24cc DIESEL ENGINE FROM SOLID

[dean clarke 2Participant @deanclarke2]

Here’s the start point for this project, a lump of 6061 T6 ally, 4″square by 5″ long.

Next step is to machine the rear face to establish a fixed point datum and machine the inside of the case from the rear to give me a finished case internal and the ability to hold the case for the next machining operations. This also makes sure that everything done from here on in is true and square to the crankshaft centerline.

Next step is to manufacture a purpose made mandril to mount the case block on so I can then machine the front portion of the case and the front bearing housing. Photo below shows progress to date.

Now it’s off to the milling machine to start the profiling operations.

[DiogenesParticipant @diogenes]

This looks great fun.

..rather your fingers than mine..😀

[bernard towersParticipant @bernardtowers37738]

Just what I was thinking!!!

[Roger BParticipant @rogerb61624]

A carburated ‘model aircraft’ style diesel or with fuel injection ?

[dean clarke 2Participant @deanclarke2]

This project is a “standard” model aeroplane control line engine. Yes, the plan is to also build and fly an enlarged version of the aircraft ,that the original engine flew,  and fly it control line. Let’s see how we get on.

Cheers

Dean

[JasonBModerator @jasonb]

Looks good so far, hope you can hang onto the larger version!

[bernard towersParticipant @bernardtowers37738]

I would think you would need a centre post or an assistant to hang on to when you fly that. Lokking forward to it!

[Roy VaughnParticipant @royvaughn26060]

Looks like it could be a rear induction team race motor.  Or maybe a giant Comp Special for a ten foot Kandoo?

[noel shelleyParticipant @noelshelley55608]

When you come to the compression ratio you could drop it from the original as there will be less heat loss to the cylinder walls and chamber. This in turn will reduce the load on the crank and other components. Starting could be interesting. Good Luck Noel.

[dean clarke 2Participant @deanclarke2]

Hi Noel, the engine is variable compression. should be a doddle to handle.

Dean

[dean clarke 2Participant @deanclarke2]

Here’s a couple of pics of the original sized replica I’ve already built. These also were machined from solid, no castings.

 

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