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  #11  
Old 05-04-2017, 01:09 PM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
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Quote:
Originally Posted by ChiefPilot View Post
But a NAS bolt by itself does nothing. As you know, it must fit with no slop or play thus the interference fit. Both parts of the equation are important.
Actually it does do something, NAS bolts are generally a few thousands larger dia than std AN hardware so it helps. Perfect solution... maybe not, but better than dropping another AN bolt in the hole and in many cases is all that is needed to tighen things up a bit.
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EXP Aircraft Services LLC
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Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
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  #12  
Old 05-04-2017, 02:22 PM
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AlexPeterson AlexPeterson is offline
 
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Location: Maple Grove, MN
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Required reading please.
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RV6A N66AP 1700+ hours
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  #13  
Old 05-15-2017, 02:46 PM
Starlifter Starlifter is offline
 
Join Date: Aug 2016
Location: Granbury, TX
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Default Thanks

Great info. Will be looking to begin the project soon. I'd sure like to fly a little!
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  #14  
Old 05-15-2017, 07:47 PM
texdog texdog is offline
 
Join Date: Jan 2013
Location: Fredericksburg, Tx.
Posts: 320
Default Bolt

I went from a .308 bolt to a .311 and it tightened up everything.
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  #15  
Old 05-16-2017, 12:51 AM
RViter RViter is offline
 
Join Date: Jun 2009
Location: Mesa, AZ
Posts: 242
Default Another 'creaking' nose gear ...

Quote:
Originally Posted by Starlifter View Post
When moving my RV-7A about the hangar with the tow bar, when side loads are encountered, the nose gear makes a lot of "creaking" noises which appear to be emanating from the gear leg-to-engine mount area. Normal or no? Checked the mount bolt during the condition inspection and there was no indication of looseness, etc.
Ditto on the creaking, with just over 16+ hrs Phase 1, I've heard it and was about to start researching this info. (Having previously read through the info, but forgotten specifics.) Good reminder ... and I ordered the NAS6605 bolt to try that first.

Also ordered the Matco axle components because I've been concerned about the torque situation on the bearing cones.

No shimmy or other perceived problems beyond the 'creaking' ... but time to act before it's worse.
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  #16  
Old 06-05-2017, 11:37 AM
EPG Aero EPG Aero is offline
 
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Location: Parker, CO
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starlifter,
Did you finally solve your noise issue?
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  #17  
Old 06-06-2017, 08:38 AM
Starlifter Starlifter is offline
 
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Location: Granbury, TX
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Due to recent surgery I've not been able to dive into it yet. Hope to get to it soon.
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  #18  
Old 06-07-2017, 09:12 AM
EPG Aero EPG Aero is offline
 
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Location: Parker, CO
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Reason I ask, I have the same issue. I've tried several attempts to locate the issue, but cannot for the life of me find it. I tried tightening the nose gear attach bolt to no avail. I thought it may be the nose wheel, so I had Anti-Splat put on new bearings and balance the wheel. That helped, but when turning the airplane either with the tow bar or while taxiing, I will get the noise. I'm glad I'm not the only one, so it seems it's perhaps common. I may next try a larger attach bolt next. I'm just hoping someone has solved it with a definite solution.
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  #19  
Old 06-07-2017, 12:32 PM
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Walt Walt is offline
 
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Location: Dallas/Ft Worth, TX
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Quote:
Originally Posted by EPG Aero View Post
Reason I ask, I have the same issue. I've tried several attempts to locate the issue, but cannot for the life of me find it. I tried tightening the nose gear attach bolt to no avail. I thought it may be the nose wheel, so I had Anti-Splat put on new bearings and balance the wheel. That helped, but when turning the airplane either with the tow bar or while taxiing, I will get the noise. I'm glad I'm not the only one, so it seems it's perhaps common. I may next try a larger attach bolt next. I'm just hoping someone has solved it with a definite solution.
See post #3
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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  #20  
Old 08-07-2017, 08:11 AM
EPG Aero EPG Aero is offline
 
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Location: Parker, CO
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Just removed nose gear over the weekend to track down the 'creaking'. The removed bolt was in decent shape, except for some scoring, which may have happened during removal. The washer however was distorted and completely destroyed. So, I bought some .311 interference bolts to replace the standard bolt, but later decided I didn't want to ream out the existing holes to fit the new bolt. Since I had an extra gear bolt in my stash, I just replaced the old one with the same sized hardware. I greased up the two places on the top of the strut where it 'touches' the engine mount/gear strut insert. I had my wife inside the plane to help me out, so we decided to place the bolt with the nut towards the firewall. Yes, this causes the bolt to extend in towards the cabin, but the plug we used was sufficient to cover the hole and the nut. After installing and tightening the nut, I did a pull/turn test on the gear by pulling it around the ramp and turning the gear to it's limits, both sides and NO CREAKING. The times I'd back the airplane into the hanger and turn the gear, I'd get the creaking all the time, so now it seems very smooth. I'm hoping this was the final time this ever needs to be addressed! Hope this info helps.

Last edited by EPG Aero : 08-07-2017 at 08:14 AM.
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