Saturday, August 22, 2015

BSA A7 Daytona replica

This BSA A7 Daytona rep build was jointly inspired jointly by an image of ace tuner and factory development engineer Roland Pike with a Gold Star Daytona racer at the MIRA test track and a project on the now dormant Beezagent blog. Rather than an outright replica the machine is a homage to the 1956/7 A7 Daytona racers of which 200 rolled out of the Small Heath factory gates.

The frame was sourced from K & S who were building replica Daytona frames a few years ago. Other parts were autojumble finds. The forks are later and wear alloy yokes and the front brake is a lightly modded conical hub type. The bike was built up by Chris in the South of England and has so far acquitted itself well at a Cadwell Park track day. Must be a great fun bike to ride, the power to weight should give a few surprises to the guys on more powerful stuff. Many thanks Chris for sending in the pictures and details. 

Chris' BSA A7 Daytona rep.

An inspiration for the build. Roland Pike with BB32 Daytona
machine at the MIRA test track.

Starting point - K & S Daytona replica frame and original
BSA cases.

The project nearing completion.

BSA A7 Daytona with Triumph Trident shed-mate.



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10 comments:

  1. UnknownMay 5, 2020 at 1:19 PM

    Hi Richard is the bike for sale ?.
    Regards

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    Replies
    1. Richard MillerMay 7, 2020 at 10:14 PM

      Hi there. Sorry not my bike and not bumped in to the owner for a good while. I think he built it up as a keeper though.

      Delete
    2. UnknownMay 10, 2020 at 5:34 PM

      Well thanks for letting me know.
      I'll have to build one so I'm looking for a frame now.
      Regards from Martin.

      Delete
    3. AnonymousMay 8, 2022 at 11:14 AM

      Been trying to buy a frame for years but can't find k & s

      Delete
    4. Richard MillerMay 8, 2022 at 7:00 PM

      I'm not totally sure but I think Nick at K&S hasn't been trading for a number of years now.
      To be totally honest looking at the frame I would have thought that as long as you had a measurement for the wheelbase a local chop shop that specialises in hardtailing bikes would be able to adapt a standard B31 frame easy enough.
      I guess the original frames would be in 531 but I'm not sure that most folks would notice much of a difference between the standard and lightweight.
      Also, I'm fairly sure that K&S never actually did the frame building in house. If you could find who built for them they might still be able to knock one up.

      Delete
    5. ME DARTSeptember 21, 2023 at 11:05 PM

      This comment has been removed by the author.

      Delete
  2. AnonymousMay 17, 2022 at 1:18 PM

    thanks for your imput im thinking altering a a plunger frame to suit seems to have lots of the original style bends and twists

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    Replies
    1. Richard MillerMay 25, 2022 at 4:26 PM

      Obviously your project and your choice of starting point but I'd recommend a swinging arm frame as the donor if you are looking for authenticity because this is what the Daytonas were based on and the duplex down tube and cradle under the engine is fairly distinctive.

      Delete
  3. ME DARTSeptember 21, 2023 at 11:07 PM

    We, with over six decades of experience in crafting motorcycle frames, had the honor of being the original creator of the jig that Nick Simpson surreptitiously took possession of, along with a valuable cache of BSA GS components and other cherished race bikes. Armed with the factory blueprints for the frame and collaborating with experts well-versed in the frame's design, we poured unyielding dedication and meticulous effort into achieving unparalleled precision for our jig. To ensure top-notch quality, we employed CDI tubing in the construction of the six frames we meticulously crafted.

    The construction of these frames is a labor-intensive endeavor that requires considerable skill and expertise. Attempting to adapt them from an alternative frames would pose a formidable challenge, not to mention the inevitable compromise in their aesthetic integrity.

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  4. AnonymousDecember 19, 2023 at 6:48 AM

    I’m lucky enough to have Kenny’s original 101 frame, this was the prototype for the other 3 rigid A7s to be made for the 1954 Daytona race, from what I see of mine it is very unique, and being No101 it does vary in areas as so far as I can see in historic photos of mine compared to the other 3, of course the other 3 also vary slightly between each one also. I had researched these to the nth degree to try and get Kenny’s bike to what it should be.
    Good luck to the guy looking for one, I have had dealings with K&S an Myles among my researching.
    Thomas

    ReplyDelete