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opinions: 360 hp vs. 400 hp
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napeone

Joined: 10 Jan 2006
Posts: 36
Location: Birmingham, Al.

Posted: Fri Apr 18, 2008 11:17 am Post subject: Re: opinions: 360 hp vs. 400 hp

The PF was introduced as a high power engine version not a long life version, if you use the horsepower. 

But given the choice, I will take all the power I can reasonably get. I currently fly a Yak50 with the MP14 and a 260MT three blade.

David H.

mark.bitterlich(at)navy.m
Guest

Posted: Fri Apr 18, 2008 11:33 am Post subject: opinions: 360 hp vs. 400 hp

There is no question that if you increase the horsepower of an engine,

it's lifetime will become less.  As you said, if you use that horsepower

on a regular basis. With the PF, the choice is simply in your left hand.

I own a YAK 50 also, with an M-14P and have flown it with more than a

few props, except for the new MT FW-190 blades.  I'd take a PF engine

over mine in a heartbeat.  Better yet, an M-9.   



Mark Bitterlich

--

jland(at)popeandland.com
Guest

Posted: Fri Apr 18, 2008 11:33 am Post subject: opinions: 360 hp vs. 400 hp

Anybody have a PF engine, or a core or prop striked engine that they want to

sell?



Thanks!



Jay

mark.bitterlich(at)navy.m
Guest

Posted: Fri Apr 18, 2008 11:35 am Post subject: opinions: 360 hp vs. 400 hp

Option 3.  



Why: 



1.  It will climb faster.  

2.  With the bigger blower, it will not only develop more power on the

ground, it will also develop more power at altitude, meaning it will

have a higher ceiling.  You might want to consider putting a different

fuel system on it that allows leaning manually.  

3.  It will cruise at a faster speed with less RPM.

4.  For those that decry the additional boost, remember that boost is

simply a matter of how far you push the throttle forward.  You put a

throttle stop on it and it becomes a P model.  More or less.  Mostly

more, slightly less.  Remove the throttle stop and you have "WAR

RESERVE".    

5.  More power means more options, especially when operating from higher

altitude airports with short runways.  



I have an over 600 horsepower 68 Camaro.  It gets better fuel mileage

than my 1998 Dodge Pickup with less than half that power, IF you keep

your foot out of it.  Same thing can be said about any engine, including

the P // PF comparison.  



6.  The PF usually comes with a standard SAE prop flange, which makes it

compatible with more model props, at a slightly cheaper cost. 

7.  MT props will be cheaper if purchased used.  Why?  Most serious acro

guys have to be on the leading edge with prop performance.  When MT came

out with the thick root design blades, most of the serious guys

immediately went out and purchased them, and the old ones are out there

for sale much cheaper.  

8.  The selling price of PF model engines is climbing faster than P

models, which of course makes it the more valuable engine to have. 



Brian, have you thought of taking the middle road and going with a "B"

model?  I've thought about that a lot.  Take a "B" model, add Bill

Blackwell's piston and cylinder mods, and you end up with a tough as

nails M-14 with OVER 400 HP.  



Mark Bitterlich

--

mark.bitterlich(at)navy.m
Guest

Posted: Fri Apr 18, 2008 11:37 am Post subject: opinions: 360 hp vs. 400 hp

Russian engines are a question mark in a LOT of peoples eyes.  

Sorry.....  



I'm posting too much here... I'll stop.  I will say that the PF models

used to make me nervous too, until I saw how Hubie Tolson treated his,

and how long a few of them lasted.  



I am not nervous about them anymore.  They're a kick ass reliable

engine. 



Mark Bitterlich

 



--

buddairbum(at)cox.net
Guest

Posted: Fri Apr 18, 2008 1:57 pm Post subject: opinions: 360 hp vs. 400 hp

Do the new Romanian engines have a better reputation or worse?

[quote] 

 MALS-14 64E" <mark.bitterlich(at)navy.mil>

 

 Russian engines are a question mark in a LOT of peoples eyes.  

 Sorry.....  

 

 I'm posting too much here... I'll stop.  I will say that the PF models

 used to make me nervous too, until I saw how Hubie Tolson treated his,

 and how long a few of them lasted.

 

 I am not nervous about them anymore.  They're a kick ass reliable

 engine. 

 

 Mark Bitterlich

  

 

 --

napeone

Joined: 10 Jan 2006
Posts: 36
Location: Birmingham, Al.

Posted: Fri Apr 18, 2008 6:29 pm Post subject: Re: opinions: 360 hp vs. 400 hp

By " Best way to go", I mean that I would prefer to port, polish, and fine tune the carburetion and ignition as a better way to go than increasing boost as the most reliable alternative. Using the additional boost only at altitude also makes a lot of sense. Those living at high MSL would also benefit

David H.

jan.mevis(at)informavia.b
Guest

Posted: Sat Apr 19, 2008 1:05 am Post subject: opinions: 360 hp vs. 400 hp

That depends upon who gives his opinion: the Russian inspectors that I know,

always say that the Romanian engines are not as reliable. The Romanians of

course say the opposite. I met a Romanian pilot in Germany, who ferried a

beautiful Romanian YAK 52 tail dragger, with Romanian engine, and he was

quite satisfied about it. I see no objective reason why the quality and

finishing of a Russian engine should be very different from the finishing of

a Romanian engine.

 



Jan



--

richard.goode(at)russiana
Guest

Posted: Mon Apr 21, 2008 12:14 am Post subject: opinions: 360 hp vs. 400 hp

Hi Brian-I would be interested to hear any  technical/practical views of pilot's experience of P v. PF Regards

 Richard

  

 Richard Goode Aerobatics

Rhodds Farm

Lyonshall

Hereford

HR5  3LW

United Kingdom

  

 Tel:   +44 (0) 1544 340120

Fax:  +44 (0) 1544  340129

www.russianaeros.com



 [quote]   ---

brian-1927(at)lloyd.com
Guest

Posted: Wed Apr 23, 2008 3:45 pm Post subject: opinions: 360 hp vs. 400 hp

On Apr 21, 2008, at 1:11 AM, Richard Goode wrote:



 	  Quote: 	
		   Hi Brian-I would be interested to hear any technical/practical views  

 of pilot's experience of P v. PF Regards


	


Well, I have been flying a Yak-52 with the -PF and see no difference  

in operation other than with the throttle full forward the MAP is  

higher and it had better acceleration and rate of climb.



I would love to hear if there is enough experience with the engine to  

determine whether or not the working life is different.



--

Brian Lloyd                         3191 Western Drive

brian HYPHEN 1927 AT lloyd DOT com    Cameron Park, CA 95682

+1.916.367.2131 (voice)             +1.270.912.0788 (fax)



I fly because it releases my mind from the tyranny of petty things . . .

— Antoine de Saint-Exupéry



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