From: Chad Robinson <crobinson@medialantern.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sat, September 24, 2011 5:44:55 PM
Subject: [FlyRotary] Re: Eccentric Shaft Oil Jets
On 9/24/2011 6:19 PM, Thomas Mann wrote:
> So can the metering pump be modified to pull 2-Cycle oil from a reservoir rather than tapping into the normal oil source?
I see racers doing this on the rx7club and nopistons forums, but they have a good reason (usually they want to run synthetic, which doesn't burn that cleanly.
In an aircraft, where's the benefit? Run out of OMP oil and you kill your apex seals (and maybe your housings if the apex seals break and drag around in there...) Run out of crankcase oil and you could seize the E-shaft. Both are bad, so you're going to have to pay attention to your oil quantity, and dino oil works fine. So... if you don't want to run premix, why not just leave the stock setup the way it is? At least that way you aren't introducing a new failure mode to the mix...
Am I missing something?
Synthetic is supposed to be a better lube, and is supposed to be quite a bit better at lubing the gearbox than regular motor oil. So if you buy that, now you're down to deciding whether to remember to do premix at every gas fillup, or remember to add oil to the premix reservoir as needed.