Today's Message Index:
----------------------
1. 06:14 AM - Re: Rotax Relapse (Ralph)
2. 06:25 AM - Re: Re: Rotax relapse (Beauford)
3. 06:46 AM - Re: Re: Weather..To fly or not to fly T.I.T.Q. (Larry Cottrell)
4. 07:14 AM - Re: Weather..To fly or not to fly T.I.T.Q. (John Jung)
5. 08:35 AM - Re: Fiberglass Gear Legs (John Jung)
6. 08:43 AM - Re: Engine ideas (sleepless night) (John Jung)
7. 05:33 PM - Re: Fiberglass Gear Legs (Roger Lee)
8. 05:50 PM - WIND INDICATOR (Bill Vincent)
9. 07:02 PM - Re: Rotax Relapse (DieselsRcool)
10. 07:21 PM - Kolbs in KC (Kolbdriver)
11. 09:25 PM - Re: Re: Rotax relapse (John Hauck)
12. 09:36 PM - Re: Re: Fiberglass Gear Legs (John Hauck)
Message 1
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| Subject: | Re: Rotax Relapse |
--> Kolb-List message posted by: "Ralph" <ul15rhb@juno.com>
Beauford, another thing to do is borrow a known good carburetor and swap it with
the one you've got. If everything straightens up, then you've got it nailed.
I keep my old carb for just that purpose.
Ralph
Original Firestar
19 years flying it
-- "Beauford" <beauford@tampabay.rr.com> wrote:
--> Kolb-List message posted by: "Beauford" <beauford@tampabay.rr.com>
Kolbers and Kolbettes:
Once again the mighty 447 asserts its total dominance over
a thoroughly beaten, sniveling and craven Beauford....
Last 5 hours -- Head temps are too high... they both climb steadily at =
full power, reaching=20
400 plus in about 20 seconds... and the fan-end cylinder remains hot, =
stabilizing
about 390 when one throttles back to normal (5800) cruise. Rear cylinder =
comes=20
down to about 360.
Data:
-- Engine had complete top end rebuild at Lockwood 16 hours ago...new =
pistons
and rings. Has consistently run hotter since rebuild, but not this hot =
until
last five hours.
-- Swapped plug thermocouples...verified front is hot cylinder and temp =
reads accurately
-- Same jetting as always... it previously ran at 340 CHT on these same =
jets
and with needle in this same (second) notch
-- No change in prop loading... turns 6050 static, 6450 wot in flight
-- Temps remain together up to 4400 rpm...then front takes off as =
throttle
is pushed up further...eventually gets to 40 degree difference
-- Both EGT's remain normal (1020) at WOT... 1090 at cruise.=20
-- Plugs are clean and pretty...good color,slightly on light side... no =
trace=20
of excess carbon
-- Running Amsoil Saber 100 to one, but I'm mixing it at 70 to one
-- Ran a test tank of Pennzoil AC 50 to 1, no change in problem
-- All new gaskets throughout top of engine... heads and both manifolds
are torqued and re-torqued. No evidence of leakage at head or exhaust =
gaskets.
--Have not yet pulled exhaust to verify rings are free..that is next =
step, followed
by compression check.
I'm thinking air leak. Anyone have any other "hot" ideas?
Also, is there any reliable way to leak-check the case and crank
seals without tearing down the engine...? =20
Beat-up Beauford
FF#076
Brandon, FL
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Message 2
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| Subject: | Re: Rotax relapse |
--> Kolb-List message posted by: "Beauford" <beauford@tampabay.rr.com>
...yeah.... I know...... but at this point I'd take help from Lord
Lockwood himself...
sigh...
do not archive
Subject: Re: Kolb-List: Re: Rotax relapse
> --> Kolb-List message posted by: possums <possums@mindspring.com>
> > Rookie
>
>
Message 3
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| Subject: | Re: Weather..To fly or not to fly T.I.T.Q. |
--> Kolb-List message posted by: "Larry Cottrell" <lcottrel@kfalls.net>
http://www.usairnet.com/cgi-bin/launch/code.cgi?sta=KLMT&model=avn&state=OR&Submit=Change+Location
try this. It will give you the guess for all times of the day. You of course
will have to change the location, but it gives you some idea of when you
should be getting out of the sky.
Larry, Oregon
Message 4
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| Subject: | Re: Weather..To fly or not to fly T.I.T.Q. |
--> Kolb-List message posted by: "John Jung" <jrjungjr@yahoo.com>
Ralph and Group,
Here is what I can tell you about the decision to fly or not: When I had little
experience and was flying ultralights (other than Kolbs), it was a big deal.
I spent a lot of time wondering about and trying to figure out the winds and weather.
It all changed, though, after getting more flying experience and changing
to a Kolb. Now, I fly in most any weather, if I need to, or really want to.
But given a choice, I tend to pick times to fly based on comfort, avoiding strong
thermals or really hot or cold weather. I don't generally worry about the
direction of the wind unless the winds are very high.
So, what I am suggesting here is that the problem of predicting weather is only
a tempory problem.
--------
John Jung
Firestar II N6163J
Surprise, AZ
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=32533#32533
Message 5
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| Subject: | Re: Fiberglass Gear Legs |
--> Kolb-List message posted by: "John Jung" <jrjungjr@yahoo.com>
> Roger Lee wrote: I also did not like the stock Mark III gear legs that taper
down from 1 3/8" to 3/4".
Roger and Group,
I'm with you. I think the problem with the aluminum gear legs is that there is
too much taper. The area near the wheel, where the diameter is 1" or less is very
easy to bend on a hard landing, or off-field landing. I would prefer no taper
to the current taper, and I plan to build some with no taper in the furure.
If I had the axle sockets, I would be using no-taper now. I suggested this change
to TNK, and got the feeling that I wasn't taken seriously. I have seen several
Kolbs that had big bends in the gear legs without damaging the cage, so
it is my opinion that a straight leg would give enough protection to the cage.
I am not restricting my comments to Mark III's.
--------
John Jung
Firestar II N6163J
Surprise, AZ
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=32555#32555
Message 6
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| Subject: | Re: Engine ideas (sleepless night) |
--> Kolb-List message posted by: "John Jung" <jrjungjr@yahoo.com>
Richard Pike wrote:
> So what does Simonini get for a Victor 2 with their C box?
Jack or anyone,
I also am interested in more information about the Victor 1 and 2. The 2 would
give my Firestar a nice cruise speed, and the weight appears to be O.K. But I
could not find price or even availability.
Where did you get your Victor? And, how does the power compare with the 447? Do
they exaggerate the HP?
--------
John Jung
Firestar II N6163J
Surprise, AZ
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=32560#32560
Message 7
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| Subject: | Re: Fiberglass Gear Legs |
--> Kolb-List message posted by: "Roger Lee" <ssadiver1@yahoo.com>
Hi All,
I talked to TNK too and I actually ordered a set of steal legs from them for my
Mark III Classic. I sent them back after I saw how high it lifted the nose and
they suggested that I change the angle of incidence on the wing. When I suggested
straight aluminum they said that would work and it was about the same strength
as the newer steal legs from them. My 1 3/8", 4" longer 7075 straight
gear legs work very well. I think the older style tapered legs may have been better
suited for the Mark III's when they were lighter and with out the mods like
the 912's and other equipment. The tapered legs just didn't hold up well on
some fields.
Just my two cents and I may get some change back on this post.
Roger Lee
16 more days
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=32648#32648
Message 8
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--> Kolb-List message posted by: "Bill Vincent" <emailbill@chartermi.net>
Ralph and Gang
When I first started flying I didn't fly in any wind...one time my =
friend Scott Trask came over and wanted to go
flying, and I said "are you crazy", "look how windy it is"!=20
He said what wind? I replied, didn't you see that leaf move!
But seriously:
If you are only going to fly in the local area, I found that watching =
the clouds tells me more than anything; even if it's dead calm on the =
ground but the clouds are moving at a good clip it will not be long =
before it is windy down below.
Sometimes it's the opposite; windy on the ground and calm above, but not =
all winds are bad. I have flown in 20 miles per hour winds but it a was =
a smooth flight.=20
Bill Vincent
FS II
Upper Peninsula of Michigan
DO NOT ARCHIVE
Message 9
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| Subject: | Re: Rotax Relapse |
--> Kolb-List message posted by: "DieselsRcool" <LarryB@LBMaps.com>
Are you 100% sure your gauge is correct? What brand/type is it? I seen the cheap
ones do some funny stuff.
If EGT is right on and CHT is amiss, cooling system correct. I'd be sure and double
check the source of your info.
Larry
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=32663#32663
Message 10
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--> Kolb-List message posted by: "Kolbdriver" <kolbdriver@mlsharp.com>
Well, it looks like I may be moving again! This will be the 4th state my
mark III has been in and she has never left the ground!!
Are there any Kolbers in the Kansas City area?
If so please contact me off list..
Message 11
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| Subject: | Re: Rotax relapse |
--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
| unload the prop to 6250 static and revert to 50 to 1 oil mix...then
hide =
| and watch temps... He sez 447's are
| highly sensitive to being overpropped.... mebbe I am too....
|
| Thanks again to you all... Will advise...
|
| Beauford
| FF#076
Beauford/All:
I would even go a little further and say "all" two strokes are highly
sensitive to "overpropping" and also "underpropping".
Overpropping pulls down EGT and pushes up CHT. Sorta like running
around in your 6 speed Ferrari, in 6th gear at 25 mph WOT climbing a
mountain. My turbo Cummins Diesel will kick the EGT past the red line
in a flash if I am pulling low rpm and high throttle setting. Drop a
gear or two or three, get the engine and turbo winding and the air
moving through the engine; EGT drops significantly. I know, I know.
It is not a two stroke. Works about the same though, in a lot of
respects.
Can not speak for Beauford's particular 447, but I never had EGT or
CHT problems with mine as long as I left the engine set up like it
came out of the box, PLUS prop the engine so that it will just bump
the red line at WOT straight and level flight. I prop my airplanes
same as I prop my boat, WOT straight heading and bump the red line.
As long as I prop the engine this way, EGT's will be right in the ball
park, and CHT's will remain in the green. This was also true for my
582. With a ground adjustable prop, or a fixed pitch prop, adjusted
this way will give you the best climb and cruise configuration, plus
the engine will also be happy!!!
May not work for everyone, but it has worked for me, very
satisfactorily.
Take care,
john h
mkIII
PS: If this reply does not make sense it is because I just walked in
the house after 4 days driving 33.5 hours, and 2,211 miles. I am the
new Daddy of a 1936 Farmall F-20. At 4,400 lbs, if it had wings it
would fly too. ;-) Was a nice solo trip to Hampton, Iowa, pulling an
empty 20 foot flat bed trailer one way, and hauling the F-20 the
other. Diesel fuel is out of sight. Paid 2.85 a gal when I refueled
the first time for the return trip. Kinda takes the fun out of
burning up the highway.
Message 12
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| Subject: | Re: Fiberglass Gear Legs |
--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
that there is too much taper.
| --------
| John Jung
John J/Gents and Ladies (I guess):
Ever stop to think that 7075 aluminum rod may not be the best spring
material in the world. Just guessing, but I think 7075 is about as
hard as we can heat treat aluminum. Please correct me if I am wrong
because I am only guessing at the above.
Just because Homer Kolb started using solid aluminum rod for main gear
legs back in the FS and Twinstar days, and TNK still uses the same
gear legs, with the exception of some newer heat treated 4130 legs,
does not make aluminum the best application for a spring type main
gear leg.
I have been using 4130 heat treated tubular gear legs on FS and mkIII
since 1987. Still using them on my mkIII with good success. Yep,
they are spring steel, heat treated to 48 RC, yet not too hard that
they will not bend, without breaking, is pranged hard enough. Yes, I
have inadvertently tested my gear legs this far. ;-)
Good luck with fiberglass rod legs and aluminum tubing stuffed with
wood legs.
Ever stop to wonder why automobiles don't use aluminum springs???
Probably some auto out there uses them simply because I asked the
question. hehehe
john h
mkIII
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