Recent content by jirik92

Yes, it is possibly tehs it with air. But both pressures (up and down = open and close) are a little bit different. Depend of constructio more then 10%. Simply steam is steam ;-).

Similar engine - plans, photo - is here : http://www.steamer.cz/par_min.html Regards, Jiri

I have used similar princip a few years ago (see my pages http://www.steamer.cz/par_fit.html). But while years I have problem - pipes damaged while many times join was assembled/dissassembled. I returned to other princip - soldered conus on pipe- see picture. Regards, Jiri

I think 0.5mm is too much for reamer. I usually drill hole about 0.2mm smaller then reamer.

Hi Chuck, thanks. Unfurtunatelly I almost have no time for my small models now, because I am building our club 5+7 inch model railroad. You can see at http://www.smpd.cz. I would have reversing remote controled engine for this small boat. So, it's not possible. I am planing build small one...

Bad news, I'm crying :'( After a short inrun (under grinding/emery-paste) engine works very good. Runs under 1 bar (15 PSI) smoothly. But I make one thinking mistake. This engine has many cold pieces in steam flow/way - pipe, four-way valve, next pipes, engine body, cylinder, piston. So is long...

And last picture for today - it's arranged only. Next week I have make better tightness and slight run and final assembly. We'll see ;D.

So guys, another portion of pictures. Today I have bult boiler for small engine.

Try remove main part of soft solder by mechanical tool (knife, Deremel high speed mini grinder). Use smal sand blaster locally at next to remove rest of the solder. And normal sand blaster at the end to homogenize surface. Yhe surface will be clear but matt (sand blasted). It looks good too. It...

Vertical boiler drawings are here http://www.steamer.cz/par_stro.html.

To steamboatmodel : Yes, I'm doing boiler. It will be complete remote controled steam miniboat.

Don't use brass, it's hard and fragile/breakable/cracky. If you cannot buy this thin copper sheet, use more thick copper sheet instead.

It have 32 x 35 mm (without pipes) and 20 mm height. It was REALY difficult work, because I have to use +3 dioptres glasses all time to see something ::). Regards to all, Jiri

Hi guys, I finished very small live steam four-cylinder oscilating engine (weight 28 gram) - see attached pictures and video. It's made for my 25cm (10 inch) steam pinnace. Complete building process you can see at http://www.steamer.cz/mod3_pin.html http://www.youtube.com/v/jiiSLr8Om64

All bender devices are a little bit complicated. I so one idea on japenese web and use it now. Simply make grow at same diameter as pile, heat up pipe (and cool down too ;D) and incurve it.