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<DIV><FONT face=Arial size=2>Lance,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The bolt does not thread into the rubber on the
mount I have. Bolts go through the runner and have nuts on the other
side, A spacer keeps you from crushing the rubber too much and has washers
to prevent the bolt from pulling through. Maybe there are other tyles, but
this is the only type I have seen. It was a true DB VibraDamp beem style
mount. This was the second one I had used through the years. The
biggest thing I do not like about them is you need to keep the rear of the
enginge centered. Almost need a nose ring type device in the rear to keep
the engine centered in the rear just as you do in the front.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Paul</FONT></DIV>
<BLOCKQUOTE
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=patterndude@tx.rr.com href="mailto:patterndude@tx.rr.com">Lance Van
Nostrand</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, December 15, 2007 11:06
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Soft
Mounts (Beam)</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Sorry to be naive but a bolt screwed into rubber
will not easily pull out? The DB isolators have an embedded blind nut in
them.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I've been using isolators from mcMaster that are
virtually the same as the DB ones. McMaster has the advantage of
offering male/male fem/fem or the male/fem we are used to.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>--Lance</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
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=plachance@cox.net href="mailto:plachance@cox.net">Paul LaChance</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, December 14, 2007 6:37
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Soft
Mounts (Beam)</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Lance and others interested,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Find a bet that is bigger than the isolator in
all direction. Mine was for the blade drive on a riding mower. I
cut the pieces to the original dimentions using a scroll saw. The I
drilled the holes in the rubber with a small drill bit and worked my way up
to the right size. It takes SEVERAL times drilling with the correct
size drill bit to actually open the hole properly. The rubber will
keep trying to strech instead of letting the bit drill cleanly. Then,
mount as usual. I have used these home made isolator for about 20
flights with no sign of wear. Until that time they were cracking or
turning into gummy bears about 1 a day, so every 4 days of flying
required all 4 isolators to be replaced. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Strangly I never had this problem about 10
years ago. I do not know if they changed the rubber they were made
from, but the new rubber does not last like the old rubber did. Also
the ones for World Engines brand mounts work but are VERY hard and
stiff. They shook the plane terribly and had to be removed after 2
flights. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Paul</FONT> </DIV>
<BLOCKQUOTE
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=patterndude@tx.rr.com href="mailto:patterndude@tx.rr.com">Lance
Van Nostrand</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, December 14, 2007 7:28
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Soft
Mounts (Beam)</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Paul, intersted in more details of how you
fabricated an isolator from a belt.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Still, anyone melting vulcanized rubber has
some serious cooling problems.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>--Lance</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
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=plachance@cox.net href="mailto:plachance@cox.net">Paul
LaChance</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, December 14, 2007
6:10 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Soft Mounts (Beam)</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I had the same thing happen. Even a
new set just purchased did the same thing. I ended up making my
own out of a belt for a riding mower. The belt was $10 and you
could probably make about 100 isolators out of it. The good thing
is it is designed to take the heat and be break resistant. The
cloth molded into it makes it almost impossible to tear. Just make
sure you cut the piece to shape and drill the holes accurately. I
used the home made isolators at the Triple Tree contest this year.
Give it a try. It seemed to have the damping as the priginal
isolators.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Paul</FONT></DIV>
<BLOCKQUOTE
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=billt2@verizon.net href="mailto:billt2@verizon.net">Bill
Thompson</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, December 14, 2007
6:47 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Soft
Mounts (Beam)</DIV>
<DIV><BR></DIV>
<DIV><FONT face="MS Serif" size=2>Has anyone had the rubber for these
mounts soften and melt. This is the second time in the last year it
happened.The mounts are MK using Dave Brown VibaDamp 4/C
Isolators.</FONT></DIV>
<DIV><FONT face="MS Serif" size=2>BillT</FONT></DIV>
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