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  #11  
Old 01-04-2012, 09:02 PM
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frankh frankh is offline
 
Join Date: Jul 2006
Location: Corvallis Oregon
Posts: 3,547
Default Better fuel economy

its a bit like an infinitely variable gearbox (thats transmission in American).

Frank
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  #12  
Old 01-04-2012, 09:07 PM
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Toobuilder Toobuilder is offline
 
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Quote:
Originally Posted by schristo@mac.com View Post
come on guys... someone is poking for 'fun'...
That's what I was thinking....

Don't fall for it guys!
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  #13  
Old 01-04-2012, 09:36 PM
Mark7986 Mark7986 is offline
 
Join Date: Jul 2006
Location: Fairmont MN
Posts: 41
Cool I Don't Get it!!!

My O my did did that shake the hornets nest. I must admit everyone is passionate about this subject.
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  #14  
Old 01-05-2012, 04:16 AM
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NickAir NickAir is offline
 
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Location: McMinnville, Oregon: HOME of the SPRUCE GOOSE
Posts: 540
Default

RV's are experimental. Do what you want.

Just don't get sucked into an old debate :-)

Different configuration on anything is because people like different things.

I have had both C/S and F/P, like many other pilots here.

They both have advantages and disadvantages for different missions.

Just meet your mission and your good to go...
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Working on a RV-4
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RV7 I0-360 C/S, Slider, AP, Glass, etc. sold.
RV6 O-320 F/P, Slider, AP, Steam, etc., sold
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  #15  
Old 01-05-2012, 05:20 AM
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RV7AV8R RV7AV8R is offline
 
Join Date: Feb 2005
Posts: 426
Default Cg on the rv7 is better with cs

On your Rv7 the cg will be much better with a CS prop along with all the other benefits. I have had both on my rv7, and like the CS.
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  #16  
Old 01-05-2012, 05:36 AM
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Brantel Brantel is offline
 
Join Date: Mar 2006
Location: Newport, TN
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A friend of mine usually fly alongside another friend that has a CS. We both have FP. All three have 180hp engines.

His has some differences over our FP planes.

1. He can take off ~10% sooner than us.
2. He can climb at a greater rate than us.
3. He looks like he threw a boat anchor out when he pulls the power off.
4. He has no problems with his empty CG where I have to limit baggage.

Top speed is a wash, slight advantage to the FP but it all depends on FP RPM and his RPM and MP.

While we can't climb at his rate, we can go faster while he is climbing. Net result is we can basically end up in the same place at the same time by leveraging that speed. We just do it at a shallower angle. He gets to altitude quickly but then must catch up to us.

If he is in front of us on a group arrival, we must give him room or we will eat his lunch on base and final. He can slow down instantly and we cannot.
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  #17  
Old 01-05-2012, 05:45 AM
mrreddick mrreddick is offline
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Location: Hangar/home at Hicks Airfield (T67), Fort Worth, TX
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Default FP vs CS

Quote:
Originally Posted by schristo@mac.com View Post
come on guys... someone is poking for 'fun'...
I totally agree! Surely this guy is just trying to stir things up on the forum and he has succeeded. It's like asking "Do you prefer a Garmin portable or an iPad for VFR flight".
Opinions start flying and the posts to the forum go up, woo hoo! BTW....I STILL prefer my iPad!
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  #18  
Old 01-07-2012, 05:48 PM
818 AV8R 818 AV8R is offline
 
Join Date: Nov 2009
Location: Los Angeles, CA
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as a pilot i like C/S because i have more control over the flight profile, i.e, better climb / cruise / descent, better fuel economy, better for acro and formation and of course the most important aspect is another knob to play with

as a mechanic / owner i dislike the C/S because it more expensive to purchase, a PITA to install and remove, higher cost of maintenance and another reason not to let the airplane sit for too long (seals dry out and oil seeps)

That being said: I am still gonna put a C/S on the front of my -8 but intstead of goin with the IO-390 i dream of, Im doin an IO-360 180hp
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  #19  
Old 01-07-2012, 08:26 PM
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hgerhardt hgerhardt is offline
 
Join Date: Oct 2006
Location: torrance, ca
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Would you ever buy a car with a one-speed transmission?
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  #20  
Old 01-07-2012, 08:35 PM
benbell4140 benbell4140 is offline
 
Join Date: Apr 2008
Location: broussard louisiana
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I would buy the car with one speed if it cost 1/4 the price and performed within 5% of a car with multiple speed transmission and had virtually no maintenance. We will all end up at our destination with a separation measured in a few minutes...
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