O.S. pattern motors

[Chris Moon]

John:
    I have been running the 140RX all season.  The only issue ever has 
been the stock rear bearing - it is good for a maximum of 75-100 
flights.  I would replace it with the sealed  stainless bearing from the 
EFI version right out of the box, and you won't need to remove the motor 
for a long time after that.  Other than that, mine has been flawless - 
never a cough or deadstick in about 250 flights this year.  I have run 
17-12 / 16-13 / 16-14 / 17-10N   APC  props, and each has it's own 
different characteristics.  I prefer the 17-12 and 16-13, but I just 
started trying the 17-10N and like that too.  I am running a Bolly MF590 
muffler, so if you run a tuned pipe, you will get different results due 
to the higher rpms from the pipe.  This is all on 10% Cool Power. I ran 
a gallon of 15% Cool Power, and it was not a big enough difference to 
switch. 
    I bought a pipe and Perry pump to run an OS 160 in my 2nd plane, but 
decided that my 140 had been so reliable that I should not mess with 
having 2 different setups, and so I have another 140 on order. (in fact, 
I'm selling my 160 and perry pump and pipe if you are interested.)  I 
know that Bob Pastorello has had great results from his 160 setup - but 
I just want a common setup in both planes to simplify things. 

Chris

John Pavlick wrote:

>Guys,
> I'm looking for some insight into which motor I should use in a new ship
>(Focus). I like the O.S. 1.40RX because it's got a rear exhaust, but the
>1.60FX looks nice too. If anyone has any experience with either of these
>motors (props, fuel, pumps, things that wear out, etc.) I'd appreciate their
>input. Either one is a bit of an investment so I want to make sure I'm
>making the right choice. Also if anyone has used any of the new Hyde mounts
>(with the nose ring attached to the mount) I'd be interested in hearing
>about that too.
>
>John Pavlick
>http://www.idseng.com
>
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