5"gauge Loco pulls 7 tons

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BobbyT
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Re: 5"gauge Loco pulls 7 tons

Post by BobbyT » Sat Apr 21, 2012 7:06 pm

OT: "Das Boot" was actually a name of a movie "the boat" which was about a submarine.

This is a very impressive video.

WJH
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Re: 5"gauge Loco pulls 7 tons

Post by WJH » Sat Apr 21, 2012 9:57 pm

Hardest part is starting and it looks like in the video he may of assisted in that with his feet. The locomotive looks very nice

Rwilliams
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Re: 5"gauge Loco pulls 7 tons

Post by Rwilliams » Sat Apr 21, 2012 10:10 pm

It would be interesting to know if the full size 4 wheeled car frame was equipped with friction bearings or roller bearings. With friction bearings starting it would be a problem. Also, what was the condition of the wheel contour?

I have seen guys actually push a roller bearing car with new wheels from a dead stop to moving and that was a 50 foot insulated boxcar with 8 wheels. One day we left a single empty on a clear track in the yard that was set up high on both ends for switching. Later in the day, after we had left, the wind became quite breezy and actually blew the car from a stop all the way to the end of the yard track and into a switch lined against the wind powered movement. We got called on it the next day but everyone remembered the car was in the middle of the track when we departed. Result was they could not take the weatherman to investigation.

If the full size car did have roller bearings, than it would be easy to see why it was started by the small steamer and the need for the skate to prevent injury.

Years ago there were promotional photos of a few women starting a large steamer equipped with roller bearings from a dead stop as they pulled on ropes connected to the front of the locomotive.

I was impressed with the realistic off-beat of the three cylinder steamer. Be nice to hear it with a train at speed to give a better idea of what the SP 5000 class steamers sounded like in service.

Asteamhead
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Re: 5"gauge Loco pulls 7 tons

Post by Asteamhead » Tue Jul 31, 2012 4:13 pm

Bill Shields wrote:ACTUALLY, it is die Lokomotive which is a FEMININE auf Deustch. (although feminine has little to do with English gender in this case).

Guess it explains why we live steamers have so much trouble with Loks from time to time.

Chris:

It is quite an interesting video and a beautiful model.

I would guess that the track is a slight DOWN GRADE.

See the fellow on the right hand side who keeps moving the orange wheel-chock along?

Someone doesn't want that 7 ton car to get rolling down hill and smack a beautiful model / maker in the tender (or head).

For those of you who have never been involved with moving heavy loads (relative to the weight of the motive power):

Note how the cable is rigged - LOW DOWN so that a component of the towing vector does not end up as a LIFT on the tender. it is difficult to tell from the video, but it might actually start out with the cable BELOW the track level (at the full size car). This would give a DOWN FORCE component, which would help as traction, assuming the actual cable attach point is on the lok and not the tender.

Question:

Chris:

You say the ENTIRE LOCO is Stainless Steel (rostfreier stahl?)...even the BOILER? (I had to ask).

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Steamchris
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Re: 5"gauge Loco pulls 7 tons

Post by Steamchris » Wed Aug 01, 2012 12:46 am

Hey Wulf-Dieter,

I think you have forgot something to write, you just qoute a text?
The light at the end of the tunnel could be a train ;)

Health and Safety Notice

due to the current economic circumstances , the light at the end of the tunnel
has been switched off !

Asteamhead
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Re: 5"gauge Loco pulls 7 tons

Post by Asteamhead » Wed Aug 01, 2012 3:52 am

Hello folks, you wonder if that rail was a bit downgrade to aleviate the work. But look, the car pulled back the loco immediately, when steam was shut. The brake shoe was used for safety purpose only (I didn't want to get under that car!). An estimated grade of 0.2 % upwards in combination with a friction of about 4 pouds per ton (in motion) demanded a total tractive force at the drawbar of almost 65 pounds for 7 metric tons. Including the resistance of loco plus driver upgrade this called for a good 65 pounds or 30 kg at the rim contiously.
Think of dry rails, 3 cylinders in combination with roller bearings all around my 44 1167 (the car had friction bearings) and a precise walcheart gear, working at 70 % cutoff at 9 bars in the steam chest. No cheating or trick!
This all happened some 20 years ago at the museum Neuenmarkt-Wirsberg (Germany). Some years later we did it again with a 12 ton car at level track.
Asteamhead

Pontiacguy1
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Re: 5"gauge Loco pulls 7 tons

Post by Pontiacguy1 » Wed Aug 01, 2012 11:38 am

the picture you are referring to with the three women in high-heels pulling the steam locomotive was the Timken Four Aces, #1111, a 4-8-4. It was a demonstrator unit that the Timken company built and loaned out to various railroads to demonstrate the superiority of using tapered roller bearings on all axles, including the main drive axles. The locomotive was built in 1930, and was ultra-modern in every way. Because it was equipped with tapered roller bearings throughout, it was very free rolling. Some of the crews reported that if you were not used to it's rolling characteristics, you would overshoot your stop and have to back up! The locomotive was a rousing success. The NP bought it from the Timken company and renumbered is 2626.
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Asteamhead
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Re: 5"gauge Loco pulls 7 tons

Post by Asteamhead » Sat Aug 04, 2012 2:47 pm

Please let me show two photos of the engine from more standard view. Scale is 5 " but 1 : 10 which makes a different in weight on drivers (350 pounds) and overall size, related to a 1" scale.
Made of stainless steel including the boiler (316Ti) which was built in 1977. First engine here fired wit fuel - as was the prototype. The latter ran as late as 1977 and fought the (hydraulic) diesels which were common here in Germany! Today it's all electric of course.
Asteamhead
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joneg
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Re: 5"gauge Loco pulls 7 tons

Post by joneg » Sat Aug 04, 2012 4:28 pm

beautiful engine, does anybody sell plans or castings for these german steam locomotives?

Andrew Pugh
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Re: 5"gauge Loco pulls 7 tons

Post by Andrew Pugh » Sat Aug 04, 2012 6:27 pm

Asteamhead wrote:<snip> working at 70 % cutoff at 9 bars in the steam chest. No cheating or trick!<snip>
Asteamhead
9bar = 130.5psi in case anyone was wondering. That implies the boiler pressure is at least 130.5, and could be slightly higher. Probably not much loss at such low flow rates.

Asteamhead
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Re: 5"gauge Loco pulls 7 tons

Post by Asteamhead » Sun Aug 05, 2012 3:24 pm

Please see a photo of the 44 389 (coal) taken in Altenbeken where the class 44 three cylinders was working up the mountains for about 35 years till 1976. At that spot I was inspired to built this model when they struggled upgrade at about 15 mph at full throttle for more than one hour. Think of the sound which UP 9000 once produced - a bit smaller, of course. There are some fine stereo sounds which I recorded during 1968 to 1973. That year electrification got mostly all, when 6 axle locos were available in numbers.
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Steamchris
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Re: 5"gauge Loco pulls 7 tons

Post by Steamchris » Mon Aug 06, 2012 12:51 am

Hi Asteamhead,

What a beauty she is !!!

Regards Chris
The light at the end of the tunnel could be a train ;)

Health and Safety Notice

due to the current economic circumstances , the light at the end of the tunnel
has been switched off !

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