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| Replica Aircraft Topics related to the construction of WWI replica aircraft |
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31 October 2004, 10:33 AM
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#521 (permalink) |
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Wulffo´s airscrew now is basically finished.
 Working out the profile on the top side of one blade    Three generations of new airscrews. left: Oberursel Ur.II, middle Wulffo´s 160 PS Daimler Axial, right our own D.VII airscrew. Enjoy! Achim
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6 November 2004, 12:29 PM
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#522 (permalink) |
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No images today, but a short movie clip of Wulffo´s ballanced airscrew
Click here to see the clip! Enjoy! Achim
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7 November 2004, 08:47 AM
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#525 (permalink) |
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EricGoedkoop,
Thanks a lot! ACMercker, Thanks also! If I work on nothing else but a prop, I can do it in about two weeks, starting from selecting the wood to have the prop ballanced and finished with logo transfers and clear boat varnish. Since I have to do other things along the way I offer them in a time range between 4-8 weeks. To be honest, I can hardly wait to see the prop running on the engine! I´ll post another clip here when done. I also plan on doing another "Educational Movie" for our series, showing the ballanced airscrew being attached to the hub and then to the engine. Also included will be the whole sturtup procedure of the Daimler D.III engine. The filmimg will be done by the end of this month an I hope to come up with the new movie early in December. Achim
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9 November 2004, 10:48 AM
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#526 (permalink) |
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While I was working on the finishing of Wulffo´s Axial repro airscrew, my dear Alexandra was working out the rough shape of the second Axial using the chisel.
 Today I have applied the first coat of clear boat varnish on Wulffo´s propeller. The following are two detail shots of Wulffo´s prop before it was painted.  Propeller blade tip  Stenceling on the blade which identifies the technical specifications and manufacturer. The stenceling appears not to be uniform on each propeller manufactured by "AXIAL". Earlier types for instance used the golden colored letterings, while this is not seen often at airscrews manufactured towards the end of the war. Many variations appear to have existed. The same seems true for the choice of wood. For this one we chose the following sequence: Walnut Ash Walnut Oak Walnut Ash Walnut The "FTS" identification was applied so that no one ever will take this airscrew for a WW1 item. As discussed in my article on the making of AXIAL airscrews that was published in WW1 Aero some years ago, not all AXIAL made airscrews had the AXIAL factory transfers applied to the blade. Most probably this was only done with airscrews that required lead ballancing to hide the inserted lead "bolts" behind, although we also know of "unleaded" airscrews that wore the logos. Dave Watts was very helpfull with the examination and meassuring of two of his original Axial props for the rebuilt of this one. However, Wulffo´s propeller resembles one without the transfers attached. Enjoy! Achim
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17 November 2004, 12:26 PM
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#527 (permalink) |
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Today I have applied the final coat of clear varnish to Wulffo´s propeller. Now everything is prepared for the final acceptance run of the engine with the flying propeller on next weekend.
I have also finished a new seat shell for my D.VII. I have also started to film sequences of the making of the Fokker aluminum seat to create a "Educational Movie" of the making of the seat. It is truly fun working on the project. I´ll come up with images of the airscrew attached to the hub and the engine and the final acceptance run of the engine. Enjoy! Achim
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21 November 2004, 01:53 PM
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#528 (permalink) |
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Engine and airscrew approved!
Contratulations to all involved parties!
Today the engine and the new airscrew absolved its final acceptance run at full throttle! The engine started up with a few turns of the starting magnato, although wheather was very cold outside. 1320 RPM at full throttle at the stand 230 RPM at idling. It was impressive to see how good and smooth the new airscrew and the old engine fit together. We had a well experienced test pilot doing the test run. Here are some images.  The original Hub is installed to the new Axial repro propeller.  The airscrew is mounted to the engine. As you can see the airscrew now also got the AXIAL company transfer logos, since Wulffo requested these.  Isn´t it a real beauty out in sunlight?  And it spins perfectly smooth and produces a much mopre pleasant sound than the other airscrew.
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21 November 2004, 01:54 PM
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#529 (permalink) |
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 I really love this! Dirk Bende and his Co worker Klaus Scheuren did an excellent job on the engine. After the final acceptance run the engine was inspected carefully and will again be taken to parts. No sign of any problem could be found yet. Enjoy!
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21 November 2004, 02:18 PM
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#530 (permalink) |
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Two-seater Pilot
Join Date: Nov 2004
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Wow, you ran this thing up to WOT in the driveway, aiming at your house? Was it chained down; it doesn't look like it in the photo.
Crazy Bavarians...  Darn, that's really awesome...I wish I had skills like yours. F=MA |
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