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Number of Propeller Blades.

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ggower_99(at)yahoo.com
Guest

Posted: Fri Feb 03, 2006 10:42 pm Post subject: Number of Propeller Blades.

Now that you talked propellers,   There is a limit in size & weight (mass?), given the giroscopic forces over the reduction drive...   Read about it but cant remember where.

   

  Saludos

  Gary Gower. 



Ken Erickson <ericksonkenneth(at)hotmail.com> wrote:

  



I am curious what might be advantages/disadvantages using a 2, 3 or 4-blade propeller on a 701 using a Rotax 912UL/912ULS. Would there be a performance advantage on a 701 during take-off etc.?



Ken Erickson

CH701 scratch building

rudder done...



--------

CH701 Scratch Builder

			

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

info(at)bianco.pl
Guest

Posted: Sat Feb 04, 2006 12:15 am Post subject: Number of Propeller Blades.

Most effective is one blade propeller. More blades You have more quite

propeller will be itself, and also engine will have to work on lower RPM.  

 

Tadeusz Forgacz

CH601 main spar and wings spars almost finished 

----

ronflys701

Joined: 09 Jan 2006
Posts: 5

Posted: Sat Feb 04, 2006 1:19 pm Post subject: Number of Propeller Blades.

3blades climb...2blades cruise

[quote]From: "BIANCO Tadeusz Forgacz" <info(at)bianco.pl>

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

To: <zenith-list(at)matronics.com>

Subject: Re: Number of Propeller Blades.

Date: Sat, 4 Feb 2006 09:12:04 +0100 (rodkowoeuropejski czas stand.)

<info(at)bianco.pl>

Most effective is one blade propeller. More blades You have more quite

propeller will be itself, and also engine will have to work on lower RPM.

Tadeusz Forgacz

CH601 main spar and wings spars almost finished 

----

Larry Martin

Joined: 10 Jan 2006
Posts: 31
Location: Cabot, Arkansas

Posted: Sat Feb 04, 2006 4:07 pm Post subject: Number of Propeller Blades.

One blade would be just a little unbalanced, wouldn't it?   Two might be 

better.

Just kidding, I know what you meant.

Do Not Archive

Larry, N1345L, www.skyhawg.com

---

_________________
701 with a Harley, www.skyhawg.com

leogates(at)allvantage.co
Guest

Posted: Sat Feb 04, 2006 5:24 pm Post subject: Number of Propeller Blades.

2 blades - In-flight adjustable: Climb and Cruise

 

Leo Gates

N601Z

Do not archive

 

-

NYTerminat(at)aol.com
Guest

Posted: Sat Feb 04, 2006 6:53 pm Post subject: Number of Propeller Blades.

Larry have you been up yet? Wondering how those wings and engine perform. Was 

wondering how much better the spped was with those wings.



Bob Spudis

N701ZX/912S  15hrs



In a message dated 2/4/2006 6:58:04 PM Eastern Standard Time, 

lrm01(at)centurytel.net writes:




One blade would be just a little unbalanced, wouldn't it?   Two might be 

better.

Just kidding, I know what you meant.

Do Not Archive

Larry, N1345L, www.skyhawg.com

Larry Martin

Joined: 10 Jan 2006
Posts: 31
Location: Cabot, Arkansas

Posted: Sun Feb 05, 2006 7:52 am Post subject: Number of Propeller Blades.

Man I tell you I am snake bit.  I got a lemon with my hog engine, it's going 

back to the factory.  The engine is going to be replaced, not fixed.  Ran 

fine until I put a prop on it.  Then it started running really bad, low oil 

pressure, started running hot, dieseled, blowing soot, running rich and so 

on.  Acted like the timing jumped, but I think the oil pressure was so low 

it wouldn't keep the lifters pumped up.  I think someone at the "American" 

factory left out the "O" ring in the oil pump.  It never had good oil 

pressure from the get-go.  According to the service manual it should have 

between 30 and 38 psi, it never had over 22 psi at high RPM and idles at 3 

psi.  The oil in the oil tank will drain into the crankcase in 24 hours.  I 

know some oil will pass thru the pump over a period of time, that is normal, 

but it's about a tea cup in 6 months.  Hog-Air is really being good helping 

me with this, certainly isn't their fault.  Brett is doing everything he can 

to make it right. Just my luck to get one put together by a drunk with a 

hangover on Monday morning or someone wanting to get drunk on a Friday 

afternoon.



This has really screwed up my plans to fly it to Sun N' Fun.  By the time I 

get my new engine, get the plane inspected and fly the 40 off, Sun N' Fun 

will be over.  So I guess me and my Dodge will go.  See you guys there.



Larry, N1345L, www.skyhawg.com

---

_________________
701 with a Harley, www.skyhawg.com

NYTerminat(at)aol.com
Guest

Posted: Sun Feb 05, 2006 1:33 pm Post subject: Number of Propeller Blades.

Larry,

Sorry to hear about your engine woes. At least they are willing to replace it 

and start again. I have been seriously thinking about the Pegasus wing now 

that I am flying my 701 with the Zenith wing. I am used to flying a Piper Arrow 

4 and I am not used to these slow speeds. Not to say that I can't get used to 

it but I was wondering if there is anyone else out there flying with the 

Pegasus wing and how much different the performance is. Also I noticed that you 

said they are not producing the wing right now. Do you know the reason why and if 

they will start up again? I won't make it to Sun n Fun this year, leaving for 

Ghana for 9 weeks.



Bob Spudis

N701ZX    

do not archive

In a message dated 2/5/2006 10:53:26 AM Eastern Standard Time, 

lrm01(at)centurytel.net writes:

Man I tell you I am snake bit.  I got a lemon with my hog engine, it's going 

back to the factory.  The engine is going to be replaced, not fixed.  Ran 

fine until I put a prop on it.  Then it started running really bad, low oil 

pressure, started running hot, dieseled, blowing soot, running rich and so 

on.  Acted like the timing jumped, but I think the oil pressure was so low 

it wouldn't keep the lifters pumped up.  I think someone at the "American" 

factory left out the "O" ring in the oil pump.  It never had good oil 

pressure from the get-go.  According to the service manual it should have 

between 30 and 38 psi, it never had over 22 psi at high RPM and idles at 3 

psi.  The oil in the oil tank will drain into the crankcase in 24 hours.  I 

know some oil will pass thru the pump over a period of time, that is normal, 

but it's about a tea cup in 6 months.  Hog-Air is really being good helping 

me with this, certainly isn't their fault.  Brett is doing everything he can 

to make it right. Just my luck to get one put together by a drunk with a 

hangover on Monday morning or someone wanting to get drunk on a Friday 

afternoon.



This has really screwed up my plans to fly it to Sun N' Fun.  By the time I 

get my new engine, get the plane inspected and fly the 40 off, Sun N' Fun 

will be over.  So I guess me and my Dodge will go.  See you guys there.



Larry, N1345L, www.skyhawg.com

ggower_99(at)yahoo.com
Guest

Posted: Sun Feb 05, 2006 8:18 pm Post subject: Number of Propeller Blades.

Hello Larry,

   

  I went to your page...  But couldnt find where are the air inlets in the cowling, to cool your engine...

  Probably is the angle of the front photo.

   

  Saludos

  Gary Gower.



NYTerminat(at)aol.com wrote:

  



Larry have you been up yet? Wondering how those wings and engine perform. Was 

wondering how much better the spped was with those wings.



Bob Spudis

N701ZX/912S 15hrs



In a message dated 2/4/2006 6:58:04 PM Eastern Standard Time, 

lrm01(at)centurytel.net writes:




One blade would be just a little unbalanced, wouldn't it? Two might be 

better.

Just kidding, I know what you meant.

Do Not Archive

Larry, N1345L, www.skyhawg.com

		

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

David X

Joined: 10 Jan 2006
Posts: 154
Location: Princeton, NJ, USA

Posted: Mon Feb 06, 2006 6:07 am Post subject: Re: Number of Propeller Blades.

Beautiful bird, Larry! Where is the air inlet for the air cooled engine? Looks like the inlets are filled with landing lights.

_________________
Zodiac 601 XL - CZAW Built - Rotax 912S
DO NOT ARCHIVE

Larry Martin

Joined: 10 Jan 2006
Posts: 31
Location: Cabot, Arkansas

Posted: Mon Feb 06, 2006 6:42 am Post subject: Number of Propeller Blades.

Hopefully Raymond Miller, the new owner, will be in production this summer. 

Watch my site, as soon as he gets it going, I will post it.  Plus I will be 

building his new site.  Larry, www.skyhawg.com.

---

_________________
701 with a Harley, www.skyhawg.com

Larry Martin

Joined: 10 Jan 2006
Posts: 31
Location: Cabot, Arkansas

Posted: Mon Feb 06, 2006 6:42 am Post subject: Number of Propeller Blades.

I started off with 1/4" opening around the landing lites, plan to open them 

as needed, if needed.  Brett tells me he had a hard time keeping his engine 

warn enough.  I may also open my hog nose if needed.  Thanks for asking, 

Larry, www.skyhawg.com.

P.S.  Cowling wasn't on when it ran hot, plus I had a high speed fan blowing 

40 degree air on it.

---

_________________
701 with a Harley, www.skyhawg.com

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