Oval Shaped Valves

[Mark Pitts]

Be interesting to see a few pictures...

Mark

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From:  Hans Hintermaier[SMTP:HIHA at GNF99M.nefo.med.uni-muenchen.de]
Sent:  Tuesday, September 10, 1996 11:13 AM
To:  diy_efi at coulomb.eng.ohio-state.edu
Subject:  Oval Shaped Valves


Hi all,
I own some books of "Apfelbeck", his philosophy was the "radial 
diametral" 4 valve head. His construction goes back to the '30th when 
he built up his first head for 500ccm singles. The last engines I know 
were prototypes for KTM and Rotax around '92. Between he made F2 
4cyl. 2lit., BMW sidecar racing- and other engines.
He also experimented with more than 4 valves, but his flowbench 
results for his radial-diametral head were much better than for any 
other concept. 
If anybody of you wants to construct a new head, :-) I can give you the
book-titles or ISBN, or some GIF's of his latest KTM-head. They 
rebuilt an LC4 engine with it, it makes more than 90HP out of 500 ccm...
There are also lots of easy theoretical and practical tips for every
motor-screwer included. Sorry- only in german language, I think.
Hans
hiha@ brain.nefo.med.uni-muenchen.de
Munich / Germany