VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 03-30-2018, 02:32 PM
tomkk's Avatar
tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 714
Default 35-08 Nose wheel assembly

We're assembling the nose wheel as indicated in 35-08, Fig. 1. The length of U-01210A-1 is such that when the nut is fully tightened there is barely any compression of the wave washers and there is no bearing drag at all when the wheel is turned.

I'm used to tightening the axle nut so that slight drag is produced from the bearings and then backed off slightly. U-01210A-1 is long enough to preclude getting any drag on bearings at all and virtually no compression on the wave washers. Can that be right?
__________________
Tom
Port Orange, Fl
RV-12 N121TK ELSA #120845
First flight 06/10/2015
Reply With Quote
  #2  
Old 03-30-2018, 02:53 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 7,433
Default

Quote:
Originally Posted by tomkk View Post
We're assembling the nose wheel as indicated in 35-08, Fig. 1. The length of U-01210A-1 is such that when the nut is fully tightened there is barely any compression of the wave washers and there is no bearing drag at all when the wheel is turned.

I'm used to tightening the axle nut so that slight drag is produced from the bearings and then backed off slightly. U-01210A-1 is long enough to preclude getting any drag on bearings at all and virtually no compression on the wave washers. Can that be right?
The type of plain bearing that is in the wheel is not meant to have any axial load, so the axle bolt shouldn't ever be tight enough to induce a change in friction that you can feel.

If everything is as intended, the wavy washers should be compressed just enough to induce some friction on the inner race of the bearing so that it doesn't rotate on the shaft.
__________________
Any opinions expressed in this message are my own and not necessarily those of my employer.

Scott McDaniels
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
Reply With Quote
  #3  
Old 03-30-2018, 03:53 PM
tomkk's Avatar
tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 714
Default

Thanks, Scott.
__________________
Tom
Port Orange, Fl
RV-12 N121TK ELSA #120845
First flight 06/10/2015
Reply With Quote
  #4  
Old 03-30-2018, 06:17 PM
Gandalf Gandalf is offline
 
Join Date: Apr 2008
Location: Medford, OR
Posts: 273
Default

So to be clear, older version of the RV12 that have a blank page at 35-08 may have different instructions on tightening the nose wheel axle bolt.

Jeff
Reply With Quote
  #5  
Old 03-31-2018, 05:44 AM
tomkk's Avatar
tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 714
Default

Quote:
Originally Posted by Gandalf View Post
So to be clear, older version of the RV12 that have a blank page at 35-08 may have different instructions on tightening the nose wheel axle bolt.

Jeff
It does, that's why we were confused by the instructions on the new 35-08. There aren't any tightening instructions there at all. Those of of us who had experience with the old one fell back to our prior experience with the old tightening instructions which simply won't work with the new configuration.
__________________
Tom
Port Orange, Fl
RV-12 N121TK ELSA #120845
First flight 06/10/2015
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 02:58 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.