Today's Message Index:
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1. 05:56 AM - Re: RotaxEngines-List Digest: 6 Msgs - 07/19/07 (Hugh McKay III)
2. 04:20 PM - Re: 912 starting problems (jetboy)
Message 1
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| Subject: | RE: RotaxEngines-List Digest: 6 Msgs - 07/19/07 |
Don:
I would first look carefully on the gearbox itself to see if you can find an
identifying number. If so, right that number down. Then get the engine S/N
off the engine and call Lockwood Aviation Tech Service (1-800-527-6829)
between 9:00 am and 10:00 am, or between 2:00 pm and 3:00 pm and ask to
speak to Dean Vogel or some one else in tech service. They should be able to
help you.
Hugh
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of
RotaxEngines-List Digest Server
Sent: Friday, July 20, 2007 2:57 AM
Subject: RotaxEngines-List Digest: 6 Msgs - 07/19/07
*
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Total Messages Posted Thu 07/19/07: 6
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Today's Message Index:
----------------------
1. 01:33 PM - ratio Ident>? (Don G)
2. 02:23 PM - Re: ratio Ident>? (Hugh McKay III)
3. 03:06 PM - Re: ratio Ident>? (Don G)
4. 06:14 PM - Re: ratio Ident>? (Roger Lee)
5. 07:17 PM - Re: Re: ratio Ident>? (Hugh McKay III)
6. 07:45 PM - Re: ratio Ident>? (Don G)
________________________________ Message 1
_____________________________________
Time: 01:33:29 PM PST US
Subject: RotaxEngines-List: ratio Ident>?
From: "Don G" <donghe@one-eleven.net>
gents,
How can I identify the ratio of my 912 UL?....and numbers that give a clue
anywhere?
Thx
--------
Don G.
Central Illinois
Kitfox IV Speedster
Luscombe 8A
http://www.geocities.com/dagger369th/my_firefly.htm
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124828#124828
________________________________ Message 2
_____________________________________
Time: 02:23:08 PM PST US
From: "Hugh McKay III" <hgmckay@bellsouth.net>
Subject: RE: RotaxEngines-List: ratio Ident>?
Don:
If you have a 912 UL, A, or F, the compression ratio is 9.0:1. On a 912 ULS,
or S it is 10.5:1. This is stated in the Rotax Engine Operators Manual. Call
your Rotax Dealer and give them the S/N of your engine which is located on
top of the right side of the engine (when facing the propeller), near the
magneto end to confirm it.
Hugh McKay
912 UL
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Don G
Sent: Thursday, July 19, 2007 4:33 PM
Subject: RotaxEngines-List: ratio Ident>?
gents,
How can I identify the ratio of my 912 UL?....and numbers that give a clue
anywhere?
Thx
--------
Don G.
Central Illinois
Kitfox IV Speedster
Luscombe 8A
http://www.geocities.com/dagger369th/my_firefly.htm
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124828#124828
________________________________ Message 3
_____________________________________
Time: 03:06:48 PM PST US
Subject: RotaxEngines-List: Re: ratio Ident>?
From: "Don G" <donghe@one-eleven.net>
Hugh,
Oops...I shoulda been more specific..The gearbox ratio Is what I am looking
for!
--------
Don G.
Central Illinois
Kitfox IV Speedster
Luscombe 8A
http://www.geocities.com/dagger369th/my_firefly.htm
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124851#124851
________________________________ Message 4
_____________________________________
Time: 06:14:56 PM PST US
Subject: RotaxEngines-List: Re: ratio Ident>?
From: "Roger Lee" <ssadiver1@yahoo.com>
Hi Don,
If it's the 912uls, 100 hp then the gear box ratio is most likely 2.43:1
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124874#124874
________________________________ Message 5
_____________________________________
Time: 07:17:16 PM PST US
From: "Hugh McKay III" <hgmckay@bellsouth.net>
Subject: RE: RotaxEngines-List: Re: ratio Ident>?
Don:
The G.B. ration for the 912 UL, A, and F is normally 2.27:1. However, there
is an optional ratio that can be ordered of 2.43:1.
Hugh McKay
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Roger Lee
Sent: Thursday, July 19, 2007 9:14 PM
Subject: RotaxEngines-List: Re: ratio Ident>?
Hi Don,
If it's the 912uls, 100 hp then the gear box ratio is most likely 2.43:1
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124874#124874
________________________________ Message 6
_____________________________________
Time: 07:45:26 PM PST US
Subject: RotaxEngines-List: Re: ratio Ident>?
From: "Don G" <donghe@one-eleven.net>
Is there any way to identify which externally>? do the stamp em or anything?
Surely I wont have to pull a rocker cover and turn the prop counting the
turns
and try to figger it out that way!........will I??
--------
Don G.
Central Illinois
Kitfox IV Speedster
Luscombe 8A
http://www.geocities.com/dagger369th/my_firefly.htm
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=124888#124888
Message 2
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| Subject: | Re: 912 starting problems |
A friend has an Avid with the 80 hp 912 and that has suffered 4 causes and cures
for the starting troubles.
1/ one or other carbs fall off during start. Cured by attaching carbs to bracket
also replacing soft engine mounts. there are 4 SB relating to mounting the
carbs.
2/ would misfire and stop when cranking. Cured by changing ignition switches to
toggle type so that both carb float bowls could be primed by cranking engine
a few seconds before attempting to start.
3/ would fire during cranking but not pick up revs. Started and ran perfectly
when propellor removed! Preload was at lower limit. Cured by overhaul and change
of the 15 deg dog clutch with the newer 30 deg one in gearbox.
4/ would throw out starter engagement during cranking. Cured by overhaul of sprag
clutch on starter motor. there uis a SB for the 912S for this problem. We
diagnosed it on the 912UL by carrying out the tests as for the 912S, and the starter
current was 10 amps lower than that limit.
You probably dont have the first problem, but any combination of the others could
occur. total time is less than 160 hrs.
Ralph
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=125027#125027
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