Matronics Email Lists :: View topic - Prop spinner advantages on a pusher ???

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Prop spinner advantages on a pusher ???

Matronics Email Lists Forum Index -> Kolb-List

View previous topic :: View next topic

Author Message

AtomicDog

Joined: 14 Dec 2010
Posts: 5
Location: Phoenix, Arizona

Posted: Fri Aug 12, 2011 8:33 am Post subject: Prop spinner advantages on a pusher ???

I am working on my firestar and ready to order my prop. However one of the options is for a spinner. My question is, are there any advantages to putting a spinner on a pusher type aircraft. I can see the aerodynamic advantages on a tractor aircraft, but I think these advantages are lost on a pusher.



I do like the looks of a prop with spinner however I am trying to keep the weight down.

_________________
Building Firestar II

Dana

Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

Posted: Fri Aug 12, 2011 9:09 am Post subject: Prop spinner advantages on a pusher ???

At 12:33 PM 8/12/2011, AtomicDog wrote:

  	  Quote: 	
		  --> Kolb-List message posted by: "AtomicDog" <MStudio828(at)aol.com>



 I am working on my firestar and ready to order my prop. However one of the options is for a spinner. My question is, are there any advantages to putting a spinner on a pusher type aircraft. I can see the aerodynamic advantages on a tractor aircraft, but I think these advantages are lost on a pusher.



 I do like the looks of a prop with spinner however I am trying to keep the weight down. 	


 A spinner can be as much of an advantage on a pusher as a tractor.  There was an article in Ultraflight magazine a year or so ago, a guy put one on his PPC... he reported 5-10% thrust increase, which translates into a similar improvement in rate of climb.



 -Dana

 

 --

 Bismark said God looks after fools, drunks, and the United 

 States.  

 He didn't say how long the Almighty's patience might endure.

    [quote][b]

byoungplumbing(at)gmail.c
Guest

Posted: Fri Aug 12, 2011 9:24 am Post subject: Prop spinner advantages on a pusher ???

I am working on my firestar and ready to order my prop. However one of the

options is for a spinner. My question is, are there any advantages to

putting a spinner on a pusher type aircraft. I can see the aerodynamic

advantages on a tractor aircraft, but I think these advantages are lost on a

pusher.



I do like the looks of a prop with spinner however I am trying to keep the

weight down.



--------

Building Firestar II



what little i have been schooled that in aerodynamics,,,,    at least at the

speeds we fly,  it doesn't make much difference in how you disturb or open

up the air space,,,  but it makes more difference in how you close it,

example:   for total drag reduction,  a blunt leading edge and tapered

trailing edge, is better or has less drag  than a  tapered leading edge and

a blunt trailing edge.    so the spinner would be better on a pusher than a

tractor,  for total drag reduction,,,  now as fer purdy,,,  that is a whole

different ball of wax.



boyd young

mkiii

utah

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Fri Aug 12, 2011 9:29 am Post subject: Re: Prop spinner advantages on a pusher ???

Here's a cheap spinner: a Motorcraft air filter.



If anybody is interested, I'll try and find out the part number, anyway it is plastic and easy to do.



Richard Pike

MKIII N420P (420ldPoops)

Motorcraft_Air_Filter_FA1632_111 (Large).jpg

Description:

Filesize:

52.03 KB

Viewed:

12805 Time(s)

Motorcraft_Air_Filter_FA1632_111 (Large).jpg

100_0880 (Large).JPG

Description:

Filesize:

95.64 KB

Viewed:

12805 Time(s)

fs2kolb(at)aol.com
Guest

Posted: Fri Aug 12, 2011 10:13 am Post subject: Prop spinner advantages on a pusher ???

 	  Quote: 	
		  Motorcraft Air Filter FA1632 	


   

        	  Quote: 	
		  --> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>



Here's a cheap spinner: a Motorcraft air filter.



If anybody is interested, I'll try and find out the part number, anyway it is 

plastic and easy to do.



Richard Pike

MKIII N420P (420ldPoops)



	
 

       

  [quote][b]

Rex Rodebush

Joined: 10 Jan 2006
Posts: 209
Location: Branson West area, Missouri

Posted: Fri Aug 12, 2011 11:50 am Post subject: Re: Prop spinner advantages on a pusher ???

When I ordered my Warp Drive prop I asked the guy (don't remember his name) about a spinner and he said it would be for looks only on a pusher.  But it seems to me there should be some drag reduction.  How much is the question??



Rex

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Fri Aug 12, 2011 2:57 pm Post subject: Re: Prop spinner advantages on a pusher ???

[quote="fs2kolb(at)aol.com"] 	  Quote: 	
		  Motorcraft Air Filter FA1632 	


  Hey! I bet that's why that particular picture had the tag it did!

(Facepalm)

Richard Pike

MKIII N420P (420ldPoops)

Mic

Joined: 22 Jul 2011
Posts: 12
Location: Ashland, Oregon

Posted: Fri Aug 12, 2011 4:01 pm Post subject: Re: Prop spinner advantages on a pusher ???

Good idea Richard.

I suspect from previous experience with boat hulls being designed for optimum benefit as the water passes aft of the greatest beam, that aircraft would experience a similar benefit as they move through the air.  A quick review of leading and trailing edge wing design would probably show this quite clearly.



I like the simple solution of this suggestion as well. After all it's not quite rocket science is it?

_________________
Mic
"It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring."
â€” Carl Sagan

"Education is not filling a bucket, but lighting a fire."
â€” W.B. Yeats

pj.ladd(at)btinternet.com
Guest

Posted: Sat Aug 13, 2011 12:38 am Post subject: Prop spinner advantages on a pusher ???

I am sure that my wife has a plastic bowl of about the right shape and 

dimensions in the kitchen (Not an area of the house with which I am 

familiar)



Cheers



Pat

Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Sat Aug 13, 2011 2:55 am Post subject: Prop spinner advantages on a pusher ???

Pat,

Do you mean to say that your wife does not allow you to enjoy cooking, not to mention the satisfaction derived from washing dishes? That is mean of her.

  

Do not archive.

Thom in Buffalo

On Sat, Aug 13, 2011 at 4:35 AM, Pat Ladd <pj.ladd(at)btinternet.com (pj.ladd(at)btinternet.com)> wrote:

  [quote]--> Kolb-List message posted by: "Pat Ladd" <pj.ladd(at)btinternet.com (pj.ladd(at)btinternet.com)>

   

 I am sure that my wife has a plastic bowl of about the right shape and dimensions in the kitchen (Not an area of the house with which I am familiar)

 

 Cheers

 

 Pat 

 

 ====================================

 arget="_blank">http://www.matronics.com/Navigator?Kolb-List

 ====================================

 http://forums.matronics.com

 ====================================

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ====================================

 

 

 

 [b]

_________________
Thom Riddle
Buffalo, NY (9G0)

Don't worry about old age... it doesn't last very long.
- Anonymous

frank.goodnight(at)att.ne
Guest

Posted: Sat Aug 13, 2011 5:32 am Post subject: Prop spinner advantages on a pusher ???

Morning Richard,

 I'm interested in a cheap spinner.Was thinking about a high priced one.cheap is better.

 Frank

  

  

  



 

   From: "fs2kolb(at)aol.com" <fs2kolb(at)aol.com>

To: kolb-list(at)matronics.com

Sent: Fri, August 12, 2011 1:10:35 PM

Subject: Re: Re: Prop spinner advantages on a pusher ???



 	  Quote: 	
		  Motorcraft Air Filter FA1632 	


 

   	  Quote: 	
		  --> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>


Here's a cheap spinner: a Motorcraft air filter.


If anybody is interested, I'll try and find out the part number, anyway it is 

plastic and easy to do.


Richard Pike

MKIII N420P (420ldPoops)




	




[quote][b][b]

David d.

Joined: 04 Jul 2011
Posts: 60
Location: Fitzgerald Ga.

Posted: Sat Aug 13, 2011 5:54 am Post subject: Re: Prop spinner advantages on a pusher ???

Just walk thru walmart, dollar store etc..  There are plenty of plastic shapes that would make  a spinner.   But how is it to be attached to the hub?

And some of these plastics degrade in a year or so.



David d.

pj.ladd(at)btinternet.com
Guest

Posted: Wed Aug 17, 2011 10:09 am Post subject: Prop spinner advantages on a pusher ???

Do you mean to say that your wife does not allow  you to enjoy cooking, not to mention the satisfaction derived from washing  dishes? >.

  

 Not only that. I make a point not to deprive her  of scrubbing the floors, cleaning the windows or carrying the logs in (and  chopping them)

  

 Pat

   [quote][b]

captainron1(at)cox.net
Guest

Posted: Wed Aug 17, 2011 7:01 pm Post subject: Prop spinner advantages on a pusher ???

Hey Pat does your wife have a sister? I may be interested in taking her off your hands if she hangs around your house and on your dime (quids), hard to find good broads in Arizona you know.



Ron (at) KFHU



=====================



---- Pat Ladd <pj.ladd(at)btinternet.com> wrote: 



=============

Do you mean to say that your wife does not allow you to enjoy cooking, not to mention the satisfaction derived from washing dishes? >.



Not only that. I make a point not to deprive her of scrubbing the floors, cleaning the windows or carrying the logs in (and chopping them)



Pat

--

kugelair.com

pj.ladd(at)btinternet.com
Guest

Posted: Thu Aug 18, 2011 12:44 am Post subject: Prop spinner advantages on a pusher ???

Hey Pat does your wife have a sister?

Hi Ron,



Yeah she does but I can`t let her go. Who would feed the stock and drive the 

mule?



Cheers



Pat

williamtsullivan(at)att.n
Guest

Posted: Thu Aug 18, 2011 3:17 am Post subject: Prop spinner advantages on a pusher ???

Ron- Where are you in Arizona?  

  

                                    Bill Sullivan

 do not archive

  

                                          



--- On Wed, 8/17/11, Ron (at) KFHU <captainron1(at)cox.net> wrote:



  	  Quote: 	
		  

From: Ron (at) KFHU <captainron1(at)cox.net>

Subject: Re: Re: Prop spinner advantages on a pusher ???

To: kolb-list(at)matronics.com

Date: Wednesday, August 17, 2011, 10:59 PM



 --> Kolb-List message posted by: "Ron  (at)  KFHU" <captainron1(at)cox.net (captainron1(at)cox.net)>



Hey Pat does your wife have a sister? I may be interested in taking her off your hands if she hangs around your house and on your dime (quids), hard to find good broads in Arizona you know.



Ron (at) KFHU



=====================



---- Pat Ladd <pj.ladd(at)btinternet.com (pj.ladd(at)btinternet.com)> wrote: 



=============

Do you mean to say that your wife does not allow you to enjoy cooking, not to mention the satisfaction derived from washing dishes? >.



Not only that. I make a point not to deprive her of scrubbing the floors, cleaning the windows or carrying the logs in (and chopping ww.matronics.com/Navigator?Kolb-List" target=_blank>http://www.matronics.========================



	
 [quote][b]

captainron1(at)cox.net
Guest

Posted: Thu Aug 18, 2011 6:27 am Post subject: Prop spinner advantages on a pusher ???

You got a point there, it was a long shot.



Ron (at) KFHU



=================

---- Pat Ladd <pj.ladd(at)btinternet.com> wrote: 



=============




Hey Pat does your wife have a sister?

Hi Ron,



Yeah she does but I can`t let her go. Who would feed the stock and drive the 

mule?



Cheers



Pat 

--

kugelair.com

captainron1(at)cox.net
Guest

Posted: Thu Aug 18, 2011 6:34 am Post subject: Prop spinner advantages on a pusher ???

I am in ( KFHU) Fort Huachuca / Sierra vista.



Ron (at) KFHU



================



---- william sullivan <williamtsullivan(at)att.net> wrote: 



=============

Â  Ron- Where are you in Arizona?Â  

Â 

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  Bill Sullivan

do not archive

Â 

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  



--- On Wed, 8/17/11, Ron (at) KFHU <captainron1(at)cox.net> wrote:

From: Ron (at) KFHU <captainron1(at)cox.net>

Subject: Re: Re: Prop spinner advantages on a pusher ???

To: kolb-list(at)matronics.com

Date: Wednesday, August 17, 2011, 10:59 PM




Hey Pat does your wife have a sister? I may be interested in taking her off your hands if she hangs around your house and on your dime (quids), hard to find good broads in Arizona you know.



Ron (at) KFHU



=====================



---- Pat Ladd <pj.ladd(at)btinternet.com> wrote: 



=============

Do you mean to say that your wife does not allow you to enjoy cooking, not to mention the satisfaction derived from washing dishes? >.



Not only that. I make a point not to deprive her of scrubbing the floors, cleaning the windows or carrying the logs in (and chopping them)



Pat

--

kugelair.com

le, List Admin.





--

kugelair.com

Display posts from previous:

	Matronics Email Lists Forum Index -> Kolb-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum