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    1. Kit: Airfix, by (Yearly Subscriber) Jo NZ is online now
      Builder Last Online: Jun 2019 Show Printable Version Email this Page
      Model Scale: 1/12 Rating:  (1 votes - 5.00 average) Thanks: 7
      Started: 08-15-16 Build Revisions: Never  
      Supported Kit Bashed Attribution

      This very much comes under the heading of future projects, but I believe it can be built from the Airfix kit, with a scratch built 1/12 Birkin Blower Bentley single seater body. I've already found some 3D print files for the body, which even if not accurate, could be used as the basis for a body buck.

      Has anyone attempted it?

      1/12 Birkin Blower Bentley single seater-birkinbentley_1500-jpg


      1/12 Birkin Blower Bentley single seater
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  1. Jo NZ's Avatar Yearly Subscriber
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    Jo
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    Thanks for the feed back - I agree, and I've modified the angle that the fairing sits onto the body, and also moved the back of the fairing towards the centre of the body. See what you think...

    1/12 Birkin Blower Bentley single seater-img_2401-jpg

    1/12 Birkin Blower Bentley single seater-img_2398-jpg

    The headrest padding is cut from the rear seat

    1/12 Birkin Blower Bentley single seater-img_2400-jpg


    1/12 Birkin Blower Bentley single seater
    QUOTE QUOTE #32

  2. Jo NZ's Avatar Yearly Subscriber
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    Jo
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    The nose cowling is made in the same way as the body:

    1/12 Birkin Blower Bentley single seater-img_2410-jpg

    1/12 Birkin Blower Bentley single seater-img_2413-jpg

    1/12 Birkin Blower Bentley single seater-img_2415-jpg

    1/12 Birkin Blower Bentley single seater-img_2416-jpg

    1/12 Birkin Blower Bentley single seater-img_2418-jpg

    I'll do some more fine tuning to the shape when the latest layer of gloopy CA (used for filling) is dry...


    1/12 Birkin Blower Bentley single seater
    QUOTE QUOTE #33

  3. Jo NZ's Avatar Yearly Subscriber
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    I took a bit of a break from this, because when I cut out the last rib from the nose it warped - or so I thought. When I came back to it I made up a base to support the chassis, and discovered that the chassis is twisted, not the nose

    1/12 Birkin Blower Bentley single seater-img_2432-jpg

    1/12 Birkin Blower Bentley single seater-img_2433-jpg

    Having got the chassis straight, I permanently glued the nose onto it. I'll need to find a way to keep it straight now...

    1/12 Birkin Blower Bentley single seater-img_2434-jpg

    Some other bits and pieces - fairings on the body and nose, and the surround for the gear lever aperture

    1/12 Birkin Blower Bentley single seater-img_2438-jpg

    1/12 Birkin Blower Bentley single seater-img_2439-jpg

    1/12 Birkin Blower Bentley single seater-img_2437-jpg


    1/12 Birkin Blower Bentley single seater
    QUOTE QUOTE #34

  4. MODEL A MODEL's Avatar Yearly Subscriber
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    don
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    Hello there! I too have had this car in the back of my mind for a while. Your making pretty quick work of it so far. When you get to the engine, I believe that it had a modified oil pan, and the radiator opening was originally smaller, back when it was "Bluebird" blue. (Campbell's Bluebird) The plans I've seen show the chassis rails to be parallel. (Were they?) Also in some of the early photo there appeared to be an attempt at some "fairing" attached to the side of the rails at the brake lever. The top edge of the fire-wall has been roughly trimmed, and when it was first raced it had a built in windscreen. (Removed because Birkin couldn't see over it?) As it is now, it has the screen, but that's part of the latest restoration. Thank you for sharing, its looking very promising!
    QUOTE QUOTE #35

  5. Jo NZ's Avatar Yearly Subscriber
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    Thanks MaM!
    I've got a little confused over the modifications too. I thought that it was painted red in 1931, but other documentation I've got suggests 1932.
    To keep it simple, I was hoping to avoid scratch building the lever arm hydraulic shock absorbers on the back axle.
    I can only find photos of the "wind screen" (not the aero screen) with the smaller nose vent. - so I think in 1930.
    In 1932, I think the following mods were made:
    Handbrake fairing (again this makes it easier to build, I don't need to remake the brake linkages)
    Smaller blower (tried and discarded - a cylindrical air inlet was added to the nose and also removed)
    Hydraulic rear shocks, and meatier rear friction shocks.
    I want it to be red, but without the complex rear axle additions. Period photos are hard to find!

    In the meantime we have had a day of summer, although it's still blowing a gale. This is absolutely the worst summer that I can remember in Wellington!
    Anyway I took some outdoor pictures

    1/12 Birkin Blower Bentley single seater-img_2443-jpg

    1/12 Birkin Blower Bentley single seater-img_2444-jpg

    1/12 Birkin Blower Bentley single seater-img_2445-jpg

    1/12 Birkin Blower Bentley single seater-img_2446-jpg

    I needed some relief from fighting styrene 1/12 Birkin Blower Bentley single seater , so here's the steering link in brass. The hex screws are 00-90 1/12 Birkin Blower Bentley single seater

    1/12 Birkin Blower Bentley single seater-img_2440-jpg


    1/12 Birkin Blower Bentley single seater
    QUOTE QUOTE #36

  6. MODEL A MODEL's Avatar Yearly Subscriber
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    don
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    This is coming along nicely! and yes that rear suspension is a mystery! I also think that the tires you see now are smaller than those used originally. -This is going to be a beautiful build! Thank you for sharing! -Don
    QUOTE QUOTE #37

  7. JunkGTZ's Avatar VIP/Sponsor
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    Found this documentary on supercharged race cars. About 16 minutes in there is footage that I think has the Birkin Blower Bentley at Brooklands. Lots of great cars in this including the Bugattis and others. Enjoy.

    http://silodrome.com/documentry-supe...and-prix-cars/
    QUOTE QUOTE #38

  8. MODEL A MODEL's Avatar Yearly Subscriber
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    Thanks for the video! Boy! racing has come a long way!
    QUOTE QUOTE #39

  9. Jo NZ's Avatar Yearly Subscriber
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    The fairing for the handbrake (on the car for 1932)

    1/12 Birkin Blower Bentley single seater-img_2447-jpg

    1/12 Birkin Blower Bentley single seater-img_2448-jpg

    1/12 Birkin Blower Bentley single seater-img_2450-jpg

    1/12 Birkin Blower Bentley single seater-img_2452-jpg

    Still some filling and sanding 1/12 Birkin Blower Bentley single seater needed...


    1/12 Birkin Blower Bentley single seater
    QUOTE QUOTE #40

  10. Jo NZ's Avatar Yearly Subscriber
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    The handbrake fairing, looking better...

    1/12 Birkin Blower Bentley single seater-img_2466-jpg

    Next the exhaust manifold. At first, I tried to extend the kit manifold - but it isn't nearly wide enough, and won't exit outside the body

    1/12 Birkin Blower Bentley single seater-img_2396-jpg

    So it meant scratchbuilding one, using 7/32" brass tube. The tubing is annealed and bent over a 1.5" mandrel, using a bending spring inside the tube

    1/12 Birkin Blower Bentley single seater-img_2456-jpg

    A pinned joint...
    Incidentally I find that filing the pipe joints to fit the tube (fishmouthing) is really easy with a chainsaw file. There are five sizes - 1/8", 5/32", 3/8",7/32" and 1/4", they are dirt cheap, and exactly match the diameters of standard tube.

    1/12 Birkin Blower Bentley single seater-img_2458-jpg


    The manifold doesn't exactly line up with the exhaust ports, but as this model will be a curbside (the sheer size of it is awesome - a detailed engine would take away the shock factor) it only needs to look right outside the bonnet. I had made a jig to get the pipes exact, but decided not to use it in the end

    1/12 Birkin Blower Bentley single seater-img_2463-jpg

    The exhaust box is from the kit, as is the fishtail - cut down by 3mm

    1/12 Birkin Blower Bentley single seater-img_2464-jpg

    The exhaust box supports are from brass strip, bolted to the chassis with M1 screws

    1/12 Birkin Blower Bentley single seater-img_2461-jpg

    The acid test - does it look right from the front?

    1/12 Birkin Blower Bentley single seater-img_2462-jpg


    1/12 Birkin Blower Bentley single seater
    QUOTE QUOTE #41

  11. Jo NZ's Avatar Yearly Subscriber
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    Next, the exhaust clamp - it looks like this...
    1/12 Birkin Blower Bentley single seater-2431710-16653124-thumbnail-jpg

    Brass sheet and something from the scrap bin

    1/12 Birkin Blower Bentley single seater-img_2473-jpg

    Soft soldered together

    1/12 Birkin Blower Bentley single seater-img_2474-jpg

    Turned, drilled and milled (on my new mill and rotary table!)

    1/12 Birkin Blower Bentley single seater-img_2476-jpg

    And test fitted

    1/12 Birkin Blower Bentley single seater-img_2477-jpg

    1/12 Birkin Blower Bentley single seater-img_2478-jpg

    1/12 Birkin Blower Bentley single seater-img_2480-jpg


    1/12 Birkin Blower Bentley single seater
    QUOTE QUOTE #42

  12. MODEL A MODEL's Avatar Yearly Subscriber
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    don
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    Very nice! Bit by bit, keep at it and this will be a Great Model! -do the bolt heads or nuts get retaining wire? -Don
    QUOTE QUOTE #43

  13. Jo NZ's Avatar Yearly Subscriber
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    Quote Originally Posted by MODEL A MODEL View Post
    do the bolt heads or nuts get retaining wire? -Don
    I do hope not. I draw the line at corner drilling 1mm bolt heads (it's bad enough on full size bolts, with a jig) - and I haven't noticed any on the Bentley - yet....


    1/12 Birkin Blower Bentley single seater
    QUOTE QUOTE #44

  14. Roger Zimmermann's Avatar Yearly Subscriber
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    Nice looking model!
    QUOTE QUOTE #45

  15. MODEL A MODEL's Avatar Yearly Subscriber
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    don
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    Hello! I've gone through my photos, and nope! no retaining wire! (I've always got Bugatti's on the brain) -The bolts on the sump do have some but I don't know if that was a temporary fix, by someone? -This is excellent work and proof that finesse and determination are the best tools! Thank you for sharing your work, oh! what brand of mill and rotary table? Unimat I guess? (In my minds-eye I already see your model in red) Thanks for sharing, and for responding so quickly! -Don
    QUOTE QUOTE #46

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