User Tag List

Page 15 of 28 FirstFirst ... 5678910111213141516171819202122232425 ... LastLast
Results 281 to 300 of 546

Thread: Llewellyn Bikes

  1. #281
    Join Date
    Mar 2015
    Location
    The First World
    Posts
    50
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The story of a new Llewellyn frame model with no name Part 5

    Lookin' good Dazza.

    Surprised you didn't opt for a Paragon T47 bottom bracket.
    Warwick Gresswell • Bicycle Designer, Raconteur and now.....Framebuilder.
    Wolgich Composites
    BCBA - Bespoke Carbon Bicycles Australia - Facebook Group

  2. #282
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The story of a new Llewellyn frame model with no name Part 5

    The client's desires are also a factor in choice.

    A friend of mine said to me

    "Threaded BB shells, silly idea, it will never catch on"


    Quote Originally Posted by CarbonNeutral View Post
    Lookin' good Dazza.

    Surprised you didn't opt for a Paragon T47 bottom bracket.
    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  3. #283
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default is this Part 6 of Colossus ?

    3 March 2016
    Then it was time to cook the frame set up. Clean all joints, now this takes more time than many would care to think it does. Check all the fits with a fresh eye and file touch here and there is required. Load the tubes into the jig all fluxed up. Tack and then remove to the inspection table. I don’t take many pictures of brazing and such like (however in other albums there are plenty) because I keep on task and concentrate. A false move, a wee mistake can be fatal to good alignment or even destroy the materials, either of which is a depressing thought. When one puts a lot of detail content into a frame set it can mean many days of work going belly up if a mistake is made, a wee bit less tragic for builders of frames with less labour content but none the less, for any builder a stuff up is a big heart ache and many days of $ earning and materials can be lost. Oh, yeah, I have been there too often!
    The braze up went as expected, large thin tubes that exceed the 30 to 1 ration of diameter to wall by a long way distort a fair bit. Now I in all genuine frankness, my maximum tolerance for HT to ST tolerance is a total of .30mm from one end of the HT alignment rod to the other end. That is .30mm (.012”) over a span of 400mm. (15 ½”) Not many builder’s speak of tolerances, because they don’t have any or don’t care. From HT to Dropout face is also .30mm.




    One cannot do any cold setting of a main frame triangle with such large thin tubes, the frame will crumple before it yields. Meaning, grunt it back into alignment. However I had anticipated this and I have machined the head set alignment inserts with .15mm eccentricity. I fit them and rotate them inside the head tube till the fork axis (alignment rod) is inside the tolerance. I aimed at .10mm., then brazed them in permanently and the end result was .15mm. Happy chappie am I ! After I brazed the main triangle I did some fillet finishing work because it easier and safer to do before the stays are added.




    More jigs had to be made to fit around the big tubes. This takes a day here and day there, first to think it out and then make the thingies! Simple lathe and mill work. One such item is this jiggy to do the DT braze on bosses.







    This little boss was the first part I designed by 3D CAD ten years ago. This Llewellyn part is used by many builders around the world since then. Naturally for me it is cast in stainless steel to avoid corrosion from battery acid perspiration.

    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  4. #284
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: is this Part 6 of Colossus ?

    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  5. #285
    Join Date
    Aug 2011
    Location
    Beechworth, VIC
    Posts
    1,772
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default Re: is this Part 6 of Colossus ?

    Quote Originally Posted by Dazza View Post
    One cannot do any cold setting of a main frame triangle with such large thin tubes, the frame will crumple before it yields. Meaning, grunt it back into alignment. However I had anticipated this and I have machined the head set alignment inserts with .15mm eccentricity. I fit them and rotate them inside the head tube till the fork axis (alignment rod) is inside the tolerance. I aimed at .10mm., then brazed them in permanently and the end result was .15mm.
    Dazza

    That's such a smart solution to that problem. Serious kudos.

  6. #286
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: is this Part 6 of Colossus ?

    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  7. #287
    Join Date
    May 2009
    Posts
    5,171
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: is this Part 6 of Colossus ?

    holding steady for the seatpost clamp
    -Dustin

  8. #288
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: is this Part 6 of Colossus ?

    Another half day was making the unusual size clamp for the seat tube which is used to hold the frame while the key hole slot is cut with a slitting saw in the little mill.



    Bridges are brazed in and all is checked with a 28mm tyre.



    A parcel of the first samples of the M5 seat binder boss arrived this week from LongShen in Taiwan.
    Shirley and Allan have been in the business of making castings for frame builders for many years and I visited them in 2005 and have a good working relationship with them for over 10 years.









    The location holes are drilled for the pins on the bosses




    Makes location simple and accurate.





    the Kiwis do the UK beat
    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  9. #289
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    Back to some details. I am not a fan of those clear adhesive patches used to try and prevent cable casings rubbing the paint off. Most owners never change these pads until they notice that the casing has rubbed through the plastic patch and chaffed the paint, then it is too late. Might as well leave them off

    Or








    The fork is not to be forgotten. I am using the Columbus Grammy 1.5” fork to start with.







    I am working on ideas for a new fork crown using MAX fork blades for a steel fork option, which I really think would be super, but it is fair way down the path before that might or could eventuate. Funding that one requires some funds……………..
    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  10. #290
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    So all is brazed up and then the final finish work is done







    The new front derailleur braze that I did some critical dimension work for a chap in Europe is super. I give it the polish, no paint marring. I like all to be neat and tidy for many years of riding.



    More finish work, slow and careful. Takes a lot more time and effort to do this compared to TIG.
    Good TIG work requires a lot of skill, but the reason it works well is it is fast and zero finish work. I like fillets for structural reasons and also for the aesthetic, which is well admired.
















    All is done.





    Stay tuned for pics of the painted frame, but that is some weeks away.
    Then the full assembly of the bike with DuraAce 9000 and off with this bike to the Bristol Bespoke show.
    Oh and yes I am taking orders for this frame to answer the questions put to me of late, but only a limited number each year. About ten each year, I have 5 spots left for this year. Some seem keen and this frame is yet to roll down the road!



    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  11. #291
    Join Date
    Mar 2009
    Location
    worlds biggest island
    Posts
    1,694
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    I know it's not your doing Dazza but faaark that crown for headset bearing on that Grammy fork looks rough as guts
    Bill Fernance
    Bicycle Shop Owner
    Part Time Framebuilder
    Bicycle Tragic

  12. #292
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    Quote Originally Posted by progetto View Post
    I know it's not your doing Dazza but faaark that crown for headset bearing on that Grammy fork looks rough as guts
    YEP! A point I am taking up with Columbus. It had lumps of epoxy which I smoothed off and I will fill with epoxy and smooth over. It just the OD of the seat that was rough. I was hoping some one would spot this. Nothing beats a metal crown race seat that is turned to size with single point tool in line with the steering axis. As good as the steering axis can be.
    However the world demands it to be lighter, faster to make, cheaper and the details of what is good is lost.
    In my perfect world I would want a machined crown race seat, rather than a molded one.
    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  13. #293
    Join Date
    Nov 2012
    Location
    Highland Park, IL
    Posts
    2,879
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    Dazza,

    Beautiful work, thanks for taking the time to document. Punters' questions to follow:

    I really like the aesthetic of the large diameter tubes. On the other hand, is this bike likely to be "block of wood" stiff for a normal MAMIL (riding around at say 200-270 watts), or do the thin wall thicknesses provide some flex that might increase the responsive feel for one of weaker wattages?

    Similarly, is this significantly heavier than a similar build with something like the PegoRichie tubes?

  14. #294
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    Quote Originally Posted by dogrange View Post
    Dazza,

    Beautiful work, thanks for taking the time to document. Punters' questions to follow:

    I really like the aesthetic of the large diameter tubes. On the other hand, is this bike likely to be "block of wood" stiff for a normal MAMIL (riding around at say 200-270 watts), or do the thin wall thicknesses provide some flex that might increase the responsive feel for one of weaker wattages?

    Similarly, is this significantly heavier than a similar build with something like the PegoRichie tubes?

    I am not a believer that stiffer is faster, less power absorbed from the pedal pressure on its way to twisting the rear hub. If it was so, we could easily make frames as stiff as a block of granite.
    However some clients desire or have a strong fetish for STIFF.


    There is more material in Colossus than any standard Columbus OS tube set selection. There is more material than XL (DOS) tube sets, there is more tube material than a Columbus MAX tube set. I have used MAX chainstays and 18mm seat stays compared to MAX's squashed 16mm seat stays. The TT of Colossus is 35mm in diameter which is the same size as a MAX and XL DT. It will be stiff. How much flex in the fork blades is the ????
    This frame weighs 2020 grams which is the same as a MAX frame set with lugs.
    That will be about 200-300 grams more than a OS tube frame set.
    The Grammy fork is much lighter than a steel fork for the OS frame, by about 300 to 400 grams so all up gross it will be on par with an OS or XL frame set.
    I built Dr Brian a Crescendo XL frame set 10 years ago. That lugged frame with bigger tubes than OS was 1780 grams.
    His Colossus prototype weighs in at 2050 grams with a 1.5" Grammy fork @ 310 grams
    A OS lugged frame is typically 1750-1850 grams with a 1" steel fork at 650 to 750 grams
    so in all, the same! (because of the light fork)

    If I or others were to do a steel fork I have no idea of the weight, might be 800 grams.


    For some good stuff, go here for a read

    http://www.velocipedesalon.com/forum...ize-21480.html
    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  15. #295
    Join Date
    Nov 2009
    Location
    Brisbane, Qld. Australia
    Posts
    2,274
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    I can attest that the frame in ones hands feels quite substantial. Makes picking up the XL frame I just finish feel 'skinny'. I have no doubt this bike will be stiffer than just about anything around. I'm on the same page as Dazza with regards to frame stiffness as well. too stiff and the bike looses all positive road feel and feed back.
    __________________________________________

    "Even my farts smell like steel!" - Diel

    "Make something with your hands. Not with your money." - Dario

    Sean Doyle

    www.devlincc.com

    https://www.instagram.com/devlincustomcycles/

    https://www.flickr.com/photos/139142779@N05/

  16. #296
    Join Date
    May 2009
    Location
    NYC
    Posts
    1,949
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    Quote Originally Posted by Dazza View Post
    I am not a fan of those clear adhesive patches used to try and prevent cable casings rubbing the paint off. Most owners never change these pads until they notice that the casing has rubbed through the plastic patch and chaffed the paint, then it is too late. Might as well leave them off

    Or



    Cot day-um, that is brilliant!
     

  17. #297
    Join Date
    Dec 2012
    Location
    Asheville, NC
    Posts
    274
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: is this Part 6 of Colossus ?

    Quote Originally Posted by Dazza View Post

    That boss is BOSS. Are they going to be available to other builders soon?

  18. #298
    Join Date
    Jul 2008
    Location
    Down under
    Posts
    1,569
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: is this Part 6 of Colossus ?

    Quote Originally Posted by Todd Mosley View Post
    That boss is BOSS. Are they going to be available to other builders soon?
    Yes, these little fellas will be available some time in May. Note: This M5 boss is for the 33.5mm external butted portion of a 32.7mm seat tube. A 31.60mm seat post fits this tube.
    Cheers Dazza
    The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
    Nick Cave

    www.llewellynbikes.com
    The usual Facebook page
    https://www.flickr.com/photos/llewellyncustombicycles/
    Darrell Llewellyn McCulloch

  19. #299
    Join Date
    Feb 2013
    Location
    London, UK
    Posts
    4,488
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    Quote Originally Posted by progetto View Post
    I know it's not your doing Dazza but faaark that crown for headset bearing on that Grammy fork looks rough as guts
    The Falz has an aluminum cap on the crown which allows for precision machining for alignment of the headset crown race. Some other forks use carbon for this which cannot be machined as precisely and thus can reduce the precision and longevity of the headset....
    good ol' Dario.

    And I was sure Dazza won't overlook those Grammy forks
    Andrea "Gattonero" Cattolico, head mechanic @Condor Cycles London


    "Caron, non ti crucciare:
    vuolsi così colà dove si puote
    ciò che si vuole, e più non dimandare"

  20. #300
    Join Date
    Feb 2013
    Location
    London, UK
    Posts
    4,488
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default Re: The Legend of....................... Colossus

    Quote Originally Posted by Dazza View Post
    ...



    ....
    That stainless tab is a perfect example of a neat job.
    Bravo!
    Andrea "Gattonero" Cattolico, head mechanic @Condor Cycles London


    "Caron, non ti crucciare:
    vuolsi così colà dove si puote
    ciò che si vuole, e più non dimandare"

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •