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Woodcomp CS curved propeller type

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m.grass(at)comcast.net
Guest

Posted: Wed Sep 06, 2006 3:04 pm Post subject: Woodcomp CS curved propeller type

Hi all,

  

 I am just about ready to order my cs prop. I was set on the Woodcomp. The company came back with the question "curved or straight" blades! 

 My question now is: Did anybody on this list has some comments on the new curved design from  Woodcomp? Attached you find pictures from the curved and straight blade design. I could not get good advise so far which would be better for my Tri Gear Europa XS with a 914. Are there any performance data available?

  

 Thanks in advance

  

 Michael Grass

 Europa XS TriGear, 914 Rotax

 Detroit, Michigan

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kheindl(at)msn.com
Guest

Posted: Wed Sep 06, 2006 4:04 pm Post subject: Woodcomp CS curved propeller type

Michael,



I have never seen the curved design. I bought the two-bladed SR3000/2W which 

is a different shape again: quite wide at the root with a lot of twist. It 

was designed for the 100-115 hp range.

I am having problems with it which I hope to have resolved soon. Currently 

using Warp Drive again.

You should first ask them what engine etc. it was designed for.

Other builders have gone for the straight blades and are very happy with it.



Karl





 	  Quote: 	
		  From: m.grass(at)comcast.net

Reply-To: europa-list(at)matronics.com

To: europa-list(at)matronics.com

Subject: Woodcomp CS curved propeller type

Date: Wed, 06 Sep 2006 23:03:27 +0000



Hi all,



I am just about ready to order my cs prop. I was set on the Woodcomp. The 

company came back with the question "curved or straight" blades!

My question now is: Did anybody on this list has some comments on the new 

curved design from  Woodcomp? Attached you find pictures from the curved 

and straight blade design. I could not get good advise so far which would 

be better for my Tri Gear Europa XS with a 914. Are there any performance 

data available?



Thanks in advance



Michael Grass

Europa XS TriGear, 914 Rotax

Detroit, Michigan


	




 	  Quote: 	
		  << Europa___blade_type_B.jpg >>


	




 	  Quote: 	
		  << Europa___blade_type_C.jpg >>

96victor(at)gmail.com
Guest

Posted: Wed Sep 06, 2006 4:10 pm Post subject: Woodcomp CS curved propeller type

Mike

  

 To hell with performance!  The curves are much sexier...

  

 Tom (Stuck with Airmaster straights)



 

 On 9/6/06, m.grass(at)comcast.net (m.grass(at)comcast.net) <m.grass(at)comcast.net (m.grass(at)comcast.net)> wrote: [quote]   Hi all,

  

 I am just about ready to order my cs prop. I was set on the Woodcomp. The company came back with the question "curved or straight" blades! 

 My question now is: Did anybody on this list has some comments on the new curved design from  Woodcomp? Attached you find pictures from the curved and straight blade design. I could not get good advise so far which would be better for my Tri Gear Europa XS with a 914. Are there any performance data available? 

  

 Thanks in advance

  

 Michael Grass

 Europa XS TriGear, 914 Rotax

 Detroit, Michigan

  

[b]

fklein(at)orcasonline.com
Guest

Posted: Wed Sep 06, 2006 5:26 pm Post subject: Woodcomp CS curved propeller type

Right on Tom...!



Fred

A194



do not archive



On Wednesday, September 6, 2006, at 05:10 PM, Tom Friedland wrote:



 	  Quote: 	
		   Mike

  

 To hell with performance!  The curves are much sexier...

  

 Tom (Stuck with Airmaster straights)

ptag.dev(at)tiscali.co.uk
Guest

Posted: Thu Sep 07, 2006 1:37 pm Post subject: Woodcomp CS curved propeller type

Hi! Michael  

In the absence of William Mills and David Joyce I can pass on to you some results of comparisons which they did on the Woodcomp propeller.    

I know that William has the scimitar shaped blades on an SR 3000. but his engine is the Rotax 912S . ….he also has the control unit by Mark Burton and I know it has a very fast facility to go into “beta” mode (reverse thrust) which I know William makes good use of on  his very short landing strip.   

Unfortunately William and David have just left on “ The Last of the Summer Wine  Tour” round France so will be about a week before returning and then on or about the 17th Sept. they go on the Canaries Trip for 10 days.  

However the chart I’m providing will serve as a point of interest until you can get a direct dialogue going with them either between the aforementioned trips or after.  

Bryan Allsop also has a Woodcomp Propeller but I know it has the straight blades on a 912S as has Davids but David has the Rotax 914.and I think his propeller is the 2000SR.  

Mark Burton who has developed a superior controller for the Woodcomp may be able to discuss some features with you in their absence. His e-mail address is:-   

  

Mark Burton markb(at)ordern.com (markb(at)ordern.com) But I believe he is also intending to do the Canaries trip as indeed I will be with Bryan Allsop.  

   

I attended a conducted tour of the Kremen/Woodcomp factory with the group which went on the first “Six Nations Tour” and I am pleased to confirm that they have a very dedicated and professional team working to exacting standards producing propellers with excellent quality at very advantageous prices.  

   

Best regards  

Bob Harrison.  

   

Herewith the document mentioned above……….I’m not sure, however, that the tables are for the scimitar 3000SR blades though.  

   

The Cedars,  Glascoed,  Pontypoool, Gwent.   NP4 OTZ  

Tel:  01495 785499  

_____________________________________________________________________  

  

To:  Ales Kremen  Woodcomp s.r.o.  

Vodolska 4,  250 70 ODOLENA VODA  

CZECH REPUBLIC  

2nd June 2006  

   

SR 3000/3 – SR2000/3 Performance Comparison Tests Results  

Flights carried out on 31st May 2006  

   

Conditions of the Flight Tests: -  

<![if !supportLists]>·        <![endif]>Both Propellers were fitted to Europa Monowheel Classic Reg. G-HOFC  

<![if !supportLists]>·        <![endif]>Both test flights were carried out with identical pay loads (near maximum all up weight) and the fuel used on the first flight was replaced before the second flight was made.  

<![if !supportLists]>·        <![endif]>The bugs gathered on the airframe on the first flight were removed before the second flight was made.  

<![if !supportLists]>·        <![endif]>Both sets of blades were clean before flight.  

<![if !supportLists]>·        <![endif]>The test flights were made between 7,000 and 7,200 feet above sea level where the air was absolutely stable and the wind speed was negligible.  

<![if !supportLists]>·        <![endif]>Both flights were carried out in the same area of uncontrolled airspace and with approximately the same headings.  

<![if !supportLists]>·        <![endif]>Fuel flow tests at the various indicated airspeeds were carried out at target 5,000 rpm engine speed to allow for the restriction on the SR 2000 reduced coarse pitch limit at high throttle settings.  

<![if !supportLists]>·        <![endif]>**  Engine oil temperature was 10 deg C higher for the second takeoff.  

<![if !supportLists]>·        <![endif]>QNH was 1027 mb and OAT at ground level was 12 deg C and at 7,000 ft was 1.5deg C  

<![if !supportLists]>·        <![endif]>Pilot: William  Mills        Observer: David Joyce  

           

SR 3000/3         

SR 2000/3             

Takeoff time                                                09.15 hrs         

Takeoff time                                                 10.50   hrs             

Landing time                                               10.15 hrs         

Landing time                                                11.40 hrs             

Ground run to T/O                                      183 yards         

Ground run to T/O   **                                242 yards             

Climb from 1100 to 2100 ft                         73 secs         

Climb from 1100 to 2100 ft    **                  71 secs             

Full power climb rate (at) 5,500   rpm   

and 74 Kts   between 3,500 /4,000 ft          1000 ft/min                                 

Full power climb rate (at) 5,500   rpm   

and 75 Kts   between 4,000 and 4,500 ft     950 ft/min                                                         

Max airspeed (at) 7,000 ft and   5,500 rpm   145 Kts         

Max airspeed (at) 7,000 ft and   5,500 rpm     141 Kts             

Fuel flow (at) max airspeed                         22.4 L/hr         

Fuel flow (at) max airspeed                           22.7 L/hr             

Fuel flow (at) 100 Kts IAS                          11.4 L/hr         

Fuel flow (at) 100 Kts IAS                            13.4 L/hr             

Fuel flow (at) 110 Kts IAS                          14.1   L/hr         

Fuel flow (at) 110 Kts IAS                            14.8 L/hr             

Fuel flow (at) 120 Kts IAS                          14.4 L/hr         

Fuel flow (at) 120 Kts IAS                            15.3 L/hr             

Fuel flow (at) 125 Kts IAS                          16.3 L/hr         

Fuel flow (at) 125 Kts IAS                            16.8 L/hr             

Fuel flow (at) 130 Kts IAS                          17.4 L/hr         

Fuel flow (at) 130 Kts IAS                            18.2 L/hr        

   

Conclusion:  The SR 3000/3 has a better all-round performance than the SR 2000/3.  Normally, the target rpm for high cruise speeds is between 4,500 and 4,700, which would give a slightly better fuel consumption, but for comparison purposes 5,000 rpm was selected to allow for the SR 2000/3 reduced coarse limit.  The average fuel flow between the speed range of 100 to 130 Kts was 14.72 L/hr for the SR 3000/3 and 15.70 L/hr for the SR 2000/3, which gives a fuel saving of 6.24%.  However, the SR 3000/3 result at 110 Kts appears high when plotted on a graph and it might be accounted for by the aircraft flying at the back of the lift/drag curve causing excessive drag.  If this is corrected by interpolation to say 13 L/hr at 110 Kts, the average fuel flow for the SR 3000/3 would be reduced to 14.5 L/hr, which gives a saving of 7.64%.  The ground run prior to take-off is 24% shorter with the SR 3000/3.  

…………………………………………………………………………………………………………………………………………………………………..  

-----Original Message-----

 From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of m.grass(at)comcast.net

 Sent: 07  September 2006 00:03

 To: europa-list(at)matronics.com

 Subject: Woodcomp CS curved propeller type  

     

Hi all,  

    

   

    

I am just about ready to order my cs prop. I was set on the Woodcomp. The company came back with the question "curved or straight" blades!   

    

My question now is: Did anybody on this list has some comments on the new curved design from  Woodcomp? Attached you find pictures from the curved and straight blade design. I could not get good advise so far which would be better for my Tri Gear Europa XS with a 914. Are there any performance data available?  

    

   

    

Thanks in advance  

    

   

    

Michael Grass  

    

Europa XS TriGear, 914 Rotax  

    

Detroit, Michigan  

    

   

  

       [quote][b]

M.Grass(at)comcast.net
Guest

Posted: Sat Sep 09, 2006 10:47 am Post subject: Woodcomp CS curved propeller type

All,

  

 thanks for the replies. This prop looks promising  with the preliminary data and, Fred I agree, very cool on the aircraft. I have  ordered it now. :<))

  

 The sad part is: It will still take a while before  I can give a report on the performance because of my building progress.   :<(

  

 Good part is that I still enjoy the building  :<)) . 

  

 I always wonder what ex builders do when their are  finished and not flying. 

  

 Thanks again

  

 Michael Grass

 Europa XS 914 Trigear

 Detroit

 [quote]   ---

Ivor Phillips

Joined: 16 Jan 2006
Posts: 253
Location: London UK

Posted: Sun Sep 10, 2006 3:06 am Post subject: Woodcomp CS curved propeller type

Hi Michael  

   

If you go to Mark Burton website    

   

http://www.smartavionics.com/   

You can download the Manual’s for the Propeller controller; additionally the CSC-1 can show MAP as well,    Further reducing your number of instruments if your panel is tight for space,  

Regards  

Ivor  

         

  

From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Michael Grass

 Sent: 09 September 2006 19:46

 To: europa-list(at)matronics.com

 Subject: Re: Woodcomp CS curved propeller type  

  

     

All,  

    

   

    

thanks for the replies. This prop looks promising with the preliminary data and, Fred I agree, very cool on the aircraft. I have ordered it now. :<))  

    

   

    

The sad part is: It will still take a while before I can give a report on the performance because of my building progress.  :<(  

    

   

    

Good part is that I still enjoy the building :<)) .   

    

   

    

I always wonder what ex builders do when their are finished and not flying.   

    

   

  

       [quote][b]

grahamsingleton(at)btinte
Guest

Posted: Sun Sep 10, 2006 12:49 pm Post subject: Woodcomp CS curved propeller type

Michael

who is your tech councillor? I am going to visit with Jim Price at 

Pontiac Sep 28th. Jim was TC for Thomas Scherer. Maybe we could call and 

swap stories? We will fly to Rough River Friday, back Sunday weather 

permitting.

Graham



Michael Grass wrote:



 	  Quote: 	
		   All,

  

 thanks for the replies. This prop looks promising with the preliminary 

 data and, Fred I agree, very cool on the aircraft. I have ordered it 

 now. :<))

  

 The sad part is: It will still take a while before I can give a report 

 on the performance because of my building progress.  :<(

  

 Good part is that I still enjoy the building :<)) .

  

 I always wonder what ex builders do when their are finished and not 

 flying.

  

 Thanks again

  

 Michael Grass

 Europa XS 914 Trigear

 Detroit



*

*

davidjoyce(at)doctors.org
Guest

Posted: Mon Sep 11, 2006 4:39 am Post subject: Woodcomp CS curved propeller type

Michael, I have been away last week, but am sure you have made a good

decision. The SR3000 is an impressive prop and the curved blades certainly

seemed to have an edge over the straight blades in the tests that I helped

William Mills do on his plane. Regards, David Joyce

---

M.Grass(at)comcast.net
Guest

Posted: Tue Sep 12, 2006 6:31 am Post subject: Woodcomp CS curved propeller type

Graham,



That would be great. Jim is my TC and he lives about 30 minutes from my 

house. I have not talked to him for a good year. Actually this is good 

timing  because I was going to contact him to have another look at my 

progress. I might put you to work too if you don't mind. I just am almost 

ready to close my wings but my fuselage has progressed quite a bit with the 

landing gear installed and the top bonded on. I am building a little bit out 

of sequence because of space considerations.



Michael Grass



---

grahamsingleton(at)btinte
Guest

Posted: Tue Sep 12, 2006 1:39 pm Post subject: Woodcomp CS curved propeller type

Michael

we might have time to call, talk to Jim. He will have a better idea of 

plans. We hope to fly to RR Friday coming back Sunday, I fly back to UK 

on Wednesday.

Graham



Michael Grass wrote:



 	  Quote: 	
		   



 Graham,



 That would be great. Jim is my TC and he lives about 30 minutes from 

 my house. I have not talked to him for a good year. Actually this is 

 good timing  because I was going to contact him to have another look 

 at my progress. I might put you to work too if you don't mind. I just 

 am almost ready to close my wings but my fuselage has progressed quite 

 a bit with the landing gear installed and the top bonded on. I am 

 building a little bit out of sequence because of space considerations.



 Michael Grass

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