Les Chenery rotary engine 1:5

[Saddo]

Would you like a copy of the manual for your Clarkson cutter grinder ?

 

[Rudirk]

Yes, that’s great. Then I could use this mashine right.

 

[Saddo]

We have one of these machines in our club, it took a while to understand the principles and make a few finger attachments and now it's a joy to have cutting tools that really cut. Enjoy your really lucky.
Brian.

 

[Rudirk]

Thank you very much.

 

[Rudirk]

I bought a new tool. A Komet holder wit a 0.9 mm tool. It’s a class of its own. It work perfekt.

 

[Rudirk]

That’s the result from today.

 

[Saddo]

You've been really busy, looks amazing. Just eight more to go

 

[bikr7549]

How are you tightening the cylinders onto the liner to make sure they are tight and always line up correctly? A wrench that uses the spark plug hole perhaps?

 

[Rudirk]

Why I must do this ? My English isn’t so good. I put the cylinder onto the lathe and first I though the front and zero my display. Then I make 5 fins . Near the spark plug while I have an other deep of the fins . I made a drawing with fin numbers and the right deep of them.
I hope that I have understand your question???

 

[Rudirk]

Sorry, now I understand your question .
Before I started this, I put the cylinders complete into the crankcase. Then I mark at each cylinder the position of the plug. This tool I use for getting out the cylinder.

In the Model engineer I found this. There was a article.

 

[bikr7549]

Ahh, very good, thank you. Exactly what I was wondering about. Ist es leichter auf deutsch, die Frage zu antworten?

 

[Peter Twissell]

If I read correctly, the position of each cylinder is defined by the point at which the thread becomes tight.
Is this correct?

 

[Rudirk]

Yes, German ist easier .
Yes, you have to install all cylinders an then you can mark the line for the plug.

 

[Rudirk]

here you can see it.At 48.

 

[Richard Hed]

Ahh, very good, thank you. Exactly what I was wondering about. Ist es leichter auf deutsch, die Frage zu antworten?

Wer sprechen sie zu?

 

[Rudirk]

Für mich ist das einfacher.

Not perfekt but ready. Now I’m looking for new problems.

 

[Rudirk]

Could somebody tell me something about the propeller and the rmp and the total weight of the engine. I will calculate if flying a plane is possible.

 

[Peter Twissell]

I have seen (i.e. on the internet somewhere) a model flying with a home built rotary. I believe it was a freelance design engine with accurate scale 'Gnome' external features and internals designed for added durability. IIRC the aircraft was an Avro 504.

 

[xpylonracer]

There's a Bentley rotary flying here.

xpylonracer

 

[Rudirk]

The Bentley is a bigger engine with a lot of power. I have the book an plan to build it.
The gnome does not have so much power. If I the rmp and the prop size I could calculate the thrust . And the weight from the engine.