Chris Brown (Emettman)'s workbench

What are you up to on your workbench
nickbrad
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Re: Chris Brown (Emettman)'s workbench

Postby nickbrad » Fri Dec 15, 2017 11:51 am

That's one heck of a victoria sponge you've got the penguins balanced on.

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Mountain
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Re: Chris Brown (Emettman)'s workbench

Postby Mountain » Fri Dec 15, 2017 1:22 pm

Nice display. :) Do you get many kiddies wanting to push the button? :D
Don't do anything I wouldn't do!

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Emettman
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Re: Chris Brown (Emettman)'s workbench

Postby Emettman » Fri Dec 15, 2017 5:08 pm

nickbrad wrote:That's one heck of a victoria sponge you've got the penguins balanced on.


My most commonly used baseboard material these days: insulation foam.
It breaks into excellent cliffs

Chris
"It's his madness that keeps him sane."

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Emettman
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Re: Chris Brown (Emettman)'s workbench

Postby Emettman » Fri Feb 16, 2018 10:51 pm

Now I've gone and done it.

How do you ruin every knife you have?
Buy a new knife. Every other knife will instantly seem blunt.

I have just got operational (need a dab of paint and added crew figures: photos then)
Two of the familiar Triang/Hornby "Nellie" locos.
With
Rechargeable battery power,
Radio Control,
Directional head and tail lights.
And
Radio-control activated couplings at both ends.

Trouble is, there is no way I can retro-fit any of my earlier locos, short of scrapping all of their guts.

Chris.
"It's his madness that keeps him sane."

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Mountain
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Re: Chris Brown (Emettman)'s workbench

Postby Mountain » Sat Feb 17, 2018 12:00 am

Bufferstop wrote:When I have tried those motors matched to steel and brass gears, the extra friction in the gears raises the starting voltage, negating any speed reduction the gears might provide. The plastic chassis, with nylon gears and a low powered motor is actually a very well executed bit of cost engineering. The Triang designed chassis from Nellie,Polly et. al. belongs in the age of heroic design which, had the grunt from the X04 to make it move. I have a Nellie with the newer wheels and rods using the old gear with Pug cylinders and motion grafted on. It's a later model with a Johnson motor


You maybe surprised to know that when I was preparing such a Triang 0-4-0 chassis for Ruthy, when I removed the pickups I've not found such a free running chassis as I have with this Triang one. Even though its con rods were connected, when I spun the wheels they took ages before they stopped. Some metal pinpoint axled wheels dont do that! While the chassis probably had reasonably high milage so had opened up a bit, I have to say that most of the friction those old Triang chassis had came in the form of the well made but heavily sprung pickups.
Don't do anything I wouldn't do!

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Mountain
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Re: Chris Brown (Emettman)'s workbench

Postby Mountain » Sat Feb 17, 2018 12:02 am

Emettman wrote:Now I've gone and done it.

How do you ruin every knife you have?
Buy a new knife. Every other knife will instantly seem blunt.

I have just got operational (need a dab of paint and added crew figures: photos then)
Two of the familiar Triang/Hornby "Nellie" locos.
With
Rechargeable battery power,
Radio Control,
Directional head and tail lights.
And
Radio-control activated couplings at both ends.

Trouble is, there is no way I can retro-fit any of my earlier locos, short of scrapping all of their guts.

Chris.

The new locos of yours sound very promising indeed. What voltage motor are you using?
Don't do anything I wouldn't do!

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Emettman
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Re: Chris Brown (Emettman)'s workbench

Postby Emettman » Sat Feb 17, 2018 11:30 am

Mountain wrote:The new locos of yours sound very promising indeed. What voltage motor are you using?


A range of ones basically at 3V.

Having had a look at what's available now. I can see, I think, a route to add operating remote couplings to some chipped locos.
The motor or motors for that would be:
https://www.ebay.co.uk/itm/Mini-Micro-Coreless-Gearbox-Motor-Planetary-Gear-Reducer-Motor-DC-3V-6x8MM-45mA/282257688405?_trkparms=ao%3D1%26asc%3D20160502134246%26meid%3D082f2ed8f74240e1ae9ca5e8e97323ad%26pid%3D100282%26%26itm%3D282257688405&_trksid=p5713.c100282.m3503

To avoid motion limit switches or motor burn-out I'd suggest using an eccentric capable of complete rotation to get the 2-position motion.

Chris
"It's his madness that keeps him sane."

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Mountain
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Re: Chris Brown (Emettman)'s workbench

Postby Mountain » Sat Feb 17, 2018 11:10 pm

Is interesting.
Don't do anything I wouldn't do!

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Bufferstop
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Re: Chris Brown (Emettman)'s workbench

Postby Bufferstop » Sun Feb 18, 2018 1:33 pm

Looking forward to some photos Chris.
Growing old, can't avoid it. Growing up, forget it!
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Emettman
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Re: Chris Brown (Emettman)'s workbench

Postby Emettman » Sun Feb 18, 2018 4:21 pm

Bufferstop wrote:Looking forward to some photos Chris.


Can do.

Finished: not particularly remarkable-looking "Nellie" bodies, though one now has outside cylinders.(originally a Smokey Joe chassis)

DSC01053.JPG


But while 7178 is carrying couplings in their normal couple and pull position, 12 is showing its trick.

DSC01054.JPG


Front hook raised, rear loop (no hook) lowered.

Basically a vertical slow motor has a pin turning about 120 degrees to shift a flat plate with modified ends to push or release the loop and hook

DSC01056.JPG


Getting everything inside a small shunter, well I'd have got nowhere near this when i started playing with this idea for power and control.

DSC01051.JPG


Rt, new low voltage drive motor. Above it control chip
Centre, vertical,coupling plate drive motor.
Left, 2 rectangular 1.2 v batteries (charge in place through socket)

This is the "exploded" "is everything properly connected and working" moment before the wires are shortened and/or tucked away in the hope that the body will still fit over everything, as it did before adding wiring.

Chris.



.
"It's his madness that keeps him sane."

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Emettman
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Re: Chris Brown (Emettman)'s workbench

Postby Emettman » Tue Jun 19, 2018 11:53 pm

Recently arrived, some O scale horse-drawn tram kits from Russia.
Printed card, needing no cutting or glue to assemble.

The idea was to see if the (majority of the) kit might be a cheap and different route to some O-16.5 coaches
I ordered 3, along with an HO industrial building for a different project.

Ordered this way the carriages came out at £5.00 each including postage.

DSC01080.JPG


Propped up to give the height with a substitute chassis (4-wheel coach or long brake van chassis ideal)
Coach is 150mm long and 50mm wide. Includes neat glazing.
To get verandah variations a photocopy of some parts would be a possibility, but I might make "metal" railing ends by cutting down doll's house samples.
(I've re-scaled such before!)

This coach was built to learn assembly. It needs no glue but a few small drops of superglue would improve things a little and make things considerable easier.
Assembled carefully only 2 small tags are visible at either end, and these could be done away with if using glue.
It shows more under the flash than in daylight, but the roof edges could use a touch of felt-tip to colour them.

DSC01078.JPG


Shown against a Hornby saddletank to show how it would match against an O-16.5 conversion of such.

Overall this seems, to me at least, a viable (and cheap) route.
A bit more play with this sample, I think, before I makeup the two I'd actually need.

Chris.
"It's his madness that keeps him sane."

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Emettman
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Re: Chris Brown (Emettman)'s workbench

Postby Emettman » Tue Jun 19, 2018 11:58 pm

Oh, and just for fun, the eclectic trains currently running in my window:

DSC01081.JPG


Mostly, their own mother wouldn't recognise them.



DSC01082.JPG


Down to 6" radius on the sharp bits, that piece of track.

Chris
"It's his madness that keeps him sane."


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