| Gallery, Projects and General > Project Logs |
| Small simple turbine engine |
| << < (5/5) |
| ozzie46:
Your truly an inspiration Arnold, what with your tool builds and models, I keep referring back to your posts for ideas. Ron |
| sbwhart:
Its a screamer :headbang: :clap: :clap: :clap: :clap: :clap: Great build Arnold :thumbup: Stew |
| Stilldrillin:
Arnold. That's gorgeous! :clap: :clap: :thumbup: From near, or far! :D David D |
| arnoldb:
Thanks Steve. You're welcome to any ideas, and it is my pleasure if you find something useful in my posts. I'm certain there are no new ideas from me though; merely repetitions of, and maybe slight changes to, ideas I get from many members on the forums I frequent, and digging and scratching through the Internet and reading through as many books as I can get my hands on. Bogs actually mentioned this same fact in quite a couple of posts I'm aware of; there's very few new ideas around; merely re-discoveries of old ones. Cheers doubleboost :D. I learnt about things exploding at high RPM while cleaning computer power supplies with a blower before repairing about 20 years ago... The fan would spin up nicely - waaay cool - and then go kaboom. Lost a couple that way; I still had to fix the power supplies, and then my dad docked my "pay" to replace the fans with a new ones... I was still in school and we fixed computers, screens, UPSs and so on to earn an additional income for the household as money was a bit tight; good old days though. Give me a solder sucker and soldering iron, and I can still de-solder a faulty Z80 CPU and solder a new one in... Don't like this new surface mount stuff though :palm: Thank you John. I agree; there's a lot of factors that will improve the turbine. And I did have a look through your original turbine build logs - a lot of information in there; Thank You! I might experiment a bit more with turbines in future, but for now this one can go on the display case once I've made a base for it. It's surprising how many people always ask "Have you made a turbine". So now I can say "Yes, there's one;not much to see on it is there? Now just look at how interesting the motions on this Grasshopper steam engine is; this rod that's connected to the piston pushes up the beam, and that then pushes down that rod that......." On to more work on the experimental engine and a Stirling now for me. Ron, thank you. Likewise, you are an inspiration to me :thumbup:. You're doing beautiful jobs with the limited tools you have available, and your passion for your modelling shows through. I have a hunch your passion is worth infinitely more than all the fancy tools money can buy :bow: Stew, thanks mate :beer: I'd of thought its a "whiner", but screamer sounds better :D. It confuses the heck out of my parrot though; If I pick the turbine up and blow it, the parrot goes Pfft Pfft Pfft - like all my other engines and when it winds up he imitates a police siren :doh: :lol: Thanks David :D - but it really is nothing to write home about from near. If you clicky here, all the gory details will show up :bugeye: A good friend of mine on HMEM asked about the torque this engine develops, which reminded me of a point I forgot to mention earlier in the build, so here goes: ADDENDUM TO THE BUILD: Jim's question about torque reminded me of something I wanted to note when I started on the build. As stated, the build is loosely along Elmer's turbine plans, but I actually made it a mirror image of his design. For anybody that builds Elmer's turbine as designed, I feel there is a very real possibility of the nut retaining the rotor unscrewing if the bearing seizes up or there is a load running on the pulley and the engine spins up under pressure. The turning direction of the rotor in his design is the same direction as needed to unscrew the retaining nut. If that comes of at a couple of thousand rpm, it could be a tad dangerous. With the mirrored version I built, the rotor will tend to tighten the nut further - hopefully keeping things together and just shutting down the turbine if something goes wrong. No guarantee for safe operation though, but at least a little extra comfort. And for the record, the above is said with the greatest respect to Elmer and his legacy. :beer:, Arnold |
| John Hill:
Regarding this type of impulse turbine, I think it would be interesting to design a turbine where the angle of the nozzle changes with RPM as they do in a Pelton wheel turbine. For starting and low speed the nozzle is close to tangental but as rpms climb the nozzle changes angle to be more radial. I expect the result would be higher speed and/or less air. Just my thoughts and yet another project on my list! :coffee: |
| Navigation |
| Message Index |
| Previous page |