Author: "Al Grajek" <algrajek@...> Time: Thu Mar 18, 2004 9:14 am PST Link
I am getting ready to install my Hartzell C/S Prop on my O-360. I can not
find any literature regarding this> Other than putting the o- ring in, is
there any thing else to do other than just bolting it on? I see there are
two ways it can be mounted. Does it matter?
Thanks in advance
Al Grajek
RV8
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Author: "Greg T" <gtanner@...> Time: Thu Mar 18, 2004 10:00 am PST Link
I have the same question. I can install the prop in any position on my O-290
but is there a recommended clocking position? (engine at TDC install prop
vertical or horizontal or???)
Greg T
-----Original Message-----
From: Al Grajek [mailto:algrajek@...]
Sent: Thursday, March 18, 2004 8:31 AM
To: rv8-list@...; rv8list@yahoogroups.com;
vansairforce@yahoogroups.com
Subject: [VAF Mailing List] Prop Installation
I am getting ready to install my Hartzell C/S Prop on my O-360. I can not
find any literature regarding this> Other than putting the o- ring in, is
there any thing else to do other than just bolting it on? I see there are
two ways it can be mounted. Does it matter?
Thanks in advance
Al Grajek
RV8
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Author: Mike Thompson <grobdriver@...> Time: Thu Mar 18, 2004 10:55 am PST Link
--- Greg T <gtanner@...> wrote:
> I have the same question. I can install the prop in any position on
> my O-290
> but is there a recommended clocking position? (engine at TDC install
> prop
> vertical or horizontal or???)
I think props are historically installed so that facing the engine from
the front, the blades are at 10 o'clock and 4 o'clock.
But the historical reason is that puts the prop in a good position for
hand-starting the engine ("propping"). The 10 o'clock blade is grasped
and brought down counter-clockwise (again, facing the engine from the
hand-propper's perspective).
With a larger (higher compression) engine the question is moot -
probably cannot hand start an IO-360.
- Mike
=====
Michael E. Thompson (Grobdriver@...)
Austin, TX, USA
RV-6 N140RV, FLYING!
Ex-AX1 Sub Hunter, P-3 (B/B-TACMOD/C) Orion Aircrew,
PP-G,ASEL, Motorglider Driver and Unlimited Air Race Nut!
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Author: "Randy Lervold" <randy@...> Time: Thu Mar 18, 2004 11:37 am PST Link
> I am getting ready to install my Hartzell C/S Prop on my O-360. I can not
> find any literature regarding this> Other than putting the o- ring in, is
> there any thing else to do other than just bolting it on?
Yes, goop up the o-ring with Dow DC-4 silicone paste to allow it to slide on
smoothly without binding or rolling. You'll be sorry if that happens... oil
on the windscreen.
Randy Lervold
RV-8, 368 hrs, sold
RV-3B #11375, starting construction
Author: rjdickensheets@... Time: Thu Mar 18, 2004 4:58 pm PST Link
I used to think that too until I had a dead battery on a IO-520. Hand propped
myself out of staying in the boonies that night!!!
Ryan
[Non-text portions of this message have been removed]
Author: Mike Thompson <grobdriver@...> Time: Fri Mar 19, 2004 5:03 am PST Link
--- rjdickensheets@... wrote:
> I used to think that too until I had a dead battery on a IO-520. Hand
> propped
> myself out of staying in the boonies that night!!!
Wow.
What'cha call... incentive.
- Mike
=====
Michael E. Thompson (Grobdriver@...)
Austin, TX, USA
RV-6 N140RV, FLYING!
Ex-AX1 Sub Hunter, P-3 (B/B-TACMOD/C) Orion Aircrew,
PP-G,ASEL, Motorglider Driver and Unlimited Air Race Nut!
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Author: "mahlon_r" <mahlon_russell@...> Time: Fri Mar 19, 2004 5:28 am PST Link
The way that I would install a fixed pitch prop, on any TCM or
Lycoming, is to put any cylinder on top dead center of the compression
stroke and then install the prop at the 1:00 and 7:00 position. This
is for safe hand propping and is the accepted norm for installation.
There are some engine and prop combinations that will produce a
vibration that can be smoothed out be reorienting the prop. The
O-235-L2C and or C2C in a Grumman and a L2C C-152 is one of them. The
prop can be installed at 9:00 and 3:00 o'clock on these aircraft. I
would only deviate from the 1 and 7 position if vibrations were
encountered and then I would try rotating the pop one set of bolt
holes ccw, at a time, to see if I could smooth it out. Once you take
the prop away from the 1 and 7:00 o'clock position hand propping
becomes pretty dangerous and shouldn't be tried in my opinion.
When installing a constant speed two blade prop the lead blade doesn't
normally make a difference, which one it is and the prop position
relative to the crankshaft is controlled by the mounting dowels in the
crank flange and the recess's in the prop flange for them on a
Lycoming and the prop dowels on a TCM engine.
When installing a 3 blade prop, the wisdom is to put it a TDC of #1
and install with one blade down (like a Y) . That is so it will
automatically stop in this position on shut down. This is, so when it
rains, (if you installed it opposite to the "Y") the single blade
isn't pointed up and allowing water to collect in the spinner between
the lower two blades. Not to bad if it's warm out, the water will
scoot out on start up or preflight if you pull through before
starting. But if it freezes in there, it makes for a real rough engine
if you run it that way. Some three bladed prop manufactures, do
specify a number one blade and its position relative to the
crankshaft. That should be observed, if that is the case but I have
only seen that issue on a few rare six cylinder TCM engine installations.
Good Luck,
Mahlon
--- In vansairforce@yahoogroups.com, Mike Thompson <grobdriver@y...>
wrote:
> --- Greg T <gtanner@b...> wrote:
> > I have the same question. I can install the prop in any position on
> > my O-290
> > but is there a recommended clocking position? (engine at TDC install
> > prop
> > vertical or horizontal or???)
>
> I think props are historically installed so that facing the engine from
> the front, the blades are at 10 o'clock and 4 o'clock.
>
> But the historical reason is that puts the prop in a good position for
> hand-starting the engine ("propping"). The 10 o'clock blade is grasped
> and brought down counter-clockwise (again, facing the engine from the
> hand-propper's perspective).
>
> With a larger (higher compression) engine the question is moot -
> probably cannot hand start an IO-360.
>
> - Mike
> =====
> Michael E. Thompson (Grobdriver@y...)
> Austin, TX, USA
> RV-6 N140RV, FLYING!
> Ex-AX1 Sub Hunter, P-3 (B/B-TACMOD/C) Orion Aircrew,
> PP-G,ASEL, Motorglider Driver and Unlimited Air Race Nut!
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Mail - More reliable, more storage, less spam
> http://mail.yahoo.com
Author: "mikesrv6" <mikesrv6@...> Time: Fri Mar 19, 2004 9:37 am PST Link
I would call Hartzell and find out. My Sensenich fixed pitch came
with instructions and there was only one way they recommended
installing. There was a little mark that I lined up with the timing
marks.
--- In vansairforce@yahoogroups.com, "Al Grajek" <algrajek@m...>
wrote:
> I am getting ready to install my Hartzell C/S Prop on my O-360. I
can not
> find any literature regarding this> Other than putting the o- ring
in, is
> there any thing else to do other than just bolting it on? I see
there are
> two ways it can be mounted. Does it matter?
> Thanks in advance
> Al Grajek
> RV8
>
> _________________________________________________________________
> Get rid of annoying pop-up ads with the new MSN Toolbar – FREE!
> http://clk.atdmt.com/AVE/go/onm00200414ave/direct/01/