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  #1  
Old 02-02-2019, 04:16 PM
tman512 tman512 is offline
 
Join Date: Oct 2011
Location: Surprise, AZ
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Default Nose wheel breakout force

My RV6A nose wheel will not maintain the 22 lbs. of breakout force. Will replacing the U-611 disk springs correct this problem? My plane has logged 925 hours.
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  #2  
Old 02-02-2019, 06:43 PM
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AlexPeterson AlexPeterson is offline
 
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Check post #10 of this thread.
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RV6A N66AP 1600+ hours
Maple Grove, MN
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  #3  
Old 02-02-2019, 09:59 PM
lr172 lr172 is offline
 
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I would disassemble, clean, remove any burrs from belleville washers, regrease and reassemble. Others have had good success by dressing the edges of the belleville's that contact each other.

Larry
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  #4  
Old 02-03-2019, 05:41 PM
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woodmanrog woodmanrog is offline
 
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Location: Florida
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You may have to tighten the bolt past the present cotter pin holes, torque to 23-25 lbs of breakout force and drill new holes for the cotter pin. For what it's worth, do not put any grease on the Bellvile washers. Lubes defeat their purpose. This is mentioned in the plans/instructions. I have found that a little overtight of specs works better.
Cheers
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  #5  
Old 02-03-2019, 06:15 PM
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Vlad Vlad is online now
 
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Quote:
Originally Posted by woodmanrog View Post

...
I have found that a little overtight of specs works better.
Cheers
I have found that a little undertight of specs works better on an ice runway. Hi Roger
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  #6  
Old 02-04-2019, 03:46 AM
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rzbill rzbill is offline
 
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Location: Asheville, NC
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I agree with Alex's post about putting flats on the Belleville washers.
Here is another aspect to look for. A descepancy in original manufacture of the pivot stop that bears on the pivot bearing.

http://www.vansairforce.com/communit...ght=Nose+wheel

I'll apologize up front for the pics disappearing sometime in the future.
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ME/AE '82
RV-7A: Flying since April 15, 2012. 800 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
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