On 09/13/2010 03:42 AM, Snag wrote:
Tim Wescott wrote:
On 09/12/2010 05:57 PM, Snag wrote:
wrote:
On Sep 12, 8:13 pm, Tim wrote:

These things have a header that comes off of the engine, then goes
into
a tube-shaped expansion chamber. See some examples
hehttp://www.mecoa.com/kb/aero/aircraft.htm

I'm thinking that I can fabricate one of these with a machined
header,
machined ends, and a section of tube. But it'll all be aluminum, so
how
to join the pieces?



Tim Wescott
Wescott Design Serviceshttp://www.wescottdesign.com


Could you use machine screws to hold the header to the front
machined end? And then run a threaded rod through the tube to hold
the machined ends.

Or use lost wax casting to make it as one piece.

Dan

That could be cast with a simple core . For that matter , if it's
one that has the inlet port at 90° to the main muffler , cast it as
a solid , machine the interior , cap the front with a threaded dome
. Built an R/C boat once upon a time . While I was saving up for the
radio gear it "got broke" . Long story ...

You would have to suggest that. And here I have a Vibration&
Stratton engine that's just crying out to be broken into bits and
recycled as all sorts of nifty stuff.

--

Tim Wescott

I've got 5 car/truck rims awaiting cool weather ... when they will join
the rest of the wheelium , extrudium , and OldChevyHeadium as ingots .
Do you subscribe to any of the hobby casting email lists ?

No! No no no no no no no!

When I retire, maybe yes. But not now -- I have other things that are
higher in the priority list than starting my own backyard foundry.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at http://www.wescottdesign.com/actfes/actfes.html