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Go Back   The Aerodrome Forum > WWI Aviation > Aircraft > Replica Aircraft


Replica Aircraft Topics related to the construction of WWI replica aircraft

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Old 29 August 2004, 11:44 AM   #91 (permalink)
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This pic shows a spar scarf almost done.
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Old 29 August 2004, 11:49 AM   #92 (permalink)
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This shows how the plane slides down the jig. Again, the blades are cut down to avoid damage to the guides. The cut depth is set very small and maybe ten or so passes are required, but each complete scarf only takes about a minute or less.
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Old 29 August 2004, 11:52 AM   #93 (permalink)
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This is the scarf jig for the ply.
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Old 29 August 2004, 11:54 AM   #94 (permalink)
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This shows a piece of the spar side 45 degree ply in the jig.
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Old 29 August 2004, 11:56 AM   #95 (permalink)
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After two passes. These are very light passes with the depth set barely above 0"
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Old 29 August 2004, 11:59 AM   #96 (permalink)
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After three passes. A little practice and you can 'adjust' the pass from end to end to even out any low or high sections.
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Old 29 August 2004, 12:01 PM   #97 (permalink)
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After five passes the finished scarf.
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Old 29 August 2004, 12:05 PM   #98 (permalink)
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This shows the plane on the jig. the steel plate serves to set the angle and also hold down the ply during planing. A complete cycle for each scarf is about 30 to 45 seconds and you can do all the scarfs for a spar in a very short time.
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Old 29 August 2004, 01:34 PM   #99 (permalink)
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Worldcruiser,
I really like your scarf jigs, especially the spar jig ! I have been trying to work out the best possible way to handle the large spar scarfs and you look like you have got it down just right !

For my ply scarfs, I am using a John Henry attachment for my planer. It works very well on the ply and with the addition or removal of spacers can attain any number of scarf ratios.

Last edited by Fokker210; 28 March 2005 at 06:49 PM.
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Old 29 August 2004, 01:35 PM   #100 (permalink)
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The underside of the unit.

Last edited by Fokker210; 28 March 2005 at 06:51 PM.
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