Here the turbines small of the world.

More!

here the during test , end final fly the trust 10N

Trying to upload photos of my contribution..........Ahh there we go. What a pain, built back in 2001. 2.5 inch dia engine, 1.5 inch turbine and compressor, not the smallest in the world, but small enough to drive you nuts trying to get it to run.
Vaporizer ring shows diameter of combustion chamber.

Andy

HAHAHA,I have the engine 2.3cm. is very small to see in photos end you not have the revers trust

st hahah NIKI.

Just BRILLIANT. Wow.
I have had some micro engines, like the Valentin diesels, this is a whole new thing...

this turbine is made by hand handicraft, the compressor, the turbine works to hand.è , the tests has been hard...

also I have made motor small to vapor, to can see photo 10 micro motor

regards Niki

339 tricolore, amazing work, absolutely amazing. I can only imagine the hours and days of intense work it took to build these engines, although in the end a tremendous accomplishment.
Reverse thrust too! That is some of the best model engineering work I have ever seen. Looks like a real JT8 thrust reverser bucket.

So, does the longer engine have an axial compressor?
I would love to see closer pictures of your engines, especially the compressor and turbine, they look to be of unique design.
Keep up the good work, and keep the pictures coming...........I will post more soon.

Andy

More of my little turbine. I think Tricolore wins, although I think Ewald(Pegasus) is working on something that is pretty small last I heard. Compressor shown in the 4th photo was a CNC programming boo boo, so it never ran, just used it for fitting purposes.

Andy

Not quite a micro micro turbine, but here is my latest homebuilt., since we are on the subject..... 73mm compressor. Roughly based on KJ, Wren style construction. Photo on test stand shows first test run, with prototype ECU, so far so good, although did have some turbine to shroud rubbing on cooldown. I have no idea what the thrust will be on this one, should be quite low, with hopefully low fuel consumption with a rather small throughput, hi pressure ratio compressor. Engine 4.75 inches in diameter, came out a little heavy. Built on all manual mill and lathe, no CNC whatsoever. Runs on $4.00 bearings, although I have a great source for gr 5 ceramic balls(they are modified for full 11 ball compliment). Hand ground Inco 718 turbine wheel(dont' ever want to do that again), believe it or not, even the diffuser was cut on a manual mill, with a lot of thinking and fixturing, did I mention thinking????
Andy

Oh yeah, runs on Diesel too!

{EDIT} I feel like I am postwhoring, sorry, I just get so excited when I see others that are homebuilding, as there are not many of us. In no way do I intent to one up anyone, I just thought I would share my latest work in a relevant post.

AP

Here is a good one! http://www.lambert-modellturbinen.de/html/gallery.html

Beleive me, people ARE interested, Andy...keep posting.

Okay, here's my contribution. 60mm turbine, loosely based on kj66.
Martin


http://www.rcgroups.com/forums/showthread.php?t=391515

Wow that Kolibri is nice, new to me, never saw it.

McJustis, nice work, I have seen some of your photos before. The larger diffuser is quite interesting, how are the axial flow straighteners machined?

Keep em coming! I know there is a guy out there... Dave I think??? who is working on a 2 inch diameter axial compressor.

Andy

hi peoples here to see the compressor 2.00 cm end the turbine small.....I am completing the proggetto, F117 I am the eurofhather in micro I upset some, lambert coast 2400$ the my coast 100$ manufacture..........

$100? Will you build me five of them?

Seriously, though, I doubt lambert would be even slightly upset. They have a production engine, yours are just built for the challenge of it.
I think the Lambert is very reasonably priced for what it is, and from everything I have heard, they run great, and are a real practical, flyable powerplant.
Yours are handmade pieces of very interesting machinery, on a totally different level...but remember, to do what lambert does, make a design that is consistent and repeatable and saleable, that is a different challenge from yours, I respect what they have done, too.

These engines make my mouth water.
How about some video of these little jewels running.

Fantasic work guys, more pictures please.

Very cool project 339Tricolore.. congrats. And are you using a ECU (centralina) for this turbine?

Enrique.

in this moment use orbit jetronic , but the my friend electronic engineer develops one new modernized version, the my turbine enters within the kolibri lambert.........


NIKI.

I can put my hand up for one of these, a friend has one & it's magic. Most certainly not a novelty, this thing starts easily, runs great & is really racking up the hours in a Multiplex Twinjet foam park flyer. - John.

$100!? I will give you $500ea and take 10 engines!

By the way, I would love to see some video!

Andy,
The axial flow straighteners are machined on a highly complex setup, a rotary table setup on its side in mill. Very highly complex...Actually, I turned the front diffuser to fit bearing tube, and fron end, then did the top mill work on it. After that, I setup a fixture in a rotary table to bolt the diffuser to and used a hole saw. It took a little experimenting to get it in the correct spot, but once there, just cut to depth rotate and voila...thirty some rotations later you have thirty some slots cut in the side of the diffuser. Then take aluminum tubing the same diameter as the hole saw, cut it into approximately fourths and stick in the slot. Weld them in place if you can, also a nice press fit will help you here. Then comes the fun part. CAREFULLY machine the outer diameter of the vanes and the face to fit the front end and the canister. TADA. It actually sounds more complex than it really is.

FHHOBBIES,
Here is a video of mine just coming up to idle. I walk around with the camera to show the back end and that there are no flaming balls of fire belching out the back end.

Martin



http://media.putfile.com/turbin