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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Colin,<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I have some brief experience with the AR80
and was unable to keep the header tight to the motor for more than 2 or 3
flights (without a header support). The other guys can respond but I think you’ll
find the need to use a header support with this mount.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim W.</span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>colin chariandy<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, September 19,
2007 9:19 AM<br>
<b><span style='font-weight:bold'>To:</span></b> NSRCA Mailing List<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion]
Mounting Dimension - Hyde "Type C"</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Does anyone know where the limit lies for adding support to headers
with the newer mounts (AR60, AR70, AR80 etc)? <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>If the short Hatori muffler and header is used with the AR80 do we
need some additional support?<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Colin.<br>
<br>
<b><i><span style='font-weight:bold;font-style:italic'>Lance Van Nostrand
<patterndude@tx.rr.com></span></i></b> wrote:<o:p></o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>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:</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>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<o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>----- Original Message ----- <o:p></o:p></span></font></p>
</div>
<div style='font-color:black'>
<p class=MsoNormal style='background:#E4E4E4'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>From:</span></font></b><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:rcaerobob@cox.net" title="rcaerobob@cox.net">Bob Pastorello</a> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>To:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:nsrca-discussion@lists.nsrca.org"
title="nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</a> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Sent:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> Tuesday, September
18, 2007 7:31 PM<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Subject:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> [NSRCA-discussion]
Mounting Dimension - Hyde "Type C"<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>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....</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><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></span></font><o:p></o:p></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
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