Today's Message Index:
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1. 05:12 AM - Re: M14P magneto (N395V)
2. 07:02 PM - Tight nuts? (cjpilot710@aol.com)
3. 08:13 PM - Re: Re: M14P magneto (Tom Elliott)
Message 1
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| Subject: | Re: M14P magneto |
barryhancock wrote:
> Thanks, Milt. Impressive performance numbers. Those CHT numbers are hot for
cruise. I'd expect them in the 310-340 range. Are your running LOP?
>
> A PF with the Airflow system should net some serious HP.
>
> What altitudes are you seeing those numbers at? Also, what does a typical climb
profile look like?
>
> With the single point fuel injection (throttle body) I cannot get it to go lean
of peak.
>
> I am seeing 380 deg F because that is where I lean to. It keeps me about 100deg
ROP (EGT) on the 1st cylinder to peak.
>
>
> Usually fly between 7 and 9000 feet. I have a problem with vapor lock above 10,000
feet that I need to resolve.
>
> Climb on a cool day at sea level, 1 passenger and 60 Gal fuel is 4000fpm+ with
2 pax full fuel(90gal) and some baggage it drops to 2500fpm.
>
> I will usually cruise climb at 130-140KTS at 35" and 2700RPM this gives about
1200fpm.
>
> I have no idea what the AFP adds to the horsepower.
>
> My only point of reference for performance is the factory prototype with the
360HP carbureted engine and I can walk away from them in every parameter.
>
> Empty weight is only 1640 pounds .
>
> Cruise speed is very weight sensitive fully loaded costs about 8KTS TAS.
>
> It has fairly high wing loading.
>
> I have added a fuel return line to the fuel system and encased the firewall forward
fuel lines in a blast tube to prevent the vapor lock and am in the process
of extending the wings 3 feet for better high altitude performance and hopefully
decreasing the speed sensitivity to weight.
> Regards,
>
> Barry
--------
Milt
2003 F1 Rocket
2006 Radial Rocket
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Message 2
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Interesting stuff to my friends that turn a wrench!
Machinist's Workshop magazine actually tested penetrants for break out
torque on rusted nuts. Significant results! They are below, as forwarded by
an ex-student and professional machinist, Bud Baker.
*Don't forget the April 2007 "Machinist's Workshop" magazine comparison
test.*
*They arranged a subjective test of all the popular penetrants with the
control being the torque required to remove the nut from a "scientifically
rusted" environment. *
Penetrating oil ..... Average load*
None ............ ......... 516 pounds
WD-40 ............ ...... 238 pounds
PB Blaster ............ . 214 pounds
Liquid Wrench ..... 127 pounds
Kano Kroil ............ 106 pounds
ATF-Acetone mix....53 pounds
*The ATF-Acetone mix was a "home brew" mix of 50 - 50 automatic
transmission fluid and acetone.*
*Note the "home brew" was better than any commercial product in this one
particular test. Our local machinist group mixed up a batch and we all
now use it with equally good results. Note also that "Liquid Wrench" is
about as good as "Kroil" for about 20% of the price. *
*Your experience may vary, etc., etc.
**************Shop Popular Dell Laptops now starting at $349!
bleclick.net%2Fclk%3B215910283%3B38350812%3Ba)
Message 3
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| Subject: | Re: M14P magneto |
WHY?, Why would it be bad to have one plug fire at the correct angle before
TDC and another in the same cyl fire
retarded ( late ) the only effect would be a small power / efficiency loss
and would be possibly not noticeable
as Pappy who has done this in real life has stated. Also you would run with
one OFF ???? so when if you needed
the other MAG and plugs they would very likely be fouled!
I think all of your arm chair B/S on the dire consequences of doing this
should stop and defer to those who have
been there and done it!
Note I have personally seen Chinese mags on a fuel injected M14P and have
flown that plane. Note all centrifugal
advance Ing systems become FIXED timing when they reach there top RPM. Also
I have more time on a SUN
DISTRU-O-SCOPE that I care to remember.
Tom Elliott
CJ-6A NX63727
702-595-2680
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G
CIV Det Cherry Point, MALS-14 64E
Sent: Tuesday, June 23, 2009 11:17 AM
Subject: RE: Yak-List: Re: M14P magneto
--> Point, MALS-14 64E" <mark.bitterlich@navy.mil>
Pappy, is this a case where the Chinese Mag had a spark advance mechanism
and used variable spark timing, and the other one (The M9) ran FIXED spark
timing?
I am not sure if that is the case or not. I know that some of these mags
run variable timing and some run fixed. Running two variables, or running
two fixed would be fine, but running an engine with one that has variable
spark timing and one that has fixed spark timing would allow the engine to
have the plugs firing at two different times in the same cylinder and that
would be a bad thing.
This actually happened with one M-14PF leading to a really difficult to
diagnose high performance problem at full throttle. Turned out to be a
mixed mag problem like described above.
Not being familiar with the Chinese mags at all, I do not know which type of
operation they use honestly. If they are fixed timing mags with just a
slightly different adjustment procedure, then heck yes... No problem mixing
them with Russian mags. But if one is a variable timing mag, and one is a
fixed timing mag, that would not be a good thing to do other than maybe in a
"GET IT HOME" kind of emergency... And to be honest if I did that, I would
fly it on one or the other mag during the flight home and not on BOTH.
Just my 2 cents,
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of cjpilot710@aol.com
Sent: Monday, June 22, 2009 6:49 PM
Subject: Re: Yak-List: Re: M14P magneto
In a message dated 6/22/2009 6:31:23 P.M. Eastern Daylight Time,
wise@txc.net.au writes:
Chris,
You know you can use a mag off the HS-6 Chinese engine, if you can fine one.
You time it a little differently. At one point I ran my M-14p with one
Russian mag and one Chinese mag. Worked fine, until I was able to get one
Russian mag back from overhauled. At one point I ran the
M-14 on just Chinese mags. I honestly could not tell the difference.
Jim "Pappy" Goolsby
G'Day Milt,
Thanks for sendingme the link to Steve Culp's site.
I had already looked there and his Mag is dearer than all others.
I notice that you sign off with radial rocket.
A number of years back I was extremely interested in building one and
sent
emails to the advertised site with never a reply.
Man, they look to be a awesome ship.
Thanks and cheers,
Chris.
----- Original Message -----
From: "N395V" <Bearcat@bearcataviation.com>
To: <yak-list@matronics.com>
Sent: Monday, June 22, 2009 11:24 PM
Subject: Yak-List: Re: M14P magneto
<Bearcat@bearcataviation.com>
>
> Look here
>
>
http://cgi.ebay.com/ebaymotors/M-14P-M9F-Mag-Radial-Russian_W0QQcmdZView
ItemQQ_trkparmsZQ7c301Q3a0Q7c293Q3a8Q7c294Q3a30QQ_trksidZp4634Q2ec0Q2em1
4Q2el1262QQhashZitem1c049d394eQQitemZ120336496974QQptZMotorsQ5fAviationQ
5fPartsQ5fGear
>
> --------
> Milt
> 2003 F1 Rocket
> 2006 Radial Rocket
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=249511#249511
>
>
>
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