VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-6/6A
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 08-16-2018, 06:24 AM
Dave Ross Dave Ross is offline
 
Join Date: Jan 2008
Location: Wakeman,Ohio
Posts: 39
Default

Try by unhooking bottom bolt on the master cylinder and swinging it up past horizontal, then pump. Any air should move out.
__________________
Dave Ross RV4 flying RV7 building EAA tech counselor
Reply With Quote
  #12  
Old 08-16-2018, 07:09 AM
Christopher Murphy Christopher Murphy is offline
 
Join Date: Feb 2007
Location: colorado
Posts: 766
Default Mounted upside down

If its mounted upside down as per early design you will never get all the air out until you turn the master cylinder right side up to bleed the system.

Cm
__________________
RV-4 "Mr. Twister"
Pitts S1S "Mexican Red" sold and missed
Mr. Twister Airshows
Rocky Mountain Renegades
the mission... have fun.
Reply With Quote
  #13  
Old 08-18-2018, 05:23 PM
petehowell's Avatar
petehowell petehowell is offline
 
Join Date: Jan 2005
Location: MN
Posts: 2,143
Default Fixed! - caliper problem..........

The owner figured it out - the brake line was coming in contact with the wheel pant and forcing the caliper to retract the puck when the brakes were released - the soft pedal was not air, it was caused by needing to force the puck out a long distance to contact the disk again.

Additional info - this plane has custom pants that allow the brakes to be bled with only an access panel removed.

the brake line was repositioned, and the pedal is firm all the time now.
__________________
Cheers,
Pete

Amateur Plane - RV-9A N789PH - 2050+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN

Last edited by petehowell : 08-18-2018 at 05:27 PM.
Reply With Quote
  #14  
Old 08-21-2018, 10:09 PM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 3,015
Default

Pete,

If a soft pedal can be pumped up and becomes hard, that points to seals in the master cylinder or some anamoly with the calipar (warped rotors have similar symptoms). Air in the lines will have the pedal soft until enough pedal travel has occurred to compress all of the air and then it goes hard, often progressively. This should be repeatable any number of times with the same amount of soft travel before going hard. If it is air in the lines, you could pump a hundred times and you'll still have the same amount of travel before the pedal goes hard.

Larry
__________________
N64LR
RV-6A / IO-320, Flying as of 8/2015
RV-10 in progress

Last edited by lr172 : 08-21-2018 at 10:14 PM.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 09:39 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.