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<DIV><FONT size=2> I talked with Michael Rudinsky from Boca
Bearing while in Toledo. He did measure the bearings in my 3M 170
engine. The frt. bearing is the same as the frt. bearing for the O.S. 140
RX. Michael told me the rear bearing is a standard size, but they do not
stock it. Michael told me that he would order some and call me when they
came in. I have not heard from him yet. I will call him tomorrow and
let the discussion page know what he came up with. In Toledo he also told
me he would be able to offer the bearing in the ceramic version for those that
are interested.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2> On the installation of the 3M 170 engine
question. I installed my engine on a Hyde ARI (A) mount for an O.S. 140
RX. It was a direct bolt in deal. The exhaust clears the mount with
now problem. The 3M engines use an o-ring manifold that the
header attaches to, just like the O.S. You can use an O.S., Harori,
or 3M header on the 3M manifold, and will all clear the Hyde
mount. The only difference between the 170 and the O.S. 140 dimensionally,
is the 170s cylinder is slightly taller and larger in diameter, otherwise it is
all the same i.e. exhaust location, throttle hook up, and fuel line hook
up. The needle valve is slightly higher on the O.S. than the 170, but on
the 170 you can change the mounting angle of the needle valve if needed to line
up with an existing hole in your fuse if swapping from a O.S. 140.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Hope this answers your question,</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Mike Darr</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=getterflash@yahoo.com href="mailto:getterflash@yahoo.com">Bob
Kane</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> Thursday, May 01, 2003 3:30
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: 3M Mintor 170
questions</DIV>
<DIV><BR></DIV>
<DIV>I can offer an answer for #1 only . . . .. . .</DIV>
<DIV> </DIV>
<DIV>Mike Darr had his 3M 170 at the Toledo show, the Boca person at the show
measured the bearings so they could offer replacements. I would call Boca to
see if they are available or when they may be available.<BR><BR><B><I>GW
<<A href="mailto:gw@gwair.com">gw@gwair.com</A>></I></B> wrote:</DIV>
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<DIV><FONT face=Arial size=2>For those in the know regarding the 3M
170::</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>1: I notice the rear bearing is a double back
ball bearing, I do not know what this truly means, but will Boca or the US
based 3M retailers have the replacement bearings available? Any other
substitutes? Don't want to be needing a bearing in the middle of the season
and be waiting for a bearing from Italy!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>2. Same question as above but regarding rings?
Do the retailers like BuyRC, PlanesPlus, AeroSlave, etc, have
replacements in stock, or plans to? Again, I do not want to
be without use of an engine waiting on a ring or bearing from
Italy!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>3. Will the 170 be a drop in replacement for
the OS 140? I have heard the bolt patterns are the same, but what about the
position of the nose ring, exhaust,etc? Completely interchangeable with no
refitting needed?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Many Thanks</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>GW</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>cc: Don Kanak, Lance at
Areoslave</FONT></DIV></BLOCKQUOTE><BR><BR>Bob Kane<BR>getterflash@yahoo.com
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