Subject: Right margin
From: ACRE NL
Date: 1/1/2002, 1:48 PM

Chris Cosman wrote:


     >      > > > What about a slot instead?
     >      > > > ...Chrissi
     >      > >
     >      > > A slot where Chrissi? Want to try this message again and "forward
     >      > > quote" the reference message so we know what you are referring to?
     >      > >
     >      > > Put this message at the bottom so things are in chronological order.
     >      >
     >      > OK, the hidden bolt hole on the upper right hand flange that you cannot get a bolt to angle into the hole and were considering a stud on the block (up to speed now? :)
     >      > .. so what about slotting the hole to the edge of the flange?
     >      > There are several ways to approach this:
     >      > 1. just change hole to a slot that breaks out of flange edge (simplest)
     >      > 2. same as #1 but move edge out further to beef up edge.
     >      > 3. move edge out far enough to use a slotted hole (no chance of corner breaking off) that would allow bolt to be screwed in most of the way then manifold correctly positioned and rest of bolts inserted. This is similar to the stud and nut approach, I just have disdain for studs (no comments please :)
     >      > ...Chrissi
     >
     >      A slot is a good idea Chrissi.
     >
     >      Studs have their place. Studs change the stress distribution in assemblies in a positive
     >      manner. Not a factor here however. Don't get me started on this or you will
     >      have to look at a bunch of scanned images of stress distributions in bolted
     >      and studded assemblies :-)>
     >
     >      Paul Lamar

     >      Paul, Just OTOYH, how long would I need my intake runners to be for the efficiency peak to be at 4900 RPM?  We plan to cruise there.
     >
     >      Chris
     >      microcosman.com

     I would have to figure that out but my guess is about 30 inches.
     The exact resonant frequency of a pipe is not only a function of its length
     but its diameter enters into the equation as well. Hard to calculate I suspect.
     Most of this stuff is determined on a dyno experimentally.

     Here is some data on the subject.

     BTW Chris can you make your left margin zero? Screws up the messages
     when you forward them if it is not zero.

     Paul Lamar




Margin like this?

--
Chris
microcosman.com


Yep.

Paul Lamar
 
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