Today's Message Index:
----------------------
1. 07:57 AM - Mag Mystery Continues (Jon.Boede@corp.terralycos.com)
2. 12:58 PM - Re: Mag Mystery Continues (Lee Taylor)
3. 03:10 PM - Re: Mag Mystery Continues (Jon.Boede@corp.terralycos.com)
4. 04:52 PM - Re: Mag Mystery Continues (ron wasson)
5. 07:05 PM - Re: Mag Mystery Continues (Frank Haertlein)
6. 08:02 PM - Parachutes (Alan Cockrell)
7. 08:13 PM - Re: Parachutes (Frank Haertlein)
8. 09:23 PM - Re: Parachutes (Stuart Mackereth)
9. 09:27 PM - Re: Parachutes (Lee Taylor)
Message 1
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Mag Mystery Continues |
08/24/2003 10:56:54 AM
--> Yak-List message posted by: Jon.Boede@corp.terralycos.com
Just when I was pretty sure that I owed Dennis a case of beer, the plot
thickened. :-)
In trying to correct my mag drops on my CJ, I've already run it up with the
#1 p-lead disconnected, replaced the #1 coil and high voltage rod, and
filled the wiring harness with two cans of WD-40, and even said a little
prayer.
Things may have improved a little but I'm still experiencing disconcerting
drops. Here's what happens.
I take the CJ (stock 285hp engine) out to the runup area on a field that's
about 100' MSL and it idles nicely and it runs up good.
If I let it run for a while (like 15 minutes) and get it warm (oil at 60+C
cylinders at 140+C) I start to get 100-200rpm drops when I have the mags
set to "1". It ALSO does it on "2" but *much* less often.
It seems to have something to do with temperature. It doesn't start to do
it until it's detected that I'm pretty sure that the problem is fixed, no
no, that's not it... no it doesn't do it until it's good and warm. If I
open the cowl shutters and get it cool back to 120C it doesn't seem to
start having the problem again until 150C or better. It's hard to say if
it's a function of oil temp. or of cylinder temp... although at 40C oil and
170C cylinder was the situation where it was running fine and I thought it
was fixed... until the oil came up to over 60C.
It will run at 1800rpm on "1" for a while and then the engine will say
"SKIT!" and I'll get a drop, it will run for 5-10 seconds and say "SKIT!"
again and drop.
** I can correct the problem by going back to 1+2. I have yet to see it
drop out on 1+2 -- excepting for the one drop I got last week coming into
the pattern... which is why I hesitate to take it into the air again.
It seems to have something to do with power setting. If I leave it on "1"
it hasn't dropped out at 1500rpm ... it seems to drop out more at 2000rpm.
It may have a little to do with mixture setting... if I push the mixture up
to match the throttle at 1800rpm it seems to take longer for the problem to
show up. Once it does, mixture doesn't seem to correct it.
I'm running out of bright ideas... any suggestions?
Jon
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Mag Mystery Continues |
--> Yak-List message posted by: "Lee Taylor " <leetay1@idcomm.com>
Jon,
This is way out in left field, but have you considered the
possibility of carb ice?
Lee Taylor
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of
Jon.Boede@corp.terralycos.com
Subject: Yak-List: Mag Mystery Continues
--> Yak-List message posted by: Jon.Boede@corp.terralycos.com
Just when I was pretty sure that I owed Dennis a case of beer, the plot
thickened. :-)
In trying to correct my mag drops on my CJ, I've already run it up with
the
#1 p-lead disconnected, replaced the #1 coil and high voltage rod, and
filled the wiring harness with two cans of WD-40, and even said a little
prayer.
Things may have improved a little but I'm still experiencing
disconcerting
drops. Here's what happens.
I take the CJ (stock 285hp engine) out to the runup area on a field
that's
about 100' MSL and it idles nicely and it runs up good.
If I let it run for a while (like 15 minutes) and get it warm (oil at
60+C
cylinders at 140+C) I start to get 100-200rpm drops when I have the mags
set to "1". It ALSO does it on "2" but *much* less often.
It seems to have something to do with temperature. It doesn't start to
do
it until it's detected that I'm pretty sure that the problem is fixed,
no
no, that's not it... no it doesn't do it until it's good and warm. If I
open the cowl shutters and get it cool back to 120C it doesn't seem to
start having the problem again until 150C or better. It's hard to say
if
it's a function of oil temp. or of cylinder temp... although at 40C oil
and
170C cylinder was the situation where it was running fine and I thought
it
was fixed... until the oil came up to over 60C.
It will run at 1800rpm on "1" for a while and then the engine will say
"SKIT!" and I'll get a drop, it will run for 5-10 seconds and say
"SKIT!"
again and drop.
** I can correct the problem by going back to 1+2. I have yet to see it
drop out on 1+2 -- excepting for the one drop I got last week coming
into
the pattern... which is why I hesitate to take it into the air again.
It seems to have something to do with power setting. If I leave it on
"1"
it hasn't dropped out at 1500rpm ... it seems to drop out more at
2000rpm.
It may have a little to do with mixture setting... if I push the mixture
up
to match the throttle at 1800rpm it seems to take longer for the problem
to
show up. Once it does, mixture doesn't seem to correct it.
I'm running out of bright ideas... any suggestions?
Jon
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Mag Mystery Continues |
08/24/2003 06:10:13 PM
--> Yak-List message posted by: Jon.Boede@corp.terralycos.com
The strange bit is that when I put it back on 1+2 that always seems to make
things work OK. It misses a bunch on "1", misses a little bit on "2", and
has never missed excepting for that one disconcerting burp in the pattern
on "1+2".
I swapped the rotors in the distributors... no luck.
A friend of mine suggested that I may simply have fouled plugs.... so I'm
going to go try and get the throttle shoved far enough forward on the
ground that I can bring the mixture up. Wheeeee. :-)
Jon
--> Yak-List message posted by: "Lee Taylor " <leetay1@idcomm.com>
Jon,
This is way out in left field, but have you considered the
possibility of carb ice?
Lee Taylor
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of
Jon.Boede@corp.terralycos.com
Subject: Yak-List: Mag Mystery Continues
--> Yak-List message posted by: Jon.Boede@corp.terralycos.com
Just when I was pretty sure that I owed Dennis a case of beer, the plot
thickened. :-)
In trying to correct my mag drops on my CJ, I've already run it up with
the
#1 p-lead disconnected, replaced the #1 coil and high voltage rod, and
filled the wiring harness with two cans of WD-40, and even said a little
prayer.
Things may have improved a little but I'm still experiencing
disconcerting
drops. Here's what happens.
I take the CJ (stock 285hp engine) out to the runup area on a field
that's
about 100' MSL and it idles nicely and it runs up good.
If I let it run for a while (like 15 minutes) and get it warm (oil at
60+C
cylinders at 140+C) I start to get 100-200rpm drops when I have the mags
set to "1". It ALSO does it on "2" but *much* less often.
It seems to have something to do with temperature. It doesn't start to
do
it until it's detected that I'm pretty sure that the problem is fixed,
no
no, that's not it... no it doesn't do it until it's good and warm. If I
open the cowl shutters and get it cool back to 120C it doesn't seem to
start having the problem again until 150C or better. It's hard to say
if
it's a function of oil temp. or of cylinder temp... although at 40C oil
and
170C cylinder was the situation where it was running fine and I thought
it
was fixed... until the oil came up to over 60C.
It will run at 1800rpm on "1" for a while and then the engine will say
"SKIT!" and I'll get a drop, it will run for 5-10 seconds and say
"SKIT!"
again and drop.
** I can correct the problem by going back to 1+2. I have yet to see it
drop out on 1+2 -- excepting for the one drop I got last week coming
into
the pattern... which is why I hesitate to take it into the air again.
It seems to have something to do with power setting. If I leave it on
"1"
it hasn't dropped out at 1500rpm ... it seems to drop out more at
2000rpm.
It may have a little to do with mixture setting... if I push the mixture
up
to match the throttle at 1800rpm it seems to take longer for the problem
to
show up. Once it does, mixture doesn't seem to correct it.
I'm running out of bright ideas... any suggestions?
Jon
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Mag Mystery Continues |
--> Yak-List message posted by: ron wasson <ronwasson@mindspring.com>
Check all the intakes are tight with the intake wrench even if safetied. A
airleak will cause the engine run lean. If you have intake drain hoses then
check it is closed. Lean mixture is hard to light and it runs better with
two mags trying to light it. I had that once and now check it on annual.
Fouled plugs is also the very first thing to check. Pull all the plugs,
clean and pressure test the spark. A piece of carbon is very hard to burn
out. The motor will miss at low power but run fine higher. Bottom front
plugs are the first to foul. A FBO will have a plug cleaner and Doug has the
intake wrench. If you think it is the mag then there is only one way to
know. Swap left to right or order a new one from Doug as a spare and to test
swap it. Make sure the mixture cable is connected. They have been known to
come loose at the ball on the carb. They look on but allow the arm to swing
to the lean stop and the engine will pop on acceleration.
Ron
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Mag Mystery Continues |
--> Yak-List message posted by: "Frank Haertlein" <yak52driver@earthlink.net>
Jon;
Clean, re-gap, and/or replace your plugs, clean your distributor caps of
any and all black deposits and replace "ALL" of your ignition wires with
modern, silicone covered wires and I'm willing to bet your problem goes
away. The "SKIT" you describe sounds like intermittent crossfire between
plug wires.
Frank
N9110M
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of
Jon.Boede@corp.terralycos.com
Subject: Yak-List: Mag Mystery Continues
--> Yak-List message posted by: Jon.Boede@corp.terralycos.com
Just when I was pretty sure that I owed Dennis a case of beer, the plot
thickened. :-)
In trying to correct my mag drops on my CJ, I've already run it up with
the #1 p-lead disconnected, replaced the #1 coil and high voltage rod,
and filled the wiring harness with two cans of WD-40, and even said a
little prayer.
Things may have improved a little but I'm still experiencing
disconcerting drops. Here's what happens.
I take the CJ (stock 285hp engine) out to the runup area on a field
that's about 100' MSL and it idles nicely and it runs up good.
If I let it run for a while (like 15 minutes) and get it warm (oil at
60+C cylinders at 140+C) I start to get 100-200rpm drops when I have the
mags set to "1". It ALSO does it on "2" but *much* less often.
It seems to have something to do with temperature. It doesn't start to
do it until it's detected that I'm pretty sure that the problem is
fixed, no no, that's not it... no it doesn't do it until it's good and
warm. If I open the cowl shutters and get it cool back to 120C it
doesn't seem to start having the problem again until 150C or better.
It's hard to say if it's a function of oil temp. or of cylinder temp...
although at 40C oil and 170C cylinder was the situation where it was
running fine and I thought it was fixed... until the oil came up to over
60C.
It will run at 1800rpm on "1" for a while and then the engine will say
"SKIT!" and I'll get a drop, it will run for 5-10 seconds and say
"SKIT!" again and drop.
** I can correct the problem by going back to 1+2. I have yet to see it
drop out on 1+2 -- excepting for the one drop I got last week coming
into the pattern... which is why I hesitate to take it into the air
again.
It seems to have something to do with power setting. If I leave it on
"1" it hasn't dropped out at 1500rpm ... it seems to drop out more at
2000rpm.
It may have a little to do with mixture setting... if I push the mixture
up to match the throttle at 1800rpm it seems to take longer for the
problem to show up. Once it does, mixture doesn't seem to correct it.
I'm running out of bright ideas... any suggestions?
Jon
direct advertising on the Matronics Forums.
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Yak-List message posted by: "Alan Cockrell" <yakdriver@comcast.net>
My aching back tells me it's time to dump the chair packs and get seat packs. Who
knows where the best deal is deal for Yak-52 butt packs? (p.s. I have 2 National
360 chair packs for sale.)
T-Boy
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Yak-List message posted by: "Frank Haertlein" <yak52driver@earthlink.net>
T-boy;
What is the difference between "CHAIR PACK" and "SEAT PACK"? I think I
know what a seat pack looks like but I've never heard of a "CHAIR PACK".
Thanks in advance
Frank
N9110M
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Alan Cockrell
Subject: Yak-List: Parachutes
--> Yak-List message posted by: "Alan Cockrell" <yakdriver@comcast.net>
My aching back tells me it's time to dump the chair packs and get seat
packs. Who knows where the best deal is deal for Yak-52 butt packs?
(p.s. I have 2 National 360 chair packs for sale.)
T-Boy
direct advertising on the Matronics Forums.
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Yak-List message posted by: "Stuart Mackereth" <stuart@bramptonyork.com>
I'm also trying to source 2nd hand repacked seat shutes (x2) -
preferably original russian ones - cheaper :-)
Anyone taken theirs out to replace them with western back shutes and
have them gathering dust in the hangar, gimme a shout.
Thanks in advance.
Stuart
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Alan Cockrell
Subject: Yak-List: Parachutes
--> Yak-List message posted by: "Alan Cockrell" <yakdriver@comcast.net>
My aching back tells me it's time to dump the chair packs and get seat
packs. Who knows where the best deal is deal for Yak-52 butt packs?
(p.s. I have 2 National 360 chair packs for sale.)
T-Boy
direct advertising on the Matronics Forums.
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Yak-List message posted by: "Lee Taylor " <leetay1@idcomm.com>
Alan: Talk to your parachute rigger, and have him install some lumbar
support pads in your packs. Much cheaper than new chutes. I also had a
real problem in the Eagles and Pitts I used to fly---after an acro
session my back would be killing me. I had a GREAT rigger at the time,
also a good friend, and he just scoffed when I told him about my back
problem. He repacked the chute to more evenly distribute the padding,
and installed some lumbar pads---VIOLA! Formula 1 Race Car full-support
seat/parachute. Couldn't believe the difference! Felt like I was
getting a back massage every time the G's went up, instead of a knife in
the back.
Remember that most parachute guys don't sit on their chutes,
they jump them. Therefore, unless you TELL the guy what you want, they
never think about packing or modifying them for comfort. They can
easily turn them into very comfortable, supportive units. I love mine,
even wear it on straight-and-level cross-countries. Hours at a time.
Mine's a chair-pack, too.
Lee Taylor
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Alan Cockrell
Subject: Yak-List: Parachutes
--> Yak-List message posted by: "Alan Cockrell" <yakdriver@comcast.net>
My aching back tells me it's time to dump the chair packs and get seat
packs. Who knows where the best deal is deal for Yak-52 butt packs?
(p.s. I have 2 National 360 chair packs for sale.)
T-Boy
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|