Today's Message Index:
----------------------
0. 08:27 AM - [PLEASE READ] Why I Have A Fund Raiser... (Matt Dralle)
1. 05:45 AM - Re: Prop nut torque (Ernest Martinez)
2. 09:22 AM - Re: Real Pilot! (Bitterlich, Mark G CIV NAVAIR, WD)
3. 09:29 AM - Re: Real Pilot! (jblake207@comcast.net)
4. 01:47 PM - Re: Prop nut torque (Walter Lannon)
5. 02:50 PM - Re: Real Pilot! (Richard Hess)
6. 06:40 PM - Re: Prop nut torque (Vic)
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| Subject: | [PLEASE READ] Why I Have A Fund Raiser... |
Since the beginning, the Matronics List and Forum experience has been free from
advertising. I have been approached by fair number of vendors wanting to tap
into the large volume of activity across the various lists hosted here, but have
always flatly refused. Everywhere you go on the Internet these days, a user
is pummeled with flashing banners and videos and ads for crap that they don't
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endure their barrage of commercialism thrust into their face at an ever increasing
rate. Enough is enough, and the Lists at Matronics choose not to succumb
to that.
That being said, running a service of this size is not "free". It costs a lot
of money to maintain the hardware, pay for the electricity, air conditioning,
maintenance contracts, etc, etc. etc. I choose to hold a PBS-like fund raiser
each year during the month of November where I simply send out a short email
every other day asking the members to make a small contribution to support the
operation. That being said, that contribution is completely voluntary and non-compulsory.
Many members choose not to contribute and that's fine.
However, a very modest percentage of the members do choose to make a contribution
and it is that financial support that keeps the Lists running. And that's
it. To my way of thinking, it is a much more pleasant way of maintaining the
Lists and Forums. The other 11 months of the year, you don't see a single advertisement
or request for support. That's refreshing and that is a List and Forum
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Won't you please take a minute to make your Contribution today and support these
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http://www.matronics.com/contribution
Or, drop a personal check in the mail to:
Matt Dralle / Matronics
581 Jeannie Way
Livermore CA 94550
USA
Thank you for your support!
Matt Dralle
Email List Admin.
Message 1
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| Subject: | Re: Prop nut torque |
Walt,
The first place I looked was in the overhaul manual. I can see all the
other torque values but none for the main nut. I see one cryptic entry
which doesnt specify a torque value per se' but states:
"Torque propellor housing nut to such extent that before installation of
driving sleeve, rotation moment for each blade is 9.8 +- 2 N.M. during
change from low pitch to high pitch. Ensure that torque difference between
2 nuts is not more than 2 N.M."
I interpret this to mean, torque the nut to the point that the force to
manually change the pitch is no more than 9.8 NM. But what other 2 nuts are
they talking about?
On Thu, Nov 20, 2014 at 10:46 PM, Ernest Martinez <erniel29@gmail.com>
wrote:
> Thank you!
>
>
> On Thursday, November 20, 2014, Walter Lannon <wlannon@shaw.ca> wrote:
>
>> 50 to 60 KGM or 370 to 430 lb/ft. It is in the Tech. Specs Manual,
>> pg. 216. Of course it is also in the component overhaul manual which
>> gives a much more detailed view of the propellor and many other parts of
>> the aircraft. Doug has them.
>>
>> Walt
>>
>> *From:* Ernest Martinez
>> *Sent:* Thursday, November 20, 2014 5:58 PM
>> *To:* yak-list
>> *Subject:* Yak-List: Prop nut torque
>>
>> can someone give me a definitive answer for the torque value for the mai
n
>> prop nut for the Housai prop. I have gotten values ranging from 250 to 7
50
>> ft lbs. and can you provide the source, since I cannot find it in the
>> manual.
>>
>> *
>>
>> href="http://www.aeroelectric.com <http://www.aeroelectric.com>">www.a
eroelectric.com <http://www.aeroelectric.com>
>> href="http://www.buildersbooks.com <http://www.buildersbooks.com>">www
.buildersbooks.com <http://www.buildersbooks.com>
>> href="http://www.homebuilthelp.com <http://www.homebuilthelp.com>">www
.homebuilthelp.com <http://www.homebuilthelp.com>
>> href="http://www.mypilotstore.com <http://www.mypilotstore.com>">www.m
ypilotstore.com <http://www.mypilotstore.com>
>> href="http://www.mrrace.com <http://www.mrrace.com>">www.mrrace.com <h
ttp://www.mrrace.com>
>> href="http://www.matronics.com/contribution <http://www.matronics.com/
contribution>">http://www.matronics.com/chref= <http://www.matronics.com/
chref=>"http://www.matronics.com/Navigator?Yak-List <http://www.matronics
.com/Navigator?Yak-List>">http://www.matronics.com/Navigator?Yak-List <http
://www.matronics.com/Navigator?Yak-List>
>> href="http://forums.matronics.com <http://forums.matronics.com>">http:
//forums.matronics.com <http://forums.matronics.com>
>>
>> *
>>
>> *
>>
===========
om>
ildersbooks.com>
p.com>
.com>
com/contribution>
===========
onics.com/Navigator?Yak-List>
===========
===========
>>
>> *
>>
>>
Message 2
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Outside of the A-6, one of the most effective ground support aircraft I have ever
seen in action. Got a lot of respect for folks associated with them. They
work down in the weeds, and do so with tremendous effect.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Hess
Sent: Thursday, November 20, 2014 5:50 PM
Subject: Re: Yak-List: Real Pilot!
Yes, A-10 guys know all about CAS. Heck, we even lived in tents and ate MREs. Almost
Grunts in Blue !!!
Richard Hess
President
International Jets, Inc.
Cell 404-964-4885
-----Original Message-----
From: Bitterlich, Mark G CIV NAVAIR, WD, WD <mark.bitterlich@navy.mil>
Sent: Thu, Nov 20, 2014 5:33 pm
Subject: RE: Yak-List: Real Pilot!
<mark.bitterlich@navy.mil>
EXCUSE ME?
What about "Frag Patterns?" What would an Air Force Flight Doc know about
Close Air Support?
Not burning you up here Doc, but leave Close Air Support to the Marines, unless
you possibly are flying a Hog.
Just saying Viper Doc.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of Roger Kemp [f16viperdoc@me.com]
Sent: Thursday, November 20, 2014 2:14 PM
Subject: Re: Yak-List: Real Pilot!
Balls...need Em to root around in mud stirring tree limbs.
Now Blade, let's talk Frag patterns.
Doc
Sent from my iPad
On Nov 19, 2014, at 11:31 AM, jblake207@comcast.net<mailto:jblake207@comcast.net <mailto:jblake207@comcast.net?> >
wrote:
For the record, found out yesterday that Blitz is actually a real pilot... He
flew the H-19, the HH-43 and both the CH-3B&C. I'll bet there were a few more
aero-machines that he could add to the list. You Rock Blitz! JB
===========================ric www.aeroelec"http://www.buildersbooks.com" target="_blank">www.buildersbooks.com <http://www.aeroelectric.com>
Message 3
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"Hog" drivers can drink my whiskey anytime!=C2- Best at putting steal on
target in a JAAT!=C2- JB
----- Original Message -----
From: "Mark G CIV NAVAIR Bitterlich, WD" <mark.bitterlich@navy.mil>
Sent: Friday, November 21, 2014 11:21:54 AM
Subject: RE: Yak-List: Real Pilot!
itterlich@navy.mil>
Outside of the A-6, one of the most effective ground support aircraft I hav
e ever seen in action. =C2- Got a lot of respect for folks associated wit
h them. =C2-They work down in the weeds, and do so with tremendous effect
.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@mat
ronics.com] On Behalf Of Richard Hess
Sent: Thursday, November 20, 2014 5:50 PM
Subject: Re: Yak-List: Real Pilot!
Yes, A-10 guys know all about CAS. Heck, we even lived in tents and ate MRE
s. Almost Grunts in Blue !!!
Richard Hess
President
International Jets, Inc.
Cell 404-964-4885
-----Original Message-----
From: Bitterlich, Mark G CIV NAVAIR, WD, WD <mark.bitterlich@navy.mil>
Sent: Thu, Nov 20, 2014 5:33 pm
Subject: RE: Yak-List: Real Pilot!
<mark.bitterlich@navy.mil>
EXCUSE ME?
What about "Frag Patterns?" =C2- What would an Air Force Flight Doc know
about
Close Air Support?
Not burning you up here Doc, but leave Close Air Support to the Marines, un
less you possibly are flying a Hog.
Just saying Viper Doc.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.
com]
on behalf of Roger Kemp [f16viperdoc@me.com]
Sent: Thursday, November 20, 2014 2:14 PM
Subject: Re: Yak-List: Real Pilot!
Balls...need Em to root around in mud stirring tree limbs.
Now Blade, let's talk Frag patterns.
Doc
Sent from my iPad
On Nov 19, 2014, at 11:31 AM, jblake207@comcast.net<mailto:jblake207@comcas
t.net <mailto:jblake207@comcast.net?> >
wrote:
For the record, found out yesterday that Blitz is actually a real pilot...
He
flew the H-19, the HH-43 and both the CH-3B&C. =C2-I'll bet there were a
few more
aero-machines that he could add to the list. =C2-You Rock Blitz! =C2-JB
==ric www.aeroelec"http://www.buildersbooks.com" target="_blank">www.
buildersbooks.com <http://www.aeroelectric.com>
===========
=C2- =C2- =C2- =C2- =C2--Matt Dralle, List Admin.
===========
===========
MS -
===========
Message 4
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| Subject: | Re: Prop nut torque |
Ernie;
I probably gave you a bum steer. It is after all an
=9Coverhaul=9D manual and that is an installation value.
I know it is in my copy but only because I probably put it in when I
converted all those torque values to in/lb or ft lb. My apologies.
Can=99t confirm any of that as the manual is in the hangar and I
am home under the weather.
The other torque item you note is indeed the setting of the actual blade
torque. Under normal circumstances it is an overhaul function only
during hub assembly with the drive sleeve not installed. The drive
sleeve is a rotational part in the hub that connects the blades to each
other and to the pitch-change piston. The =9Cnut=9D they
refer to should be =9Cnut=99s=9D and may be better
described as blade bearing nuts =93 the big nuts in each end of
the hub. These are tightened until each blade turning torque
(rotational moment) is within limit and the actual nut torque is within
2NM of each other.
At this point the nuts are metal stamped to line up with an index mark
on the hub for future considerations, the prop is disassembled and
reassembled with all parts in preparation for balancing.
Walt
From: Ernest Martinez
Sent: Friday, November 21, 2014 5:45 AM
Subject: Re: Yak-List: Prop nut torque
Walt,
The first place I looked was in the overhaul manual. I can see all the
other torque values but none for the main nut. I see one cryptic entry
which doesnt specify a torque value per se' but states:
"Torque propellor housing nut to such extent that before installation of
driving sleeve, rotation moment for each blade is 9.8 +- 2 N.M. during
change from low pitch to high pitch. Ensure that torque difference
between 2 nuts is not more than 2 N.M."
I interpret this to mean, torque the nut to the point that the force to
manually change the pitch is no more than 9.8 NM. But what other 2 nuts
are they talking about?
On Thu, Nov 20, 2014 at 10:46 PM, Ernest Martinez <erniel29@gmail.com>
wrote:
Thank you!
On Thursday, November 20, 2014, Walter Lannon <wlannon@shaw.ca> wrote:
50 to 60 KGM or 370 to 430 lb/ft. It is in the Tech. Specs Manual,
pg. 216. Of course it is also in the component overhaul manual which
gives a much more detailed view of the propellor and many other parts of
the aircraft. Doug has them.
Walt
From: Ernest Martinez
Sent: Thursday, November 20, 2014 5:58 PM
To: yak-list
Subject: Yak-List: Prop nut torque
can someone give me a definitive answer for the torque value for the
main prop nut for the Housai prop. I have gotten values ranging from 250
to 750 ft lbs. and can you provide the source, since I cannot find it in
the manual.
href="http://www.aeroelectric.com">www.aeroelectric.com
href="http://www.buildersbooks.com">www.buildersbooks.com
href="http://www.homebuilthelp.com">www.homebuilthelp.com
href="http://www.mypilotstore.com">www.mypilotstore.com
href="http://www.mrrace.com">www.mrrace.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics
.com/Navigator?Yak-List
href="http://forums.matronics.com">http://forums.matronics.com
_blank">www.aeroelectric.com
.com" target="_blank">www.buildersbooks.com
="_blank">www.homebuilthelp.com
="_blank">www.mypilotstore.com
ank">www.mrrace.com
_blank">http://www.matronics.com/contribution
et="_blank">http://www.matronics.com/Navigator?Yak-List
tp://forums.matronics.com
Message 5
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"Thunder!"
Richard Hess
C 404-964-4885
> On Nov 21, 2014, at 12:26, jblake207@comcast.net wrote:
>
> "Hog" drivers can drink my whiskey anytime! Best at putting steal on targ
et in a JAAT! JB
>
> From: "Mark G CIV NAVAIR Bitterlich, WD" <mark.bitterlich@navy.mil>
> To: "Yak-List" <yak-list@matronics.com>
> Sent: Friday, November 21, 2014 11:21:54 AM
> Subject: RE: Yak-List: Real Pilot!
>
bitterlich@navy.mil>
>
> Outside of the A-6, one of the most effective ground support aircraft I ha
ve ever seen in action. Got a lot of respect for folks associated with the
m. They work down in the weeds, and do so with tremendous effect.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@ma
tronics.com] On Behalf Of Richard Hess
> Sent: Thursday, November 20, 2014 5:50 PM
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Real Pilot!
>
> Yes, A-10 guys know all about CAS. Heck, we even lived in tents and ate MR
Es. Almost Grunts in Blue !!!
>
>
> Richard Hess
> President
> International Jets, Inc.
> Cell 404-964-4885
>
>
> -----Original Message-----
> From: Bitterlich, Mark G CIV NAVAIR, WD, WD <mark.bitterlich@navy.mil>
> To: yak-list <yak-list@matronics.com>
> Sent: Thu, Nov 20, 2014 5:33 pm
> Subject: RE: Yak-List: Real Pilot!
>
>
> <mark.bitterlich@navy.mil>
>
> EXCUSE ME?
>
>
>
> What about "Frag Patterns?" What would an Air Force Flight Doc know abou
t
> Close Air Support?
>
>
>
> Not burning you up here Doc, but leave Close Air Support to the Marines, u
nless you possibly are flying a Hog.
>
>
>
> Just saying Viper Doc.
>
>
>
> Mark
>
>
>
>
>
>
>
>
>
> ________________________________
> From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics
.com]
> on behalf of Roger Kemp [f16viperdoc@me.com]
> Sent: Thursday, November 20, 2014 2:14 PM
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Real Pilot!
>
> Balls...need Em to root around in mud stirring tree limbs.
> Now Blade, let's talk Frag patterns.
> Doc
>
> Sent from my iPad
>
> On Nov 19, 2014, at 11:31 AM, jblake207@comcast.net<mailto:jblake207@comca
st.net <mailto:jblake207@comcast.net?> >
> wrote:
>
> For the record, found out yesterday that Blitz is actually a real pilot...
He
> flew the H-19, the HH-43 and both the CH-3B&C. I'll bet there were a few m
ore
> aero-machines that he could add to the list. You Rock Blitz! JB
>
> =========================
==ric www.aeroelec"http://www.buildersbooks.com" target="_blank">www.b
uildersbooks.com <http://www.aeroelectric.com>
>
>
>
>
> = &=========
>
>
>
>
>
>
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
Message 6
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| Subject: | Re: Prop nut torque |
It puzzles me how one can issue torque numbers for the blades when the nuts only
do one job, preload axial rollers. So Id be a bit worried to overload those
rollers heavily to achieve 10 Nm torque in a roller bearing that normally has
very low friction. What could be the effect if this torque was only half or
quart of the numbers, anybody an idea ? I only know the Russian hub.
Vic
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http://forums.matronics.com/viewtopic.php?p=434322#434322
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