Today's Message Index:
----------------------
1. 02:56 PM - Re: Re: rpm (nyterminat@aol.com)
2. 06:23 PM - Re: rpm (David X)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Dave
What grade fuel are you using? The MOGAS at our airport is only 87 octane, my understanding
is that premium unleaded is recommended. I am running the Mobile
One Synthetic which is not recommended for AVGAS. I was wondering whether 87 octane
would be OK.
Bob Spudis
N701ZX do not archive
-----Original Message-----
From: David X <dxj@comcast.net>
Sent: Mon, 27 Feb 2006 17:13:27 -0800
Subject: RotaxEngines-List: Re: rpm
--> RotaxEngines-List message posted by: "David X" <dxj@comcast.net>
It will burn either MOGAS (automobile unleaded gasoline) or AVGAS (low lead
aircraft fuel) but you have to change the oil every 25 to 30 hours and clean the
lead from the spark plugs about as often. Appearantly, AVGAS gives the rotax the
engine the equivilent of clogged arteries over time. :(
==
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> RotaxEngines-List message posted by: "David X" <dxj@comcast.net>
For the 912, 87 octane is the minimum required. If that's what you are flying,
then it's convenient for you at your airfield ... but I'd use 89 octane instead
just to avoid engine knock on hot days or risk losing the octane as the fuel
sits in the tanks for too long.
For the 912S, 91 octane is the minimum required. That's what I fly, and I usually
bring 20 gallons in 5 gallon cans in the back of my truck. It's a habit now.
I usually go to Sonoco because I can get 93 or 94 octane. AVGAS is $4.00 at
my field, MOGAS is $2.40 ... so I'm motivated to put up with a little hassle
to save $48 on two 15 gallon tank fulls ... and it's better for my engine too.
The down side to MOGAS is that it will begin to lose it's octane rating after about
3 weeks. It will also start to leave a sort of varnish behind if left for
about 6 weeks (unless you put in some fuel preservative). This is not a problem
with AVGAS.
If you fly about once a week (or more) and your flights are at least an hour long
... then MOGAS is a better way to go. If you fly once a month (or so) then
you're better off burning AVGAS and changing out the oil every 35 hours (or so)
and cleaning the plugs when you change the oil.
There is also a lead scavanger additive that you could try if you burn AVGAS. I
use it in my CH2000 (which has a Lycoming in it) and it really does work. I take
some with me in my Zodiac when I know I'll be flying where there is only AVGAS.
The plugs are cleaner and the deposits that are there on the plugs are easier
to clean off.
The additive is called TCP and you can get it at Aircraft Spruce: http://www.aircraftspruce.com/catalog/appages/alcortcp.php
Hope this helps.
--------
Zodiac 601 XL - CZAW Built - Rotax 912S
DO NOT ARCHIVE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=18606#18606
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|