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Date: Fri, 11 Apr 2008 09:15:43 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] New material for bearings
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Jim Brewer wrote:
> Lynn, 
> What do you think of this stuff for bearings in a rotary? Side plate surfaces?  
> http://machinedesign.com/ContentItem/72386/TheBondedOnBearing.aspx
>
> Jim Brewer
>
>   
Here's some real world tests:
http://bobhooversblog.blogspot.com/search?q=dry+film+lubricant

I hope to be applying a coat to my side housings tomorrow.  Just hoping 
the weather cooperates.  I spent last weekend getting my 'oven' 
working.  It consist of a wooden box that is doubling as a blast 
cabinet.  For the oven function, I remove the hoses, replace the top 
with an inuslated one (house fiberglass batting held with aluminum 
foil), and add a board that has four halogen bulbs supported by 
paperclips.  It's a Junk-Yard Wars contraption, but it only has to work 
once.

I've already coated my rotors in a thermal barrier.  Used a toaster oven 
for the baking.  I've removed the exhaust inserts from the rotor 
housings, and I'll coat them with thermal barrier before putting them 
back.  The oil chain sprockets and the distributor drive gear will get a 
DFL (dry-film lubricant) coating.  I'm still debating if I want to coat 
the rotor and main bearings.

The first test of whether it is all worthwhile will be to put a torque 
wrench on the engine without plugs or exhaust and see what it takes to 
spin it.  Energy not needed to turn the engine will be delivered to the 
prop, or lighten the load on the starter.