3M Mintor 170 questions

[wgalligan]

On the drop in replacement thing.

yes... dimensionally they are the same on mounting and to the nose/ring or prop washer.  You may run into a problem with the header adapter hitting the top of the mount if you rengine is set back on the mount beams.  You can cure this either with a Karl Mueller header or Macs std header.  I made a modified mount for Lance on his because of this. If you set it up on a new build just make sure the engine is far enough forward on the mount

Wayne


> I can offer an answer for #1 only . . . .. . . 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.
> 
> GW <gw at gwair.com> wrote:For those in the know regarding the 3M 170::  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! 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! 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?  Many Thanks GW  cc: Don Kanak, Lance at Areoslave
> 
> Bob Kane
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> 
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