REFLECTOR: Parking Brake

Fri Jan 28 15:52:38 CST 2011

      VALVE

           a.. Innovative design allows control lever to be attached in any of four positions as well as on either side of valve body. 
              b.. Internal poppet valves insure easy, secure operation. 
              c.. Body is drilled for mounting with two 3/16" bolts. 
              d.. Valve body dimensions: 1.5"x2.0"x0.75" 
              e.. Control arm has 45° of travel. 
              f.. Max operating pressure: 1,200 psi. 
              g.. For use with MIL-H-5606 Hydraulic Fliud. 
              h.. Weight: 0.32 lbs. 
              i.. Side or top inlet ports: 1/8"NPT 
              j.. Outlet ports: 1/8" Female NPT or -4 Flare. 

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      Is this it? So how does it work ,Step on the brakes then lock it with this device? 

      Ron 

  ----- Original Message ----- 
  From: aminetech at bluefrog.com 
  To: jerry at jlbent.com ; Velocity Aircraft Owners and Builders list 
  Sent: Friday, January 28, 2011 12:29 PM
  Subject: Re: REFLECTOR: Parking Brake

  I have a parking brake installed, but never used it.  I'll have to look and see how it's installed.  When I recently replaced the brake shoes, one of the pucs popped out when I was pushing them in.  Obviously air got in, but it was very easy to bleed out.  That's probably not the same as a new system that can have air throughout the lines.

  John

  --- jerry at jlbent.com wrote:

  From: <jerry at jlbent.com>
  To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
  Subject: Re: REFLECTOR: Parking Brake
  Date: Fri, 28 Jan 2011 12:21:13 -0500

  I don't know if there was something unique in the installation on 44VF, but we had nothing but brake bleeding problems until we removed the parking brake.  I could just have been the line routing that was required to locate it on the bottom of the panel, but since it was removed, we have, for the first time, been completely successful in bleeding the brakes.  Of couse we have refined the technique with all of the practice and tools we have tried.

  Just a note about bleeding.  We have tried every combination and technique to bleed the brakes and finally have it sorted out.  I think the parking brake mask the best approach.  That is the simple oil can pumping fluid up from the caliper.  We have tried vacuum bleeding, raising the nose way up to make everything flow uphill,  high pressure fluid source, vacuum degass the fluid and none of them worked very well until we removed the parking brake.  We used the pressure bleed from the bottom after that and it seemed to work, but we would eventually find a few more bubbles.  Then we thought, maybe the pressure container is putting air in the fluid that escapes after the fluid is in the lines.  That seems to have been the issue.  Now bleeding seems to be very quick and easy (still messy).

  I would be interested to know how the lines were routed on those Velos that have the parking brake and no trouble bleeding the brakes.

  Jerry Brainard
  Jerry at JLBEnt.com

       -------Original Message-------
        From: Andy Millin 
        To: 'Velocity Aircraft Owners and Builders list' 
        Subject: REFLECTOR: Parking Brake
        Sent: Jan 28 '11 11:21am

        I have the Matco parking brake.

        I haven’t installed it yet. 

        I flipped the switch builder switch about a year ago from “That’s what I want” to “Only if you need it to fly”. 

        It is sitting on the shelf. 

        I can add it later. 

        :) 

        Andy 

        From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Bachman, Jonathan
        Sent: Friday, January 28, 2011 10:22 AM
        To: Velocity Aircraft Owners and Builders list
        Subject: Re: REFLECTOR: Annunicators? 

        Andy, 

        Did you pick the MATCO valve, or which? 

        Jon Bachman 

        575 430-9724 

        N956DR Std RG 

        jonathan.bachman at mtsi-va.com 

        From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Andy Millin
        Sent: Friday, January 28, 2011 7:14 AM
        To: 'Velocity xl'; 'Velocity Aircraft Owners and Builders list'
        Subject: Re: REFLECTOR: Annunicators? 

        It isn’t in the manual.  You gotta wanna. 

        www.aircraftspruce.com 

        :) 

        From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Velocity xl
        Sent: Thursday, January 27, 2011 10:37 PM
        To: Velocity Aircraft Owners and Builders list
        Subject: Re: REFLECTOR: Annunicators? 

        Parking Brakes???? How is this done? Must have missed it in the manual. Where is 

        it in the manual ? 

        Ron 

        ----- Original Message ----- 

        From: Rene Dugas 

        To: geoff.gerhardt at gmail.com ; 'Velocity Aircraft Owners and Builders list' 

        Sent: Thursday, January 27, 2011 6:43 PM 

        Subject: Re: REFLECTOR: Annunicators? 

        Attached a pic of my LED’s.   The switch activates all for test.  The Yellows are now the doors. 

        Rene’ 

        From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Geoff Gerhardt
        Sent: Wednesday, January 26, 2011 9:30 PM
        To: Velocity Aircraft Owners and Builders list
        Subject: Re: REFLECTOR: Annunicators? 

        Don, 

        I'm working on my panel as well.  This is what I have planned for my annunciator panel: 

        Pilot Door Ajar (RED) 

        Co-Plot Door Ajar (RED) 

        Speed Brake Down (YELLOW) 

        Fuel Pump On (GREEN) 

        Pitot Heat On (GREEN) 

        Alternator Out (RED) 

        Starter Engaged (GREEN) 

        Lower Gear (RED) (i.e. warning to lower gear) 

        In addition to the visual warning, red warning indicators will be connected to an audio alert wired into an unswitched input on the audio panel. 

        Geoff 

        http://thegerhardts.com/velocity 

        On Wed, Jan 26, 2011 at 8:55 PM, Don Johnston <don at numa.aero> wrote: 

        So I'm thinking about building an annunicator panel (with a "Push-to-Test" and dimmer). 

        Currently the list of indicators I have come up with is:

        Pilot Door Unsafe - RED
        CoPilot Door Unsafe - RED
        Low Voltage - RED
        Low Oil Press - RED
        Nose Gear Down - GREEN
        Left Main Down - GREEN
        Right Main Down - GREEN
        Fuel Pump On - AMBER
        Hydraulic Pump On - AMBER
        Pitot Heat - AMBER

        I'm going to have a pair of GRT displays so I'm thinking the low voltage, low oil press would be provided by their engine monitoring and would be unnecessary on an annunicator.

        What else would be good to have on an annunicator panel? Landing, nav and strobe lights?

        Don Johnston

        XL-RG

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