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Old Mar 19, 2002, 01:56 PM
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East Hartford, CT. U.S.A.
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New PVC Pedal Launcher

I recently built a PVC (3/4") Pedal Launcher similar to the The PVC Pedal Launcher that was featured in the September 2001 S&E modeler. It has worked out great and was relatively inexpensive to build. It now has an approximate 15 degree incline (increased from 7.5 degrees in photo) and a 20 foot bungee providing the power. I've used it for Multiplex Picojet Combat and Multiplex Twinjet so far and I plan to use it for a Kyosho T33 Shootingstar EDF.

On the launcher in the photo is a Wallyworld $3.94 special weighted with 8 "D" cell batteries to approximate the launch weight of the Twinjet. The Launcher projected this flying test bed OK, but there was no radio control of the foam glider to prevent it's demise on landing. Three test launches and the Wallyworld foam glider's fuselage gave it's life for the cause. I sacraficed the test bed to save the flying aircraft. If there is any interest, I'll post some close ups of the launcher.
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Old Mar 19, 2002, 02:20 PM
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I'd like to see more!
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Old Mar 19, 2002, 02:26 PM
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Toledo Ohio, USA!
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I WOULD LIKE TO SEE LOTS MORE!!! I need something to launch my wally glider (RC conversion) and my Razor! I have been wanting one but couldnt come up with a design. THANK YOU!!
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Old Mar 19, 2002, 03:08 PM
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More !

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Old Mar 19, 2002, 03:56 PM
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Stratford Sikorsky, Connecticut, United States
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Yes Please.

Killer
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Old Mar 19, 2002, 05:00 PM
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launcher looks cool, it there a reason why you don't just bungee launch it by hand or does that have something to do with the Pedal part. I guess I am missing something? I would like to learn more.
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Old Mar 19, 2002, 08:12 PM
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East Hartford, CT. U.S.A.
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Parts List for New PVC Pedal Launcher

I've listed the parts I used to build the 3/4" PVC Pedal Launcher. The launcher can be built to suit your application, but mine is 2' wide by 5' long to accommadate several planes.

3 @ 3/4" T

2 @ 3/4" X (four connection cross joiners)

5 @ 3/4" end caps

6 @ 3/4" 90's

4 @ 1" T's

4 @ 1" to 3/4" adapters

3 @ 10" 3/4" lengths of PVC

1 @ small can of PVC cement

2 @ 3/4" metal pipe brackets

1 @ 3/8" X 3" bolt (unthreaded for release pin)

2 @ 1" welded steel rings

3 feet nylon cord

10 feet foam pipe insulation

3 @ plasstic tent stakes heavy duty

20 feet bungee or surgical tubing
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Old Mar 19, 2002, 08:18 PM
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Pedal Launcher Release Pivot Assembly

Pivot assembly detail
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Old Mar 19, 2002, 08:20 PM
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Pedal Launcher Release Pin Assembly

Pedal Launcher Release Pin Assembly detail
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Old Mar 19, 2002, 08:23 PM
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Pedal Launcher Release Pin and hold down

Pedal Launcher Release Pin and hold down detail
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Old Mar 19, 2002, 08:24 PM
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Looks good so far - Keep it comin' -
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Old Mar 19, 2002, 08:25 PM
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East Hartford, CT. U.S.A.
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Pedal Launcher Release Pin Attachment

Pedal Launcher Release Pin Attachment detail
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Old Mar 19, 2002, 08:28 PM
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Pedal Launcher Ring Attached to PJC

Pedal Launcher Ring Attached to PJC
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Old Mar 19, 2002, 08:32 PM
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Pedal Launcher Release Pin Bottom View

Pedal Launcher Release Pin Bottom View detail

I hope these photos are helpful to those Ezoners that may want to build a similar launcher.

I'll try to answer any questions
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Old Mar 19, 2002, 08:37 PM
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I'm still not sure what "catapults" it - is that white rope bungee?
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