AltcarBob Show full post »
Julian
Yea, thanks Ruff...    I bought one of those, before the Peco one, but didn't notice those parts, what a bonus! I will definitely look to find them, they would be a saving on scratch building them.  I looked at it for the TT on the layout, but setting [or rather, replacing] their track sent me to look at the Peco one.  I also intend to make a road over girder bridge, so the rest of the Dapol pack will come in useful.  Salisbury, the same TT as the Peco one [Yeovil] had 2 previous TT, both in other areas of the Stn, so I may lay the Dapol TT track as a bit of abandoned previous TT.  

Thanks again for the Dapol parts information, very useful, indeed.

Regards

Julian
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Ruffnut Thorston
I have used the Airfix / Dapol parts to convert an old Hornby turntable to look a bit better.. though it hasn't changed how it works!

There is a lot of step by step on this place...MRF...link....

#22

The almost finished job...

This is as far as I have got so far...

DCP14975.jpg  DCP14973.jpg 
Best wishes,

Ruff...
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Julian
Nice pictures, Ruff...  

I like the use of the steam/vacuum pipe extension pipe and the simple location of the pump, avoiding the TT wheel.  So simple, don't fight the problem, just move the solution a few mm.  😋

The Yeovil pump has an overhead cover, in wriggly tin and scaffold, with their footwalk extension and I was just going for a bit of planking, with handrails.  Moving it to avoid making TT wheel cover extensions, is the cream on the cake and a big "solution smile".  

Regards

Julian
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Bunkerbarge
A lot of the UK turntables used a vacuum engine, driven by the vacuum ejector on the locomotive, via a long pipe that had a base at the end that connected to the vacuum brake pipe on the loco.

Obviously, non vacuum brake locos would not be able to provide any vacuum.

Usually, there was a pedestal with handles that could be hand powered to turn the table. This is also a backup for the vacuum motor.

The Airfix, now made by Dapol, turntable kit has these parts...


That is why you will sometimes see a turntable with a large cylindrical tank on the side, which is a vacuum  tank, to drive the vacuum engine, as per here:

http://www.metalsmith.co.uk/4mm_scale_00_EM_P4.htm
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Ruffnut Thorston
Thanks Julian.

I just went for the simplest option... hopefully there isn't a glaring reason that it wouldn't be done like that!

Yes, I have seen these vacuum tanks.

Of course, a loco, maybe the shed pilot, could top up the vacuum tank ( if that is the right word? 🤷) which could then be used to turn non vacuum fitted locos.

A neat solution.
Best wishes,

Ruff...
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Julian
I have to admit to a failure, at this point.  I like the idea of representing a couple of Gents pushing at the handles, which were used by so many TTs.  The issue is that the hands may be glued to the handle, but the hips need to be articulated, without complete rotation [a "tad" unrealistic].  Still working on the that one...

J
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AltcarBob
Just to update on my original post.  Locomotech motorised turntable is spinning away merrily controlled by a LaisDCC1 amp chip. Probably the easiest bit of construction I have ever done it took about 10 minutes to have the TT spinning via 2 jump leads and a 9volt battery. The motor and gearbox is a hefty lump as I found out when I dropped it on my right index finger and one of the wiring connectors made a nice little hole.
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Julian
AltcarBob wrote:
Just to update on my original post.  Locomotech motorised turntable is spinning away merrily controlled by a LaisDCC1 amp chip. Probably the easiest bit of construction I have ever done it took about 10 minutes to have the TT spinning via 2 jump leads and a 9volt battery. The motor and gearbox is a hefty lump as I found out when I dropped it on my right index finger and one of the wiring connectors made a nice little hole.


Likewise, I would heartily recommend the Lcomotech kit as a delightfully simple and quiet solution to TT rotation.  The addition of DCC control makes it even more refined and smooth.

Regards

J
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