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byronmfox(at)gmail.com Guest
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Posted: Sun Jul 19, 2009 8:38 am Post subject: Housai to M14P Conversion |
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New partner, Brian Neunzig, and I are planning to hang an M14P and MT prop on our CJ come October. Since sharing that news with friends, I've been accused by some of going over to the dark side.
M14P horror stories abound. "Burns a quart of oil or more an hour." "Gets its 360 hp by turning at 2900 rpm instead of 2350. Eats up the engine and TBOs at 500 hours." "Burns a lot more gas." "Climbs better with the MT, but no faster in cruise." "So, you want to spend $50K for marginal improvement?" "Blitz, I know you're now 70, but is something wrong with your prostate that you need a three-bladed prop to feel like a man?"
You get the drift. So, we'd enjoy hearing from those who have flown behind both engines. Try, try to be objective.
Many thanks, Blitz
--
Byron M. Fox
80 Milland Drive
Mill Valley, CA 94941
415-307-2405
[quote][b]
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N13472(at)aol.com Guest
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Posted: Sun Jul 19, 2009 10:11 am Post subject: Housai to M14P Conversion |
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You get the drift. So, we'd enjoy hearing from those who have flown behind both engines. Try, try to be objective.
Many thanks, Blitz
Objective? Your asking a pilot to be objective about their favorite mistress? Good luck on that Eh!
Tom Elliott
CJ-6A NX63727
702-595-2680
[quote] From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Byron Fox
Sent: Sunday, July 19, 2009 9:33 AM
To: Yak LIst
Subject: Housai to M14P Conversion
New partner, Brian Neunzig, and I are planning to hang an M14P and MT prop on our CJ come October. Since sharing that news with friends, I've been accused by some of going over to the dark side.
M14P horror stories abound. "Burns a quart of oil or more an hour." "Gets its 360 hp by turning at 2900 rpm instead of 2350. Eats up the engine and TBOs at 500 hours." "Burns a lot more gas." "Climbs better with the MT, but no faster in cruise." "So, you want to spend $50K for marginal improvement?" "Blitz, I know you're now 70, but is something wrong with your prostate that you need a three-bladed prop to feel like a man?"
You get the drift. So, we'd enjoy hearing from those who have flown behind both engines. Try, try to be objective.
Many thanks, Blitz
--
Byron M. Fox
80 Milland Drive
Mill Valley, CA 94941
415-307-2405
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JOE HOWSE
Joined: 10 Jan 2006 Posts: 140 Location: DUNCAN BC CANADA
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Posted: Sun Jul 19, 2009 10:20 am Post subject: Housai to M14P Conversion |
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Blitz
I ran the M14P conversion on my CJ6, has the extra oomph if you wnt to use it, flying off our short home strip it was no problem on hot
days or bad wind conditions, nice to have the extra speed available in the right condions. much smoother with the 3 blade prop than the 2 blade original.
Joe
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dandmaz(at)cox.net Guest
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Posted: Sun Jul 19, 2009 10:36 am Post subject: Housai to M14P Conversion |
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Hi BLitz,
You are a wise man at seventy, on the dark side you will find this; I have over one thousand hours on my CJ-6 powered by a MP-14 on my last annual compression check 77/80 this years flight to All Redstar KDVT to L26 leg with SIX CJ-6s (three CJ6-A/three CJ-6P) two hour flight oil burn 1/2 quart per hour fuel used 28.5 gals at 68% power. The CJ-6As turned 2100 RPM to stay up and burned more fuel and oil. Of course we could have increased our power a little maybe 72/74 % and left the C6-As behind, that's what the dark side would do, but we pulled the power way back so we all could stay together.
Don
Stormy
[quote] From: Byron Fox (byronmfox(at)gmail.com)
To: Yak LIst (yak-list(at)matronics.com)
Sent: Sunday, July 19, 2009 9:33 AM
Subject: Housai to M14P Conversion
New partner, Brian Neunzig, and I are planning to hang an M14P and MT prop on our CJ come October. Since sharing that news with friends, I've been accused by some of going over to the dark side.
M14P horror stories abound. "Burns a quart of oil or more an hour." "Gets its 360 hp by turning at 2900 rpm instead of 2350. Eats up the engine and TBOs at 500 hours." "Burns a lot more gas." "Climbs better with the MT, but no faster in cruise." "So, you want to spend $50K for marginal improvement?" "Blitz, I know you're now 70, but is something wrong with your prostate that you need a three-bladed prop to feel like a man?"
You get the drift. So, we'd enjoy hearing from those who have flown behind both engines. Try, try to be objective.
Many thanks, Blitz
--
Byron M. Fox
80 Milland Drive
Mill Valley, CA 94941
415-307-2405
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dsavarese0812(at)bellsout Guest
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Posted: Sun Jul 19, 2009 1:13 pm Post subject: Housai to M14P Conversion |
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And how many horsepower does the Housai develop at 2350? 285, right? Now divide 2350 by 2900. What percent is that? 81%. Now multiply that percent times 360. What horsepower is that? 291 horsepower to be exact. Hummmm....aren't they amazingly close? Same cubic inches. 620 cu. in. Only 1/10 point difference in compression ratio too. Specific fuel consumption for both stock engines at the same power settings is going to be pretty darn close. It's the nature of the beast, unless of course there are custom modifications to the engines.
Propellers do make a difference. Put a pair of Chinese prop blades into a Russian hub, (the blades are interchangeable with the Russian paddle prop blades). Then go fly a specified test plan at the same percent of power (Housai 285 and M14P powered CJ6) and document the results. I'm sure everyone on the list would be interested in the results.
I think some of the folks on the list thinking of making the change will have difficulty justifying the 50K upgrade, particularly after the results are posted.
Dennis
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cd001633(at)mindspring.co Guest
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Posted: Sun Jul 19, 2009 2:44 pm Post subject: Housai to M14P Conversion |
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Blitz,
Does any of your nay sayer advisors own an M-14P power CJ??
Regarding higher consumption of oil/fuel - do these wise aviators experts actually expect less fuel/oil for the additional horse power...??
The
M-14 for the CJ is like viagra - no matter how young/old we are we
always enjoy the extra oomph... The M-14P gives it too
Climb
performance improves dramatically and cruise improves substantially
also (nothing marginal here). The 3 blades adds to the climb/cruise
performance as well. I have been flying mine with a 3 bladed Whirlwind
prop - and I love it. MT is a great choice.
To many of us, the
only substitute to power is MORE power!!! You've got the 50 Gs - go
have fun with it, you will not regret it!!! - these are my 2 cents
opinion...
Sam Sax
Miami
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byronmfox(at)gmail.com Guest
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Posted: Sun Jul 19, 2009 3:08 pm Post subject: Housai to M14P Conversion |
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Many thanks, Sam. Well said, and no, all the detractors are Housai
folks. ...Blitz
Sent from my iPhone
On Jul 19, 2009, at 3:43 PM, Sam Sax <cd001633(at)mindspring.com> wrote:
Quote: |
Blitz,
Does any of your nay sayer advisors own an M-14P power CJ??
Regarding higher consumption of oil/fuel - do these wise aviators
experts actually expect less fuel/oil for the additional horse
power...??
The
M-14 for the CJ is like viagra - no matter how young/old we are we
always enjoy the extra oomph... The M-14P gives it too
Climb
performance improves dramatically and cruise improves substantially
also (nothing marginal here). The 3 blades adds to the climb/cruise
performance as well. I have been flying mine with a 3 bladed
Whirlwind
prop - and I love it. MT is a great choice.
To many of us, the
only substitute to power is MORE power!!! You've got the 50 Gs -
go
have fun with it, you will not regret it!!! - these are my 2 cents
opinion...
Sam Sax
Miami
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viperdoc(at)mindspring.co Guest
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Posted: Sun Jul 19, 2009 4:12 pm Post subject: Housai to M14P Conversion |
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Blitz,
Come on over to the Dark Side. You gonna love the M-14!
Doc
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k7wx(at)earthlink.net Guest
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Posted: Sun Jul 19, 2009 4:13 pm Post subject: Housai to M14P Conversion |
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Byron,
Just bought a 1983 CJ-6A that came with a low time Housai-6 and prop
only recently out of the box from China. Before that, I had the
pleasure of doing some initial training in one with the larger M14 and
a two blade prop. I think that I can be objective.
My take as someone new to this airplane is that there is a significant
difference between the two engines, especially during vertical
maneuvers. Climb rate and speed are way better with the M14. With the
Housai, the CJ is a docile, lovely aerobatic airplane that is a
delight to fly, but I wish it had a better climb rate. The M14 I flew
several weeks ago was a noticeably more powerful platform.
When I can afford it, in several years I'll probably be hanging a M14.
Warren Hill
Mesa, AZ
On Jul 19, 2009, at 9:33 AM, Byron Fox wrote:
Quote: | New partner, Brian Neunzig, and I are planning to hang an M14P and
MT prop on our CJ come October. Since sharing that news with
friends, I've been accused by some of going over to the dark side.
M14P horror stories abound. "Burns a quart of oil or more an hour."
"Gets its 360 hp by turning at 2900 rpm instead of 2350. Eats up the
engine and TBOs at 500 hours." "Burns a lot more gas." "Climbs
better with the MT, but no faster in cruise." "So, you want to spend
$50K for marginal improvement?" "Blitz, I know you're now 70, but is
something wrong with your prostate that you need a three-bladed prop
to feel like a man?"
You get the drift. So, we'd enjoy hearing from those who have flown
behind both engines. Try, try to be objective.
Many thanks, Blitz
--
Byron M. Fox
80 Milland Drive
Mill Valley, CA 94941
415-307-2405
|
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Dabear(at)damned.org Guest
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Posted: Sun Jul 19, 2009 4:14 pm Post subject: Housai to M14P Conversion |
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Blitz or FOP (Father of Potus)
I have the M14P (stock engine) and the MT Prop. I have 400 hours on the engine, 400 hours on the CJ with the 285.
Pro's
Increased Cruise speed - not dramatic, but 5-10kts
Increased Climb Rate - DRAMATIC with the MT prop
Increased climb out of short fields
Instant seat of the pants trust
Flying cross country loose formation with other CJs or Yak-52s, I have to throttle so far back I'm burning 11-11.5 Gal/hour
With MT Prop, smoother running engine,
Con's
Cost of Conversion
SLIGHT increase in fuel consumption (but then again, I have more HP - no free lunch)
Other Thoughts
I burn/leak/blow out a little less than a litter an hour of oil, but then again, my Housai lost the same or a little more.
I did the conversion when I needed to replace the housai. I would NEVER go back to the Housai/285hp. If I had to replace my CJ, it would be with another M14P powered CJ.
The 50k you mention really isn't the cost of the upgrade. If you subtract what a housai engine would cost (18-20k), the cost of the upgrade is really only 25-30k.
I don't think you'd be dispointed. But give me a call if you want to talk further.
DaBear
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byronmfox(at)gmail.com Guest
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Posted: Sun Jul 19, 2009 4:39 pm Post subject: Housai to M14P Conversion |
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Many thanks, Bear. Solid comments. ...B
Sent from my iPhone
On Jul 19, 2009, at 5:14 PM, "dabear" <Dabear(at)damned.org (Dabear(at)damned.org)> wrote:
[quote] Blitz or FOP (Father of Potus)
I have the M14P (stock engine) and the MT Prop. I have 400 hours on the engine, 400 hours on the CJ with the 285.
Pro's
Increased Cruise speed - not dramatic, but 5-10kts
Increased Climb Rate - DRAMATIC with the MT prop
Increased climb out of short fields
Instant seat of the pants trust
Flying cross country loose formation with other CJs or Yak-52s, I have to throttle so far back I'm burning 11-11.5 Gal/hour
With MT Prop, smoother running engine,
Con's
Cost of Conversion
SLIGHT increase in fuel consumption (but then again, I have more HP - no free lunch)
Other Thoughts
I burn/leak/blow out a little less than a litter an hour of oil, but then again, my Housai lost the same or a little more.
I did the conversion when I needed to replace the housai. I would NEVER go back to the Housai/285hp. If I had to replace my CJ, it would be with another M14P powered CJ.
The 50k you mention really isn't the cost of the upgrade. If you subtract what a housai engine would cost (18-20k), the cost of the upgrade is really only 25-30k.
I don't think you'd be dispointed. But give me a call if you want to talk further.
DaBear
[quote] ---
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byronmfox(at)gmail.com Guest
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Posted: Sun Jul 19, 2009 4:41 pm Post subject: Housai to M14P Conversion |
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Many thanks, Warren. ...Blitz
Sent from my iPhone
On Jul 19, 2009, at 5:12 PM, Warren Hill <k7wx(at)earthlink.net> wrote:
Quote: |
Byron,
Just bought a 1983 CJ-6A that came with a low time Housai-6 and prop
only recently out of the box from China. Before that, I had the
pleasure of doing some initial training in one with the larger M14
and a two blade prop. I think that I can be objective.
My take as someone new to this airplane is that there is a
significant difference between the two engines, especially during
vertical maneuvers. Climb rate and speed are way better with the
M14. With the Housai, the CJ is a docile, lovely aerobatic airplane
that is a delight to fly, but I wish it had a better climb rate. The
M14 I flew several weeks ago was a noticeably more powerful platform.
When I can afford it, in several years I'll probably be hanging a M14.
Warren Hill
Mesa, AZ
On Jul 19, 2009, at 9:33 AM, Byron Fox wrote:
> New partner, Brian Neunzig, and I are planning to hang an M14P and
> MT prop on our CJ come October. Since sharing that news with
> friends, I've been accused by some of going over to the dark side.
>
> M14P horror stories abound. "Burns a quart of oil or more an hour."
> "Gets its 360 hp by turning at 2900 rpm instead of 2350. Eats up
> the engine and TBOs at 500 hours." "Burns a lot more gas." "Climbs
> better with the MT, but no faster in cruise." "So, you want to
> spend $50K for marginal improvement?" "Blitz, I know you're now 70,
> but is something wrong with your prostate that you need a three-
> bladed prop to feel like a man?"
>
> You get the drift. So, we'd enjoy hearing from those who have flown
> behind both engines. Try, try to be objective.
>
> Many thanks, Blitz
>
> --
> Byron M. Fox
> 80 Milland Drive
> Mill Valley, CA 94941
> 415-307-2405
>
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KingCJ6(at)aol.com Guest
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Posted: Sun Jul 19, 2009 4:55 pm Post subject: Housai to M14P Conversion |
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If Blitz has 900 hours on the Housai, it still has great compression and Doug believes it will go to 2,000 hours if well maintained, this is simply a digressionary upgrade, not a necessary replacement.
Undeniably the conversion will provide a significant increase in climb capability, but when you operate out of Petaluma at 87" MSL, this benefit is of marginal usefulness.
From a cruse speed perspective, most note a 5-10 kt increase, maybe more/maybe less. Assume a 10 kt increase - that's $5,000/kt increase, and if the new President's planned tax increase passes, you's need to earn and save about $8,000 for each increased knot. A good wax job and tune-up will probably give you a knot or two for substantially less!
If supplemental stimulus or TARP funds are available, why not...if not?
Dave
In a message dated 7/19/2009 5:15:20 P.M. Pacific Daylight Time, Dabear(at)damned.org writes:
Quote: | The 50k you mention really isn't the cost of the upgrade. If you subtract what a housai engine would cost (18-20k), the cost of the upgrade is really only 25-30k. |
An0126575x1222585099x1201462822/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62%26bcd=JulyExcfooterNO62>See Yours in Just 2 Easy Steps!
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barryhancock
Joined: 09 Oct 2008 Posts: 285
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Posted: Mon Jul 20, 2009 7:09 am Post subject: Housai to M14P Conversion |
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Gang,
I have a bunch of time behind both engines. Lots of good info so far,
and the consensus seems pretty solidly in favor of the M14P - which I
agree with. The M14P with a 3-bladed prop (choose your flavor) is
going to double, yes double, your initial climb rate from approx. 1200
fpm to 2200-2500 fpm. However, I wouldn't count on 5-10 knots extra
in cruise based on the same fuel consumption. Additionally, 5 knots
over a two hour flight is good for about 4 minutes, if Uncle Math is
correct.
That being said here are the other practical differences and
similarities between the two engines that I would factor in to a
decision on upgrading:
-TBO will be approximately the same. Spend the extra money and get a
zero time, first overhaul. Make sure the overhaul comes from a
reputable facility.
-Oil consumption is roughly the same. The Housai runs just fine on
20/50 or 50W, the M14P really requires 25/60 or 60W.
-Support for the M14P is better (more sources for parts, more engines
in operation, etc.)
-Domestic overhaul facilities are gearing up to support the M14P,
which has yet to happen with the Housai. No one provides complete OH
services for the M14P yet, but there is more than one reputable shop
moving in that direction.
Performance differences that I think are important to consider are:
-the added climb performance of the "P" gives an added safety margin
-the added drag of the 3 blade decreases your glide distance and
engine out options (there's a price to pay for any design, right?)
-that same climb performance translates into a much more capable
aerobatic platform. You can do vertical maneuvers with the "P" and
gain altitude....try that with the Housai.
-Greater position keeping ability in more aggressive formation flying
or on the outside in larger formations. Both the added thrust and
extra breaking power are a nice advantage.
All of this being said, the Housai is a great engine and is adequate
for most flying. I, however, like the M14P for the added safety of
the higher climb rate, better support, better acro capability, sweeter
sound, and better looks (the latter two being subjective).
Incidentally, I've written a "CJ-6 Pilot Report" that is on our web
site. It needs a little refinement still, but some of you may find it
interesting. If you find any typos or misinformation, I'd be happy to
hear about it off list.
http://www.worldwidewarbirds.com/pdfs/CJ6_Pilot_Report.pdf
Hope this helps!
Barry Hancock
Worldwide Warbirds, Inc.
(909) 606-4444 office
(949) 300-5510 cell
www.worldwidewarbirds.com
"Making your warbird dreams a reality!"
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_________________ Barry Hancock
Worldwide Warbirds, Inc.
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terrycalloway(at)mac.com Guest
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Posted: Mon Jul 20, 2009 8:10 am Post subject: Housai to M14P Conversion |
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Some additional comments on Barry's response.
Quote: | -Oil consumption is roughly the same. The Housai runs just fine on
20/50 or 50W, the M14P really requires 25/60 or 60W.
|
**** Not with total seal oil rings. My M-14 uses around 1 quart every
5 hours.
Quote: | -Domestic overhaul facilities are gearing up to support the M14P,
which has yet to happen with the Housai. No one provides complete
OH services for the M14P yet, but there is more than one reputable
shop moving in that direction.
|
**** Barrett Precision Engines in Tulsa, Oklahoma is completely
rebuilding engines. The only thing they have not completed is their
Dyno. They did my engine for exactly what they quoted me also. I
recommend Avcraft in Nebraska for the install. They did my install in
budget and ON TIME.
Quote: | -Greater position keeping ability in more aggressive formation
flying or on the outside in larger formations. Both the added
thrust and extra breaking power are a nice advantage.
|
**** This can be a disadvantage to the wingman because of the braking
effect of the prop. So the M-14 driver needs to be smooth.
Good luck Blitz!
Pumper
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ChangDriver
Joined: 15 Sep 2007 Posts: 266
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Posted: Tue Jul 21, 2009 6:28 am Post subject: Re: Housai to M14P Conversion |
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Blitz:
All good comments so far. The one thing you need to decide is how you will fly your CJ. If acro and vertical penetration are important, the M-14P (or PF) may be what you want. If you are going to fly "gentleman acro" and fly to/from formation events, the Housai is going to be sufficient. If you live at altitude, the M-14 would be the better choice for the air you fly in.
As for additional cruise, I doubt there is much. Pappy reports about 5 knots and he has lots of M-14 CJ time. My guess is that a good portion of that comes from the spinner on the plane too as it creates better airflow.
Look at the Pitts. there are guys (and gals) flying them with fixed props, constant props, big engines, little engines, and tricked out engines.
I've had the opportunity to fly CAP 182s with stock motors (235 HP and two blades) and the P Ponk converted 182 (265 HP and three blade prop). The difference is noticeable in climb and short field performance and that is about it (oh yes, CHT gets hotter faster, real fast). It is a nice kick in the butt and I even had a tower controller ask me what kind of 182 I was flying to take-off in such a short distance and climb like the plane did.
The nice part is that everyone likes the engine choice they have made. Both are good capable engines.
It is your $50K or so, decide how you fly and if the extra $$ is worth it.
Cheers,
Craig W
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mark.bitterlich(at)navy.m Guest
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Posted: Tue Jul 21, 2009 7:20 am Post subject: Housai to M14P Conversion |
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Interesting conversation!
Boils down to whether you want to restore your 1968 Camaro with the
original straight six, which is plenty good enough to get you to and
from the grocery store, or squeeze in a 502 cu in. fire breathing, tire
screeching, big block developing over 650 horsepower!
In the car world we have a saying: "Speed costs money. How fast do you
want to go?"
I think there might be a cross-over to airplanes!
Blitz, stop looking at your wallet and start looking in the mirror. Who
you are and what you want out of life is, in the end, the most important
factor in this decision. All the rest is just "logical justification"
for a decision which I suspect you already have made, or darn well WANT
to make!
Good luck,
Mark Bitterlich
--
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byronmfox(at)gmail.com Guest
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Posted: Tue Jul 21, 2009 9:19 am Post subject: Housai to M14P Conversion |
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Mark, truer words were never spoken. You can be my therapist
anytime. ...Blitz
Sent from my iPhone
On Jul 21, 2009, at 8:13 AM, "Bitterlich, Mark G CIV Det Cherry Point,
MALS-14 64E" <mark.bitterlich(at)navy.mil> wrote:
[quote]
Point, MALS-14 64E" <mark.bitterlich(at)navy.mil>
Interesting conversation!
Boils down to whether you want to restore your 1968 Camaro with the
original straight six, which is plenty good enough to get you to and
from the grocery store, or squeeze in a 502 cu in. fire breathing,
tire
screeching, big block developing over 650 horsepower!
In the car world we have a saying: "Speed costs money. How fast do
you
want to go?"
I think there might be a cross-over to airplanes!
Blitz, stop looking at your wallet and start looking in the mirror.
Who
you are and what you want out of life is, in the end, the most
important
factor in this decision. All the rest is just "logical justification"
for a decision which I suspect you already have made, or darn well
WANT
to make!
Good luck,
Mark Bitterlich
--
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dsavarese0812(at)bellsout Guest
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terrycalloway(at)mac.com Guest
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Posted: Tue Jul 21, 2009 12:09 pm Post subject: Housai to M14P Conversion |
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Wait! Wait! Don't think of using that excuse.
That does not work. Too much damage to repair after her next reply which will be something like this...
"Well then maybe you should sell it."
Pumper
On Jul 21, 2009, at 2:08 PM, A. Dennis Savarese wrote:
Quote: | Just tell your wife it is a "safety issue". That's why you have to spend the money. )
Dennis
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