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  #1  
Old 04-02-2017, 10:45 PM
gossend gossend is offline
 
Join Date: Dec 2011
Location: Georgetown, Texas
Posts: 141
Question Nord-Lock washers

Anyone consider using Nord-Locks on the main landing gear attach bolts? You know, the bolts you check every year and find them slightly undertorqued - again? Guarantee the Nord-Locks will fix it!
Given the peak stresses seen at touchdown, I'd even consider their new X-series washers. They would handle the momentary bolt stretch on the front-most bolts. Check out the videos on the Nord-Lock site - They'll make a believer out of you!
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  #2  
Old 04-03-2017, 12:48 AM
hufise hufise is offline
 
Join Date: Jun 2010
Location: Uster, Zuerich, Switzerland
Posts: 29
Default Nordlock

Hi

Then washers are super against vibrating, I used it on the four engine mounts.

But Sensenich doesn't know the system. Because the bolt reduce part on the engine is a washer. A turning part !


Hello from Switzerland

Daniel RV -12 #120383 330 hrs
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  #3  
Old 04-03-2017, 07:12 AM
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snopercod snopercod is offline
 
Join Date: Aug 2016
Location: Asheville, NC
Posts: 764
Default Nord-Locks are great!

I use 1/4" Nord-Locks to hold my brake discs to the wheels, with the approval of Matco. I also use 7/16" Nord-Locks to hold my 4" prop extension to the crankshaft with my own approval
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  #4  
Old 04-03-2017, 10:56 AM
RFSchaller RFSchaller is online now
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,058
Default

Since installing the landing gear modifications in 2013 my landing gear bolts have not loosened at all, and I don't use Nord lock washers.
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  #5  
Old 04-03-2017, 10:19 PM
gossend gossend is offline
 
Join Date: Dec 2011
Location: Georgetown, Texas
Posts: 141
Default Nord-locks

Quote:
Originally Posted by RFSchaller View Post
Since installing the landing gear modifications in 2013 my landing gear bolts have not loosened at all, and I don't use Nord lock washers.
Good to hear that. About how many hours have you put on the airplane; and more importantly, roughly how many landings. And is that mostly on dirt, grass, or pavement?
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  #6  
Old 04-04-2017, 12:56 AM
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Gagarin737 Gagarin737 is offline
 
Join Date: Mar 2009
Location: Netherlands
Posts: 611
Default

No Nord-Locks. Torque still the same (just did my maintenance).
160 hours. 200 landings. 50% grass/pavement.

Quote:
Originally Posted by gossend View Post
Good to hear that. About how many hours have you put on the airplane; and more importantly, roughly how many landings. And is that mostly on dirt, grass, or pavement?
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  #7  
Old 04-05-2017, 11:46 AM
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rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
Posts: 185
Default UL Power

UL uses N-L washers throughout their engines and they work great. They are little pricey compared to a common lockwasher, but when you absolutely want to be sure that the bolt is locked in place and don't want to use red loctite, they're great.
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- RV-12 N975G, SN 120840, Build in progress...finally on the finishing kit, so, something like 90% done and 90% left to go.
- 1975 B58 Baron, N1975G (a bottomless money pit that makes building an RV look like lunch money, but it's a great airplane, hauls the family and my wife likes two engines...go figure)
- 1961 A33 Debonair, N433JC (R.I.P.)
- RV7A; didn't finish it and donated to kid's club
- Zenith CH601XL; flying somewhere in Louisiana https://youtu.be/wa_Y_A_rP_8
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  #8  
Old 04-05-2017, 11:50 AM
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rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
Posts: 185
Talking

Quote:
Originally Posted by hufise View Post
Hi

Then washers are super against vibrating, I used it on the four engine mounts.

But Sensenich doesn't know the system. Because the bolt reduce part on the engine is a washer. A turning part !


Hello from Switzerland

Daniel RV -12 #120383 330 hrs
While I applaud the use of N-L washers on your engine mount, I hope you also used cotter-pins. They're great lock washers, but pins are the bulletproof retainers I'd recommend for critical items such as your engine mount; use both and have the "belt and suspenders" approach. Nothing like a military grade nuclear option
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Ron Gawer

- RV-12 N975G, SN 120840, Build in progress...finally on the finishing kit, so, something like 90% done and 90% left to go.
- 1975 B58 Baron, N1975G (a bottomless money pit that makes building an RV look like lunch money, but it's a great airplane, hauls the family and my wife likes two engines...go figure)
- 1961 A33 Debonair, N433JC (R.I.P.)
- RV7A; didn't finish it and donated to kid's club
- Zenith CH601XL; flying somewhere in Louisiana https://youtu.be/wa_Y_A_rP_8
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