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Old 10-24-2012, 10:44 AM   #101
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If its ok with Ausdier the more info we can get on this build the better.


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Old 10-25-2012, 03:26 PM   #102
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Sorry guys I have been in hospital for a little time.
Here are a few pictures of something like what has been suggested except I tapped the original blocks after the guides are press in.
The picture represents an M6 thread which should then allow any sort of addapter to be made and then screwed in to take either the exhaust or a carby mount of the groups choosing.
This way there are no real changes to the original parts and if an exhaust or carby design needs to be changed you only need to make the appropriate addapter and screw it in.
As for those two small bolts that Dave is concerned about, I think that due to most of the parts being ally these bolts wil be more than fine.
Still just need a design that everyone wants for an exhaust pipe and carby.
If you would like to see some pictures just send me some info.
Then when everyone is happy I can whip up some workshop drawings for everyone.
Hope this helps.


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Old 10-26-2012, 08:21 AM   #103
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I think it would be a good idea to fit a muffler of some description to these engines, because the exhaust is going to make quite a bit of noise with an open port like that.
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Old 10-28-2012, 03:30 AM   #104
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Hi Ausdier, sorry to hear you have been in hospital, hope all
is well with you.
Your 3d view 07, illustrates one of the issues I was grappling with
in that the valve sits in that recess of the port, effectively sealed
off untill it is lifted 1mm. This leaves only 2mm of travel to exhaust,
resulting in a tiny opening for the gases to pass through.
( 1/3rd of the distance across a 6mm hole, not opening enough
to allow the engine to breath properly, in my opinion )

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Old 11-01-2012, 11:44 AM   #105
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Has anyone seen one of these engines running or does someone know where there is a build log.
Something on youtube maybe ?
Just a little concerned about the compression ratio and the overall operation.
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Old 11-01-2012, 08:52 PM   #106
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Ausdier. I have done a search for more info on this engine but come up blank. I contacted the designer with the above questions but no reply so I have serious doubts about this engine. I would also like to thank you for your time in supplying 3d images of the model. They are a great help
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Old 11-03-2012, 03:27 AM   #107
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THE CURSE OF THE BASE PLATES. Just finished the batch of base plates and on inspection some of the holes looked out of alignment. Out with the digital calipers and yes, some holes were nearly 1mm out. Out with the MIG plugged them up and tried to re-drill. I dont know what mig wire consists of but it just melted the drill bits. At this stage I remembered the holes were drilled too large anyway, I thought getting a new length of steel and starting over was the best option. This time more care and no short cuts like it should have been done in the first place.
We live and learn.
P. S. Anyone know what drills they use for drilling out spot welds?
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Old 11-03-2012, 04:41 AM   #108
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This is the sort of bit that I use.
The centre is spring loaded.
It is just like a hole saw.
You cut through the piece you dont want then grind/sand down flat what is left.

Also am working on some ideas to keep this engine alive and to not waste any parts that are already made.
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Old 11-03-2012, 10:51 AM   #109
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Thanks Ausdier. It looks like it cuts around the hard welded part.
We will end up with a working engine but I got a feeling it wont be smooth sailing
We have a great forum to help us along the way
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Old 11-04-2012, 06:30 AM   #110
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Any thoughts


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Last edited by ausdier; 11-04-2012 at 06:36 AM.
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