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Old Feb 12, 2014, 08:49 AM
Needs to do 52 legs !!
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Verenigd Koninkrijk, Fareham
Joined Aug 2008
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New Product
My F5B saw tooth props

Many thanks to Georgi Mirov for making this possible. Without you my friend this would never have happened.

The planform design is my own, custom pitch distribution.

Nominal size is 17.5" x 20.8 @ 75% diameter.

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Last edited by jjmouris; Feb 12, 2014 at 09:10 AM.
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Old Feb 12, 2014, 09:15 AM
Needs to do 52 legs !!
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Verenigd Koninkrijk, Fareham
Joined Aug 2008
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Worth a post just on it's own.

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Last edited by jjmouris; Feb 12, 2014 at 10:27 AM.
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Old Feb 12, 2014, 09:18 AM
Needs to do 52 legs !!
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Verenigd Koninkrijk, Fareham
Joined Aug 2008
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Successful first flight completed.

http://youtu.be/-7PsCrKMEVc

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Last edited by jjmouris; Feb 12, 2014 at 09:24 AM.
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Old Feb 12, 2014, 09:48 AM
Needs to do 52 legs !!
jjmouris's Avatar
Verenigd Koninkrijk, Fareham
Joined Aug 2008
7,097 Posts
Remo liked it on his Flip Flop in Italy.

But a little to much run time he said.

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Latest blog entry: My F5B saw tooth props
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Old Feb 12, 2014, 09:55 AM
Needs to do 52 legs !!
jjmouris's Avatar
Verenigd Koninkrijk, Fareham
Joined Aug 2008
7,097 Posts
Fits very well on the B12.

Just a shame the ICE2 160HV decided to let the smoke out.

No more Castle Creations for me.

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Last edited by jjmouris; Feb 12, 2014 at 10:21 AM.
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Old Feb 25, 2014, 02:23 PM
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Brazil, MG, Belo Horizonte
Joined Oct 2006
479 Posts
Congrats on the prop!

Sorry on the CC controller...

Where to run at the end? MARCUS? Kontronik? Shulze next gen?


Regards!

André
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Old Feb 26, 2014, 09:20 AM
Needs to do 52 legs !!
jjmouris's Avatar
Verenigd Koninkrijk, Fareham
Joined Aug 2008
7,097 Posts
Quote:
Originally Posted by Jebera View Post
Congrats on the prop!

Sorry on the CC controller...

Where to run at the end? MARCUS? Kontronik? Shulze next gen?


Regards!

André
Only one choice at the moment. The YGE 200 HV FAI.

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Old Mar 26, 2014, 10:03 PM
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Australia, VIC, Mitcham
Joined Dec 2011
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Wow, that's pretty awesome! Send a set to UIUC and get them to run some wind tunnel tests on it!
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Old Mar 27, 2014, 10:22 AM
Needs to do 52 legs !!
jjmouris's Avatar
Verenigd Koninkrijk, Fareham
Joined Aug 2008
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Andy, wind tunnel testing would be brilliant. I am hoping to work with a local universaty to achieve this.

However, these propellers are intended for some rather extreme operating conditions. They are designed to be used between speeds of 140kph to 300kph while consuming between 4000 and 6000 Watts at around 10.000 RPM. Way outside the operating conditions of your usual RC props and even wind tunnels.

My perhaps less accurate real world testing comparing the total energy in my airframe to the electrical energy consumed suggests total drive efficiency of above 50% however this depends on the forward airspeed at the start of the motor run.

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Last edited by jjmouris; Apr 20, 2014 at 09:55 AM.
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Old Apr 10, 2014, 04:17 AM
2012 NZ Speedcup - 231 MPH
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New Zealand, Tasman, Richmond
Joined Mar 2006
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Very nice looking moulds, who machined them?
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Old Apr 20, 2014, 09:56 AM
Needs to do 52 legs !!
jjmouris's Avatar
Verenigd Koninkrijk, Fareham
Joined Aug 2008
7,097 Posts
These props will soon be for sale.

Get in touch with me if you want one!!!

140 euro each

Replacements are 70 euro.
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