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Reconsideration of mission and corvair power

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rloer(at)aceweb.com
Guest

Posted: Fri Sep 21, 2007 9:42 pm Post subject: Reconsideration of mission and corvair power

IT WAS WRITTEN:

 	  Quote: 	
		   4.  Corvair is too small for an 801 and too large for practical use in a 

 701.  You need cooling speed to keep the Corvair healthy which the 701 

 doesn't.


	




   Lets not count out the Corvair yet in the 701. William Wynne in Florida 

and his crew that have been very successful with the 601 have a 701 under 

construction with a Corvair mounted. In a few months we will have real world 

experience.



Robert Loer

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larry(at)macsmachine.com
Guest

Posted: Sat Sep 22, 2007 6:22 am Post subject: Reconsideration of mission and corvair power

Robert,

I didn't say it couldn't be done because someone's already fitted a 701 

with a Jab 3300.  It just seems counter productive to put a "merlin" or 

its cousin

on an aircraft that is so much slower than the cooling needs of the 

engine.  Subaru engines have been successful only because they have a 

radiator that

governs heat exchange.  It will certainly fly, but I believe it's a 

mismatch for long term use.

respectfully,

Larry McFarland 601HDS at www.macsmachine.com

do not archive

Robert Loer wrote:

 	  Quote: 	

 IT WAS WRITTEN:

> 4.  Corvair is too small for an 801 and too large for practical use 

> in a 701.  You need cooling speed to keep the Corvair healthy which 

> the 701 doesn't.

   Lets not count out the Corvair yet in the 701. William Wynne in 

 Florida and his crew that have been very successful with the 601 have 

 a 701 under construction with a Corvair mounted. In a few months we 

 will have real world experience.

 Robert Loer

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leinad

Joined: 19 Sep 2006
Posts: 283
Location: Central Virginia

Posted: Sat Sep 22, 2007 7:20 am Post subject: Re: Reconsideration of mission and corvair power

Larry,

Just wanted to point out that Corvairs have been on Pientpols ( a slow plane) since the early 60s.  

Dan 



 	  Quote: 	
		  Robert, 

I didn't say it couldn't be done because someone's already fitted a 701 

with a Jab 3300. It just seems counter productive to put a "merlin" or 

its cousin 

on an aircraft that is so much slower than the cooling needs of the 

engine. Subaru engines have been successful only because they have a 

radiator that 

governs heat exchange. It will certainly fly, but I believe it's a 

mismatch for long term use. 



respectfully, 



Larry McFarland 601HDS at www.macsmachine.com 

do not archive

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_________________
Scratch building XL with Corvair Engine

WHC228(at)aol.com
Guest

Posted: Sat Sep 22, 2007 7:39 am Post subject: Reconsideration of mission and corvair power

Corvairs on Pietenpols often had the original cooling system too.

 Billl C 

 601xl

 Lyc



See what's new atblank">Make AOL Your Homepage.

  [quote][b]

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larry(at)macsmachine.com
Guest

Posted: Sat Sep 22, 2007 7:51 am Post subject: Reconsideration of mission and corvair power

 	  Quote: 	
		  

 That's true Dan, but the Pietenpol is a much cleaner aircraft having a top speed of 100 mph. The 701 is draggy with an 85 mph top end and if pulled to exceed that by a Corvair, I'd worry about the structural of an 701 being pulled beyond its 110 mph VNE.    Larry McFarland  do not archive

   


	


 	  Quote: 	
		   Larry,

 Just wanted to point out that Corvairs have been on Pientpols ( a slow plane) since the early 60s.  

 Dan 

   

> Robert, 

> I didn't say it couldn't be done because someone's already fitted a 701 

> with a Jab 3300. It just seems counter productive to put a "merlin" or 

> its cousin 

> on an aircraft that is so much slower than the cooling needs of the 

> engine. Subaru engines have been successful only because they have a 

> radiator that 

> governs heat exchange. It will certainly fly, but I believe it's a 

> mismatch for long term use. 

>

> respectfully, 

>

> Larry McFarland 601HDS at www.macsmachine.com 

> do not archive 

>

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rloer(at)aceweb.com
Guest

Posted: Sat Sep 22, 2007 10:09 am Post subject: Reconsideration of mission and corvair power

No body implied you said it couldn't be done. Relax a little. For the benifit of all reading, I just offered the information that it is being done by someone in the public eye who will publish the results on his website. Then...no more guessing.



Robert

[quote]-----

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purplemoon99(at)bellsouth
Guest

Posted: Sat Sep 22, 2007 3:50 pm Post subject: Reconsideration of mission and corvair power

You should try a Ram built Subaru .100,130,140,or the Ram 250 Superchareged 

that ,ought to rip that 701's wings off with the 130 all of his engines are 

dynoed, so we are talking true HP.  Not to mention he's been at it for 25 

years, that always help's a little too.. For what it's worth I would listen 

to Larry Mac. He know's his Z " Plane's, engineering,and design. I think 

a100 HP engine with a Prince P-Tip would work fine then your 701 would jump 

off the ground and cruise well too.     Have a nice day  .       Joe N101HD 

601XL

---

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jetboy

Joined: 22 Jul 2006
Posts: 233

Posted: Sat Sep 22, 2007 4:58 pm Post subject: Re: Reconsideration of mission and corvair power

The modified 701 on the ZAC website has already been trialed and the Corvair is being removed for sale to being replaced a smaller engine. Sorry I dont know whether it was a compliance issue or flying issue.



Ralph

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_________________
Ralph - CH701 / 2200a

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