3 Zylinder Radial Engine

[stefang]

Hi folks,

as i don't have enough projects to work on, i started another one (hey, ho, lets go)...

A 3 Zylinder Radial Engine built after a plan published as a book here in Germany.

Here is a link to the finished engine of that guy, who designed the engine:
http://home.online.no/~wtrotsch/de_engine/wt2123_3de.html

And here is my humble start so far:

The housings for the carburators (there will be three of them):

Pictures of making them:
http://gtwr.de/weblog/wp-content/uploads/2009/01/gehause1.jpg
http://gtwr.de/weblog/wp-content/uploads/2009/01/gehause2.jpg

The rotary valves for the carburators:

Milling it:
http://gtwr.de/weblog/wp-content/uploads/2009/01/kuecken1.jpg

Here the nearly finished carburators:

The six rocker arms and their mounting:

The rocker arms are milled from silversteel (115CrV3) and heatblued (went a little dark...)

rocker arms and mountings put together:

Milling the rocker arms:
http://gtwr.de/weblog/wp-content/uploads/2009/01/kipphebel1.jpg

Small parts until now, not much to see...

Greetings
Stefan

 

[gilessim]

That looks really cool so far!, tiny bits!

Giles

 

[jimmybondi]

Hi Stefan,

very nice work

awaiting for the first strokes

Frank

 

[steamer]

Yes very nice work indeed!

Who is the provider of the plans? Do you have a picture of the finished engine?

Dave

 

[esteam]

Very nice work Stefan.

Erdem

 

[Metal Mickey]

looks like high quality work, well done so far. The thing I like about the engines's designer is he is making use of the engine. It seems to fly well and sounds good so I look forward to seeing your build progress.

 

[stefang]

Thank you, guys

At the moment, there is a little pause, because I'm adapting a vertical milling head to my mill...

http://gtwr.de/wabeco1.jpg
http://gtwr.de/wabeco2.jpg
http://gtwr.de/wabeco4.jpg

but, i will continue building the engine soon

Dave, the book with the plans can be bought via amazon germany:
http://www.amazon.de/dp/3881801324/?tag=skimlinks_replacement-20

The book is german, and the plans metric

There is everything described, even how to build a simple cam grinder.

But, if my engine will ever fire up, it will never do it's job in a modelplane...it needs just to run a few times, be loud and look cool in the cabinet

Stefan

 

[steamer]

Thanks for the link Stefan!

Nice looking engine! I am looking forward to this build!

Dave

 

[stefang]

Slow progress...yesterday was a bit frustrating, made 9 (nine!?) parts for the trash bin...should have stopped after the first one, but i continued producing scrap...

Maybe today is a better day :

Stefan

 

[Maryak]

Stefang,

Welcome to the club : Sometimes it's hard to know when to call it a day.

I am sure today will be better - Hang in there

Best Regards
Bob

 

[steamer]

Hi Stefan,

I can relate......some days it's better to just shut off the lights and go to bed.....I can't give any advice on when to do that though?....... :

Dave

 

[steamer]

Not to stray far, but that is a nice looking vertical head on the mill.....is that a Deckal?

Dave

 

[Metal Mickey]

Slow progress...yesterday was a bit frustrating, made 9 (nine!?) parts for the trash bin...should have stopped after the first one, but i continued producing scrap...

Maybe today is a better day :

Stefan

After all my years as a experienced, superb and may I say, modest, model engineer(well 20 months really ;D) I must be fairly unique. You see I don't have a scrap bin. No I have a resize bin only. Its just that the bits of metal have yet to find there real purpose in life!

Your work is a stimulus to many I suspect, and does make you want to do better, or at least it does me.

I am interested in your Mill adaption. Have you, or thought of doing a thread on this work? MM

 

[stefang]

Thank you, good to hear, that I am not the only one, who screws sometimes everything up, that I touch....

You see I don't have a scrap bin. No I have a resize bin only.

Yeah, i have also a resize bin, but in fact, there are cursed pieces of metal, that don't want to be resized, and these where cursed. Definitely.

...

just joking

No, Dave, sadly not a Deckel, they cost an incredible amount of money. This is a milling head of a small benchtop milling machine from a german manufacturer, called Wabeco.
Their machines look like this:
http://www.mobasi.com/bilder/fraesmaschinen/wabeco/wabeco.jpg

But i will do a seperate thread for the milling head.

Stefan

 

[steamer]

Thanks Stefan.

I have a like for really cool mills....I like some of the european ones especially...

 

[pioneer]

Hi Stefan,
Nice work on the carbs and rockers, I an making the same engine, started it about 5 years ago, then we moved house and I did not have a workshop for a time. Back on it now, only the carbs, inlet pipes and exhaust pipes to make. I have a couple of photos of the engine but have not sorted out how to post them. I look forward to following your build very much, hope all goes well with it.
Regards, Bryan.

 

[stefang]

Ahoi,

Nice looking engine, Bryan, you should really make a thread for it

Today, i started on the cylinderheads:

next i need to mill the cooling fins and the guide for the mountings of the rocker arms.

but first i go sleeping

Stefan

 

[Metal Mickey]

High quality work Stefan, well done. :bow: :bow:

 

[stefang]

Continuing with the cylinder heads...milling cooling fins, now the cylinder heads start to look like engine parts:

Milling the cooling fins on the circumference:
http://gtwr.de/weblog/wp-content/uploads/2009/02/zylinderkopf3.jpg

Milling the cooling fins on top of the zylinder heads:
http://gtwr.de/weblog/wp-content/uploads/2009/02/zylinderkopf4.jpg

Stefan

 

[steamer]

That looks Great Stefan!

Are the valves mounted in cages?

Dave