VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-10
Register FAQ Members List Calendar Today's Posts

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 05-23-2016, 01:57 PM
bret's Avatar
bret bret is offline
 
Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
Default

This is a very common mistake, I was thinking I will do the hole good to make it nice and round with a 5/16 reamer, for the AN 5 bolt, if you do this, it will have too much play, and in my case the wheel axle nut moved forward and back by 1/4 to 3/8 inch. in the plans, it says to use a .311 reamer, I did not see this, and others have missed this also.....now it is tight with no play. actually had to tap the bolt in, very snug!
__________________
7A Slider, EFII Angle 360, CS, SJ.
Reply With Quote
  #12  
Old 05-23-2016, 05:13 PM
Plummit's Avatar
Plummit Plummit is offline
 
Join Date: Apr 2010
Location: Covid Country-SoCal
Posts: 1,081
Default

So I've heard people refer to a step reamer for the holes. Someone contacted me with one for sale. Is there a part number or tool number I should look for?

~Marc
__________________
RV-10
N814RV
2020 Donation Made
Reply With Quote
  #13  
Old 05-24-2016, 06:32 AM
clutch22 clutch22 is offline
 
Join Date: Jul 2012
Location: Bartlesville, OK
Posts: 237
Default

Quote:
Originally Posted by Plummit View Post
So I've heard people refer to a step reamer for the holes. Someone contacted me with one for sale. Is there a part number or tool number I should look for?

~Marc
I can verify when I get home, but I believe it is the (PPRL-.3261) Long Piloted Reamer M42 Cobalt.3261

That reamer will give you a .0012" interference fit.
__________________
Andrew Austin

RV-10
-Flying!
Reply With Quote
  #14  
Old 05-24-2016, 08:55 AM
Richard@Langair Richard@Langair is offline
 
Join Date: Mar 2010
Location: Scappoose
Posts: 119
Default

A reamer that is sized at 0.3261 will not fit a close tolerance bolt. That will fit an oversized bolt. The close tolerance bolt should be 0.312,
Reply With Quote
  #15  
Old 05-24-2016, 07:03 PM
clutch22 clutch22 is offline
 
Join Date: Jul 2012
Location: Bartlesville, OK
Posts: 237
Default

Quote:
Originally Posted by Richard@Langair View Post
A reamer that is sized at 0.3261 will not fit a close tolerance bolt. That will fit an oversized bolt. The close tolerance bolt should be 0.312,

Oh good catch. I had it in my head that the holes were out of tolerance already (i.e. drilled with 5/16").

Marc, if you're still within the limits of the nominal size bolt, then I guess my 1/64" oversize reamer will be of no use to you.
__________________
Andrew Austin

RV-10
-Flying!
Reply With Quote
  #16  
Old 05-24-2016, 07:21 PM
Plummit's Avatar
Plummit Plummit is offline
 
Join Date: Apr 2010
Location: Covid Country-SoCal
Posts: 1,081
Default

Quote:
Originally Posted by clutch22 View Post
Oh good catch. I had it in my head that the holes were out of tolerance already (i.e. drilled with 5/16").

Marc, if you're still within the limits of the nominal size bolt, then I guess my 1/64" oversize reamer will be of no use to you.
Gosh I just don't know. The bolt suggested was a NAS6605-33X. That's an oversized, close tolerance bolt. The X represents a bolt that is .0156 oversize. A close tolerance bolt is max .3112.

I don't know if the builder of my plane drilled the hole with a 5/16 bit as many people seem to do, but the landing gear do move around (back and forth).

What bolts did you use Andrew?

thanks

~Marc
__________________
RV-10
N814RV
2020 Donation Made
Reply With Quote
  #17  
Old 05-24-2016, 07:56 PM
clutch22 clutch22 is offline
 
Join Date: Jul 2012
Location: Bartlesville, OK
Posts: 237
Default

I used a "(PPRL-.3261) Long Piloted Reamer M42 Cobalt.3261" with a NAS6605-33X bolt.

You may want to start by pulling one of your bolts out to see what condition the hole is in. Is this plane already flying, or is it still being built?

If you have the slop in your gear, you're going to need at least the 1/64" o/s. If it's really bad, you may even need the -Y 1/32" o/s.
__________________
Andrew Austin

RV-10
-Flying!
Reply With Quote
  #18  
Old 05-25-2016, 01:10 PM
Plummit's Avatar
Plummit Plummit is offline
 
Join Date: Apr 2010
Location: Covid Country-SoCal
Posts: 1,081
Default

OK, here's what I found out:

The NAS6605-33X is the oversize, close-tolerance bolt to replace the stock AN5-24A. This is the first oversize bolt, and the grip is almost identical to the AM5-24A.
If you drilled the gear with a 5/16 drill bit you probably need this size bolt.
http://www.gen-aircraft-hardware.com...X&folder=basic

The reamer to use for this bolt is either a PPR3261 or a PPRL(Long)3261. The short reamer is about 3½" long. I don't know how long the "L" version is but I will post it soon.
http://www.gen-aircraft-hardware.com...1&folder=basic

These are "Piloted" reamers, which means the end it turned down so when you put it through the tube, it serves as a guide to help ream the hole straight.

The hole you end up with will be slightly smaller than the bolt, so you will have an interference fit. How much smaller depends on the bolt: There are min and max dimensions that the bolt must adhere to.

You may need a rivet gun, mallet, or B-F hammer(just kidding) to install these bolts. They have nominal threads on the end so the same lock nut can be used. You may need a different washer on the grip area.

There should be no movement in the joint if done correctly.

~Marc
__________________
RV-10
N814RV
2020 Donation Made

Last edited by Plummit : 05-25-2016 at 01:29 PM.
Reply With Quote
  #19  
Old 05-25-2016, 03:21 PM
clutch22 clutch22 is offline
 
Join Date: Jul 2012
Location: Bartlesville, OK
Posts: 237
Default

Deleted my post.......
__________________
Andrew Austin

RV-10
-Flying!

Last edited by clutch22 : 05-25-2016 at 03:47 PM. Reason: Deleted my dyslexic nonsense paragraph about long reamer. I just looked, I have the short one. Short reamer is perfect!
Reply With Quote
  #20  
Old 05-27-2016, 06:09 PM
Plummit's Avatar
Plummit Plummit is offline
 
Join Date: Apr 2010
Location: Covid Country-SoCal
Posts: 1,081
Default

Today I received a "loaner" reamer (Thanks Andrew!). It's marked .3261. When I measured the grip on the bolts I bought from Genuine Aircraft Hardware, they measured .326 - Using my El-Cheapo digital caliper from Harbor Fright. Looks like there might be .0001 space to play with..... I'll post a follow up next week.

regards

~Marc
__________________
RV-10
N814RV
2020 Donation Made
Reply With Quote
Reply



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 01:26 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.