 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
gareywittich2000(at)yahoo
Guest
|
 Posted: Wed Jun 03, 2009 7:31 pm Post subject: Rod End Bearing Jam Nut - TORQUE |
 |
|
For you Experts:
Installed the Rod End Bearings in the Rudder and Elevators today. My local A&P said to tighten the Jam Nut by "Hand Tightening" the Jam Nut as far as it will go, then turn the nut between 1/4 and 1/2 turn more.
I "hand tightened" the Jam Nut (as the A&P said), but could not get it to tighten more than an additional 1/8 turn. Because the Jam Nut is recessed, it is impossible to get a wrench squarely on it = any further turning of the Nut stars to round the corners of the Nut. Is this 1/8 turn adequate for the Jam Nut tightness, if not how do you turn the Nut (since it is recessed) ??
What Torque Value is required for the Jam Nut, assuming a Torque Wrench can get into the recessed area - do not see how this can be done.
ANOTHER QUESTION -
Have a "click type" torque wrench that starts at 20 in-lbs. From previous posts, the FIRST 1/6 and the LAST 1/6 of the Wrench Scale are inaccurate. So how do you measure 'LOW VALUES" like for AN3 bolts that require 20 - 25 in/lbs plus Friction Torque of approx 5 in/lbs = 25 to 30 in/lbs TOTAL TORQUE ???
Appreciate your help,
Garey Wittich Santa Monica, CA
[quote][b]
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
|
|
| Back to top |
|
 |
gareywittich2000(at)yahoo
Guest
|
| Posted: Fri Jun 05, 2009 9:27 am Post subject: ROD END BEARING JAM NUT - Torque |
|
|
For you Experts:
Installed the Rod End Bearings in the Rudder and Elevator today. My local A & P said to tighten the Jam Nut by "Hand Tightening" the Jam Nut as far as it will go, then turn the nut between 1/4 and 1/2 turn more.
I "hand tightened" the Jam Nut (as the A & P said), but could not get it to tighten more than an additional 1/8 turn, Because the Jam Nut is recessed (in the Spar channel), it is impossible to get a wrench "squarely" on it = any further tightening of the Nut starts to round the corners of the Nut. Is this 1/8 turn adequate for the Jam Nut tightness, if NOT how do you turn the Nut (since it is recessed) ????
What Torque Value is required for the Jam Nut, assuming a Torque Wrench can get into the recessed area - do not see how this can be done.
ANOTHER QUESTION -
Have a "Click Type" torque wrench that starts at 20 in-lbs. From previous posts, the FIRST 1/6 and the LAST 1/6 of the Wrench's scale are inaccurate. So how do you measure "LOW VALUES" for an AN3 Nut that requires 20 - 25 in/lbs plus Friction Torque of approx 5 in/lbs = 25 to 30 on/lbs TOTAL torque ??
Appreciate your help,
Garey Santa Monica, CA
[quote][b]
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
|
|
| Back to top |
|
|
Bruce(at)glasair.org
Guest
|
| Posted: Fri Jun 05, 2009 9:53 am Post subject: ROD END BEARING JAM NUT - Torque |
|
|
Send your wrist out for calibration. (Sorry, I couldn’t help it.)
Bruce
www.Glasair.org
--
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
|
|
| Back to top |
|
|
Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
|
| Posted: Sat Jun 06, 2009 4:44 am Post subject: ROD END BEARING JAM NUT - Torque |
|
|
Yes. If that is sufficiently tight for your calibrated wrist and ability to hold wrench on nut, it isn't going anywhere.
Garey Wittich wrote: | Quote: |
. Is this 1/8 turn adequate for the Jam Nut tightness, if NOT how do you turn the Nut (since it is recessed) ????
W
|
[img]cid:part1.07050607.08020000(at)aviating.com[/img]
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
| Description: |
|
| Filesize: |
1.97 KB |
| Viewed: |
2513 Time(s) |
|
_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD |
|
| Back to top |
|
|
n223rv(at)wolflakeairport
Guest
|
| Posted: Sat Jun 06, 2009 5:24 am Post subject: ROD END BEARING JAM NUT - Torque |
|
|
Why would you not use the standard torque specified for a bolt/nut of the size being torqued?? Like if it is 10-24 then it would be 20-25 in lbs.... Etc
Sent from my iPhone
On Jun 6, 2009, at 8:40 AM, Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)> wrote:
[quote] Yes. If that is sufficiently tight for your calibrated wrist and ability to hold wrench on nut, it isn't going anywhere.
Garey Wittich wrote: | Quote: |
. Is this 1/8 turn adequate for the Jam Nut tightness, if NOT how do you turn the Nut (since it is recessed) ????
W
|
<mime-attachment.jpeg>
[b]
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
|
|
| Back to top |
|
|
Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
|
| Posted: Sat Jun 06, 2009 5:42 am Post subject: ROD END BEARING JAM NUT - Torque |
|
|
There are places that no torque wrench and extensions are going to
reach. Experience can get you real close. For example, 3/4 of a turn
from first contact on an oil filter will get you proper torque every time.
Michael Kraus wrote:
| Quote: | Why would you not use the standard torque specified for a bolt/nut of
the size being torqued?? Like if it is 10-24 then it would be 20-25
in lbs.... Etc
Sent from my iPhone
On Jun 6, 2009, at 8:40 AM, Kelly McMullen <kellym(at)aviating.com
<mailto:kellym(at)aviating.com>> wrote:
> Yes. If that is sufficiently tight for your calibrated wrist and
> ability to hold wrench on nut, it isn't going anywhere.
>
> Garey Wittich wrote:
>>
>> . Is this 1/8 turn adequate for the Jam Nut tightness, if NOT how
>> do you turn the Nut (since it is recessed) ????
>>
>> W
>>
> <mime-attachment.jpeg>
*
*
|
--
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD |
|
| Back to top |
|
|
khorton01(at)rogers.com
Guest
|
| Posted: Sat Jun 06, 2009 9:44 am Post subject: ROD END BEARING JAM NUT - Torque |
|
|
If you could get a torque wrench on it, you would want to use a torque
value for a shear nut. E.g., if it was 10-24, you would want 12-15 in-
lb, according to the torque table in AC43.13-1B.
Kevin Horton
On 6-Jun-09, at 09:25 , Michael Kraus wrote:
| Quote: | Why would you not use the standard torque specified for a bolt/nut
of the size being torqued?? Like if it is 10-24 then it would be
20-25 in lbs.... Etc
Sent from my iPhone
On Jun 6, 2009, at 8:40 AM, Kelly McMullen <kellym(at)aviating.com>
wrote:
> Yes. If that is sufficiently tight for your calibrated wrist and
> ability to hold wrench on nut, it isn't going anywhere.
>
> Garey Wittich wrote:
>>
>>
>> . Is this 1/8 turn adequate for the Jam Nut tightness, if NOT how
>> do you turn the Nut (since it is recessed) ????
>>
>> W
> <mime-attachment.jpeg>
|
--
Kevin Horton
Ottawa, Canada
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
