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Helmut
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| Joined: | Sun Feb 17th, 2013 |
| Location: | Friedberg, Germany |
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The tracks are made from 15mm sq. rods. I drilled 8,5mm holes down from the top and had them countersunk to accommodate flathead screws. A standard plug for a 6mm screw is 8mm in diameter, so I could use the pre-drilled holes as a guide for the hammer-drill. The rails were fixed with a jig so that the holes could be brought down precisely. Then I pushed the plugs through the rails into the concrete and fastened the screws. Very fast method and the trackwork is rather sturdy. In bends you have to drill every 12" to 16", at least in the outer rail in order to avoid widening of the gauge resulting from the lateral forces a loco is exerting when going round.
Last edited on Tue Aug 4th, 2015 05:45 pm by Helmut
____________________
Regards, H.
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| Posted: Tue Aug 11th, 2015 11:24 am |
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24th Post |
Helmut
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Well,
after all that tracklaying I think it's time to reveal the reason for all that hurrying:
The one in the background carrying the flue on the smokestack. My good friend's son approached me in February and told me he'd like to choose designing and buildinga steam locomotive for his bachelor in mech. engineering's thesis. Whether I would like one? Oh, the price, I said but he made an offer I couldn't refuse ( still some dinero, but...)
Now, in August, it arrived and took the tracks under its own steam going up a 6.5% grade with the builder at the throttle:
In the upper reaches of the garden we had put down a rather hodge-podge temporary track with grades up to 10%, but it made it all the way up:
My friend, a Bundesbahn loco driving instructor, watches closely of course...
All yours with a head full of steam -
____________________
Regards, H.
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| Posted: Tue Aug 11th, 2015 06:18 pm |
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25th Post |
Alwin
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| Joined: | Sat Jun 29th, 2013 |
| Location: | Netherlands |
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Hey Helmut,
That steam loco is very cool! And I see you don't have to wheater it anymore. 
Have fun with it.
Alwin
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| Posted: Tue Aug 11th, 2015 06:31 pm |
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26th Post |
Herb Kephart
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Great addition Helmut. I wrote addiction first by mistake--but it might just turn into that!
Herb
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Fix it again, Mr Gates--it still works!"
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| Posted: Wed Aug 12th, 2015 08:32 am |
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27th Post |
Helmut
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@Herb
addiction - it always was that for me, being an Festiniog Rwy ex-fireman and auxiliary driver ( volunteer )
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| Posted: Sun Aug 16th, 2015 08:49 pm |
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28th Post |
Helmut
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If somebody likes to watch the trial runs on a friend's 10.25" layout ( Yes, the loco's gauge can be adjusted ) here it is.
Last edited on Sun Aug 16th, 2015 08:52 pm by Helmut
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Regards, H.
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| Posted: Mon Aug 17th, 2015 01:04 am |
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29th Post |
Herb Kephart
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Nice! You can save steam by not running with the cylinder cocks open so long--only have to get the cylinders up to a temperature where the steam won't condense in them you know.
Next it would be nice to see one of those old Deutz 4 wheelers, with a horizontal I cylinder diesel--and big flywheels visible through open hood doors.
Herb
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Fix it again, Mr Gates--it still works!"
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| Posted: Mon Aug 17th, 2015 06:29 am |
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30th Post |
Helmut
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@Herb
These were trial runs, e. g. note the different steam dome. They changed some things 'on the fly' there as the workshop is well-equipped ( makes me jealous at times ) The drain cocks now release only a rather small amount of steam, but is has been found that the counter-pressure which inevitably builds up when the valve cuts off and the piston compresses the remaining steam just before the end of its travel, is much less. So overall operation is smoother than with completely closed cocks. When starting from a pause, you have to open the cocks anyway.
____________________
Regards, H.
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