Today's Message Index:
----------------------
1. 01:12 AM - Re: 440 hp Super CJ for sale (Richard Goode)
2. 01:19 AM - Re: 440 hp Super CJ for sale (Didier Blouzard)
3. 05:54 AM - Re: 440 hp Super CJ for sale (n395v)
4. 06:44 AM - Re: Looking for The Great Bunndini (cjpilot710@aol.com)
5. 08:54 AM - Re: 440 hp Super CJ for sale (barryhancock)
6. 09:24 AM - Re: Re: 440 hp Super CJ for sale (Terry Calloway)
7. 09:30 AM - Re: 440 hp Super CJ for sale (barryhancock)
8. 09:49 AM - Re: 440 hp Super CJ for sale (Dale)
9. 10:10 AM - Re: Re: 440 hp Super CJ for sale (Kregg Victory)
10. 10:47 AM - 440 hp ?........ Hm (pilko2)
11. 11:06 AM - Re: Re: 440 hp Super CJ for sale (Roger Kemp M.D.)
12. 11:17 AM - Re: Re: 440 hp Super CJ for sale (Kregg Victory)
13. 11:42 AM - Re: Re: 440 hp Super CJ for sale (Roger Kemp M.D.)
14. 11:48 AM - 440hp Super Nanchang (Jerry Painter)
15. 04:01 PM - Re:Looking for The Great Bunndini (Cpayne)
16. 04:22 PM - Re:440 hp Super CJ for sale (Cpayne)
17. 06:22 PM - Re: Re: 440 hp Super CJ for sale (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
18. 06:44 PM - Re: Re: 440 hp Super CJ for sale (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
19. 09:17 PM - Bill Blackwell (Chris Wise)
20. 09:23 PM - Re: Re: 440 hp Super CJ for sale (cjpilot710@aol.com)
21. 10:53 PM - Power (Richard Goode)
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| Subject: | Re: 440 hp Super CJ for sale |
Barry-I,and I'm sure others,would be interested in knowing more about
this 440 HP engine.
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
----- Original Message -----
From: Barry Hancock
To: Yak-list@matronics.com
Sent: Thursday, April 22, 2010 9:52 PM
Subject: Yak-List: 440 hp Super CJ for sale
Gang,
Here is our latest listing...I flew this bird for the photo shoot and
it is not only beautiful, but with 440 hp it is an absolute gorilla!
But it's not enough for the owner, he is selling it to put the same FWF
on a Yak-50!
Picture gallery here:
http://gallery.me.com/bdogltd#100183
Complete listing will be on our site within 24 hours. Contact me
offline with any questions.
Happy Flying!
Barry
Barry Hancock
Worldwide Warbirds, Inc.
www.worldwidewarbirds.com
(909) 606-4444 office
(888) 407-7660 cell
"Making your aviation dreams a reality."
L-39 video: http://gallery.me.com/bdogltd#100140
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| Subject: | Re: 440 hp Super CJ for sale |
Indeed YES
Didier
2010/4/23 Richard Goode <richard.goode@russianaeros.com>
> Barry-I,and I'm sure others,would be interested in knowing more
> about this 440 HP engine.
> 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
>
> ----- Original Message -----
> *From:* Barry Hancock <bhancock@worldwidewarbirds.com>
> *To:* Yak-list@matronics.com
> *Sent:* Thursday, April 22, 2010 9:52 PM
> *Subject:* Yak-List: 440 hp Super CJ for sale
>
> Gang,
>
> Here is our latest listing...I flew this bird for the photo shoot and it is
> not only beautiful, but with 440 hp it is an absolute gorilla! But it's not
> enough for the owner, he is selling it to put the same FWF on a Yak-50!
>
> Picture gallery here:
>
> http://gallery.me.com/bdogltd#100183
>
> Complete listing will be on our site within 24 hours. Contact me offline
> with any questions.
>
> Happy Flying!
>
> Barry
>
> Barry Hancock
> Worldwide Warbirds, Inc.
> www.worldwidewarbirds.com
> (909) 606-4444 office
> (888) 407-7660 cell
> *"Making your aviation dreams a reality."*
> L-39 video: http://gallery.me.com/bdogltd#100140
>
> *
>
> href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/Navigator?Yak-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c*
>
>
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> and is believed to be clean.
> *http://www.invictawiz.com/* <http://www.invictawiz.com/>
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>
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
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| Subject: | Re: 440 hp Super CJ for sale |
Looks like a GEOSOCO PF engine but with electric start am I seeing fuel injectors
on the dress kit photo, or is the air start still hooked up?
--------
Milt
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295388#295388
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| Subject: | Re: Looking for The Great Bunndini |
Gray was at Sun&Fun last week. And was on his way to a wedding there in
Florida after. Be advised that Gray does not carry a cell phone.
Bit of a delightfuly strange duck.
Jim "Pappy" Goolsby
-----Original Message-----
From: elmar.h@shaw.ca
Sent: Fri, Apr 23, 2010 1:31 am
Subject: Yak-List: Looking for The Great Bunndini
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| Subject: | Re: 440 hp Super CJ for sale |
According to Bill Blackwell, the exhaust is good for 10% increase in horsepower,
thus the 400hp x 10% = 440 hp.
--------
Barry Hancock
Worldwide Warbirds, Inc.
(909) 606-4444
www.worldwidewarbirds.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295408#295408
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| Subject: | Re: 440 hp Super CJ for sale |
Barry,
I would have to disagree with Bill on this one.
Most likely his over simplification of the equation Exhaust = Horsepower is based
on the automobile. In that the automobile the exhaust pipe is too small or
the muffler has a lot of air resistance then this can cause back-pressure. Dramatic
changes of the above can result in substantial increases in horsepower
like 10%.
None of this exist on the stock Russian exhaust. High-performance exhaust systems
use headers, big tail pipes and free-flowing mufflers to eliminate back-pressure
in the exhaust system and with the exception of the muffler it is probably
already fairly efficient.
Just my own opinion but I would have a very hard time believing you could bolt
on 40 more horsepower that easily. Most likely the equation was a transcription
error from the Dollars = Horsepower equation. :)
I will leave it at that and hope some of you engineers out there will chime in.
George are you listening?
Pumper
ps Yet another time I find myself missing Deno.
On Apr 23, 2010, at 10:53 AM, barryhancock wrote:
>
> According to Bill Blackwell, the exhaust is good for 10% increase in horsepower,
thus the 400hp x 10% = 440 hp.
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| Subject: | Re: 440 hp Super CJ for sale |
LOL, that may be, Pumper. I'm going on what Bill told me and have not seen any
data one way or the other. I do know that this aircraft accelerates perceptibly
faster than my Yak-50....
--------
Barry Hancock
Worldwide Warbirds, Inc.
(909) 606-4444
www.worldwidewarbirds.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295416#295416
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| Subject: | Re: 440 hp Super CJ for sale |
Does not tuned exhaust mean equal length pipes so there is also temp control from
exhaust valve to port? How about slip joints for crack control? Looks all welded
to me.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295419#295419
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| Subject: | Re: 440 hp Super CJ for sale |
I suspect that to get the 10% or 40 HP increase would require the new
exhaust, also, the higher compression pistons, rings and new valves,
sparkplugs etc that Bill offers. You will not get a 10% increase in power
on the M14P just by changing the exhaust alone. With all these mods you will
also be shortening the time between TBO's. I will probably do this to my
50.... Who ever said being cool was cheap................-:)
Kregg Victory
Victory Aero LLC
2502 John Montgomery Dr.
San Jose, CA 95148
408-836-5122
www.balancemyprop.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of barryhancock
Sent: Friday, April 23, 2010 9:30 AM
Subject: Yak-List: Re: 440 hp Super CJ for sale
<bhancock@worldwidewarbirds.com>
LOL, that may be, Pumper. I'm going on what Bill told me and have not seen
any data one way or the other. I do know that this aircraft accelerates
perceptibly faster than my Yak-50....
--------
Barry Hancock
Worldwide Warbirds, Inc.
(909) 606-4444
www.worldwidewarbirds.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295416#295416
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| Subject: | 440 hp ?........ Hm |
If an extra 10% or 40 hp was available from the exhaust alone I think
Vladimir.. Igor ... Yuri.. or whoever would have exploited it for the
Russian Teams before now.......
Oh yes and that clever Yurgis chap may have too...
kp
Message 11
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| Subject: | Re: 440 hp Super CJ for sale |
Kregg,
Looking cool means sounding cool. Having heard the exhaust on some CJ's
around here they do not have the throaty roar of current exhaust on the CJ.
Have not heard the exhaust on a M-14. But the sound made and heard is all in
the eye or the ear of the beholder.
But the real question is why modify the sexiest YAK made with the exception
of the YAK3, 9, or 11. But their sound comes from a different displacement.
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Kregg Victory
Sent: Friday, April 23, 2010 12:10 PM
Subject: RE: Yak-List: Re: 440 hp Super CJ for sale
I suspect that to get the 10% or 40 HP increase would require the new
exhaust, also, the higher compression pistons, rings and new valves,
sparkplugs etc that Bill offers. You will not get a 10% increase in power
on the M14P just by changing the exhaust alone. With all these mods you will
also be shortening the time between TBO's. I will probably do this to my
50.... Who ever said being cool was cheap................-:)
Kregg Victory
Victory Aero LLC
2502 John Montgomery Dr.
San Jose, CA 95148
408-836-5122
www.balancemyprop.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of barryhancock
Sent: Friday, April 23, 2010 9:30 AM
Subject: Yak-List: Re: 440 hp Super CJ for sale
<bhancock@worldwidewarbirds.com>
LOL, that may be, Pumper. I'm going on what Bill told me and have not seen
any data one way or the other. I do know that this aircraft accelerates
perceptibly faster than my Yak-50....
--------
Barry Hancock
Worldwide Warbirds, Inc.
(909) 606-4444
www.worldwidewarbirds.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295416#295416
Message 12
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| Subject: | Re: 440 hp Super CJ for sale |
Great Point. It makes Sexy-------------Super Sexy!!!!!!!!!!!!
Ever flown a 50 with a big engine?
Kregg
Victory Aero LLC
2502 John Montgomery Dr.
San Jose, CA 95148
408-836-5122
www.balancemyprop.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Roger Kemp M.D.
Sent: Friday, April 23, 2010 11:06 AM
Subject: RE: Yak-List: Re: 440 hp Super CJ for sale
Kregg,
Looking cool means sounding cool. Having heard the exhaust on some CJ's
around here they do not have the throaty roar of current exhaust on the CJ.
Have not heard the exhaust on a M-14. But the sound made and heard is all in
the eye or the ear of the beholder.
But the real question is why modify the sexiest YAK made with the exception
of the YAK3, 9, or 11. But their sound comes from a different displacement.
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Kregg Victory
Sent: Friday, April 23, 2010 12:10 PM
Subject: RE: Yak-List: Re: 440 hp Super CJ for sale
I suspect that to get the 10% or 40 HP increase would require the new
exhaust, also, the higher compression pistons, rings and new valves,
sparkplugs etc that Bill offers. You will not get a 10% increase in power
on the M14P just by changing the exhaust alone. With all these mods you will
also be shortening the time between TBO's. I will probably do this to my
50.... Who ever said being cool was cheap................-:)
Kregg Victory
Victory Aero LLC
2502 John Montgomery Dr.
San Jose, CA 95148
408-836-5122
www.balancemyprop.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of barryhancock
Sent: Friday, April 23, 2010 9:30 AM
Subject: Yak-List: Re: 440 hp Super CJ for sale
<bhancock@worldwidewarbirds.com>
LOL, that may be, Pumper. I'm going on what Bill told me and have not seen
any data one way or the other. I do know that this aircraft accelerates
perceptibly faster than my Yak-50....
--------
Barry Hancock
Worldwide Warbirds, Inc.
(909) 606-4444
www.worldwidewarbirds.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295416#295416
Message 13
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| Subject: | Re: 440 hp Super CJ for sale |
No but if it like the Viper with the big mouth and the big engine it ought
to be kick ass!
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Kregg Victory
Sent: Friday, April 23, 2010 1:15 PM
Subject: RE: Yak-List: Re: 440 hp Super CJ for sale
Great Point. It makes Sexy-------------Super Sexy!!!!!!!!!!!!
Ever flown a 50 with a big engine?
Kregg
Victory Aero LLC
2502 John Montgomery Dr.
San Jose, CA 95148
408-836-5122
www.balancemyprop.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Roger Kemp M.D.
Sent: Friday, April 23, 2010 11:06 AM
Subject: RE: Yak-List: Re: 440 hp Super CJ for sale
Kregg,
Looking cool means sounding cool. Having heard the exhaust on some CJ's
around here they do not have the throaty roar of current exhaust on the CJ.
Have not heard the exhaust on a M-14. But the sound made and heard is all in
the eye or the ear of the beholder.
But the real question is why modify the sexiest YAK made with the exception
of the YAK3, 9, or 11. But their sound comes from a different displacement.
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Kregg Victory
Sent: Friday, April 23, 2010 12:10 PM
Subject: RE: Yak-List: Re: 440 hp Super CJ for sale
I suspect that to get the 10% or 40 HP increase would require the new
exhaust, also, the higher compression pistons, rings and new valves,
sparkplugs etc that Bill offers. You will not get a 10% increase in power
on the M14P just by changing the exhaust alone. With all these mods you will
also be shortening the time between TBO's. I will probably do this to my
50.... Who ever said being cool was cheap................-:)
Kregg Victory
Victory Aero LLC
2502 John Montgomery Dr.
San Jose, CA 95148
408-836-5122
www.balancemyprop.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of barryhancock
Sent: Friday, April 23, 2010 9:30 AM
Subject: Yak-List: Re: 440 hp Super CJ for sale
<bhancock@worldwidewarbirds.com>
LOL, that may be, Pumper. I'm going on what Bill told me and have not seen
any data one way or the other. I do know that this aircraft accelerates
perceptibly faster than my Yak-50....
--------
Barry Hancock
Worldwide Warbirds, Inc.
(909) 606-4444
www.worldwidewarbirds.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295416#295416
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| Subject: | 440hp Super Nanchang |
Hi Barry--
Beautiful airplane--kudos to whoever is responsible. Interesting nose gear
fairing, kind of like the Australian "Reno" Nanchang that was listed a
while back. BTW, haven't heard anything about Hal "Batman" Morley's new
airplane, what with FW 190 "Dora" prop, faired cowling etc. Howzit, Hal?
Pictures etc?
Jerry Painter
Wild Blue Aviation
425-876-0865
JP@FlyWBA.com
www.FlyWBA.com
Flight Training
Aircraft Maintenance and Restoration
Pilot Supplies
Hangar 28
Arlington Municipal Airport
18228 59th Dr. NE
Arlington, WA 98223
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| Subject: | Re:Looking for The Great Bunndini |
"The Great Bunndini" left on Monday. He sat here on the ground during the Lakeland
show, saving that precious 85 gallons of 100LL he sucked up into his "Haiyan
C" at the Eglin AFB show before SNF...
Gas Whore indeed. That patrol version of the CJ-6A sports SS tanks and 95 gallons
capacity.
Craig Payne
Message 16
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| Subject: | Re:440 hp Super CJ for sale |
Wow! 440HP "Gorilla" engine, slick, streamlined nosewheel fairing; Blackwell side
exhaust, Massive 3-blade propeller, Malcom "speed" canopy... boy I bet it could
run really fast. Should put ANY simple paddle-blade, po' boy CJ-6 jalopy
to shame on a speed run,
That's 80HP more than a plain 360, properly tuned of course. How could any plain
360 keep up?? Why bother with a contest, just hand over the trophy....
Craig Payne
Message 17
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| Subject: | Re: 440 hp Super CJ for sale |
I've tried to stay out of this discussion, but it is hard to.
Lots of things make power, but in the end it is a matter of fuel and air. Period.
Improving cylinder balance and flow efficiency will certainly increase horsepower.
I am sure this exhaust system goes a long way towards doing that.
However, simply bolting it on and getting 10% increase is impossible. IMPOSSIBLE.
Just not going to happen....
That said.....
If you then recurve the fuel flow, possibly re-jetting the carb, and then messing
with the timing on the engine to take advantage of the flow increase, then
10% power is indeed do-able.
Tom Johnson's YAK-50 has a custom made exhaust that is on the same lines as this
system. In talking to him some time back, he mentioned to me that Bill had
to re-time the engine and do a lot of tuning to the fuel system to make it all
work. That leads me to believe that Bill Blackwell IS INDEED doing a complete
re-tuning of the entire engine to take advantage of the improved exhaust. If
the timing is advanced, the fuel flow is increased, and the cylinders are equalized
and flowed better..... oh man, things can indeed happen!
Tom also backed up a lot of the work done with engine and prop THRUST tests. Not
a fully dynamic test by any means. That is very very hard to do, however...
those tests he showed me led me to believe that quite a substantial increase
was achieved. Exactly how much of an increase was made, was very hard to say.
Throwing a number out like "440 HP", is simply not going to be too accurate.
We tend to look at a number like that and expect it to be a measured value
and if it is not, then it must be total bull. There is a middle ground here.
The engines Bill are producing clearly have a horsepower increase. 10% is certainly
possible given what is being done. What it really is... I mean down to
the last gnats ass can only be determined with some very costly testing. But
I'll bet it's damned close to what he is claiming....
Just my 2 cents, all hear-say, and take that for what it is worth.
Mark Bitterlich
________________________________
From: owner-yak-list-server@matronics.com on behalf of Terry Calloway
Sent: Fri 4/23/2010 12:22 PM
Subject: Re: Yak-List: Re: 440 hp Super CJ for sale
Barry,
I would have to disagree with Bill on this one.
Most likely his over simplification of the equation Exhaust = Horsepower is based
on the automobile. In that the automobile the exhaust pipe is too small or
the muffler has a lot of air resistance then this can cause back-pressure. Dramatic
changes of the above can result in substantial increases in horsepower
like 10%.
None of this exist on the stock Russian exhaust. High-performance exhaust systems
use headers, big tail pipes and free-flowing mufflers to eliminate back-pressure
in the exhaust system and with the exception of the muffler it is probably
already fairly efficient.
Just my own opinion but I would have a very hard time believing you could bolt
on 40 more horsepower that easily. Most likely the equation was a transcription
error from the Dollars = Horsepower equation. :)
I will leave it at that and hope some of you engineers out there will chime in.
George are you listening?
Pumper
ps Yet another time I find myself missing Deno.
On Apr 23, 2010, at 10:53 AM, barryhancock wrote:
According to Bill Blackwell, the exhaust is good for 10% increase in horsepower,
thus the 400hp x 10% = 440 hp.
Message 18
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| Subject: | Re: 440 hp Super CJ for sale |
I also forgot to mention a few more things.
Some of the other mods being done include replacing the Russian pistons with high
quality American made forged aluminum racing pistons with a slightly higher
compression ratio and gapless rings. Also mods to the cylinder with valve replacements,
three angle valve jobs, valve seals, etc. These are all very well
known and very valid modifications made to a variety of racing engines.
I have no idea if any of these other mods were made to the engine in question or
not. However, I personally saw the result of some piston and cylinder mods
made to a M-14 PF engine that was installed in a Sukhoi-31 belonging to Sergei
Boriak, and according to him, it produced significantly more power. How much
is open for debate. Heck, even the theory of raising the compression on a supercharged
engine in the first place is open for debate. What is clearly true
however, is that the Russian engines have a lot of blow-by on the rings, especially
as they get older, and the more mass the engine has to move around to
generate power, the more gets lost in the process. Same thing holds true with
friction losses. Doing the things Bill does will increase power.
So what I'd REALLY like to know is... just exactly what was done to this engine?
I've met Bill Blackwell and came away very very impressed. This gent is
QUITE capable and also a really nice guy to boot. It would be interesting to
know just how much was done to this particular engine. For example, I have
no doubt what-so-ever that Tom's YAK-50 is putting out 10% more than it started
with. No question of it.
Mark Bitterlich
________________________________
From: owner-yak-list-server@matronics.com on behalf of Bitterlich, Mark G CIV Det
Cherry Point, MALS-14 64E
Sent: Fri 4/23/2010 9:17 PM
Subject: RE: Yak-List: Re: 440 hp Super CJ for sale
I've tried to stay out of this discussion, but it is hard to.
Lots of things make power, but in the end it is a matter of fuel and air. Period.
Improving cylinder balance and flow efficiency will certainly increase horsepower.
I am sure this exhaust system goes a long way towards doing that.
However, simply bolting it on and getting 10% increase is impossible. IMPOSSIBLE.
Just not going to happen....
That said.....
If you then recurve the fuel flow, possibly re-jetting the carb, and then messing
with the timing on the engine to take advantage of the flow increase, then
10% power is indeed do-able.
Tom Johnson's YAK-50 has a custom made exhaust that is on the same lines as this
system. In talking to him some time back, he mentioned to me that Bill had
to re-time the engine and do a lot of tuning to the fuel system to make it all
work. That leads me to believe that Bill Blackwell IS INDEED doing a complete
re-tuning of the entire engine to take advantage of the improved exhaust. If
the timing is advanced, the fuel flow is increased, and the cylinders are equalized
and flowed better..... oh man, things can indeed happen!
Tom also backed up a lot of the work done with engine and prop THRUST tests. Not
a fully dynamic test by any means. That is very very hard to do, however...
those tests he showed me led me to believe that quite a substantial increase
was achieved. Exactly how much of an increase was made, was very hard to say.
Throwing a number out like "440 HP", is simply not going to be too accurate.
We tend to look at a number like that and expect it to be a measured value
and if it is not, then it must be total bull. There is a middle ground here.
The engines Bill are producing clearly have a horsepower increase. 10% is certainly
possible given what is being done. What it really is... I mean down to
the last gnats ass can only be determined with some very costly testing. But
I'll bet it's damned close to what he is claiming....
Just my 2 cents, all hear-say, and take that for what it is worth.
Mark Bitterlich
________________________________
From: owner-yak-list-server@matronics.com on behalf of Terry Calloway
Sent: Fri 4/23/2010 12:22 PM
Subject: Re: Yak-List: Re: 440 hp Super CJ for sale
Barry,
I would have to disagree with Bill on this one.
Most likely his over simplification of the equation Exhaust = Horsepower is based
on the automobile. In that the automobile the exhaust pipe is too small or
the muffler has a lot of air resistance then this can cause back-pressure. Dramatic
changes of the above can result in substantial increases in horsepower
like 10%.
None of this exist on the stock Russian exhaust. High-performance exhaust systems
use headers, big tail pipes and free-flowing mufflers to eliminate back-pressure
in the exhaust system and with the exception of the muffler it is probably
already fairly efficient.
Just my own opinion but I would have a very hard time believing you could bolt
on 40 more horsepower that easily. Most likely the equation was a transcription
error from the Dollars = Horsepower equation. :)
I will leave it at that and hope some of you engineers out there will chime in.
George are you listening?
Pumper
ps Yet another time I find myself missing Deno.
On Apr 23, 2010, at 10:53 AM, barryhancock wrote:
According to Bill Blackwell, the exhaust is good for 10% increase in horsepower,
thus the 400hp x 10% = 440 hp.
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G'Day,
Can someone please advise how to contact bill Blackwell on email.
Thanks and cheers,
Chris.
Chris Wise
GT Propellers Australia
__________________________________________________________
Tel. +61 415 195 095 Fax. +61 8 8326 7268
Email chris@gtpropellersaustralia.com.au
Website www.gtpropellersaustralia.com.au
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| Subject: | Re: 440 hp Super CJ for sale |
One easy way to measure the HP of an engine is to actually measure the thr
ust or pull of the engine. You actually measure the very configuration th
at is effecting your airplane. Simply tie the airplane to a tree. On the
line put in a scale to measure the pull.
I believe Bill has done this with a "Rino" scale, and has measured several
engine configurations from a standard M-14 360 to different supped up eng
ines.
Thrust is what actually effects your airplane. Whatever HP the engine put
s out does not nesserarly led to the same thrust in every instants.
Jim "Pappy" Goolsby
-----Original Message-----
From: Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E <mark.bitterlic
h@navy.mil>
Sent: Fri, Apr 23, 2010 9:44 pm
Subject: RE: Yak-List: Re: 440 hp Super CJ for sale
ALS-14 64E" <mark.bitterlich@navy.mil>
I also forgot to mention a few more things.
ome of the other mods being done include replacing the Russian pistons wit
h
igh quality American made forged aluminum racing pistons with a slightly
higher
ompression ratio and gapless rings. Also mods to the cylinder with valve
eplacements, three angle valve jobs, valve seals, etc. These are all ver
y
ell known and very valid modifications made to a variety of racing engines
.
have no idea if any of these other mods were made to the engine in questi
on or
ot. However, I personally saw the result of some piston and cylinder mods
made
o a M-14 PF engine that was installed in a Sukhoi-31 belonging to Sergei
oriak, and according to him, it produced significantly more power. How mu
ch is
pen for debate. Heck, even the theory of raising the compression on a
upercharged engine in the first place is open for debate. What is clearly
true
owever, is that the Russian engines have a lot of blow-by on the rings,
specially as they get older, and the more mass the engine has to move arou
nd to
enerate power, the more gets lost in the process. Same thing holds true
with
riction losses. Doing the things Bill does will increase power.
o what I'd REALLY like to know is... just exactly what was done to this
ngine? I've met Bill Blackwell and came away very very impressed. This
gent
s QUITE capable and also a really nice guy to boot. It would be interes
ting
o know just how much was done to this particular engine. For example, I
have
o doubt what-so-ever that Tom's YAK-50 is putting out 10% more than it sta
rted
ith. No question of it.
ark Bitterlich
________________________________
From: owner-yak-list-server@matronics.com on behalf of Bitterlich, Mark G
CIV
et Cherry Point, MALS-14 64E
ent: Fri 4/23/2010 9:17 PM
o: yak-list@matronics.com
ubject: RE: Yak-List: Re: 440 hp Super CJ for sale
ALS-14 64E" <mark.bitterlich@navy.mil>
I've tried to stay out of this discussion, but it is hard to.
Lots of things make power, but in the end it is a matter of fuel and air.
eriod. Improving cylinder balance and flow efficiency will certainly incr
ease
orsepower. I am sure this exhaust system goes a long way towards doing
that.
owever, simply bolting it on and getting 10% increase is impossible.
MPOSSIBLE. Just not going to happen....
That said.....
If you then recurve the fuel flow, possibly re-jetting the carb, and then
essing with the timing on the engine to take advantage of the flow increas
e,
hen 10% power is indeed do-able.
Tom Johnson's YAK-50 has a custom made exhaust that is on the same lines
as this
ystem. In talking to him some time back, he mentioned to me that Bill had
to
e-time the engine and do a lot of tuning to the fuel system to make it all
ork. That leads me to believe that Bill Blackwell IS INDEED doing a compl
ete
e-tuning of the entire engine to take advantage of the improved exhaust.
If
he timing is advanced, the fuel flow is increased, and the cylinders are
qualized and flowed better..... oh man, things can indeed happen!
Tom also backed up a lot of the work done with engine and prop THRUST test
s.
ot a fully dynamic test by any means. That is very very hard to do, howev
er...
hose tests he showed me led me to believe that quite a substantial increas
e was
chieved. Exactly how much of an increase was made, was very hard to say.
hrowing a number out like "440 HP", is simply not going to be too accurate
. We
end to look at a number like that and expect it to be a measured value and
if
t is not, then it must be total bull. There is a middle ground here. The
ngines Bill are producing clearly have a horsepower increase. 10% is cert
ainly
ossible given what is being done. What it really is... I mean down to the
last
nats ass can only be determined with some very costly testing. But I'll
bet
t's damned close to what he is claiming....
Just my 2 cents, all hear-say, and take that for what it is worth.
Mark Bitterlich
_______________________________
From: owner-yak-list-server@matronics.com on behalf of Terry Calloway
ent: Fri 4/23/2010 12:22 PM
o: yak-list@matronics.com
ubject: Re: Yak-List: Re: 440 hp Super CJ for sale
arry,
would have to disagree with Bill on this one.
Most likely his over simplification of the equation Exhaust = Horsepower
is
ased on the automobile. In that the automobile the exhaust pipe is too sm
all
r the muffler has a lot of air resistance then this can cause back-pressur
e.
ramatic changes of the above can result in substantial increases in horsep
ower
ike 10%.
one of this exist on the stock Russian exhaust. High-performance exhaust
ystems use headers, big tail pipes and free-flowing mufflers to eliminate
ack-pressure in the exhaust system and with the exception of the muffler
it is
robably already fairly efficient.
ust my own opinion but I would have a very hard time believing you could
bolt
n 40 more horsepower that easily. Most likely the equation was a transcri
ption
rror from the Dollars = Horsepower equation. :)
will leave it at that and hope some of you engineers out there will chime
in.
eorge are you listening?
umper
s Yet another time I find myself missing Deno.
n Apr 23, 2010, at 10:53 AM, barryhancock wrote:
arbirds.com>
According to Bill Blackwell, the exhaust is good for 10% increase
in
orsepower, thus the 400hp x 10% = 440 hp.
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There is only one way to measure power,and that is on a
proper,callibrated dynonometer,corrected for temprature and pressure.
Our engine partner in Hungary has developed a clever system of a
strain-gauge between engine and and prop which gives a continuous
read-out of torque,so easily convertable to power while the engine is
running-but only on the ground.
I'm happy to send photos to anyone interested in this.
We believe that it is accurate within 2%,when compared with dyno
readings,but rather more scientific than a belief that some modification
is worth 10%!!.
Thrust is fine to an extent,but can only give a relative figure since it
depends on the efficiency of the prop.
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
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