Wanted: Prototype Info, LGB Stainz

jgallaway81

jgallaway81

Registered
Okay, all you diehard LGB aficionados... I need your help.
I've looked at steamlocomotive.info and a couple other locations on the net for the prototype info on the Stainz. Other than builder, number, date, location & gauge I can't find anything on the REAL engine.

I am looking for: Boiler pressure, driver diameter, piston diameter & stroke. Also desired, engine weight and if possible tractive effort, though I can do the math on that if I get the other info.

Thanks for your help!

-J.D.
 
J.D.,
the LGB Stainz as far as I know is not a 'real' locomotive. It is a mismatch of locomotives. I know that people will say, yes it definately exists but look , really look at LGB's production. What they say it is is actually another locomotive that does bear some resemblance to the one manufactured by LGB. I believe the LGB model is a Krauss but not the St.LB 'Stainz' that LGB pretends it is.
 
Tim, according to what I found, the model is of the #3 (k3) of the four engine batch that was purchased together.

Looking at the pictures, I honestly think that they actually combined different pieces of the two units to get the model. There are bits of each on the model. That being said, the Stainz was modified in the 1960's or there abouts for excursion service. With that bit of info, its possible that LGB thought the differences between the two resulted from that rebuild.

I'm not interested in the semantics of the discrepancies. All I'm interested at this point is teh prototype engine(s).

In fact, if anyone can answer the same questions for both Stainz #2 and the Gobonitz #3, I would be exceptionally appreciative.

If you check out the pictures in this article: http://theworldoflgb.blogspot.com/2010/10/lgb-logo-display-white-profile-of.html < Link To http://theworldoflgb.blog...-white-profile-of.html you can compare #2 and #3. One detail that jumps out to me is the throttle. On my model of the stainz, it had a steampipe box on the leading side of the steam dome, but also featured an external throttle lever on the outside of the steam dome which ran back to the cab. As far as I can see, this is a combination of details of the 2 & 3.
 
This wiki article appears to have more dimensions for this design. (If you need help with any difficult German terms please ask...)

http://de.wikipedia.org/wiki/SKGLB_1?2 GH
 
The page is not loading for me. I'm getting what amounts to a 404 error


Edit: Nevermind... google is your friend! Thanks for the info. I already recieved contact back from a rep of the 760 Club and he is trying to contact other members to see if he can locate teh bore & stroke of the engine for me. I did recieve other info though,

again, thanks!
 
I found an online calculator which allows me to change different variables to develop the tractive effort value: http://www.smex.net.au/reference/TractiveEffort02.php < Link To http://www.smex.net.au/re...e/TractiveEffort02.php

Punched in values:
[*]Pressure: 176psi* This is a calculated value from 12atm/12.159bars[*]Driver diameter: 760mm - equals 29.92" (.76m is what was entered)[*]Boiler efficiency ratio: .85[*]Speed: 15mph (guessed top speed for such a small engine)[*]Cylinders: two With these five pieces of information, I just started punching in values for the cylinder sizes. Notice, the calculations also produce horsepower and (this is the key) the power in kilowatts.

I just started adjusting the values of the cylinders till I got something which equaled the power output of the engine, which is listed as 44kw.

I got close with cylinders of (bore) 5" by (stroke) 11.75" which got me a 43.8kw value. Looking at the different values, I decided to tinker with the values on a fine scale. The 5" equals 127mm exactly. Because of this I left this value alone. Its probably wrong though. The 11.75" got me 298.4mm stroke. Figuring the engine was probably just built with even millimeter measurements, I pushed the stroke to 300mm, generating an 11.81" but the power remained 44kw.

I don't know what an 1880's steam engine builder would have used for measurements, nor how exact they would have been.

For now I'm working on 127mm by 300mm. If I was going to go with english measurements, I thing 5"x11.75" would also be a good option, even though there is a slight bit of a difference. The bore is the exact same, but the stroke is only off by a difference of 0.0016m

thoughts?
 
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