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  #1  
Old 04-01-2018, 01:07 PM
JDA_BTR JDA_BTR is offline
 
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Location: Baton Rouge, LA
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Default Beringer Bolts

I see in the Beringer sheet for the main wheels to use on each side 3 AN4-21A and 1 AN4-16.

The following close tolerance bolts are same size:
AN4-16 -> AN6604-21
AN4-21 -> AN6604-27

The drawing from Vans shows AN1304-29, which should be a little longer than both of these. AN6604 superseded AN1304 so they are the same thing.

So if you have installed this... Did your install have the Vans bolts too long or too short? Anyone get these close tolerance bolts?
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  #2  
Old 04-01-2018, 03:33 PM
bobhope2505 bobhope2505 is offline
 
Join Date: Oct 2014
Location: West Sacramento, CA
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I installed Beringer brakes/wheels and had to order 6 NAS6604-34 from Genuine Aircraft Hardware for the caliper housing. (-33 would have worked but wasn't in stock.) Here's the website: http://www.gen-aircraft-hardware.com/

Last edited by bobhope2505 : 04-01-2018 at 03:37 PM.
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  #3  
Old 04-01-2018, 04:13 PM
JDA_BTR JDA_BTR is offline
 
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What did you use for the fourth bolt on each side? How did you end up with a bolt so much longer than the callout in the Beringer plans?
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  #4  
Old 04-01-2018, 04:21 PM
MED MED is online now
 
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It may vary between an RV-14 and an RV-14A, but I needed longer bolts than Beringer specified for an RV-14A. I can't remember, but I think I used AN4-21s and -23s instead of -16s and -21s to have enough thread exposed. The Beringer instructions do not account for the wheel pant brackets.
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  #5  
Old 04-01-2018, 04:25 PM
JDA_BTR JDA_BTR is offline
 
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Ok gotcha. I'm a 14A I should be more specific huh? I'll go with what you did... didn't think about the pants.
Is it when you add U-00003 that the extra length comes in?
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Last edited by JDA_BTR : 04-01-2018 at 04:32 PM.
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  #6  
Old 04-01-2018, 07:01 PM
MED MED is online now
 
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Quote:
Originally Posted by JDA_BTR View Post
Is it when you add U-00003 that the extra length comes in?
Yes. You will also have to reverse the axles (L to R) and reposition the bleed screws if you want to mount the calipers on the aft side of the axles.
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  #7  
Old 04-01-2018, 07:09 PM
JDA_BTR JDA_BTR is offline
 
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Will do. Is there anything special about moving the bleed screws?
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  #8  
Old 04-01-2018, 08:03 PM
MED MED is online now
 
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Quote:
Originally Posted by JDA_BTR View Post
Will do. Is there anything special about moving the bleed screws?
No, they can be installed on either end of the caliper and the torque setting is engraved right on the caliper. Easy.
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  #9  
Old 04-02-2018, 02:58 AM
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Erimo Erimo is offline
 
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Quote:
Originally Posted by JDA_BTR View Post
I see in the Beringer sheet for the main wheels to use on each side 3 AN4-21A and 1 AN4-16.

The following close tolerance bolts are same size:
AN4-16 -> AN6604-21
AN4-21 -> AN6604-27

The drawing from Vans shows AN1304-29, which should be a little longer than both of these. AN6604 superseded AN1304 so they are the same thing.

So if you have installed this... Did your install have the Vans bolts too long or too short? Anyone get these close tolerance bolts?
I change them for close tolerance bolts :

- NAS6604-28
- NAS6604-34

ordered to Military Fasteners (but certainly you will find others suppliers).

With Van's bolts


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Last edited by Erimo : 04-03-2018 at 02:20 AM. Reason: Problem with picture display
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  #10  
Old 04-10-2018, 07:26 PM
JDA_BTR JDA_BTR is offline
 
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Tonight I went to assemble with the close tolerance bolts and there is interference where the red anodized portion of the main caliper comes against the silver colored hub. The bolts won’t pass through the holes fully. They will start on either side but not go through. Did anyone have this problem? Does unboltingbthe caliper permit an adjustment to line it up?
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