big rake gives slow and stable steering, which is what eg. Dutch bikes have.

    Tester, are you saying this is incorrect? Is there a good online article to explain all this? Wikipedia didn't clear anything up for my stupid brain.

    You sort of have things backwards.

  • Beater got a tad more practical.

  • They are zero rake apparently. Yikes.

    They built it so it could barspin (a very odd choice for Bob Jackson) so as far as I can tell they slackened the headtube, and gave it straight forks. It feels normal to ride, perhaps a little slower steering than my rixon, but not that noticeably.

  • Beater got a tad more awesome

    ftfy

    what basket is that?

  • They built it so it could barspin (a very odd choice for Bob Jackson) so as far as I can tell they slackened the headtube, and gave it straight forks. It feels normal to ride, perhaps a little slower steering than my rixon, but not that noticeably.

    Yeah, you can see the headtube angle is quite slack to compensate.

    The whole rake/offset/trail thing comes round every now and then on here. Track bikes often have more trail and thus slower steering than road bikes, ostensibly to offset the lower rear end stability that results from the high bottom bracket.

  • Beater got a tad more practical.

    ftfy

    what basket is that?

    'what basket is that' is the new 'what bars are they'
    racks on tracks are the new HHSB
    up is down, black is white

    I, for one, am glad.

  • Got one of these forks now. Do I use it with the red Cross Check or stick with the original Surly steel fork? Is the carbon steerer tube more fragile?

    I ride a carbon steerer on my pompino and I'm alive. Bike's a lot lighter. Had a crosscheck too, which my better half has now. anywhere you can save weight on it you should.

    Just don't do an owenreed.

  • i iz confused. Am I right that normal thinking is that steep angles and little rake (which is the same as offset right?) give twitchy/fast steering? Which is what track bikes have.

    Whereas slack angles and big rake gives slow and stable steering, which is what eg. Dutch bikes have.

    Tester, are you saying this is incorrect? Is there a good online article to explain all this? Wikipedia didn't clear anything up for my stupid brain.

    You sort of have things backwards.

    They built it so it could barspin (a very odd choice for Bob Jackson) so as far as I can tell they slackened the headtube, and gave it straight forks. It feels normal to ride, perhaps a little slower steering than my rixon, but not that noticeably.

    Yeah, you can see the headtube angle is quite slack to compensate.

    The whole rake/offset/trail thing comes round every now and then on here. Track bikes often have more trail and thus slower steering than road bikes, ostensibly to offset the lower rear end stability that results from the high bottom bracket.

    Steeper head tube angle = Faster steering
    More rake = Faster steering

    Whereas,

    Slack head tube = Slow and steady steering
    Less rake = Slow and steady steering

    Which is why track bikes have really tight angles so they can be responsive and quick, but have to balance out the twitchy steering which gets worse the faster you go (and last time I checked track is fast) with less rake which slows the steering down a tad to make it ridable.

    Fast bikes always have a balance of rake and head tube angle (BB drop and chain stay length also effect handling and steering too), which is why tourers, which are generally used at slower speeds, can have actually have much faster steering and handling than a fast road or track bike, as they are used at slower speeds.

  • Just finished my L'Eroica bike.
    Weighs a ton, looks rock hard and cost £65 to build!

    The blue bag beneath the saddle contains 2 spare tubs, wheel flop is awful, when you're out of the saddle giving it some, but as long as you stay seated and relaxed it handles OK, but with all that frame weight and superlight wheels (1900g per pair incl. tyres) it rolls like a dream!

  • ^^ It's not the head tube or rake per se, it's mostly about the trail that results from the combination of those factors.

    This is probably the article you're thinking of, that mentions the touring bike characteristics:

    http://www.cyclingtips.com.au/2011/02/th­e-geometry-of-bike-handling/

    But it's not because they're used at slower speeds. The lower bottom bracket and longer chainstays improves their high-speed characteristics, not worsens them.

    I think there's a popular misconception that track bikes are better handling, or faster handling than road bikes. They're inherently less stable, but within such a range that it doesn't create problems for the rider.

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Current Projects chat and miscellany

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