Author Topic: 1867 Otto and Langen Free Piston Engine  (Read 32306 times)

Offline zeeprogrammer

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #60 on: March 25, 2016, 01:07:13 AM »
Awesome. Just really awesome.
Beautiful work.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline Flyboy Jim

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #61 on: March 25, 2016, 02:27:41 AM »


Im not sure whats for dinner but here is a shot of the completed cylinder/column. Im thinking that the slide valve body may be next we will have to wait and see.

Thanks for checking in and the continued support; I think Max is breathing a huge sigh of relief about now, having all this behind him.

Dave & Max

Dave and Max,

That's a really impressive piece of work!  :ThumbsUp: I bet Max is relieved. Thanks for posting.

That's definitely got to be a candidate for: "You know your a machinist when:"........................."You spend 2 weeks making a new candle holder for the dining room table!"   ;)

Jim



Sherline 4400 Lathe
Sherline 5400 Mill
"You can do small things on big machines, but you can do small things on small machines".

Offline fumopuc

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #62 on: March 25, 2016, 05:01:58 AM »
Fantastic, thanks for showing the different set ups.
Kind Regards
Achim

Offline b.lindsey

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #63 on: March 25, 2016, 01:31:00 PM »
Amazing stuff....the base and column are a work of art by themselves!!

Bill

Offline Dave Otto

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #64 on: April 28, 2016, 01:12:18 AM »
Hi Guys

Here are some more pictures from Maxs shop; he is continuing to make good progress on his Otto & Langen.


One of the 12L14 off cuts from the column was used to make the slide valve body and the cover.


The shaper was used to square up the valve parts. It was also used to machine the running surfaces of the valve parts as it leaves a much nicer finish than an end mill.


The slide valve body has been finished and mounted on the engine. Max was not too fired up about taking the torch to all his hard work and soldering the valve body in place. He decided to screw it to the column with the four 4-40 flat head screws that you see in the channel. The body will be sealed to the column on final assembly.


Here is the slide valve and cover; the slide valve is made from cast iron to help prevent galling. The part sticking out of the bottom of the slide valve is one of the ignition points. It is spring loaded into the slide valve.


Next are a couple shots of the completed assembly installed on the column.





The next part under construction is the domed cover for the exhaust valve; here it is being roughed out in the lathe.


The dome is generated using the incremental cut method. Here it is roughed out and just needs some file work and polishing.

Thanks for checking in,
Dave & Max


Offline Flyboy Jim

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #65 on: April 28, 2016, 04:13:35 AM »
Dave and Max,

I was thinking about your project the other day and was wondering how it was going. Thanks for the update.

Jim
Sherline 4400 Lathe
Sherline 5400 Mill
"You can do small things on big machines, but you can do small things on small machines".

Offline Dave Otto

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #66 on: May 01, 2016, 01:00:34 AM »
Thanks for following along and checking on us Jim.

I'm still kicking around going to the Steam up (first weekend) this summer. Looks like the GEARS show is not going to happen again this year; I think that it may be over for good.

Dave

Offline 10KPete

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #67 on: May 01, 2016, 01:12:59 AM »
Thanks for following along and checking on us Jim.

I'm still kicking around going to the Steam up (first weekend) this summer. Looks like the GEARS show is not going to happen again this year; I think that it may be over for good.

Dave

What? What the heck happened?  :rant:   :Mad:

Pete
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SB 10K lathe, Benchmaster mill. And stuff.

Offline Dave Otto

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #68 on: May 01, 2016, 01:24:41 AM »
I don't know the details, I recently talked to someone who lives over there and he indicated to me that it wasn't going to happen. Too bad really; the original show in Portland which was held at the National Guard Armory near PDX was a perfect place. easy access, lots of room, lots of hotels close by. etc.  I'm not sure why the show moved from there but I heard that there was a new CO at the armory and he didn't want to deal withe the model engine show. There must be more to it because as far as I know we were pretty easy to deal with.

I guess we will have to wait and see what happens.

Dave

Offline Don1966

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #69 on: May 01, 2016, 02:45:53 AM »
More awesome work and enjoying following your progress....... :praise2:''


Don

Offline fumopuc

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #70 on: May 01, 2016, 07:31:34 AM »
Hi Dave and Max I like this thread very much. A lot of new things to learn. Max has made a great progress.
Kind Regards
Achim

Offline Dave Otto

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #71 on: May 15, 2016, 04:54:17 PM »
Don & Achim, thanks for the nice comments and your continued support.

Here are some more progress photos from the Otto & Langen.

Continuing with work on the exhaust valve cover; it is flipped around in the lathe and a ball end mill is used to hollow out the inside cavity.



Then moved over to the mill to square up the flange and drill the mounting holes.



In this picture the exhaust valve reed is sandwiched between the two pieces of stock to drill the mounting hole. The valve is made form .002 feeler gage stock.



Next the base has been laid out and sawed roughly to shape.



Using the rotary table the facets are machined and the decorative ball end mill detail is also added.



Back in the lathe the center bore is opened up to accept the cylinder/column.


Here is a family shot of the progress to date.



After some discussion and arm twisting it was decided to not make the exhaust throttle valve that is part of the original prints. It is not a particularly good looking valve and way too large for the rest of the engine. I had this little union cock and offered it to max and we both think it looks much better. It will eventually have a length of 1/8 brass tubing added to finish it off.

Thanks for checking in,
Dave & Max
« Last Edit: May 15, 2016, 05:21:49 PM by Dave Otto »

Offline Tennessee Whiskey

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #72 on: May 15, 2016, 05:19:33 PM »
I would venture to say that there are few machined pieces that can be considered "fine art"; this is definitely one.  You two are awesome  :cheers:.

Cletus

Offline crueby

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #73 on: May 15, 2016, 06:12:29 PM »
Simply stunning!   :NotWorthy:

Offline Chipmaster

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Re: 1867 Otto and Langen Free Piston Engine
« Reply #74 on: May 15, 2016, 06:48:10 PM »
Your build log is inspirational.

Andy