Today's Message Index:
----------------------
1. 06:06 AM - MV (Bob Dalton)
2. 06:34 AM - Re: MV (John Hauck)
3. 09:55 AM - Re: New Kolb Builder (G. Thompson)
4. 02:14 PM - Fw: [vula] Re: More on Aluminum Tubes (George Bass)
5. 02:25 PM - Any Kolb Flyers in San Antonio? (James and Cathy Tripp)
6. 03:47 PM - Re: bent bird (Don Gherardini)
7. 04:40 PM - Re: bent bird (Beauford)
8. 04:42 PM - Re: reminder (Don Gherardini)
9. 05:01 PM - Re: bent bird (Don Gherardini)
10. 06:53 PM - Re: bent bird (Christopher Armstrong)
11. 07:41 PM - Re: bent bird (John Cooley)
Message 1
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--> Kolb-List message posted by: "Bob Dalton" <wiserguy@comcast.net>
Gang, Do we have a list posted anywhere on who is going to MV? I thought John W.
had one, but do not know where to find it.
Bob Dalton
Manteca, CA
(future builder)
do not archive
Message 2
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--> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
thought John W. had one, but do not know where to find it.
|
| Bob Dalton
Morning Bob/All:
Here's the last roster I got from John W:
**********************************************************************
**
Monument Valley 2004 Kolb Gathering
Folks that have committed to gathering at Monument Valley during May
14-17, 2004:
04-21-2004:
John Hauck, Kolb Mark III, Titus, AL jhauck@elmore.rr.com
John Williamson, Kolb Kolbra, Arlington, TX kolbrapilot@comcast.net
Dave Pelletier, Kolb Mark III, Prescott, AZ pelletier@cableone.net
Eve Pelletier
George Thompson
Jim Clayton, Kolb Mark IIIXtra, Santa Clara, CA jspc78@yahoo.com
John Clayton
Jonathan Longsworth
Dave Rains, Rans, El Paso, TX rr@htg.net
Larry Bourne, Kolb Mark III, Palm Springs, CA biglar@gogittum.com
Mark German, Kolb Kolbra, Chisago City, MN aerofab@worldnet.att.net
Frank Reynen, Kolb Mark III on float, near Sacramento, CA
reynen@webcom.com
Christina Reynen
Gary Haley, Cessna 172, Houston, TX ghaley@wt.net
Beneta Haley
Jim Marsh, Piper Tri Pacer, Houston, TX
Debbie Marsh
Larry Cottrell, Kolb Mark III, Klamath Falls, OR lcottrel@kfalls.net
Karen Cottrell
04-22-2004:
Tom Coggin, RV6A, Alabama, motniggo@localnet.com
John Jung, Kolb FireStar, johnjung@compusenior.com
Mrs. Jung
Craig Nelson, Kolb Mark IIIXtra, Gilbert, AZ vitalfx0@msn.com
Tim Gherkins, Kolb FireStar II, Gilbert, AZ rp3420@motorola.com
Boyd Young, Kolb Mark III, Brigham City, UT by0ung@brigham.net
Mrs. Young
04-23-2004:
Dennis Kirby, Kolb Mark III, Cedar Crest, NM
Dennis.Kirby@kirtland.af.mil
Dwight A. Kottke, Kolb Mark III, Dwight.Kottke@hti.htch.com
04-24-2004:
John Bickham, Kolb Mark III, St. Francisville, LA BICUM@aol.com
Bob Dalton, Manteca, CA, wiserguy@comcast.net
Robert Mason, Simi Valley, CA masonclan@sbcglobal.net
Erich Weaver, Kolb Mark III , Santa Barbara, CA
erich_weaver@urscorp.com
Sonja Weaver
Kendall Weaver
04-25-2004:
Jim Hefner, Kolb FireFly, Tucson, AZ HEFNER_JIM@msn.com
15 airplanes, 34 people
**********************************************************************
*
Anyone else we can add to the roster?
john h
DO NOT ARCHIVE
Message 3
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| Subject: | Re: New Kolb Builder |
--> Kolb-List message posted by: "G. Thompson" <eagle1@commspeed.net>
Thanks
John, That had all the information we needed. See you Friday.
George
----- Original Message -----
From: "John Hauck" <jhauck@elmore.rr.com>
Subject: Re: Kolb-List: New Kolb Builder
> --> Kolb-List message posted by: "John Hauck" <jhauck@elmore.rr.com>
>
> | I am having a very good friend wanting to know all the info on
> Monument
> altitude, Name
> spam
>
> Hi George/All:
>
> Here is the info on UT25, Monument Valley:
>
> http://www.airnav.com/airport/UT25
>
> Take care,
>
> john h
>
> PS: Everyone is welcome, no matter what they fly, drive, pull, push,
> or drag to Mounument Valley.
>
> DO NOT ARCHIVE
>
>
Message 4
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| Subject: | Re: Fw: [vula] Re: More on Aluminum Tubes |
pts rule name description
---- ---------------------- --------------------------------------------------
--> Kolb-List message posted by: "George Bass" <gtb@commspeed.net>
This message was copied from the VULA list & forwarded to the Kolb list
for fairly obvious reasons. One never knows where this info may be used,
but, the sizes & the thicknesses, etc. may benefit some folks here.
Blue Skies,
George Bass
=======================================================
----- Original Message -----
From: "Scott Perkins" <2scott@bellsouth.net>
Subject: [vula] Re: More on Aluminum Tubes
> In Atlanta there is a branch of a national company called "TUBE SALES."
>
> In talking with the sales rep yesterday, he informed me they
> had 6063-T6 ( which seems like an odd alloy to me ? ? ) in tube
> sizes of 6 inch dia. .058 wall thickness for $8.00 per foot in 20' ft
> lengths.
> ( weight = 1.25 lb per foot ) [I think nice to build a Kolb type wing
> with]
>
> also they have 5" dia in .078 wall thick for $6.47 per foot.
>
> Weaker alloys can always be used to obtain the same strength but
> a weight penality will be imposed by having to use more of the material.
> There could be other nasty characteristics however of particular alloys.
>
> A tube supplier called Shappiro has 6061-T4 in 6" dia. and .049 wall
> for
> $20 per foot in 12 ft lengths.
>
> All kinds of material has been used for irrigation so it is improper to
> say
> or call any alloy an irrigation pipe although it may have been used a
> lot
> in that application.
>
> Scott
>
---
Message 5
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| Subject: | Any Kolb Flyers in San Antonio? |
--> Kolb-List message posted by: "James and Cathy Tripp" <jtripp@elmore.rr.com>
I'll be in San Antonio all next week (10 - 14 May). If there are any Kolb flyers
in that area, It would be great to get together.
James Tripp
FSII, Final Assembly
do not archive
Message 6
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--> Kolb-List message posted by: "Don Gherardini" <donghe@one-eleven.net>
Beauford,,,yes,,,due to the placement of the probe on the stock Cuyuna
manifold..one can expect to see higher temps that on a rotax...
1150 to 1200 is my higher cruise numbers..and 1300 is where I do not let it
get over for more than a very short bit....
Technically speaking....a typical silicon/aluminum alloy piston begins to
loose confrmity at around 460 degrees..generally just below 500 it will
melt...or burn a hole in it.....and...since we cannot measure the temp on
the piston...we all rely on CHT and EGTs. These measurements will vary from
on different engines due to the ability of the transfer of heat from the
piston to the probe placement area. It is the expierience of the
manufacturer thru testing that tells..."when the cht is at XXXX
degrees...then the piston will be at xxx degrees"...
when you ask about a closed throttle glide...I will tell you assume you
mean ...reduced throttle...for I very sledom...maybe never close the
throttle entirely when flying my bird...
From pst expieriences...I reduce the throttle to...say 4000 or 4200...and
keep it there untill wheels down....and generally the egt is way down
....like 500 deg or almost unreadable.
after a hard climb at 6100...6150 rpms.......when the egt is hitting
1300....I do not just bring the throttle back a tad and level off....egts
will climb alot at 95% throttle after a hard climb....I usually pull it back
to 55 or 5000
I also can tell you that..since I had the prop off the bird this winter..and
had only done static adjusting prior to my flight...I did decide that I
needed a tqd more pitch....to load the engine just a squish more....to
reduce the EGT at that 52-5300 rpm area I like to cruise at...last summer I
was getting about 5300 rpms at 60 mph indicated and temps egt would run
around 1050 to 1100....this is where I left it for the 41 hours I put on it
last summer.
Don Gherardini
FireFly 098
http://www.geocities.com/dagger369th/my_firefly.htm
DO NOT ARCHIVE
.
Message 7
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--> Kolb-List message posted by: "Beauford" <beauford@tampabay.rr.com>
Interesting, Don...
Had your Cuyuna actually seized, vice merely not continuing to run (with the
attendant windmilling for at least a few seconds), I assume you would have
gotten enough feedback indication to tell the difference... As you know,
seizures are very abrupt, wrenching, well-defined events...Reading over your
account of the problem you had, it isn't clear which you believed to be the
case...abrupt seizure, or just a failure to continue running... Am curious
as to whether your EGT "normals" are related to it quitting, or not...
Either way, silence ain't necessarily golden, is it... Been there... :-)
Do you think it actually seized? Are you planning to tear it down and look
for indications of seizure damage on the pistons and cylinder bores...?
Regards,
Beauford
P.S. You are right, of course, ... I get my max EGT's at partial
throttle, not closed...
B.
----- Original Message -----
From: "Don Gherardini" <donghe@one-eleven.net>
Subject: Re: Kolb-List: bent bird
> Beauford,,,yes,,,due to the placement of the probe on the stock Cuyuna
> manifold..one can expect to see higher temps that on a rotax...
>
>
Message 8
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--> Kolb-List message posted by: "Don Gherardini" <donghe@one-eleven.net>
Kirk....
it is a complicated thing..but...think of it this way....
the CHT does definately measure just how warm the engine is....but rather
slowly in response time
The EGT is measureing how much heat is "leaving" the engine.....very
often...we can see a rise in EGT, and an immediate reduction in the retained
heat in the combustion chamber.....and...the vice-versa....it has to do with
probe placement.....or better said...it has to do with flow thru the engine
and just where the hottest spot in the exhaust gasses are....
Picture an exhaust manifold with a heat probe placed every inch from right
at the flange...to 1 foot down stream....
The hottest probe would be a different one as the engine is submitted to
different combinations of loads, and rpms .
in many of the combinations we would see a fairly cool reading at the flang,
right next to the engine.....and a hotter reading 3 inches away, and a
really hot...maybe the hottest at 10 inches...reading your egts ,
particularly on a 2 stroke...is sometime difficult to interpret.
Don Gherardini
FireFly 098
http://www.geocities.com/dagger369th/my_firefly.htm
Message 9
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--> Kolb-List message posted by: "Don Gherardini" <donghe@one-eleven.net>
Ben, ....and everyone....
thx again for your kind words and concern of me....
as for my cage...yes, I am gonna fix it Ben....little doubt that the 2500
bucks for a new one...would be more than I would want to spend just for a
quicker rebuild time....which is really the only reason I priced one....to
see what the cost was to get back in the air the fastest!...
I have pulled the ex manifold from my Cuyuna and found nice clean new
looking pistons peeking thru....no siezure or even a hint of high heat...
I am just about down to blameing that dang switch on the stoppage...as some
here have suggested.
I ruled it out inthe begining, as when I flipped the switch on and checked
the spark...first thing after the bird was in my shop...and found good
spark....jumping a .250 gap with perfect consistacy.
But....after going over everything else...and not finding a problem...I came
back to the switch, and I have not been able to duplicate the problem with
consistancy.(with a fluke Meter)...BUT I do get some suspicious indications
intermittantly.
since I cannot duplicate the conditions exactly...such as vibration in
flight from the engine and other.....I cannot be certain it is NOT the
culprit..
Thx again men....you are all too kind!
Don Gherardini
FireFly 098
http://www.geocities.com/dagger369th/my_firefly.htm
DO NOT ARCHIVE
Message 10
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--> Kolb-List message posted by: "Christopher Armstrong" <tophera@centurytel.net>
If this is something that happens occasionally would two switches (really a
double pole single throw switch) wired in parallel for a closed runs
ignitions system (like Cuyuna) and two switches in series for an open runs
ignition system(Rotax) be a good idea. At least then you would have to have
two switches fail at the same time to cause this.
Topher
-----Original Message-----
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com] On Behalf Of Don Gherardini
Subject: Re: Kolb-List: bent bird
--> Kolb-List message posted by: "Don Gherardini" <donghe@one-eleven.net>
Ben, ....and everyone....
thx again for your kind words and concern of me....
as for my cage...yes, I am gonna fix it Ben....little doubt that the 2500
bucks for a new one...would be more than I would want to spend just for a
quicker rebuild time....which is really the only reason I priced one....to
see what the cost was to get back in the air the fastest!...
I have pulled the ex manifold from my Cuyuna and found nice clean new
looking pistons peeking thru....no siezure or even a hint of high heat...
I am just about down to blameing that dang switch on the stoppage...as some
here have suggested.
I ruled it out inthe begining, as when I flipped the switch on and checked
the spark...first thing after the bird was in my shop...and found good
spark....jumping a .250 gap with perfect consistacy.
But....after going over everything else...and not finding a problem...I came
back to the switch, and I have not been able to duplicate the problem with
consistancy.(with a fluke Meter)...BUT I do get some suspicious indications
intermittantly.
since I cannot duplicate the conditions exactly...such as vibration in
flight from the engine and other.....I cannot be certain it is NOT the
culprit..
Thx again men....you are all too kind!
Don Gherardini
FireFly 098
http://www.geocities.com/dagger369th/my_firefly.htm
DO NOT ARCHIVE
Message 11
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--> Kolb-List message posted by: "John Cooley" <johnc@datasync.com>
Topher/Gang,
That was my thoughts/reaction to the post about the switch failure. It's
very common to do this in R/C airplanes when you start getting into the
higher dollar planes.
P.S. Ya'll all be careful and have fun on the M.V. trip. (I'm jealous)
Also take lots of pics for us homebound folks.
Later,
John Cooley
Do not archive
--> Kolb-List message posted by: "Christopher Armstrong"
--> <tophera@centurytel.net>
If this is something that happens occasionally would two switches
(really a double pole single throw switch) wired in parallel for a
closed runs ignitions system (like Cuyuna) and two switches in series
for an open runs ignition system(Rotax) be a good idea. At least then
you would have to have two switches fail at the same time to cause this.
Topher
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