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<DIV><FONT face=Arial size=2>These type C's are really new (the Mk III's
anyway). I would assume Merle's dimensions have not really changed.
Here's some info I got from Merle directly that others may find
interesting. I sure did:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>Hi Lance,<BR><BR>I don't have any pictures. The new "C" MKIII mount
(isolator) looks the same as the earlier ones. Now I am using rectangular
1/4" x 1/2" aluminum beams oriented/attached flat on the mount. This makes
the mount now usable with 18 pattern engines, including the OS160 which is a
wide crankcase engine.<BR><BR>Each beam has 6 drilled and tapped 6-32 holes -
permitting a wide application range. Beams positioned flat are even
stronger. Overall length from firewall to thrust washer is 6 3/8" for all
YS, 3M, WEB, OS140, OS160, and OS120-200 4 strokes. Use of different beam
bolt patterns even permits 6 1/4" FW to TW for many engines!!<BR><BR>The
"AR"(A)s (2 engine lug holes attachment) are being discontinued and being
replaced with all 4 engine lug attachment aluminum beams. The newer
mounts, that replace them, are being rated by "CDR" (current drain
reduction). The "CDR" range is from 60-95%, and the mounts will be
identified as "AR 60", "AR 70", "AR 80", "AR 85", "AR 90", and "AR 95", plus a
very light weight MICRO series, that are "MR 80", "MR 85", "MR 90", "MR
95".<BR><BR>The highest CDR numbers are the softest mounts and require more
airframe clearance for idle movement, plus softer mounts requires exhaust
attachment methods as we have discussed in the past, or a method for the exhaust
system to endure the "ride" or additional movement - overall benefits of the
very soft mounts are to the major high value airborne equipment - such as
servos, pots, gears, linkage, including entire airframe.<BR><BR>All are for 4
engine lug hole attachment and position the most popular engines at 6 3/8" or 6
1/4" from firewall to thrust washer. <BR><BR>The "AR 80" is highly recommended
by Mike Hester for the "beastie DZs".<BR><BR>I will continue the firmer Type "C"
MKIIIs.<BR><BR>The CDR rating is an average for engines from 1.20 to 2.0 cuin. -
the rating is approximate for a 160 size engine. The aluminum beam mounts
will no longer be engine specific - except for those that incorporate the nose
ring - the ARI series must be set up for a specific engine due to varying front
housing diameters and etc..<BR><BR>I'm sure this will be confusing for a while -
but with consistent overall length and wide engine applications there will
actually be considerably fewer mounts to chose from - approximately 10 if
all the CDRs are in the mix - vs 25 to 30 - Central carries the "AR 80", and may
include the "AR 60"s and "AR 70"s. Also I have modified the firewall
attachment bolt pattern to permit use of either 3 or 4 attachment screws - the
new bolt pattern permitts the selection of either a "triangle" or "rectangle"
pattern - making the mounts interchange with other brands - plus permitting the
use with many engines makes the mounts fairly universal. The pattern guys
like to interchange engines, they can now also interchange some
mounts..<BR><BR>Best,<BR><BR>Merle<BR></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=rcaerobob@cox.net href="mailto:rcaerobob@cox.net">Bob Pastorello</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> Tuesday, September 18, 2007 7:31
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Mounting
Dimension - Hyde "Type C"</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Would anyone who is using this mount with an OS
1.60 tell me the minimum firewall to spinner backplate dimension this mount
will permit? I have only so much nose....</FONT></DIV>
<DIV><FONT face=Arial size=2><BR>Bob Pastorello<BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A><BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A></FONT></DIV>
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