Posted by MarkB_MI on June 14, 2021 at 02:49:47 from (174.230.18.126):
In Reply to: Aircraft fuel posted by Dylan Berhorst on June 13, 2021 at 04:26:42:
What do you hope to gain running avgas in your tractor? Unless you have very high compression, you don't need a high octane fuel.
When 100LL was first introduced, it was supposed to replace both 100/130 and 80/87. Pilots with old, low-compression engines (around 7 or 8 to 1) had a lot of problems with lead fouling of spark plugs on 100LL, which led to Supplemental Type Certificates allowing the use of unleaded mogas in aircraft. Contrary to popular belief, the mogas STCs were never about saving money but rather replacing a fuel that was no longer available (80/87).
A big plus for avgas is its low volatility. Avgas has a maximum Reid Vapor Pressure of 7 psi, so it has a very long shelf life. HOWEVER, summer grade fuel in the US is now limited to 7.8 psi, and in some areas to 7.0 psi, just like avgas. Ethanol blends are allowed an extra one psi. Winter grade fuel can be up to 9 psi RVP.
In many states, including Michigan, you can buy REC-90 fuel, which is supposedly ethanol-free. I've tried to find if there's an RVP spec for REC-90, and I've haven't found one. In fact, I haven't found ANY published spec for REC-90, which leads me to wonder if it's anything other than rebranded unleaded mogas. I assume it has to meet the local RVP requirements for mogas, but I don't know that for sure.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
... [Read Article]
Latest Ad:
1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
