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Thread: Eliminating the Pacer's humpback look

  1. #1
    cook11's Avatar
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    Default Eliminating the Pacer's humpback look

    Does anyone know how the humped back look was taken out of the Mystery Pacer?

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    Glen Geller's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    Quote Originally Posted by cook11 View Post
    Does anyone know how the humped back look was taken out of the Mystery Pacer?
    I believe an enormous pile of money was used to smush it down.

    GG

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    Vagabondblues's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    I read that he cut down the standoffs on the frame that hold the wood longerons by 3 inches

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    Gilbert Pierce's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    Look at Ms. Pearl, copied from Jim Younkin’s Mystery Pacer. He lowered the center spine lowering the headroom in the rear seat. i.e. like a Clipper.
    http://miss-pearl.org/
    Last edited by Gilbert Pierce; 09-20-2018 at 06:29 PM.

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    Stephen's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    Quote Originally Posted by Gilbert Pierce View Post
    Look at Ms. Pearl, copied from Jim Younkin’s Mystery Pacer. He lowered the center spine lowering the headroom in the rear seat. i.e. like a Clipper.
    http://miss-pearl.org/
    Is this a minor alteration, with a log book entry? Hmmmm.
    "You can only tie the record for flying low."

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    Administrator Steve Pierce's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    There is a vee created by Piper 3/8" channel that supports the top stringer. That was cut and lower I am sure.

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    Stephen's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    Quote Originally Posted by Steve Pierce View Post
    There is a vee created by Piper 3/8" channel that supports the top stringer. That was cut and lower I am sure.
    I've lowered that vee section on my plane but, it does not really change the hump much. To get the top flat would take the removal of rear upper tubing and changing it to go straight across. I looked at Miss Perky's (aka the Pearl) pictures and it did not look like the tubing was changed. I'm not sure how these tubes are in the Clipper.
    "You can only tie the record for flying low."

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    Administrator Steve Pierce's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    I was thinking it was taller but it is higher just above the rear seat cross tube on the Tri-Pacer fuselages I have here than it is on the Clipper. Also the Clipper center stringer lays on the horizontal tubes aft of the rear seat where the Tri-Pacer has a short cathedral.
    IMG_20180921_101612.jpg

    Sent from my Pixel 2 XL using ShortWingPipers.Org mobile app

  9. #9
    cook11's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    My Pacer is down for a rebuild so I was looking at what would be involved we reducing the humpback appearance the Younkin mentioned. Here is what the airframe looks like:

    Pacer hump 1.jpgPacer hump 2.jpg

  10. #10
    Vagabondblues's Avatar
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    Default Re: Eliminating the Pacer's humpback look

    Re-read the article. He lowered the front attach for the stringer and also raised it about an inch and a half at the vertical stab. My Pacer does not have a baggage compartment which allows the "V" brace to slope almost to the middle of the "D" windows. Yours has a baggage compartment which changes the structure to behind the windows, from what I can see in the pictures. Since the structure is behind the windows the height of the stringer is about 4" higher than a model without the baggage. Adding height to the rear stringer attach would be the best was to reduce the humpback.

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