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  #1  
Old 09-02-2021, 05:45 AM
9Abuilder 9Abuilder is offline
 
Join Date: Nov 2009
Location: Sierra Vista, AZ.
Posts: 30
Default Brake issue

Lately, Iíve heard a clicking sound coming from my left brake, when taxiing out to the runway. If I apply slight pressure to that brake, the clicking sound goes away. Once I let up, the clicking sound comes back. It only happens above 10 MPH. The aircraft is a 9A with an O-320 engine and constant speed prop. Original brakes that came from Vans. Approximately 80 hours on them so far. Any ideas what causes this issue and what is the solution?
Thank you, in advance, for your help.
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  #2  
Old 09-02-2021, 07:20 AM
WingsOnWheels WingsOnWheels is offline
 
Join Date: Mar 2009
Location: Plano, TX
Posts: 2,231
Default

Is the bearing preload too low and it is the wheel rather than the brake? Then when you apply the brake it adds enough load to keep the wheel from moving. Many years ago I had a car with a loose (insufficient preload) front wheel bearing. It would click as well.
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RV-6A #20603
Complete 5/10/19
PP SEL / A&P
I donate every year on my B-Day (in Dec), but donated early in Sep'19.
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  #3  
Old 09-02-2021, 07:30 AM
DGlaeser DGlaeser is offline
 
Join Date: May 2005
Location: Rochester Hills, MI
Posts: 909
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When the brakes are off the calipers sometimes rattle. The inside caliper is floating on the alignment pins and if a bit loose can make that rattle sound. When you apply the brakes it is no longer loose and the noise stops.
In one way it is a good sign that the caliper is not frozen or jammed 😎
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Dennis Glaeser CFII
Rochester Hills, MI
RV-7A - Eggenfellner H6, GRT Sport ES, EIS4000, 300XL, SL30, TT Gemini, PMA6000, AK950L, GT320,
uAvionixEcho ADSB in/out with GRT Safe Fly GPS
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  #4  
Old 09-02-2021, 03:05 PM
9Abuilder 9Abuilder is offline
 
Join Date: Nov 2009
Location: Sierra Vista, AZ.
Posts: 30
Default

Quote:
Originally Posted by DGlaeser View Post
When the brakes are off the calipers sometimes rattle. The inside caliper is floating on the alignment pins and if a bit loose can make that rattle sound. When you apply the brakes it is no longer loose and the noise stops.
In one way it is a good sign that the caliper is not frozen or jammed 😎
Thank you for your reply.
Is there a way to tighten the caliper or should I leave it alone?
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  #5  
Old 09-02-2021, 09:32 PM
DGlaeser DGlaeser is offline
 
Join Date: May 2005
Location: Rochester Hills, MI
Posts: 909
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No way to tighten the calipers - and you wouldnít really want to anyway because that would likely cause them to bind up.
You can lightly ride the brakes to stop the noise but that increases wear and heat
Personally I donít mind the noise because it means the brakes are loose enough to operate correctly.
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Dennis Glaeser CFII
Rochester Hills, MI
RV-7A - Eggenfellner H6, GRT Sport ES, EIS4000, 300XL, SL30, TT Gemini, PMA6000, AK950L, GT320,
uAvionixEcho ADSB in/out with GRT Safe Fly GPS
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  #6  
Old 09-03-2021, 04:16 AM
PCHunt PCHunt is offline
 
Join Date: Feb 2007
Location: San Diego, CA
Posts: 1,807
Default

+1 for what Dennis said. Normal.

Having said that, it wouldn't hurt to inspect the brakes to make sure everything is OK.
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RV-6, RV-6A, T-6G
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  #7  
Old 09-03-2021, 06:30 PM
9Abuilder 9Abuilder is offline
 
Join Date: Nov 2009
Location: Sierra Vista, AZ.
Posts: 30
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Quote:
Originally Posted by PCHunt View Post
+1 for what Dennis said. Normal.

Having said that, it wouldn't hurt to inspect the brakes to make sure everything is OK.
Dennis and Pete,
Thank you for your help. If you ever get to Sierra Vista, Az. please let me know and I will treat you to lunch.
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  #8  
Old 09-06-2021, 06:15 AM
jhk770 jhk770 is offline
 
Join Date: Aug 2015
Location: Morristown, NJ
Posts: 38
Default Brake clicking

Iím sure you checked this, but check the hinge pin for the gear leg fairing. Sometimes on my 7A the pin slides out a bit and rubs on the tire/rotor.
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