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Thread: Removing Williams Toe Brakes From A Clipper

  1. #1
    Administrator Steve Pierce's Avatar
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    Default Removing Williams Toe Brakes From A Clipper

    My brother bought this Clipper several years ago from an old friend of mine. It came with Williams Toe Brakes and having flown the airplane on a lot of cross country flights I do not like the loss of legroom. Having a lot of time with standard Clipper rudder pedals and brakes I prefer them over Univair pedals in the Pacer as well. Everytime I take a trip in this airplane I say I am going to install the stock rudder and brake pedals the previous owner gave me but I never take the time. Preparing for our annual trip to Oshkosh and I decided it is time.
    IMG_20180708_141529.jpg

    I removed the cowling and all the screws in the boot cowl up to the windshield. I hate PK screws and the different sizes that are scattered throughout the sheet metal installation so I draw a diagram on a box so I know which screw came out of where.
    IMG_20180708_141730.jpg

    With the screws out I can prop the boot cowl open to gain access to the pedals from outside of the airplane instead of standing on my head.
    IMG_20180708_142534.jpg

    IMG_20180708_145807.jpg

    IMG_20180708_141558.jpg
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    Administrator Steve Pierce's Avatar
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    Default Re: Removing Williams Toe Brakes From A Clipper

    After removing the gear fairings and belly fairings I had full access to the brake lines.
    Attachment 13748
    IMG_20180708_142455.jpg

    IMG_20180708_142508.jpg
    Attachment 13749

    Disconnected the brake lines at the gear leg and drained them into a bucket and then removed them at the master cylinder.There are two aluminum blocks that clamp around the fuselage tubing and two screws at either end that fasten the rudder bar plate to the fuselage structure.
    Attachment 13750
    IMG_20180708_141630.jpg

    IMG_20180708_141626.jpg
    Attachment 13751
    Last edited by Steve Pierce; 07-09-2018 at 08:23 AM.

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    Administrator Steve Pierce's Avatar
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    Default Re: Removing Williams Toe Brakes From A Clipper

    Disconnected the rudder cables on each side.
    IMG_20180708_145807.jpg

    IMG_20180708_145817_1.jpg
    Attachment 13752

    Attachment 13753

    and the safety wired parking brake connection.
    IMG_20180708_145855.jpg
    Attachment 13754
    Last edited by Steve Pierce; 07-09-2018 at 08:44 AM.

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    Administrator Steve Pierce's Avatar
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    Default Re: Removing Williams Toe Brakes From A Clipper

    After removing the two AN3 bolts on both clamps, the 2 screws on each end and the two screws at the firewall the whole assembly came right out.19 lbs with hardware and lines.
    IMG_20180708_163112.jpg

    Original pedals and cylinders weigh 6.2 lbs.

    IMG_20180708_150401.jpg
    Last edited by Steve Pierce; 07-09-2018 at 06:33 AM.

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    Administrator Steve Pierce's Avatar
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    Default Re: Removing Williams Toe Brakes From A Clipper

    To get the the Williams assembly in they cut a diagonal tube 11567-74, the braket for the center rudder pedal support and the two brake cylinder mounting brackets. I cut and fit a new tube to weld back in.
    IMG_20180708_182740.jpg

    This is the bracket I had a in my treasure from a previous repair. I am in the process of fabricating these for both left and right.
    IMG_20180708_174234.jpg

    Here is how they look when welded in.
    IMG_20180708_174359.jpg
    Last edited by Steve Pierce; 07-09-2018 at 06:38 AM.

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    Default Re: Removing Williams Toe Brakes From A Clipper

    The rudder cables were shortened for the Williams brakes so I will probably make new rudder cables. You can always tell stock Piper cables by the single swedge on the nicropress.
    IMG_20180708_162658.jpg
    Attachment 13760

    You can see the tree standard swedges when they shortened the rudder cable.
    IMG_20180708_162715.jpg
    Attachment 13761
    Last edited by Steve Pierce; 07-09-2018 at 08:51 AM.

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    Administrator Steve Pierce's Avatar
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    Default Re: Removing Williams Toe Brakes From A Clipper

    So now I have to fabricate the new brake cylinder brackets and weld the diagon tube and them back into the fuselage, install new rudder cables and fabricate new brake lines along with a section of floor board that was removed to install the Williams assembly. Hope to get some of it done in the evenings next week. A lot of work but I think it will pay off on the way to Oshkosh in a few weeks.
    I did find the top to that push to talk I lost a while back.
    IMG_20180708_145618.jpg
    Attachment 13762
    Last edited by Steve Pierce; 07-09-2018 at 08:55 AM.

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    Default Re: Removing Williams Toe Brakes From A Clipper

    Steve excellent thread but attachments on all posts below the first don't show come up when clicked.
    "Progress is our most important problem"

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    Default Re: Removing Williams Toe Brakes From A Clipper

    I flew that airplane one time for about one minute. I couldn’t get it on the ground and out of it fast enough.
    If you are 6’ tall and want to ruin a nice flying Clipper, buy the Cessna pedals from Steve and install them.
    Last edited by Gilbert Pierce; 07-09-2018 at 07:47 AM.

  10. #10

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    Default Re: Removing Williams Toe Brakes From A Clipper

    Wow, over 12 pounds saved! I have toe brakes on my 22/20, Cessna pedals but different rudder bar with brake reservoir on the firewall, my CFI and I have a fun time whacking each other with the yokes on crosswind days Makes me want to put Eddie Trimmer's yokes on her - that would get rid of at least 50% of the knee bruises!!

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