Les Chenery rotary engine 1:5

Rudirk · Nov 17, 2019

Hallo,
a few years ago I asked for some information for this engine. I saw it on a video.
Many problems ( no time, other projekts....) had stopt it.
Now I have all informations I need an I try to build this wonderfull engine.
I have the original plan, the building history from model engineer and 100 photos from building this engine.
Today I negotiate for castings.
There are many questions an I hope someone could help me here.
First I want to build the valve guide.

The red section shows my problem. First I must finish a tool for .437 DIA. But how could I turn the section between this DIA and the .190 drilling ?

Sorry for my bad english.
I hope you could understand me.

Rudi

glue-itcom · Nov 17, 2019

His engines are stunning, a number are on show at the Shuttleworth Collection, I took some pictures to share

The 14 cylinder rotary is rather special

Best regards, Nigel

Rudirk · Nov 17, 2019

There are no words to describe this engines. They are perfekt.

ninefinger · Nov 18, 2019

First I've never made the engine so this is just my thoughts...
Out of context its hard to say without seeing the assembly for that section. What is the purpose of the .437 diameter? Why is it chamfered from there to the .190 diameter? Is it important or is it drawn from an "as made" point of view? Does the .437" diameter hold an o-ring or similar? The inside angle and thickness at the tip does not have a dimension so not important?
2 choices - build it as drawn or as you think it needs to be.

My first impression is the inside angle is not important if no dimension is shown, so make the .437" with a small grooving / boring bar, and the angle shown is the land of the 118 degree tip of a drill from making the .281 opening (with detail omitted for the little bit that would not be taken by the drill being smaller than the .437" groove) - see my first image.

My second though /guess is that a custom bit is ground to finish that area. A custom tool can make it in the opening and work to make the groove and angle all in one...probably the way to go seeing as you need a very small tool for the groove anyway. (2nd and third images).

Mike

Chiptosser · Nov 18, 2019

Use the .281 Drill

Rudirk · Nov 19, 2019

https://drive.google.com/drive/folders/0B6QkfCSsH1D-S3pMXzFOdjM5SUE

This is the link to the pictures.
Thank you for your tips. I will try it soon an show you the result.

xpylonracer · Nov 20, 2019

Nice pictures of the build, thanks for sharing.

karlw144 · Nov 20, 2019

Great pictures, some very nice setups that I hope to use in the future. Thanks for the post.

Rudirk · Nov 20, 2019

Hallo, I have used all your tips. Here is the result.

I think, I can use this part.

Rudirk · Nov 21, 2019

Here are the next parts.

bikr7549 · Dec 1, 2019

Hello,
I am trying to find a set of plans for this engine, the Gnome. Stephen Wessel and Les Chenery seem to be the sources for plans but I have not been able to track down a contact or source for either. If you know where I can buy a set of these please let me know.

Bob

Rudirk · Dec 1, 2019

[email protected]
Here I bought my first plan.

Rudirk · Dec 1, 2019

http://modelenginenews.org/suppliers.html#chenery

[EMAIL][email protected][/EMAIL]

I hope you could get the plan by this way.

bikr7549 · Dec 1, 2019

Thank you Rudrik, email sent to John.

Rudirk · Dec 1, 2019

I hope you get a answer.

bikr7549 · Dec 1, 2019

Almost immediately I got a very detailed email response of plans available with costing. Thanks again!

Rudirk · Dec 1, 2019

That’s great.

Rudirk · Dec 8, 2019

Hallo bikr7549,
if you want to have some informations please send me a email .

[email protected]

Rudirk · Dec 27, 2019

Hallo, I am waiting for my castings an I have startet my 3D printer for fun.
In January I will get first models for the engine. It is made by sand casting from a profession foundry.
Now I’m printing cylinders for the model.

Rudirk · Jan 1, 2020

now are a few parts printed.

Les Chenery rotary engine 1:5

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