Giles Posted March 26, 2020 Share Posted March 26, 2020 (edited) Having completed a the pair of 4mm Bedford TKs, which perform very nicely - I thought I would have a go at an artic of an appropriate period. Oxford do a nice Atkinson Borderer for reasonable money, so I ordered one to have a look..... 2020-03-25_04-25-47 by giles favell, on Flickr Edited March 26, 2020 by Giles 5 1 Link to post Share on other sites More sharing options...
Giles Posted March 26, 2020 Author Share Posted March 26, 2020 (edited) The underside before it was touched...... as I only have a couple of my precious 8mm gearmotors left, I wanted to use a 6mm type and see how that performs. I opened out the bore of the bevel gear in the lathe, and carefully glued it to the shaft using Devcon. 2020-03-25_04-25-30 by giles favell, on Flickr 100rpm 6mm gearmotor by giles favell, on Flickr After diff and other details were chopped out for bevel gear and gearmotor 2020-03-25_04-24-40 by giles favell, on Flickr Edited March 26, 2020 by Giles 4 Link to post Share on other sites More sharing options...
Giles Posted March 26, 2020 Author Share Posted March 26, 2020 (edited) With the diff gone, there was nothing to retain the new rear axle, so slits were cut into the chassis, and 1mm wire staples made and glued in to solve. Underside showing new 1.5mm axle in place with bevel gear, and laser-cut front axle. Servo is in position, with scratchbuilt horn from tube and sheet 4mm Atkinson by giles favell Edited March 27, 2020 by Giles 3 Link to post Share on other sites More sharing options...
Giles Posted March 26, 2020 Author Share Posted March 26, 2020 (edited) The servo only just fits in the cab - leaning back at an angle of 3-5 degrees, and requires a longer shafted horn than the supplied nylon ones, and one with a shorter throw. Once I got my head round this, fitting it was quite straightforward. The receiver will sit in the cab, and the battery will sit, disguised, on the front of the trailer, allowing two thirds of the trailer still to be used. On off switch and charging socket also go under the trailer. 4mm Atkinson RC by giles favell Edited March 27, 2020 by Giles 2 5 Link to post Share on other sites More sharing options...
Giles Posted March 26, 2020 Author Share Posted March 26, 2020 Almost finished - still got the brake lights to sort out. I had a couple of problems: 1. With the foreshortened servo horn (as shown), The steering lock was insufficient, so I replaced the horn with a longer one, dropping a fraction below the axle and with a longer throw. That sorted that, and I'm now very happy with the steering. 2. I used fine multi strand decoder wire to connect the trailer and unit (in place of the air hoses) this was not sufficiently flexible, and kept interfering with the articulation. I eventually replaced these wires with very fine wires from pre-wired LEDs. Sorted. Photos tomorrow. Link to post Share on other sites More sharing options...
Giles Posted March 27, 2020 Author Share Posted March 27, 2020 (edited) 2020-03-27_05-15-06 by giles favell, on Flickr The underside occupied..... The performance of this gearmotor is surprisingly strong, though the slow speed control is not as good as thesuperb unavailable K20. It is passable. Edited March 27, 2020 by Giles 5 1 Link to post Share on other sites More sharing options...
Giles Posted March 29, 2020 Author Share Posted March 29, 2020 (edited) Excepting a crate or tarpaulin to cover the battery, it is completed and working. I've replaced the rather heavy door mirrors with N/S wire assemblies, and drilled out the cast and silver-painted headlights, and filled the 'reflector dimple' with 5 minute epoxy to form lenses (I've also done the same job to the two TKs whilst i was at it). It manoeuvres about as well as the real thing with such a short trailer, and on the whole, I'm happy with it. I'm very surprised by the power of these little 6mm gearmotors, even though they're not quite as good as the K20s. I've done done very basic weathering simply to get the gloss off, but it would benefit from more attention. I'm aware that Stobarts like to keep their motors clean though! 2020-03-29_05-56-43 by giles favell, on Flickr 2020-03-29_05-57-18 by giles favell, on Flickr Edited March 29, 2020 by Giles 5 3 Link to post Share on other sites More sharing options...
PenrithBeacon Posted March 31, 2020 Share Posted March 31, 2020 I do love the gay abandon that you show when chopping up a perfectly innocent vehicle and then it all turns out right in the end! Super job Cheers 1 Link to post Share on other sites More sharing options...
Giles Posted April 2, 2020 Author Share Posted April 2, 2020 (edited) 2020-04-02_11-49-40 by giles favell, on Flickr Edited April 2, 2020 by Giles 7 2 Link to post Share on other sites More sharing options...
Red Devil Posted April 2, 2020 Share Posted April 2, 2020 Fantastic stuff! May I ask where the bevel gears come from? Link to post Share on other sites More sharing options...
Giles Posted April 2, 2020 Author Share Posted April 2, 2020 I get them from https://www.sol-expert-group.de/1-87-model-building/Screws-and-cog-wheels/Bevel-gears-M0-2-and-M0-3:::48_98_269.html 1 1 Link to post Share on other sites More sharing options...
Giles Posted October 22, 2023 Author Share Posted October 22, 2023 I've now rebuilt this trailer so there's a battery underneath now (220mAh) which improves its usefulness, but I also bought a second one off ebay and built a new trailer from nickel silver and using the wheels. This takes a 300mAh battery and is a scale 33ft trailer which was for years the normal maximum length for artic trailers. The unit is fully converted, just needing jumper wires. 7 2 Link to post Share on other sites More sharing options...
RMweb Premium peterm1 Posted December 20, 2023 RMweb Premium Share Posted December 20, 2023 On 02/04/2020 at 20:46, Giles said: 2020-04-02_11-49-40 by giles favell, on Flickr Only just found this thread... great modelling. I hope you've got a Gardner 180 or 240 badge for it. Done a few miles in these with rattly doors and longer trailers that are much easier to reverse. Link to post Share on other sites More sharing options...
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