3M Engines

[Jerry Budd]

>In a message dated 4/26/03 6:39:41 PM Pacific Daylight Time, 
>kvelez at rochester.rr.com writes:
>
>>Hello everyone,
>>
>>I have a question to those using the 3M Mintor engines. I'm trying 
>>to figure out if the exhaust port bolt pattern is the same as in 
>>the OS 1.40 RX. I can not use the stock heather on my plane set up 
>>because it hits the engine mount and I was wondering if the Mac's 
>>heather for the OS will fit.
>>Thanks in advance.
>>
>>
>
>
>Same pattern as OS
>
>Bob


Except that the header screws for the 3M are 3.5mm instead of 4mm as 
used on both the OS and Webra.  The Macs header is setup for 8-32 
screws which works fine with the 4mm screws but you'll need to use 
either some small spacers or slightly oversize washers with the 3.5mm 
screws that come with the 3M motor.  I used oversize lock washers and 
it worked just fine.

Jerry



-- 
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Jerry Budd
mailto:jbudd at qnet.com
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