Lumsdonia R&D Dept Workbench

Have any questions or tips and advice on how to build those bits that don't come ready made.
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TimberSurf
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Re: Lumsdonia R&D Dept Workbench

Postby TimberSurf » Sun Dec 03, 2017 9:52 pm

Carnehan, it's easy to miss read what you said, as not quite what you meant. Obviously I did. As for the 'shop', I have just looked it up and discovered that you are spot on! It is indeed an Airfix/Dapol 'General store', not that I knew it existed, until now. As I didn't recognise it from memory of Airfix/Dapol range and it came with several other (quite definitely) continental kit built buildings I purchased on eBay, I assumed it was too. I offer my most sincere apologies to you Paul. Daum, I would not have used it, if I had thought it was that instantly recognisable :oops: :roll: !
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carnehan
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Re: Lumsdonia R&D Dept Workbench

Postby carnehan » Mon Dec 04, 2017 8:14 am

Timbersurf, no harm done. Turning thoughts to prose is fraught with the possibilities of being misinterpreted. In this case that's what's happened. It's an excellent build you've produced and that kit looks the part attached on to your scratchbuild.

Paul

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Re: Lumsdonia R&D Dept Workbench

Postby TimberSurf » Sun Dec 10, 2017 11:34 pm

So the three buildings are more or less done, the base board is painted, I have decided to mount the buildings on the board with self tappers so that maintenance can be done later. Now on to the exciting bit, an animated car lift, nah, two! First problem, a quick trial showed that the car or minivan would hit the lights! :o Hmmm.......
So now the garage is getting a lift of about 10mm by addition of a brick skirt around the bottom. This means the office is floating in air! So a ramp and a 'mound' will need to be created around it, hohum, just makes it more interesting cus it ain't all on the flat! :D . Also means steps required inside to go up to the internal connecting door to the office.
So that means I can start looking at the lifts. One will be a central hydraulic piston type made from a telescopic magnetic pick up wand, but I will start that second. The first will have four posts and be the pulley 'n' ropes type (not that it will have either). I deemed plastic too weak, so I will have to venture for the first time into brass! :shock: To be honest, I am scared stiff. The engineer in me knows I need a milling machine to make a very square jig, to assemble the frame around. No acces to a miller, so bodge jig only, possible. Seems like a lot of work for a one off. So in at the deep end, worth a punt to create freehand so to speak, with risk of complete failure costing a few pounds worth of brass. The mechanism will have a base frame with four tubes sticking up like a table. Smaller tube will slide inside. Additionally, U section will extend up above the board to conceal the rising tubes. A moving frame will hold the four small tubes rigid, that will be the part that is actuated. I am happy to report the fixed frame with four tubes is built and square, and I am half way through making the moving frame. Pics to follow
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railwayjim
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Re: Lumsdonia R&D Dept Workbench

Postby railwayjim » Mon Dec 11, 2017 9:37 pm

It all sounds really interesting TimberSurf, working lifts, will you be powering using servos
or have you something else in mind, always fancied working level crossing gates
using servos, but it never gets further than the thinking about it stage :wink:

JIm.

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Mountain
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Re: Lumsdonia R&D Dept Workbench

Postby Mountain » Mon Dec 11, 2017 11:55 pm

You have given me a future idea! :D

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End2end
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Re: Lumsdonia R&D Dept Workbench

Postby End2end » Tue Dec 12, 2017 12:56 am

Not sure how they work but there's an excellent car showroom here @ 12:02...
https://www.youtube.com/watch?v=LwJ3mxh-oaI
Spinning car platform and working car lift. :)

The whole video is moving items on/for a railway layout
Here is the 2nd video too - https://www.youtube.com/watch?v=pVzFH6csBhQ

There is a 3rd video but I cannot seem to find it.
Thanks
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TimberSurf
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Re: Lumsdonia R&D Dept Workbench

Postby TimberSurf » Tue Dec 12, 2017 7:59 am

railwayjim wrote:It all sounds really interesting TimberSurf, working lifts, will you be powering using servos
or have you something else in mind, always fancied working level crossing gates
using servos, but it never gets further than the thinking about it stage :wink: JIm.

Yes I will be using a servo, not sure what will drive it yet, either build a 555 circuit or may adapt an off the shelf tester box.
Don't think! Just do!

E2E, yes, I think that video probably gave me inspiration, there is another elsewhere, but both "obscure" the mechanism which is at the back, my intent is to have a clear view through to the back, so much more realistic.
P.S. Probably me you got those vids from! Best inspiration videos :roll:
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End2end
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Re: Lumsdonia R&D Dept Workbench

Postby End2end » Tue Dec 12, 2017 11:35 am

Erm....oh yeah. :oops:
Thanks
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TimberSurf
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Re: Lumsdonia R&D Dept Workbench

Postby TimberSurf » Tue Dec 12, 2017 11:02 pm

So tonight I soldered the other half of the lower frame together
Garage Four Lift Split.jpg
Garage Four Lift Split.jpg (27.8 KiB) Viewed 57 times


and left is down and right is up
Garage Four Lift down-up.jpg


and here is the ramp that will be fixed to the top of the thinner tubes, that go up and down, inside the u shaped slots as below
Garage Four Lift leg.jpg
Garage Four Lift leg.jpg (17.77 KiB) Viewed 57 times

I must be mad!
Ironically, for all the lack of sophisticated jigs, it is a surprisingly smooth action!
So now to work out how to make a crank and fix the servo motor to the fixed frame :?:
Attachments
Garage Four Lift Ramp.jpg
Garage Four Lift Ramp.jpg (10.34 KiB) Viewed 57 times
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Lumsdonia <--- Hit link to go to my website for full story and wiring advice!

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TimberSurf
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Re: Lumsdonia R&D Dept Workbench

Postby TimberSurf » Thu Dec 14, 2017 11:01 pm

Experiments with 9g servo motors have not gone well. I think I have broken many!
Best I get one with metal gears next and do some more fine tuning to the slides to ensure an even smoother action.
At least I have proven my capabilities to solder brass work. (No, my next project is NOT a full brass engine kit! :o )
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