vederstein's latest activity

When it comes to the castings, just assume any mating surface is a machined surface. Therefore a mating surface in the casting is...

Thank you all for the encouragement. As I wrote earlier, I built the engine and failed. I was never able to get my valves to seal. I...

Well....no it does not. Simple, effective, durable and available components enhance and grow interest in modeling engines as in many...

Oh hell, not again. This hobby is dying. Why make the barrier to entry more difficult by criticizing how people make their engines...

I give in. This engine has defeated me. I started with spool valves. I redesigned to poppet valves. I made the poppet valves and cages...

...and finally the casting patterns in .stl format...

The solid model of the engine in Step format... Note that the step file is zipped.

...more part prints....

And now individual part prints...

First up we have assembly drawings...

Ok, For me, this engine was a failure. I just couldn't get the valves to seal worth a damn. I don't necessarily think it's in the...

Hi, A couple of things, how wide are the seats in the head? If they are quite wide,do you think they may seal better if they were...

Yeah, I did that. I also took the head and with the valve(s) and valve guide(s). Spring loaded them from the rear and turned them in...

Thus far all my attempts have failed. I've redesigned the engine for poppets and made the valves and vale guides twice. My second try...

I've been using professional CAD for 25+ years now. I've used Intergraph EMS, Solid Edge, Solidworks, Autodesk Inventory. I've played...