Today's Message Index:
----------------------
1. 03:57 PM - =?us-ascii?Q?Don't_know_where_to_turn!? (Les Goldner)
2. 04:08 PM - Re: Don't know where to turn! (Mike Parkin)
3. 04:18 PM - Re: Don't know where to turn! (Gilles Thesee)
4. 04:44 PM - Re: Don't know where to turn! (nyterminat@aol.com)
Message 1
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| Subject: | =?us-ascii?Q?Don't_know_where_to_turn!? |
I need to turn the shaft of a new 912 ULS engine to put some oil in the
cylinders (it has been sitting in its original box for over 2-years) and
can't figure out which way to turn it. Sounds like a really stupid question
that could be easily answered by reading the Rotax manuals. but:
The 912 Operators Manual says "Propeller shouldn't be turned reverse the
normal direction of engine rotation" and goes on to say (Page 8-2) that
"Direction of rotation of propeller shaft is counter-clockwise looking at
p.t.o. side of engine." Sounds easy enough until you also read page 19 in
the 912ULS Installation Manual, which contradicts this by saying "crank the
engine by hand on attachment screws of flywheel two complete turns
anticlockwise (viewed from Magneto side)."
Since you can't turn the shaft both anticlockwise from the p.t.o. side while
turning it counterclockwise from the mag side I don't know which way to turn
the shaft. Can someone clarify this by telling me, looking from the front of
the engine (from p.t.o. side toward mag side), which way the engine is
supposed to turn?
Thanks for the help,
Les
PS: I expect to begin the 912 installation in about 3-months in a Zenith
CH701.
Message 2
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| Subject: | Re: Don't know where to turn! |
The Rotax rotates anticlockwise viewing from the front. The prop end!!
regards,
MP
----- Original Message -----
From: Les Goldner
To: rotaxengines-list@matronics.com
Sent: Friday, March 16, 2007 10:57 PM
Subject: RotaxEngines-List: Don't know where to turn!
I need to turn the shaft of a new 912 ULS engine to put some oil in
the cylinders (it has been sitting in its original box for over 2-years)
and can't figure out which way to turn it. Sounds like a really stupid
question that could be easily answered by reading the Rotax manuals.
but:
The 912 Operators Manual says "Propeller shouldn't be turned reverse
the normal direction of engine rotation" and goes on to say (Page 8-2)
that "Direction of rotation of propeller shaft is counter-clockwise
looking at p.t.o. side of engine." Sounds easy enough until you also
read page 19 in the 912ULS Installation Manual, which contradicts this
by saying "crank the engine by hand on attachment screws of flywheel two
complete turns anticlockwise (viewed from Magneto side)."
Since you can't turn the shaft both anticlockwise from the p.t.o. side
while turning it counterclockwise from the mag side I don't know which
way to turn the shaft. Can someone clarify this by telling me, looking
from the front of the engine (from p.t.o. side toward mag side), which
way the engine is supposed to turn?
Thanks for the help,
Les
PS: I expect to begin the 912 installation in about 3-months in a
Zenith CH701.
-------------------------------------------------------------------------
-----
15/03/2007 11:27
Message 3
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| Subject: | Re: Don't know where to turn! |
Les Goldner a crit :
>
> Sounds like a really stupid question that could be easily answered by
> reading the Rotax manuals but:
>
> The 912 Operators Manual says Propeller shouldnt be turned reverse
> the normal direction of engine rotation and goes on to say (Page 8-2)
> that _Direction of rotation of propeller shaft is counter-clockwise
> looking at p.t.o. side of engine_. Sounds easy enough until you also
> read page 19 in the 912ULS Installation Manual, which contradicts this
> by saying _crank the engine by hand on attachment screws of flywheel
> two complete turns anticlockwise (viewed from Magneto side)_.
>
> Since you cant turn the shaft both anticlockwise from the p.t.o. side
> while turning it counterclockwise from the mag side I dont know which
> way to turn the shaft. Can someone clarify this by telling me, looking
> from the front of the engine (from p.t.o. side toward mag side), which
> way the engine is supposed to turn?
>
Les,
There is nothing wrong with the manuals. The Rotax engine has a spur
reduction gear : http://contrails.free.fr/engine_rotax_reduct_en.php
So whereas the props turns in one direction, the CRANKSHAFT turns the
other way.
At the front you turn the prop, and at the rear what you turn is the
flywheel attached to the crankshaft.
Do as the manuals say, and everything will be OK.
Best regards,
Gilles
http://contrails.free.fr
Message 4
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| Subject: | Re: Don't know where to turn! |
counterclockwise looking at the PTO shaft
Bob Spudis
-----Original Message-----
From: lgold@quantum-associates.com
Sent: Fri, 16 Mar 2007 6:57 PM
Subject: RotaxEngines-List: Don't know where to turn!
I need to turn the shaft of a new 912 ULS engine to put some oil in the cyli
nders (it has been sitting in its original box for over 2-years) and can't f
igure out which way to turn it. Sounds like a really stupid question that co
uld be easily answered by reading the Rotax manuals but:
The 912 Operators Manual says =9CPropeller shouldn=99t be turned
reverse the normal direction of engine rotation=9D and goes on to say
(Page 8-2) that =9CDirection of rotation of propeller shaft is counte
r-clockwise looking at p.t.o. side of engine.=9D Sounds easy enough un
til you also read page 19 in the 912ULS Installation Manual, which contradic
ts this by saying =9Ccrank the engine by hand on attachment screws of
flywheel two complete turns anticlockwise (viewed from Magneto side).
=9D
Since you can=99t turn the shaft both anticlockwise from the p.t.o. si
de while turning it counterclockwise from the mag side I don=99t know
which way to turn the shaft. Can someone clarify this by telling me, looking
from the front of the engine (from p.t.o. side toward mag side), which way
the engine is supposed to turn?
Thanks for the help,
Les
PS: I expect to begin the 912 installation in about 3-months in a Zenith C
H701.
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