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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Tue Aug 04, 2015 5:53 am 
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Joined: Mon Jul 25, 2011 11:58 am
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Location: Austin, TX
That is so darn sweet! Can't wait to see how the flight testing goes (and sounds!)

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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Tue Aug 04, 2015 12:24 pm 
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Joined: Thu Aug 16, 2012 12:08 am
Posts: 294
That was COOL.


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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Tue Aug 04, 2015 10:24 pm 
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Joined: Mon Jan 21, 2013 8:26 am
Posts: 72
Location: Prince Albert, Saskatchewan, Canada
Hey all... Time for an update.

Got a little shop time tonite and listened to the latest podcast. Thank you Chris and Bobby for the kind words. Good to have you both back and your words on the show about this project are encouraging.

A little head scratching went on as to how to mount all this into an airplane easily. After a few more hairs fell out I came up with this plan. The servo and pitch arm will mount to the back of a new (slightly bigger) x mount. The whole power system will become one unit with a mounting point mid ship. The servo and mechanism will pass through a 2" hole in the firewall and the x mount will fasten to 4 mounting points just outside this opening. This should make attachment and maintenance easy as it comes out as a single unit and all the mechanism is in your hand.

ImageImage

Got around to getting the spinner cut out for the blade grips. 2 1/2" spinner fits over the hub. Image

Just have to build the new x mount now and it should be on the nose of a plane.

Chris.


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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Wed Aug 05, 2015 7:28 am 
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Joined: Sun Jul 31, 2011 3:43 pm
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Location: Houston, Texas
That is looking very very nice!!

Im sure you could easily sell that as a kit it looks very professional.

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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Thu Aug 06, 2015 10:09 pm 
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Joined: Mon Jan 21, 2013 8:26 am
Posts: 72
Location: Prince Albert, Saskatchewan, Canada
Thanks Ben. Not my best work as I'm in a bit of a rush to get this in the air now after the promising testing.

Bit of play time tonite produced a mount and tied it all together. Here is a pic of the completed unit and the new x mountImageImage

The whole unit slides through a 2" hole(with a small key way for clearance ) in the firewall and will be fastened with 4 bolts with blind nuts. Image

And it fits!!!!!Image

Weight and balance is good and it looks awesome with that huge blade up front. ImageImage

One mod to do. Not much prop ground clearance. Longer gear on the way. Image

Stay tuned. This might get exciting!!!!!

Chris


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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Fri Aug 07, 2015 8:13 am 
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Joined: Sun Jul 31, 2011 3:43 pm
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Location: Houston, Texas
Awesome!

Looking forward to see this one fly!

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Home of Burnt Wood RC The Splinter-T, Splinter-V Mini Multi's
Blade 450 Franken Heli
68" Velox Electric
TT eHawk 1400
K&A Models Mk 24 Spitfire
CAB Mustang
SimpleCopter TCopter


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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Sat Aug 08, 2015 11:02 pm 
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Joined: Mon Jan 21, 2013 8:26 am
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Location: Prince Albert, Saskatchewan, Canada
A little teaser. Getting closer. Just have to mount the battery and receiver.

Chris

http://youtu.be/5NFAQOqWDjg


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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Sun Aug 09, 2015 12:33 am 
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Joined: Thu Aug 16, 2012 12:08 am
Posts: 294
Very cool! I can think of a lot of fun things to try with that set up!

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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Sun Aug 09, 2015 7:40 pm 
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Joined: Mon Jan 21, 2013 8:26 am
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Location: Prince Albert, Saskatchewan, Canada
Quick report. Maiden done. It's awesome fellas!!!! Will post video highlights later!!!!


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 Post subject: Re: Big electric variable pitch prop.
PostPosted: Mon Aug 10, 2015 4:30 am 
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Joined: Wed Feb 29, 2012 4:09 am
Posts: 65
Very cool project. I flew SF340s for the start of my career and beta mode is the coolest thing about that plane. I could see putting this on a air show type plane and recreating the turbo raven. Take advantage of the constant speed and get it to haul. There is a video of the full scale turbo raven doing it's routine and another of its crash on YouTube somewhere.


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