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Chief Oshkosh finally flies like a 1932 Plylon racer

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Jon Harper25/10/2020 15:47:05
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59076818-3c2e-4ad8-8aad-93d482d94991.jpegWell holy cow, the Chief Oshkosh finally flies like a 1930s pylon racer! The angle of incidence increased to 1.5 degrees, and flying it at full throttle makes all the difference.

 

Attached is a video...turn the volume up because the elec motor sounds great because the entire fuselage resonates and sounds a lot like an IC engine.

 

Now to master landings....ha.

Photos by my friend Chuck.  Video by my brother in law Gord.

First flight video 4 years ago...not very good.

**LINK**

 

Pylon racer video, after many minor adjustments, flies amazing.

**LINK**

Edited By Jon Harper on 25/10/2020 15:47:58

Edited By Jon Harper on 25/10/2020 15:55:41

Edited By Jon Harper on 25/10/2020 16:24:16

Jon Harper25/10/2020 15:54:44
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14 forum posts
23 photos

7dfdfe06-46b8-45b9-9658-183498829d7c.jpeg210b1806-2088-4917-b21c-a95281319209.jpeg

Edited By Jon Harper on 25/10/2020 15:56:17

J D 825/10/2020 16:04:13
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Looking good.yes I don't think any 30's racing pilots could see where they were going.

Jon Harper25/10/2020 16:33:09
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189f105c-e9c8-4960-84ba-9879d4e94757.jpegJD, agreed I guess for pylon racing you need to see the ground side to side when rounding the pylon...

Jonb90e6b7d-eda3-4dec-8989-c82cd403a3fa.jpeg

Jon Harper25/10/2020 19:29:18
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Zipping by at full chat! The change from zero degree wing incidence to 1.5 degrees made a huge difference in its sit in the air.0e159d44-47be-457b-b901-4a24b167fa60.jpeg

cymaz25/10/2020 20:07:41
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Jon, I’ll race you when I get my Wittman Bonzo D-12 built in a few years? smile d

Jon Harper26/10/2020 16:00:55
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You are on. Steve W. designed both planes one after the other which is why they are so similar.

 

Full disclosure, this is a photo on 1 on my “landings”. Just an average everyday, wheels caught some very wet soggy grass and flipped over....whoops.  No damage, just bruised ego!cce6b705-d89d-4d71-ad91-e8196c90aa29.jpeg

Edited By Jon Harper on 26/10/2020 16:01:35

Jon Harper01/11/2020 17:14:47
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40506d14-37be-4229-b3c8-bf4701ce7d9f.jpeg33b7783a-c38c-4cc6-a36e-e2d6ff7c6a57.jpeg Went out this weekend again to enjoy flying the Chief and learn more about some of its flying characteristics.

Another great flight, super stability, loops, rolls, and of course speed.

The second flight I asked a friend to try knife edges. I noticed one of the cowl magnets had come loose, looked for some glue, found one, tested the hood and felt it would be secure enough with one magnet.

Of course my vertical battery has no strap because it is wedged in....right.

Well three knife edges were executed with the plane pulling toward the wheels requiring up elevator to maintain a straight knife edge line.....well wouldn’t you know we are just finishing up the last knife edge and all of a sudden the cowl, battery and esc were ejected.

I knew immediately it was a gonner. The plane had no control and spiralled down to earth from about 200ft up, while spiralling it occasional leveled out on its own and spiralled more...was hoping the timing of the level out would align with the ground.

Nope, .....spiralled into the edge of the forest where there are thick razor shrubs with some strong bows and pokie branches galore.

Found the plane and canopy within 10 yards of each other. The plane suffered some minor damage in two places on the wing which will need further Structural investigation. Fuselage, rudder and wing have multiple branch punctures that will be easy to repair.

All in all very lucky it is in good shape for a spiral into the bushes.

The battery required a grid search pattern to find. There was a cross wind at the time of the ejections and the Chief was travelling at full tilt so the 1 lb battery had some momentum. The cross wind pushed the aircraft into the forest and the cowl to the edge of the forest. Logic told us that the battery would therefore be in the field adjacent to the forest. 20 min later we found it about 60 yards from where the cowl was found.

All this because I was too lazy to put a drop of glue on the cowl magnet and strap the battery in!!! Another lesson learned.

So for knife edges, Dave had to struggle to learn how much rudder and elevator to apply to keep it tracking. Happily the tail was not dragging in the knife edge, probably because fuselage width behaves much like a wing since it is so tall.

So, repair and repeat.....with a drop of glue and battery strap this time!

Jon

Edited By Jon Harper on 01/11/2020 17:18:07

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