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<DIV><FONT face=Arial size=2>Firing stroke impulse, inertia from moving parts,
size of components(prop, piston,square of stroke) all have an effect on
vibration. I have been trying a few things in search of that all elusive
vibration free setup. Does a 3 blade prop run smoother then a 2 blade prop?
I have been making nose rings out of 1/8" urethane sandwiched between
1/32" ply. The urethane holds the nose in place without having to
have too snug of a fit at the crank end and it so far doesn't seem to
wear as quickly as lined nose rings. On my Entropy with an OS
1.40 is super smooth and quite at idle and through most of the rpm
range. My Aries with the Mintor 1.70 bangs like a 4-stroke at idle and
there was a noticeable reduction in vibration when I switched the nose
rings. I make a home made soft mount using Bob P. instructions
and it weights about 3.3 oz and handles the Mintor quite
well. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>you can view it at this link</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><A
href="http://www.rcuniverse.com/gallery/galleryCat.cfm.cfm?memberID=6463&CFID=862285&CFTOKEN=3b3a471-7dc5463c-19d1-4704-bd2f-605a2511e969">http://www.rcuniverse.com/gallery/galleryCat.cfm.cfm?memberID=6463&CFID=862285&CFTOKEN=3b3a471-7dc5463c-19d1-4704-bd2f-605a2511e969</A></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wayne G.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=ronlock@comcast.net href="mailto:ronlock@comcast.net">ronlock</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 03, 2004 8:05
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: TEST- now motor mount
Poll</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>The rotational impulse from the firing stroke is
a much stronger vibration</FONT></DIV>
<DIV><FONT face=Arial size=2>source than the reciprocating parts.
That's one of reasons the 4 strokes</FONT></DIV>
<DIV><FONT face=Arial size=2>vibrate more, each firing stroke is stronger than
in a 2 stroke that fires</FONT></DIV>
<DIV><FONT face=Arial size=2>twice as often.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Later, Ron Lockhart</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=jhughes@hsonline.net href="mailto:jhughes@hsonline.net">Jeff
Hughes</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 03, 2004 12:22
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: TEST- now motor mount
Poll</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I'm not sure I understand, shouldn't we be more
concerned about up and down and side to side motion of a single cylinder
engine, rather than the rotational (torque) motion? I would think most of
the vibration is from the counterweight and piston motion, not firing
torque?</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=edbon85@optonline.net href="mailto:edbon85@optonline.net">Ed
Miller</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, January 02, 2004 3:49
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: TEST- now motor mount
Poll</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Hanson Rotomount and Clayton Foster nose ring
get my vote. The Rotomount can be made very light and it's adjustable
for firmness and thrust angle. I've had 5 planes with it without any
problems. Works on the same principle as the Hyde mount in that it allows
the engine to rotate along the crankshaft centerline. A side benefit is it
costs less than 10 bucks to make. </FONT></DIV>
<DIV><FONT face=Arial size=2>Ed M.</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=natpenton@centurytel.net
href="mailto:natpenton@centurytel.net">Nat Penton</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, January 02, 2004 5:02
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: TEST</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Bill I believe if we could get people to
convey their likes and dislikes on engine mounts we could all benefit.
(At least we would'nt have to bring up the downwind
turn). Nat</FONT>----- Original
Message ----- </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=flyinbill1@bellsouth.net
href="mailto:flyinbill1@bellsouth.net">William C. Harden</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, January 02, 2004
3:16 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: TEST</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Quite on the
list today, isn’t it?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Bill<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original
Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> <A
href="mailto:discussion-request@nsrca.org">discussion-request@nsrca.org</A>
[mailto:discussion-request@nsrca.org] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Dwayne & Nancy
Brown<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday,
January 02, 2004 12:34 PM<BR><B><SPAN
style="FONT-WEIGHT: bold">To:</SPAN></B> Society of Antieque Modelers;
Slow Flight RC; Senior Pattern Association; Pattern List; Pattern;
GSAL<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B>
TEST</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT
face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">TEST</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT
face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Dwayne</SPAN></FONT><o:p></o:p></P></DIV></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>