i've heard sintered steel works in such situations for rebuild enthusiasts,
i imagine the honeycombe
and higher porosity allows heat dissipation. Also great for manifolds that
wont burn up.
eg
<a href="http://www.sinterstahl.com/downloads/thyssenkrupp1999_krehlrau.pdf">http://www.sinterstahl.com/downloads/thyssenkrupp1999_krehlrau.pdf</a>
Straight out of the textbook: "force on fluid in x direction = rate of
increase of x-momentum"
Clearly a discussion of bend reaction. The speed stays the same, the
energy stays the same, the momentum change produces the force. Hence the
pyramids.
The man in charge of the definitions is always right.
However a more important question has arisen:
A mate has asked me to look at the transmission on his 1914 Brit; an
early kit car.
The transmission is of the continuously variable type. The motor (I
would guess 7bhp) has a faced CI flywheel about 16" diameter. A friction
wheel about 14" in diameter and 1"face width contacts the flywheel at
right angles to and on the face of the flywheel. The friction wheel is
the power takeoff and can be moved across the flywheel face to change
the ratio; neutral is in the middle where there is a small depression in
the flywheel face.
The original friction material appears to have been laminated paper and
doesn’t appear to have worked for long.
A replacement was made using brake lining material; didn’t have
sufficient friction and the reaction was increased (in an attempt to get
drive) until the crankshaft end snapped off.
Much machining later a number of materials have been tried:
Soft rubber; disintegrated in chunks
Hard rubber; burned up
Laminated conveyor belting (on edge) nylon reinforcing melted
Sole leather, bark tanned - smoked up
Any other suggestions?
I am tempted to try leather again with dressing, and see of there are any Kevlar reinforced high temp conveyor belt materials around.
Cheers
Steve
-----Original Message-----
From: <a href="/group/PipingDesign/post?postID=r2ODzIxkSk27L7fpnVcQKSv2Tktm6DA8pB_nE0nBqRMdodxIrCcR8OINcZca_gG0Vs-xPx8AmTYZi_W0ijfFCPStN-cdrVI">PipingDesign@yahoogroups.com</a> [mailto:<a href="/group/PipingDesign/post?postID=r2ODzIxkSk27L7fpnVcQKSv2Tktm6DA8pB_nE0nBqRMdodxIrCcR8OINcZca_gG0Vs-xPx8AmTYZi_W0ijfFCPStN-cdrVI">PipingDesign@yahoogroups.com</a>]
On Behalf Of Christopher Wright
Sent: Friday, October 21, 2005 3:23 AM
To: <a href="/group/PipingDesign/post?postID=r2ODzIxkSk27L7fpnVcQKSv2Tktm6DA8pB_nE0nBqRMdodxIrCcR8OINcZca_gG0Vs-xPx8AmTYZi_W0ijfFCPStN-cdrVI">PipingDesign@yahoogroups.com</a>
Subject: Re: [PipingDesign] List Reborn
On Oct 20, 2005, at 2:54 AM, Steve McKenzie wrote:
> If you wish to redefine momentum as
> the product of speed and mass
You can't escape the physics. If I were to go through the whole thing
again using the some phrase like the 'magnitude of the momentum' which
is a scalar, and which, when it changes produces a change in momentum,
that'd be OK, wouldn't it?
Christopher Wright P.E. |"They couldn't hit an elephant at
<a href="/group/PipingDesign/post?postID=eicIFnC6xZbHS0st8Mt_Teuaavbx3JxFs7exqwEBa4Dl7fYk3dJOA9yIIO3yTABIrowIVtETKi8m">chrisw@skypoint.com</a> | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania1864)
<a href="http://www.pipingoffice.us/">http://www.pipingoffice.us/</a> =========================================Main site: <a href="http://www.pipingdesign.com">http://www.pipingdesign.com</a>
Yahoo! Groups Links
-- Internal Virus Database is out-of-date. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.10.12/75 - Release Date: 8/17/2005 -- Internal Virus Database is out-of-date. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.10.12/75 - Release Date: 8/17/2005 ========================================= PipingOffice - Excel Spreadsheets for Piping Calculations <a href="http://www.pipingoffice.us/">http://www.pipingoffice.us/</a> ========================================= Main site: <a href="http://www.pipingdesign.com">http://www.pipingdesign.com</a> Yahoo! Groups LinksReceived on Fri Oct 21 12:08:00 2005
This archive was generated by hypermail 2.1.8 : Tue Mar 04 2008 - 11:40:45 EST