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  #1  
Old 02-04-2020, 08:44 PM
bob888 bob888 is offline
 
Join Date: Jul 2012
Location: Fresno, CA
Posts: 289
Default Brakes dragging

I recently relined the brakes. I bled the system and had the caliper pistons pushed all the way in. All seemed OK and actually braking well BUT it seems harder to push back into the hangar and when I jack it up and turn the wheel the brake is definitely dragging, on both mains. Suggestions?
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  #2  
Old 02-04-2020, 08:48 PM
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Carl Froehlich Carl Froehlich is online now
 
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Location: Dogwood Airpark (VA42)
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Had this happen - cause was a rolled brake caliper O ring. Replace it and problem fixed.

Carl
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  #3  
Old 02-04-2020, 10:51 PM
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Quote:
Originally Posted by Carl Froehlich View Post
Had this happen - cause was a rolled brake caliper O ring. Replace it and problem fixed.

Carl
On both mains?

-Marc
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  #4  
Old 02-05-2020, 08:36 AM
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db1yg db1yg is offline
 
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Posts: 631
Default Dragging Brakes

Had this happen while in phase I. I found that with my heels on the floor and feet resting on the rudder pedals, while on the taxiway, the ball of my foot was applying a small amount of pressure to the brake pedals, which caused the brakes to drag. Assuming the RV10 brake/rudder set up is the same as the side by side RVs (I have not built an RV10), I did two things, one was to install return springs to the top of the masters to hold them in the released position until pressure was applied, and two was to add rudder tube extensions which keep my feet off the brake pedals. I made the extensions myself but you can now buy them pre made here from a VAF member. The rudder tube extension was most likely the majority of the solution.

Hope this helps!

Cheers,

db
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  #5  
Old 02-05-2020, 09:39 AM
ReidVaitor ReidVaitor is offline
 
Join Date: Jun 2006
Location: SoCal
Posts: 179
Default Dragging

If you have a parking brake.. let me know and I?ll suggest some fixes.
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  #6  
Old 02-05-2020, 12:31 PM
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Walt Walt is offline
 
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Make sure the pedals are fully retracted, sticky pedals that don't fully retract when released will cause the brakes to drag.
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  #7  
Old 02-05-2020, 08:31 PM
bob888 bob888 is offline
 
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Response to Plummit...Yes on both mains. Response to others, not related to non-existent parking brake and I don't think a pedal problem. Thanks for your feedback guys.
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  #8  
Old 02-05-2020, 09:33 PM
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JonJay JonJay is offline
 
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Some dragging of disk brakes is normal. However it shouldn?t be any harder to push around. Lift a wheel and spin by hand. It should spin relatively freely although some contact drag may be there.
Check your caliper pins and make sure the pads can move freely. If not, clean them out and polish them up a bit. You might also check for warped rotors while your at it especially if the dragging seems inconsistent.
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  #9  
Old 02-05-2020, 10:22 PM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
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Quote:
Originally Posted by JonJay View Post
Some dragging of disk brakes is normal. However it shouldn?t be any harder to push around. Lift a wheel and spin by hand. It should spin relatively freely although some contact drag may be there.
Check your caliper pins and make sure the pads can move freely. If not, clean them out and polish them up a bit. You might also check for warped rotors while your at it especially if the dragging seems inconsistent.
+1

a bit of dragging is not uncommon with new rotors/pads and sometimes with just new pads. I wouldn't concern myself until the brakes have been exercised with a couple of moderate to agressive stops.

Larry
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  #10  
Old 02-06-2020, 11:29 PM
bob888 bob888 is offline
 
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Location: Fresno, CA
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I ended up making a couple of shims with .025 aluminum and inserted them between the caliper parts. Problem solved for the most part. I expect to take them out at some point when the pads wear down some.
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