Engines > From Plans

Ohrndorf V12, new challange

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fumopuc:
Hi Everybody,
as already mentioned earlier, a V12 designed by M.Ohrndorf will be my next challenge.
When I have started model engineering in 2008 or 2009 my dream was to build a V8 or V10 some day.
Now some years later I feel good to start such a project.
In 2008 it has been the book of Mr. Schillings, which was the one day model I have been focused on.
After some years passing now, I have changed my mind, because this Schillings or Luther V8 or V10 does hide all the moving parts inside and under covers.
Only visible action is a ruining belt.
Totally different, the design of Mr Ohrndorf.
The engine is air cooled and all the rockers, springs and  push rods are visible in their motion.
So it will be a V12 instead of a V8 or a V10.
It took some time to check, if my machines will be able to cover all the necessary operations, but it seems to match.
It will be tight but I am full of hope.

fumopuc:
Today I have started to make the fixture for the crankcase.
It is a bit special, because of the necessary action to use the crankshaft center line as a origin for all machining.
But after two days working, there are a lot of chips at both milling machines and we have the first real parts of the crankcase fixture.

Vixen:
Hello Achim,

Welcome to your new project :hi:

A V12 is an ambitious undertaking, lots of repetitive cylinder and valve gear stuff. CNC will be a great help with that.

The crankcase fixture looks good and robust, a sound basis for accurate work. Will the crankcase fixture also double up for the crankshaft?

Cheers

Mike

gerritv:
That is a fascinating engine. We share some machinery similarities, it will be fascinating to follow your build.

gerrit

Roger B:
That's a fine challenge Achim  :ThumbsUp:  :ThumbsUp:  :wine1: I am used to checking all the dimensions against my machines as well  :thinking:

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