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Spinner with Cooling Fins

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alaskajim(at)cox.net
Guest

Posted: Tue Jan 29, 2008 8:44 pm Post subject: Spinner with Cooling Fins

Recently someone mentioned a propeller manufacture who installed "cooling

fins" on their spinners.  Does anyone have information on this?   Jim

planecrazydld(at)yahoo.co
Guest

Posted: Wed Jan 30, 2008 3:24 am Post subject: Spinner with Cooling Fins

[quote][b]

Al Hays

Joined: 01 Oct 2007
Posts: 42
Location: Gore, VA

Posted: Wed Jan 30, 2008 5:13 am Post subject: Spinner with Cooling Fins

Dave,



That sounds familiar but I haven't found it yet.  However, yesterday  

on the CorvAircraft list WW had a post regarding the Corvair powered  

701 with 601 nosebowl on which Gus  put a 3" smaller diameter spinner  

and additional inlets to feed more cooling air.  Makes more sense to  

me than fins on the spinner unless the fins purpose has nothing to do  

with cooling.



Al Hays

601XL kit-starting fuselage/Corvair

STOL701 kit set aside probable Corvair



On Jan 30, 2008, at 6:21 AM, David Downey wrote:



 	  Quote: 	
		   I do not recall that thread but there is a german company (I think)  

 that makes a automatically variable pitch prop with the change  

 mechanism built into vanes in the spinner/hub...?



 James Sagerser <alaskajim(at)cox.net> wrote: --> Zenith-List message  

 posted by: James Sagerser



 Recently someone mentioned a propeller manufacture who installed  

 "cooling

 fins" on their spinners.  Does anyone have information on this?   Jim



   Dave Downey

   Harleysville (SE) PA

   100 HP Corvair



 ---------------------------------

 Never miss a thing.   Make Yahoo your homepage.

grs-pms(at)comcast.net
Guest

Posted: Wed Jan 30, 2008 2:31 pm Post subject: Spinner with Cooling Fins

As long ago as WW2 a Czech company, Avia, made a constant-speed (or maybe

just controllable) prop which had vanes on the spinner.  I believe the

spinner rotated in the airstream, driving a hydraulic pump.  I seem to

remember that Hartzell experimented with such a device. Anyone out there

with more knowlege about this?



George



Do not archive



---

d.goddard(at)ns.sympatico
Guest

Posted: Wed Jan 30, 2008 6:23 pm Post subject: Spinner with Cooling Fins

On another list I've been watching, (although not closely following) a very 

"heated" (pun intended) arguement about cooling and such. It occured to me 

that one solution to all this was of course to simply mount a very large fan 

to the front of the motor.......



---

grs-pms(at)comcast.net
Guest

Posted: Wed Jan 30, 2008 7:38 pm Post subject: Spinner with Cooling Fins

Back again to those thrilling days of yesteryear, in this case WW2:  The

Fw190 was powered by a BMW 801 air-cooled radial.  It had a cooling fan just

behind the propeller, geared to turn at 3.17 times propeller speed.



In aviation, it's hard to come up with an idea that hasn't already been

tried by someone, sometime.



George



do not archive



---

alex_01

Joined: 14 Jan 2007
Posts: 33

Posted: Thu Jan 31, 2008 3:07 am Post subject: Re: Spinner with Cooling Fins

please have a look here



http://www.silence-aircraft.de/index.html

 under propeller

prop2.JPG

Description:

Filesize:

7.29 KB

Viewed:

8642 Time(s)

prop.JPG

Description:

Filesize:

46.58 KB

Viewed:

553 Time(s)

planecrazydld(at)yahoo.co
Guest

Posted: Thu Jan 31, 2008 3:47 am Post subject: Spinner with Cooling Fins

http://www.v-prop.com/



Also the Zlin trainer has had a vane driven automatic prop for years. model 526?



Al Hays <alhays(at)hickoryhillfarmsheep.com> wrote:[quote] --> Zenith-List message posted by: Al Hays 



Dave,



That sounds familiar but I haven't found it yet.  However, yesterday  

on the CorvAircraft list WW had a post regarding the Corvair powered  

701 with 601 nosebowl on which Gus  put a 3" smaller diameter spinner  

and additional inlets to feed more cooling air.  Makes more sense to  

me than fins on the spinner unless the fins purpose has nothing to do  

with cooling.



Al Hays

601XL kit-starting fuselage/Corvair

STOL701 kit set aside probable Corvair



On Jan 30, 2008, at 6:21 AM, David Downey wrote:



[quote] I do not recall that thread but there       Be a better friend, newshound, and  [quote][b]

planecrazydld(at)yahoo.co
Guest

Posted: Thu Jan 31, 2008 9:49 am Post subject: Spinner with Cooling Fins

If I recall correctly, this also used atmospheric pressure resistance against the dome of the spinner to maintain the correct prop pitch. 



George Swinford <grs-pms(at)comcast.net> wrote:[quote] --> Zenith-List message posted by: "George Swinford" 



As long ago as WW2 a Czech company, Avia, made a constant-speed (or maybe

just controllable) prop which had vanes on the spinner.  I believe the

spinner rotated in the airstream, driving a hydraulic pump.  I seem to

remember that Hartzell experimented with such a device. Anyone out there

with more knowlege about this?



George



Do not archive



---

ashontz

Joined: 27 Dec 2006
Posts: 723

Posted: Fri Feb 01, 2008 9:03 am Post subject: Re: Spinner with Cooling Fins

Anyone ever heard of a one bladed prop. I'm not kidding, it actually existed and apparently worked well and was auto adjusting.

craig(at)craigandjean.com
Guest

Posted: Fri Feb 01, 2008 10:04 am Post subject: Spinner with Cooling Fins

That would be the Everel propeller:



http://www.notplanejane.com/aeromatic.htm#everel1



Somewhere on the Internet is a scan of an old magazine article on this.



And here is some NASA research:



http://www.hq.nasa.gov/office/pao/History/SP-445/ch4-5.htm



-- Craig

--

ashontz

Joined: 27 Dec 2006
Posts: 723

Posted: Fri Feb 01, 2008 10:07 am Post subject: Re: Spinner with Cooling Fins

EAA Experimenter did an article on it about 1994.



do not archive



 	  craig(at)craigandjean.com wrote: 	
		  That would be the Everel propeller:



http://www.notplanejane.com/aeromatic.htm#everel1



Somewhere on the Internet is a scan of an old magazine article on this.



And here is some NASA research:



http://www.hq.nasa.gov/office/pao/History/SP-445/ch4-5.htm



-- Craig

--

IFLYSMODEL(at)aol.com
Guest

Posted: Tue Feb 05, 2008 3:33 am Post subject: Spinner with Cooling Fins

Yes Andy: I have talked with Roscoe Morton who indicated that he had one  flight with the one bladed propeller. I did not get (remember) any of the  specifics other than Roscoe said it flew fine and seemed to perform OK.

 Lynn Nelsen

 601 HD



Who's never won?  Biggest Grammy Award surprises of all time on AOL Music.

  [quote][b]

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