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    1. Kit: Airfix, by (Active Member) IanB is offline
      Builder Last Online: Jun 2016 Show Printable Version Email this Page
      Model Scale: 1/12 Rating:  (2 votes - 5.00 average) Thanks: 4
      Started: 09-08-14 Build Revisions: Never  
      Supported Includes Transkit Attribution Build in Progress

      Hi all,
      Since my 2 current builds (both 1:72 scale WWI aircraft, which is my speciality) are on hold for parts, and I don't want to "start" anything new, I've decided to finally dig out the old Airfix kit that's been in my stash for over 30 years. I did make a start on it back then, but stopped due to lack of good references ( I was obviously not TOO dumb a kid!).

      This will be a long term build, as I intend to finish the 2 that are "in progress" before I get seriously involved in this one, but I will post updates as and when I get anything done.
      Since I now have a good few pics as referances and a pretty good build log to check up on from another modeller, I have made a new start on this one, and have spent the last 2 days cleaning up what I'd already done many years ago, and correcting the kit parts. I've got a fair bit done, but there are plenty more improvements needed before construction proper can begin, and that will probably wait until my Sikorsky Il'ya Muromets is finished (but that's another story!)

      Here's where I am now:

      The chassis: I've drilled out the front end, thinning the top and bottom parts of the chassis rails and extending the gap in the U frame further forward to where it should be...






      (since these pics were taken I've also removed the big doughnut that is supposed to represent the stearing rack mount).

      The stearing column: The bevel gear end was way too big, so I removed it, cut off the plug on the top and the bevel gear housing, thinned the housing by over 1/2, replaced the shaft with 9/32nd tube, chamfered at one end to blend into the stearing column, and reattached the other bits, blending them in with Mr Dissolved Putty Airfix 1:12th Blower Bentley with improvements (I hope....) .










      I think the lower part of the bevel housing that was cut off the original may be a little small, but it'll do.

      The firewall: I removed the moulded oil lines and the blank over the oil tank hole, the latter was replaced with card. The moulding for the throttle mounting was added from stock rod, glued together to get the right size, then sanded to shape. I added rod to the lower edge of the firewall where it meets the floor, then sanded it to the correct slanted profile to match the slope of the floor. 5 thou sheet has also been added to the rear of the firewall to give the correct smooth surface, and the flange around the edge. I also corrected the small lip on both upper corners which shouldn't be there.















      The floor: the hashed steel moulding has been removed, and the floor now needs to be narrowed slightly at the front - the sloped part is only between the firewall edges, not running right up to the bodywork.



      The fuel tank: a start has been made on stripping the moulded detail, wire mesh has been ordered to replace it.



      There are also some nuts missing on the firewall, I've ordered some and they're on their way!

      This is turning out to be very enjoyable!
      Any advice from you expert car modellers will be welcome, it's over 25 years since I built one and it was OOB Airfix 1:12th Blower Bentley with improvements (I hope....) ! Particular help will be needed for sources for wiring/plumbing materials, replacement resin Airfix 1:12th Blower Bentley with improvements (I hope....) nuts/bolts (I have some plain nuts on order but can't find castle nuts or dome nuts) and any other auto specific parts I may need (carb linkages?) all of course, in 1:12th scale.....

      Ian
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  1. ERA Chas's Avatar Active Member
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    Chas
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    A great start to an old favorite. You obviously have good reference and the skill to use it.
    Let the toy planes sit a while...
    Chas
    QUOTE QUOTE #2

  2. sjordan's Avatar VIP/Sponsor
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    Skip
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    For reference links and a look at how other builders did this kit, you might want to scan through the following thread:

    http://www.scalemotorcars.com/forum/...rns-or-does-it
    QUOTE QUOTE #3

  3. IanB's Avatar Active Member
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    Ian
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    Thanks for the link, that will be useful - it also shows how basic this kit is by modern standards!

    Another day spent destroying Airfix's best efforts....
    I took apart the engine (so most of what I'd done 30+ years ago has now been undone!) and opened up the gap that should be between the cylinder block and the valve gear drive train. Plastic stock has been added to fill the gaps left by opening that up and will be sanded to shape tomorrow.
    The front part of the floor has been corrected, and the horns, carbs, and tail lights drilled out. I've also cleaned off all the detail on the fuel tank except the fuel line connections to prepare it for the mesh stone guards.
















    This is proving to be more work than I'd anticipated, but enjoyable - it's so big!

    Ian

    PS here's one of my "toy planes" - it's 1:72 scale, scratchbuilt (about 6" long).... ;-)




    Airfix 1:12th Blower Bentley with improvements (I hope....)
    Last edited by IanB; 09-10-14 at 12:12 AM.
    QUOTE QUOTE #4

  4. IanB's Avatar Active Member
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    Ian
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    Not too much to report today, I've spent most of it trying to fill all the ejector pin marks Airfix 1:12th Blower Bentley with improvements (I hope....) and sink holes - the chassis frame parts, suspension parts, and drivetrain are FULL of them! Also sanding Airfix 1:12th Blower Bentley with improvements (I hope....) down the major parts ready for paint.

    I did get the engine back together and finished the mod to the front end. I added 5 thou sheet to the front and rear of the cylinder block to represent the plates that were bolted on, and removed the moulded on pipe along both sides.

    I also started to modify the suspension leaf spring hangers. The rear ones are done - simply drilled and cut out the middle part to leave the two side plates. The front ones were totally wrong so I've removed them and will add scratchbuilt parts when I come to fit the suspension.

    A quick dry-fit of the modified floor and firewall showed all ok there:





    The current state of the engine:



    Rear spring hangers, before and after:



    and the fuel tank ready for detailing:



    Thanks for looking in!

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #5

  5. IanB's Avatar Active Member
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    Ian
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    I've made a little more progress, waiting on my next delivery of resin Airfix 1:12th Blower Bentley with improvements (I hope....) nuts from Ted's Modeling Marketplace..... (the guy in my local hobby shop didn't even flinch when I asked him if he had resin Airfix 1:12th Blower Bentley with improvements (I hope....) nuts......) 8)

    The blobs representing the cylinder block nuts and valve drive train plugs have been removed and replaced, and I've added the sump bolts, but may replace them with slightly smaller ones. I also clipped off the 6 inlet manifold bolts at each end of the manifold which were far too long - they should be flush with the manifold itself. The nuts will be replaced when my next order arrives.




    The kit mounting for the water pump is also wrong - it's too high and sits where the fan bracket should be, so I've added a new one based on what I can figure out from pics - it may not be 100% accurate but at least it's in the right place. That also left me free to add the fan base and bracket and I've started to fabricate a fan assembly. (pic to follow on that one).




    I'm still not sure about the shape and size of the sump, but without definite evidence of this car, it will stay as it is. Airfix couldn't be THAT far off, so I'm assuming that this early race car was different from later road versions.

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #6

  6. IanB's Avatar Active Member
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    Ian
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    Hi all,
    A little more done on this one, although my main problem seems to be finding a problem, referencing pics to find out what should be there, then noticing something else and getting sidetracked! I need to concentrate on fixing the problem I started with, and the moving on to the new one later....somehow I don't think that will happen!

    I painted the firewall with Model Masters buffing Aluminium, then decided the inner part, which will be body colour, was too bad to paint (previous spraying with primer Airfix 1:12th Blower Bentley with improvements (I hope....) had "spat" and I couldn't get in too smooth it all out). So I removed the detail I'd added and cut a piece of 5thou card to drop in. The details were then replaced. I also corrected the central bracket mounting on the top edge which is a cutout on the kit and should be a raised part of the structure, and the bolt locations for the plating. The side ones were ok, but there was one missing on each upper corner (where the indents had been) and the top ones weren't spaced correctly. These have all been drilled ready for the bolts to be added when the painting's finished.



    The engine now has some paint (again buffing aluminium), and the cylinder block and nuts/bolts/plugs have been painted. I have some .5mm aluminium dome nuts for the side and end plates which will be added after the painting is finished.





    The other recent work has been on the fuel tank. I've added the straps on each side which will hold the wire mesh side pieces, and made up the mounting brackets from stock rod/strip with pins added from brass rod to ensure a correct fit to the chassis.



    I need to find a good match for the BRG, my first try is going to be Tamiya Airfix 1:12th Blower Bentley with improvements (I hope....) Imperial Japanese Army Green. It doesn't have to be exact as the colour varied a little from car to car, but it needs to be a very deep green so that colour might work.....

    Thanks for looking in!

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #7

  7. IanB's Avatar Active Member
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    Ian
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    Besides thinking about paint colour, I also got a little more done today - I cut out the fuel tank side screens from wire mesh and added the strengthening fillets around the tank mounts, although I'm not sure that the CA glue Airfix 1:12th Blower Bentley with improvements (I hope....) I used will hold them, I'll find out later!
    I wanted to get these and the lower /rear fuel tank screens done before painting the tank. I'll then fit them and paint the tank again. That should ensure there are no paint free "shadows" under the screens and straps that hold the rear screen in place.




    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #8

  8. IanB's Avatar Active Member
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    Ian
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    After three attempts at the lower stone screen, here's the final article:






    and a little more progress on the sidescreens and the leaf springs...





    Thanks for looking in!

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #9

  9. IanB's Avatar Active Member
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    Ian
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    I decided today to start to tackle the most daunting part of this build - rewiring the wheels!
    I had already spent a good while thinking about how best to go about it, so this morning I bit the bullet and went for it. Before I did anything, I used the kit parts to make a jig to hold the hub central and at the correct height relative to the rim, and marked the rim and hub so that they would align correctly.
    My main problem was figuring out how to accurately drill the holes: should I make a stencil? If so, how? It would also have to be reuseable.... I decided in the end to use the kit parts as their own stencils.... I snipped off the spokes from the outer rim, leaving the stubs at the end, and used those as guides. I drilled each hole from the rim side, and at an angle, to allow for as straight a run as possible through the rim. Initially I only drilled part way through, then trimmed off the stubs and cleaned up the rim. After that I finished drilling through.
    The hub was marked and drilled, one hole just each side of the mark, and correctly staggered front to back. Then it was a relatively simple job to cut small lengths of .020" steel wire and thread it..."relatively" simple being the operative word.....





    I must say, I'm very happy with the results, and even more so that I got it at the first attempt!

    Now I know my method works, I'll take step-by-step pics of the next wheel as it's done and post them so that anyone contemplating spending a few days doing this can at least save themselves some of the hassle!

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #10

  10. IanB's Avatar Active Member
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    I've never attempted anything like this before, so for those who may be contemplating it, here's how I went about it.....

    First, the jig -it's pretty basic. A piece of stiff plastic card stock (about 2mm) with a hole drilled to accept a length of 2mm (.080") rod. I placed the wheel on the rod and pushed it down so that the rim was on the card, then cut the back off the rod and glued it in place. This made sure that the hub was at the correct height relative to the rim. A few pieces of .010" card were added around the spindle to take up the slack and stop it wobbling as the hub was not flush with the card. With the wheel sat on the spindle I then glued 4 pieces of thick rod to the card, pushed up tight against the rim, to hold it in the correct place.



    Next step was to mark the rim and hub to ensure correct alignment. (I brushed some white paint on first to make it easier to see the marks). The first mark is any one of the pairs of spokes where they meet the hub (the larger hub mark in the pic). Next, mark the rim opposite this mark, on both sides of the hub, to ensure correct alignment (notice that the rim marks are between the spokes). Then mark the outer ends of the two spokes that start at your hub marking - one I marked "top" and one "bottom". These two marks should be the third spoke either side of your rim datum mark.



    You're now ready to cut the moulded spokes out, but make sure you leave the nipples at the rim - these will be your "stencil" for drilling the holes! Here's one I prepared earlier..... (sorry, I've been waiting years to say that - "Blue Peter" fans will understand))



    I am going to use .015" (.38mm) wire, so I used a .018" drill bit to drill the holes for the spokes. Drill from the rim side (the back) and make sure you don't drill perpendicular to the rim - for the top (inner) row the bit should point clockwise, for the back row, anti-clockwise. This will ensure that the spokes slide in easily and don't bow, which they will if the holes are perpendicular to the rim.



    I didn't drill all the way through at this point, and here's why: Once you've drilled all the holes (make sure they are deeper than the nipples on the rim!) you need to remove the nipples and clean up the rim. There is a nasty mould line there that also needs to be removed.



    This will of course fill up the holes you just drilled, so now you can go ahead and finish drilling through.



    You're now about 2 1/2 hours in.... time to drill the hub: If you're looking at the edge of the hub ready to drill, the top row should be slightly to the right of the marks you made previously, with the bottom row slightly left. Drill these holes perpendicular to the hub edge.



    Once that's done, the hard work is over - time to start lacing! Bend one end of each spoke to about 45 degrees to fit into the hub holes.
    Start with your reference marks, then add the bottom row all the way around - they will fit into every other hole around the rim, make sure that you are following your reference mark and fitting the bottom row of the hub into the bottom row of the rim - notice from the earlier pics that the rim holes are staggered! After 6 or so, the hub will stay in position. (I removed the wheel from the jig to slide each spoke through the rim from below, then just slid it back on to the jig to fix the spoke to the hub with a tiny dab of CA gel on the spoke end).



    About 5 hours after you started (assuming you used a pin vice like I did) you'll be finished! Half of one wheel done!



    As you can see, the second wheel (with the thinner Airfix 1:12th Blower Bentley with improvements (I hope....) wire) is much more to scale, so I shall rewire the first one, and stick with the .015" wire for the rest.

    Time for a beer!

    Thanks for looking in!

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #11

  11. IanHenry's Avatar Active Member
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    Many thanks for the tutorial Ian, very much appreciated.


    Ian
    QUOTE QUOTE #12

  12. IanB's Avatar Active Member
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    You're welcome, Ian. I know I'm not an expert in this field, but if anything I've learned can help anyone else attempting something similar, it's worth it!

    A couple of notes to add to the earlier post:
    You will need two jigs - the front wheels have a larger hole for the axle than do the rear and spare wheels. I found that .100" (2.5mm) rod with a couple of small strips of .010" (.25mm) strip on opposite sides kept the front wheels snug on the jig.
    Don't glue the spokes into the rim until all spokes are fitted. Then add a dab of liquid CA to secure them in the rims, clamp them to the jig, and when it's dry, snip off the ends with end snips.

    For the outer set of spokes, I marked everything the same way.

    The hubs are too big, so after marking, trimming and cleaning up, I glued them to the rear hubs and left them overnight to dry. They were then placed on the jigs I'd used for the rear set of spokes and sanded down to the same diameter as the rear hubs. They were then drilled for the spokes.

    Hole number 700 is finished! No more drilling! (yes that is 700 - 70 spokes per wheel, 5 wheels!)



    Here is the set of 5 wheels, all drilled, with the front hubs fitted and sanded, and the front rims fitted. I will now play with some paint mixes, paint the wheels as they are, then fit the front row of spokes.



    I need another beer....or two! :o

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    Last edited by IanB; 11-20-14 at 12:03 AM.
    QUOTE QUOTE #13

  13. IanB's Avatar Active Member
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    The biggest problem I'm coming up against with working on an unfamiliar subject, in an unfamiliar scale, is planning!
    I thought I was about ready to start getting some paint on this, but I then realised that I had more work to do on the firewall, steering column, and leaf springs. I added the nuts on the leaf spring shackles, and then decided that I needed a different approach to the firewall so that I didn't have an untreatable joint when I put it all together. I therefore cut the front part of the floor off, and attached it to the firewall, added some stock sheet to cover the joins, and filled and sanded as necessary. Much better!
    I then decided I wasn't happy with the part I'd added for the throttle bracket mounting, so I removed it and remade it, slightly bigger. I'm now happy with that and have redone the aluminium paintwork. Now I am not happy with the circular blanking plate over the oil tank so I'll repaint that later!
    The petrol and oil header tanks have been added, as well as a new steering column mounting bracket on the rear of the firewall. The end bolts have been added to the steering column and a little more clean up done on that too.





    Finally I made up the remaining 140 spokes needed and have prepared them for painting...



    I'm hoping that by painting the spokes first, all that will be needed when the wheels are complete is a little touch up......we'll see.......

    Thanks for watching....any pics or details of the fuel and oil lines and where they run would be more than welcome....

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #14

  14. IanB's Avatar Active Member
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    Slow but steady.....
    I've put a wash on the engine to tone it down a bit and make it look a little more used - just some pastels applied with a damp brush and worked until there were no more streaks or brush marks. Also painted some of the ancillaries, (pipework and such), which still need a wash to weather them a little.
    Here's one of the magnetos:



    I then decided that my interpretation of the water pump mount was wrong so pulled that off, cleaned the area up and made a new mount - which also meant I had to remake the pump outlet pipe as I'd shortened it to fit my modified mounting point...the inlet will have to wait until I have the radiator mounted and can figure out the shape and length.
    I also figured out (I think) how the oil pump is mounted and will work on constructing that next and adding it to the rear of the firewall before I paint that piece. The hole in the rear upper centre of the firewall (for wiring) has also been cut out.
    I did actually try to make a start on painting, and started masking Airfix 1:12th Blower Bentley with improvements (I hope....) the aluminium parts on the front firewall face but it peeled the aluminium paint off so I'll have to rethink that, too!
    Just to show myself that I have been making progress, I dry fitted the engine, gearbox and firewall.....the gearbox needs a shaft added to the side for the shift lever, which means a hole in the floor, etc, etc.....










    Apart from that, I've spent a lot more time trying to find more pics and details. I came upon a goldmine of parts pics at Vintage Bentley Parts Ltd, which has helped a lot on figuring out how the pedals were mounted...





    So... the plan....make and fit the oil pump, brake compensator shaft, and brake pedals, and get some paint on it all! We'll see how that pans out.....

    Thanks for looking in!

    Ian


    Airfix 1:12th Blower Bentley with improvements (I hope....)
    QUOTE QUOTE #15

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