Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    keepitoiled
    Join Date
    Jan 2006
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Thermal Bonding epoxy construction

    I was wondering if the Thermal bonding epoxy Method used by Raleigh USA is being done anymore.

    I Understand it was a reliable technology.
    ridefor6

  2. #2
    Senior Member Kustomz's Avatar
    Join Date
    Sep 2002
    Location
    Kansas City
    Posts
    90
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    So what exactly is involved in the process.......... basically lug construction using glue?

  3. #3
    keepitoiled
    Join Date
    Jan 2006
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Correct, lugged frames of aluminum and steel thermally " glued " together. From what I understand from past recollection is that it is an Epoxy based thermal set.

    I purchased a Raleigh Technium in 87, assembled with this technology. and it was explained to me by the LBS owner.

    I have used Structural adhesives to bond Electric Motor frames and the technology has advanced and become common in industrial and commercial applications.

    LOCTITE is a major mfg of industrial adhesives.
    ridefor6

  4. #4
    Senior Member bellweatherman's Avatar
    Join Date
    Aug 2005
    Location
    Austin
    My Bikes
    Too many to count
    Posts
    2,070
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The problem with epoxy bonding is that nobody does it anymore. It's just not a popular choice. Back in the semi-old days of gluing carbon and even aluminum frames, bonding the tubes to thick aluminum lugs was the radical shiznitt for alternative builders. But, now carbon builders are doing it more monocque style.... oh wait a minute. I take that back. You can buy Deda or Columbus carbon tubes & lugs and glue them up yourself. Though, not sure about the thermal part. I don't think the new glues of today require you to heat them up.

  5. #5
    Senior Member Kustomz's Avatar
    Join Date
    Sep 2002
    Location
    Kansas City
    Posts
    90
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It seems to me that the epoxies used in golf club shafting should suffice just fine for tube and lug bike construction, anybody tried it? What am I missing..........

  6. #6
    Senior Member Alexi's Avatar
    Join Date
    May 2004
    Location
    Boston
    Posts
    814
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    anyone know where you can get the carbon lugged tubes sets?
    I pour pot in the birthday cake
    So what! Say what! For my own sake

  7. #7
    Dog is my co-pilot 2manybikes's Avatar
    Join Date
    Jun 2003
    My Bikes
    2 many
    Posts
    13,915
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by clancy
    Correct, lugged frames of aluminum and steel thermally " glued " together. From what I understand from past recollection is that it is an Epoxy based thermal set.

    I purchased a Raleigh Technium in 87, assembled with this technology. and it was explained to me by the LBS owner.

    I have used Structural adhesives to bond Electric Motor frames and the technology has advanced and become common in industrial and commercial applications.

    LOCTITE is a major mfg of industrial adhesives.
    Some of them (Techniums) come apart.
    [SIGPIC][/SIGPIC]

  8. #8
    Banned
    Join Date
    Aug 2005
    Posts
    5,117
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If you do this you definetly want to post cure with heat, but it doesn' thave to be too high, and sometimes can be reached in places like attics or the back of your car. The heat can be applied after the initial set-up, even weeks after, and the effect is the same.

    Could be useful for bamboo.

  9. #9
    Industry Maven Thylacine's Avatar
    Join Date
    Oct 2003
    Location
    Wherever good bikes are sold
    My Bikes
    Thylacines...only Thylacines.
    Posts
    2,936
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Every carbon bike on the planet is bonded. Some epoxies cure at room temperature, some require heat.

    What was the question again?
    Have you earned your stripes? <<click here / Questions about custom frames? Chat me! - warwickg71 (AIM/iChat) ThylacineCycles (Skype)

  10. #10
    keepitoiled
    Join Date
    Jan 2006
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Golf Clubs, good example, Mine always break at the shaft but never come off.

    It seems that bonding may be a cost effective alternative. dependant on the cost of the adhesive vs traditional brazing supplies and equipment.

    It may also allow more casual builders to construct without investments in equipment and the skill required to braze.

    Concerns about weakening the tubing due to overheating may also be a benifit.

    I will ask some engineering folks I know about this as I have time.
    ridefor6

  11. #11
    Senior Member Kustomz's Avatar
    Join Date
    Sep 2002
    Location
    Kansas City
    Posts
    90
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If this is a viable method, then I'm definately in. I use Dynacraft products for club making and an epoxy supply will last a long time and requires a very small amount.
    http://www.dynacraftgolf.com/Dynacra...alog/10/EPOXY/

Posting Permissions

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