Project --- Anti-Gravity Train

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WVLR

Project --- Anti-Gravity Train

Post by WVLR » Mon Jan 06, 2014 4:24 pm

Having seen, but sadly not ridden, the gravity train on the Ffestiniog Railway, I was inspired to
make a model of it. The problem with modeling this type of train in 16mm is that on the average garden layout
it will go nowhere, fast, it might trundle slowly down an incline but when it gets to a level bit or,
even worse an uphill, then that's about it as far as running is concerned.

So some sort of power unit was needed, hence the anti-gravity bit.

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With the CAD drawn up for the chassis, it was decided that 4WD would be essential, so a suitable motor
was sourced from the local model shop. The motor is 12 volt and the type used in slot cars with a shaft at each end
this made it perfect for 2 axle drive via 30:1 ratio Cambrian gears.

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The chassis was made from 1/8" acrylic, actually an old car number plate, and cut out on a CNC router.

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The wheels, axles and axle boxed are IP engineering.

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Then for a variety of reasons the whole project came to a halt, but 20 months later I have managed to get around to
finishing it.

As I'm a great believer in "If there's a difficult way to do it then that's the way it should be done" I decided that the
power unit should be radio controlled, with 2 channels, for speed and forward/reverse, after all if it's anti-gravity then
it may as well go backwards as well.

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Things were a bit of a squeeze especially as I decided to go for a 6 volt NIMH battery with an on-board charging socket.

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But it doesn't look much like a slate wagon yet, so the next thing was to 3D print a cover for the electronics which could
be made to look like a dummy slate load.

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To finish the cover off, I used a soldering iron to melt the plastic to give the effect of slates and made a slate wagon
wooden body on the laser cutter.

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Finally the 2 pieces were painted and assembled to form the body of the power unit.

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So I now have the makings of my train, with 3 scratch built and 4 Binnie slate wagons, the next part of the project is to make
the dandy wagon to carry the horse at the end of the train ..... hopefully it won't take me another 20 months to do that !
Last edited by WVLR on Tue Jan 07, 2014 10:14 am, edited 2 times in total.

steamie1

Post by steamie1 » Mon Jan 06, 2014 4:45 pm

Wow!

Tom

Post by Tom » Mon Jan 06, 2014 4:50 pm

Excellent, lovely work! :lol:

laalratty

Post by laalratty » Mon Jan 06, 2014 8:46 pm

Excellent idea, looks like you made a good job of the power waggon

Peter L

Post by Peter L » Mon Jan 06, 2014 9:24 pm

Brilliant! 8)

Woodfields Light Railway

Post by Woodfields Light Railway » Tue Jan 07, 2014 7:31 am

That looks so well done. I wish I had the skills to say, "hey, I'm going to build this," but instead I can't and will just set fire to myself or something of the sort when attempting!

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williamfj
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Post by williamfj » Tue Jan 07, 2014 7:51 am

Smashing stuff! :thumbleft:

WVLR

Post by WVLR » Tue Jan 07, 2014 10:15 am

I forgot to say in the description that The chassis was made from
1/8" acrylic, actually an old car number plate, and cut out on a CNC router.

WVLR

Post by WVLR » Mon Jan 13, 2014 12:01 am

I took the AGT for it's first run this afternoon on the Portland Light Railway near to Market Drayton in Shropshire and was very pleased with the up hill performance of the power unit.

http://www.youtube.com/watch?v=YQ7hVPMcpiw

http://www.youtube.com/watch?v=Cm9eis9erZY

MDLR

Post by MDLR » Mon Jan 13, 2014 3:04 pm

It shouldn't HAVE any uphill performance!

WVLR

Post by WVLR » Mon Jan 13, 2014 3:17 pm

MDLR:95473 wrote:It shouldn't HAVE any uphill performance!
Brian, it's anti - gravity, I suppose it shouldn't really have reverse either. :D

Tom

Post by Tom » Mon Jan 13, 2014 3:58 pm

Excellent work as ever Mike! it looks great, now you just need a couple of riders (or should I say thrill seekers) :lol:

WVLR

Post by WVLR » Mon Jan 13, 2014 4:07 pm

Tom:95476 wrote:now you just need a couple of riders
Working on that at the moment, a look out plus a couple of brakemen, I've also ordered a 1:25 scale horse to go in the dandy cart.

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