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The 1/50 project, cosmetic bogies

Dave John

Entry posted by Dave John in The 1/50 scale project

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How do you make a freelance bogie ? I started by looking at many photos and drawings of stuff built back then. That gave me a lot of ideas so I sat down, fired up the silhouette software and drew a lot of shapes. Cut them out and stick them together. Simple, inexpensive, but rather time consuming. Though I might argue that is the point of the exercise.

 

I also wanted to try the resin boltheads from Masterclub.  Airnimal uses them with excellent results, so I bought a couple of packs. A bit fiddly drilling all the 0.4 mm holes but having the silhouette mark them out is a great help. Thats all the little grey dots, but they are very detailed if you can get them in focus. I like them, I shall be using more.

 

 

A simple bogie.

 

 

1575126516_150bogie1.JPG.7c7773e71b36d5412d8e0e9ce9bd9822.JPG

 

 

 

Painted. I really didn’t want to kill the detail with a matt black, so I have gone for a very dark grey. Tamiya brushed over halfords primer with a few washes and a spot of powder to lightly weather it all.  Shows the compact nature of the n20 motor assembly, it it free to move on the springs and just gently constrained on a couple of foam pads.

 

 

1196419618_150bogie2.JPG.4320a67b715b1965bbcd6fff2cbf63fe.JPG

 

 

As Arthur Negus might have said, probably one of a pair.

 

 

 

1880445837_150bogie3.JPG.dd02d87d9c7168e642aebf146ddaf795.JPG

 

 

 

Sitting under the frames .

 

 

 

46520191_150bogie4.JPG.01397e8422f1a2d111c1d3055389c949.JPG

 

 

I reckon that looks reasonable. A fair bit of glueing, over 350 parts per bogie but repetitive patterns. I think that resin 3d printing would be the ideal method, though I’m still swithering over a 3d printer. I fancy the idea, but limitations of cost and living in a flat are still winning for now.

 

Ok, body next.

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Mikkel
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I reckon that looks reasonable.

 

I reckon you're right.

 

Looks like the larger scale is prompting you to add extra detail - or would you have done the same in 4mm scale? (genuine question).

 

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Dave John
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I think it probably is tempting me to more detail Mikkel. The brakegear components would be a lot smaller and probably too flimsy in styrene, those are right down at the limit of the silhouette. The 2mm modellers make some amazing things with etched metal but the cost is higher. 

I might buy some of the even smaller boltheads and see whether I can actually work with them in 4mm scale. 

 

One interesting question is that of the overall bogie design. I have built those like real bogies, frame round the outside, motors in the middle, mainly to avoid the whole gearchain to a body mounted motor thing. Others have tried it in the smaller scales with some success but the appeal for me was using the cheaply available n20 motor. That might be just a tad too large in a smaller scale. Of course the question is why bother given the variety of rtr available in 4mm. 

 

If anyone wants to think about it here are the n20 dimensions; 

 

444884327_n20dms.png.1c64af4eb1e40e80267d583169849a39.png

 

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Mikkel
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20 hours ago, Dave John said:

I might buy some of the even smaller boltheads and see whether I can actually work with them in 4mm scale. 

 

Can I ask where you got the Masterclub bolt heads? When you first posted I had a search to see if they did anything in 4mm scale but drew a blank. Mind you I couldn't find their own website, just outlets selling their goods.

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Simond

Thanks for the thoughts re N20 motors.
 

On a whim, I have just bought 4 of the 6V 42:1 versions, to use in my slightly off-the-wall rebuild of a Big Big Hymek.  A quick check suggests they’ll only get it up to around 50mph, rather than the prototypical 90, but they kind of fit with the ethos of the project, and they’ll easily fit within the bogies
 

it’ll be battery R/C, and so far has cost about 55 quid, half of which was the motors.  I have to turn the wheels, they’ll now need some kind of sleeve to fit  the N20 shafts, and axle ends to go in the axleboxes.  I have batteries, and I think I’ve got a Micron receiver that’ll do too.

 

not sure I’ll go to the lengths of detail your bogies have, but we’ll see.

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Dave John
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That sounds fun Simond. 

 

I went for the 118 ratio, I can't see me ever needing speed. Usefully Eileens  do a brass tube of 3.5 od , 3mm id which fits the n20 shafts perfectly. Should be loads of room for 2 per bogie in 7mm.

 

Actually, squinting at those bogies I made they do look a bit hymekky, though I didn't look at a hymek when I was thinking about them.  I actually had a big big hymek years ago, I swapped it together with some red track and a coach for a pair of rugby boots. Oh, the idiocy of youth ............... 

 

Look forward to seeing how you get on with it. 

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