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It's Been a Long Time

Posted by Pugsley , in Kit Building, Adventures in S7 09 November 2014 · 2,385 views

It has indeed been a long time, not only since I actually updated this blog, but also since the 37 project started, all those years ago. It was never intended to take quite so long and I still can't believe that nearly five years have gone by! There haven't been any updates as I didn't want to put any more pictures up until I was happy it was finished.

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I'm pleased to say that the 37 is complete for now. It's taken a little while to get the lighting right, after its maiden running session a couple of weeks ago, a video of which can be found here:



It took a while to get it running as well as I'd like, the small pick-ups that I'd designed weren't quite up to the job, so I've installed some extra ones made of brass wire, which rub on the backs of the wheels. Although the pick up is only on 8 wheels, there are no problems with stalling, which is a relief.

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The motors are a little notchy at really slow speeds, but I think they're only 3 pole - I'm hoping that a bit of CV tweaking will mitigate that, if not cure it. In terms of the individual motors, the DCC chip has no problem with controlling them, it runs as if it's got a more conventional drive inside. One thing I have learnt though is that it behaves exactly like the real thing - if one axle breaks traction, it spins at high speed and takes the current from the other motors! Working sanders might be the next project ;)

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At some point in the future I'm going to build another set of bogies for it, taking the lessons that I've learned during this project, of which there have been many. The motor units themselves could be made more compact with different gearing, which in turn would lower the ride height, which is my only minor gripe at the moment - it rides about 1.5mm higher than it should. That's a long term plan, however, as I have several other things that I want to get on with first, the Cargowaggons being the main one at the moment.

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The only other work has been minor cosmetic works. I've designed, and 3D printed, inserts for the fire pull holes on the noses - I decided to go the solid route as they normally fill up with dirt, so you can't see through them. I also fitted the pull handles from Tom Harwin's excellent 37 detailing etch - if you've a 37 to build, get hold of one of these. I wish it was available at the time I was building the body of mine, but I'd already painted it by the time he'd finished it.

The only other significant alteration I've made is on the pipes - the tops and bottoms of the JLTRT cast pipes were cut off, and filed down to fit inside some small diameter silicone tubing, to give some movement and flexibility to the pipes. The tubing is pole float rubber, which can be obtained from angling shops, or ebay.

It's been an enjoyable project and definitely challenging at times, but then that's all part of the fun. On to the next challenge!
  • Like x 17
  • Craftsmanship/Clever x 16
  • Thanks x 2





Are you certain you didn't just shrink 37415?

 

As this is some fantastic work

The body ripples show to great effect in the pics Pugs. It really does look the part!

 

Cheers

 

Tom

Thanks both.

 

I'm fairly sure that shrinking the real thing would have been quicker! :D

 

Tom - the light has to be in just the right place to make the ripples visible, but I think it was worth the effort.

 

Looking at these photos, I think the marker lights could do with being a bit dimmer, thankfully that's just a matter of adjusting a CV.  The headlight could also do with being a touch brighter - that's going to have to wait until the body comes off for another reason though, as I'll have to change the resistor.

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Howard Smith
Nov 09 2014 21:41

Very nice Martin.

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Dan Randall
Nov 09 2014 21:47
Nice work Martin and well worth the extra work you put into it. Regards Dan
Fantastic. Congrats on getting it done, Pugsley. It may have been 5 years in the making, but there is as much effort in this as in a whole little layout, and noone would think twice about taking 5 years to build a layout.

Thanks everyone!

Beautiful work! :)

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Biased turkey
Sep 08 2016 23:24

Well done Pugsley, so many details.

Index

Finished projects in this index will only have a link to the first page - the links to the rest of the project will be on the first post.

 

General Stuff
Background - The whys and wherefores
Just transferring you now - creating custom decals.
Isn't the Internets Brilliant?!?

 

Kit building
Bratchell/Jim S-W Class 455/9 EMU 5908
1 - The start
2 - Bodybuilding
3 - Start of detailing

 

Britannia Pacific 07-275 tamper conversion/kitbash - DR73311
1 - Tampering

 

Adventures in S7
37415
Link for parts 1-12
Link for parts 13-24
Link for parts 25-36
Link for parts 37-46 (the end)

 

Mystery Project
Can You Tell What It Is Yet?

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