<DIV>Mike, your my hero.</DIV>
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<DIV>I am looking forward to seeing that baby on your Oly at the end of the month at the annual Cursed Earth pattern competition (AKA Dayton).<BR><BR><B><I>mdarr00@comcast.net</I></B> wrote:</DIV>
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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>
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<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>
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<DIV><FONT size=2>Hope this answers your question,</FONT></DIV>
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<DIV><FONT size=2>Mike Darr</FONT></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>
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<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>
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<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>
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<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>
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<DIV><FONT face=Arial size=2>Many Thanks</FONT></DIV>
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<DIV><FONT face=Arial size=2>GW</FONT></DIV>
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<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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