Engines > Your Own Design
E-gad, he’s making another one of those crazy pop-up things
Craig DeShong:
Yep, I am. My friend Bill Hazzard told me I haven’t built a 2nd generation Otto & Langen model yet; so of course, that was all the impetus I needed to commence the design and build. He suggested I model this engine.
and after reviewing my photos of 2nd generation engine versions (they were built by the home German firm: Gasmotoren-Fabrik Deutz, but also under patent license by- Crossley Brothers: a Brittish firm, Schenck & Co.: a Belgium firm, Langen & Wolf: an Austrian firm, and Sarazin/Panhard: a French firm) the above engine (a 2 HP engine in Oslo, Norway) seemed a reasonable choice.
I don’t have any detailed elevation drawings or measurements of this engine so I won’t be able to claim I’m building an exact scale model; still I have enough detail photos so the model should pass approval with all but the most rigorous of scrutiny.
The CAD design has been progressing steadily since early November (it’s taking a while to design this one). With the cold weather outside I’m in no hurry to finish the design. I have already procured those items that I’ll need that might be hard to locate at the size I need them; specifically the honed cylinder and the flywheels.
Just so you can see where I’m going with this design I’ll include a few elevation pictures from my Alibre software. (If I were willing to spring for the Expert version of the software I could give you some keyshots that are supposed to look very ‘real’; but for a modeler, I can’t justify the additional charge).
I still have the governor and slide valve to design/draw but other than that, the design, for the most part, is complete. I expect construction to start around the first of the year but it may be slow going if the cold weather really sets in.
fumopuc:
Hi Craig, good idea. I will following along.
Jo:
8)
Maybe we all need to keep our eye open for any more in the collection you haven't made a model of yet :naughty:
Jo
Alyn Foundry:
How about full scale Craig?
Picture of a full scale replica of an Otto, Langen and Roosen 1871 engine.
Built by a couple of good friends of mine several years ago.
Cheers Graham.
Craig DeShong:
Achim: thanks for the encouragement.
Jo: I'll take all the help I can get!
Graham: Full size? !! A bit beyond my machine shop capability, and WAY beyond my budget. Also, who would want deal with all that weight? I fell down the back porch stairs last Summer, carrying my 1st gen. engine (well, more like I thought I was on the ground when I had one more step to go). As I teetered, way out of balance, I remember distinctly thinking "This has the potential to end poorly"... with a 60 lb. cast iron model in my arms.
Fortunately, I ended up just sitting down on the steps with the model in my lap. Other than an abrasion on my arm and a lump on my noggin (where the flywheel cracked me in the head) there was no lasting damage to either me or the model.
So.... That's all the weight I'm willing to deal with. :ThumbsUp:
Think I'll stick to the models. (Wouldn't a full size be a gas though?)
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