flyrotary@lancaironline.net Mailing List Archive

Hi Charlie,

It makes sense that this would be the case. Assuming they are using non-syntechic 2 cycle oil the oil carries more BTU than the highly refined gasoline. As you know higher Octane gasoline does not produce more power - it’s the fact that higher octane delays the onset of detonation which permits higher compression which results in more power. Higher octane gasoline has fewer BTU than lower octane - all else being the same.

A high octane fuel, such as liquefied petroleum gas (LPG), has a lower energy content than lower octane gasoline, resulting in an overall lower power output at the regular compression ratio of an engine run at on gasoline. However, with an engine tuned to the use of LPG (i.e. via higher compression ratios, such as 12:1 instead of 8:1), this lower power output can be overcome. This is because higher-octane fuels allow for a higher compression ratio

From: Charlie England <ceengland@bellsouth.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thursday, August 18, 2011 8:17 
PM
Subject: [FlyRotary] Fwd: 
oil premix data; info request

While searching for an 
oil filter remote adapter, I came across some interesting reading about the 
Renesis & oil premix that I don't recall seeing discussed in the past. It's 
near the bottom of the article.

http://www.racingbeat.com/mazda/performance/rotary-tech-tips/oil-filters-mop.html

BTW, 
anyone know of an adapter block for remote-ing the oil filter on a Renesis? None 
of the ones I've found list the 
Renesis.

Charlie