Gallery, Projects and General > The Design Shop
RC Model Steam Project
Bernd:
John,
--- Quote ---So basically if you need to easily swap over fwd/rev, your engine will have to be either an oscillator or a piston valve.
--- End quote ---
Just as I thought. So you confirmed that for me because I couldn't see no way of doing that.
--- Quote ---Metal chain and sprocket final drives usually cause havoc with radio gear, producing radio spikes that are very hard to filter out. You can buy small, very strong nylon chains and sprockets that overcome the problem, but they are rather expensive.
--- End quote ---
Didn't know that. Very interesting. I knew I was talking to the right guy about this design.
--- Quote ---I personally think that a 3/4" square engine will grossly overpower this small model, and so waste steam, a 1/2" bore X 3/4" stroke twin would be more than enough. But of course the choice has to be yours.
--- End quote ---
Ok, that's why I gave the specs on the engine size he uses and the size of approximatley what the chassi dimensions will be. I figured you'd point me in the right direction here.
--- Quote ---BTW, using a tank for gas as you suggest is highly dangerous. .............. So I would suggest a little more thought on that one.
--- End quote ---
That's one of the reasons I decided against using the frame with the copper tubing. To close to the open flame. This will need a bit more research. This can come near the end of the project.
Ok, so I guess here is what I'm looking at for an engine. A piston valve twin with a 1/2" bore by 3/4" stroke running a 4 to 1 gear reduction to the wheel. I think the wheel size I am going to use is going to be about 5.5" dia. and a single front wheel of 2" dia.
I guess I've got enough info here to get me into trouble. :lol:
Now I'll need to find some time to start "squeezing" this project in amongst the famous Honey Do List.
But first will come the frame for this project and the wheels. In the mean time I can see if I can draw up the engine part of it.
Many thanks for the suggestions John. BTW the boiler will be DOM tubing. I have a 4 foot long piece I'm going to use. More on this later. Right now I need to get busy and start on the frame. Looks like rain in the forcast for 3 days after Tuesday. So may have some shop time. I'll post when the first pieces are going to be made.
Regards,
Bernd
bogstandard:
Bernd,
I think I have the plans for the perfect engine for you, and they are a freebie download. As long as you don't mind it being in French and metric.
But, as usual, I can't find the damned site I got them from, so I have put them on my own server and you can download from here.
http://rapidshare.com/files/245020764/french_piston_valve_horizontal_twin.pdf
Bogs
DavesWimshurst:
Bogs,
Is this the french engine site?
http://jpduval.free.fr/Plans_moteurs_vapeur_p1.htm
Dave
bogstandard:
Yes Dave, but this plan was stuck away in the background and I was very lucky to find it.
I spent half an hour searching, but couldn't refind it. Maybe it has been deleted.
Good free plans on there though, even though you have to do a bit of translation first. There is a nice download series for a garden rail loco and rolling stock.
I forgot to add, as usual, if you download from my server, if you don't have a Rapidshare account, you must choose as a free user and wait for a minute to access the download. But very safe, no viruses or trojans, just what I want you to have.
Bogs
kvom:
I like the look of the Duval plan for the 4 cylinder v-osciallator. Might be my next project.
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