Kolb-List Digest Archive

Tue 01/12/16


Total Messages Posted: 6



Today's Message Index:
----------------------
 
     1. 09:04 AM - Use of a Kolb...AOA (Nick Cassara)
     2. 09:17 AM - Re: Re: Horizontal stabilizer seals (Richard Girard)
     3. 12:40 PM - Re: Horizontal stabilizer seals (Richard Pike)
     4. 12:45 PM - Re: Use of a Kolb...AOA (Larry Cottrell)
     5. 02:07 PM - Re: Use of a Kolb...AOA (John Hauck)
     6. 02:38 PM - Re: Use of a Kolb...AOA (Herb)
 
 
 


Message 1


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    Time: 09:04:29 AM PST US
    From: Nick Cassara <nickc@mtaonline.net>
    Subject: Use of a Kolb...AOA
    Hello Kolb Flyers, Builders, and others After years of being a student of the Kolb aircraft, it is my concussion that the only limits of the Kolb Aircraft are the imaginations of the people building and flying them. As for the use and need for an AOAI live in Alaska, a fifth the size of the United State of America, however there are very few airports, and a lot more gravel bars, alpine meadows, coastal beaches, and rough patches of ice. The modern AOA instruments are very valuable to people who fly the edges." The FAA and the local flight safety organizations have been encouraging the insulation of AOAs to save pilots lives. Moose kill a number of pilots every year, stall spin accidents. Before I retired, I spent many hundreds of hours in the back seat of a Super Cub, identifying and counting wildlife with some of Alaskas best pilots, who have thousands of hour in their planes. I however am not one of Alaska best pilots, and If an AOA can keep me from making a fatal mistake the time to install, and the expense will be well worth it. Nick Cassara Palmer, Alaska 607AK Kolb Kolbra #1


    Message 2


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    Time: 09:17:03 AM PST US
    Subject: Re: Horizontal stabilizer seals
    From: Richard Girard <aslsa.rng@gmail.com>
    All, the reason I suspect that the flow through the slot is vertical is because I found the effectiveness of the seals while doing stall testing. When I held it in a falling leaf stall the aircraft was descending at over 1000 feet per minute. The elevator was deflected up to its limit. On top of that the greater area of the rudder is above the horizontal stabilizer. As far as propwash is concerned, the Plane from Hell had a 2.62 ratio gearbox so at idle the prop was only spinning at 900 rpm or so. On my airplane the "C" gearbox has 4.00 gears and prop rpm at idle is only 550 (it only turns 1500 at full throttle). I could detect no difference between the two airplanes. I do wish I'd tuft tested the rudder flow, but at the time I was content to get one more thing on that damnable airplane fixed that I just moved on to the next problem. Rick On Sun, Jan 10, 2016 at 2:59 PM, John Hauck <jhauck@elmore.rr.com> wrote: > > What if the tail section is on a few feet from the prop which is generati ng > a very strong rotating column of air directly on the tail section? > > Air flow over the tail of a Kolb is interesting based on prop wash. I ge t > a > pretty good idea of what the air is doing based on crankcase residue bein g > blown from the vent tube and sticking to the tail section. > > john h > mkIII > Titus, Alabama > > > -----Original Message----- > From: owner-kolb-list-server@matronics.com > [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Jack B. Hart > Sent: Sunday, January 10, 2016 1:56 PM > To: kolb-list@matronics.com > Subject: Re: Kolb-List: Re: Horizontal stabilizer seals > > --> <jbhart@onlyinternet.net> > > >At 11:56 AM 1/10/2016, you wrote: > I believe what happens is that the air leaking through the slot between t he > horizontal stabilizer and the boom tube causes the flow to go more > vertically over the rudder rather than horizontally. I base this on the > results of tuft testing I did on the Mk III's rear fuselage segment as se en > in the video I shot of the tests: > > > > > Rick, > > I believe if you check it out you will find that while you are in level > flight the tail has to exert a downward force. This means the air pressu re > on top of the horizontal stabilizer will be greater than that found on th e > bottom side. Air will always move from high to low pressure. So, if any > air is moving through the gap, it will be down through the gap not up. > > Jack B. Hart FF004 > Winchester, IN > > =========== =========== =========== =========== =========== > > -- =9CBlessed are the cracked, for they shall let in the light.=9D Groucho Marx <http://www.goodreads.com/author/show/43244.Groucho_Marx>


    Message 3


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    Time: 12:40:23 PM PST US
    Subject: Re: Horizontal stabilizer seals
    From: "Richard Pike" <thegreybaron@charter.net>
    Many years ago I made some gaps seals to go between the horizontal stab and the tube of my MKIII. The trick is having something that gets real close to the stab, but still allows the horizontal tail to fold up. Here is what I did: go to Lowes and get some 1/2" by 1/2" by 1/16" aluminum angle. Along the side that you will have next to the stab, you will glue some rubber u-channel from Aircraft Spruce, part # 05-02200 ( https://www.aircraftspruce.com/catalog/appages/uchannel.php?clickkey=429408 ) The stab folds up and down while just barely touching the rubber u-channel. In front of the front hinge, the space is too wide, and you will need to use 3/4" by 3/4" by 1/16" aluminum angle to fill up the gap. Also it was easier to get everything to line up by having the piece in front of the hinge opposite - or upside down - as it attached to the fuselage compared to the section behind the hinge because the stab is not attached parallel to the tube, the front of the stab is higher. This causes the gap to be bigger in front which means you have to spacer out the front of the 1/2" angle away from the fuselage a bit to keep it up against the stab. Which means you have to bend the aluminum angle a bit to keep it at a constant angle against the stab, and you need to fill that space between the tube and the angle with balsa wood or similar to fill the gap and make it look right. Hopefully the pictures will make sense. One other thing - if you put the u-channel on last, don't use Gorilla glue. It sticks great, but it also bubbles out underneath and looks terrible. As you can see. -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 Would you consider yourself to be a good person? https://www.youtube.com/watch?v=VWcDXT6pH7A Read this topic online here: http://forums.matronics.com/viewtopic.php?p=451922#451922 Attachments: http://forums.matronics.com//files/left_lower_gapjpg_234.jpg http://forums.matronics.com//files/right_lower_gapjpg_845.jpg http://forums.matronics.com//files/top_right_gapjpg_567.jpg http://forums.matronics.com//files/top_front_gapjpg_595.jpg


    Message 4


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    Time: 12:45:44 PM PST US
    Subject: Re: Use of a Kolb...AOA
    From: Larry Cottrell <lcottrell1020@gmail.com>
    After reading about this subject quite a few times, I decided to do something about it. I looked on Bing ( Boycotting Google) and found that it was basically a weather vane with a graph. No reason that it could not be duplicated in a manner that Herb would approve of. So below are pictures of what should do the job just as well as one from Sporty's. It is installed where I don't have to be too far from my main landing instrument - ASI, so all that is left is to take a sharpie with me the next time I go flying and find the " Aw shit" position, make a mark on the lexan . Larry On Tue, Jan 12, 2016 at 10:04 AM, Nick Cassara <nickc@mtaonline.net> wrote: > > > Before I retired, I spent many hundreds of hours in the back seat of a > Super Cub, identifying and counting wildlife with some of Alaska=99 s best > pilots, who have thousands of hour in their planes. I however am not one of > Alaska best pilots, and If an AOA can keep me from making a fatal mistake > the time to install, and the expense will be well worth it. > > Nick Cassara > Palmer, Alaska > > 607AK Kolb Kolbra #1 > > -- > *The older I get, the less tolerant I am of those who are intolerant.* *If you forward this email, or any part of it, please remove my email address before sending.*


    Message 5


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    Time: 02:07:48 PM PST US
    From: "John Hauck" <jhauck@elmore.rr.com>
    Subject: Use of a Kolb...AOA
    If nothing else, the price is right. Waiting for a flight/stall report. john h mkIII Titus, Alabama From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Larry Cottrell Sent: Tuesday, January 12, 2016 2:44 PM Subject: Re: Kolb-List: Use of a Kolb...AOA After reading about this subject quite a few times, I decided to do something about it. I looked on Bing ( Boycotting Google) and found that it was basically a weather vane with a graph. No reason that it could not be duplicated in a manner that Herb would approve of. So below are pictures of what should do the job just as well as one from Sporty's. It is installed where I don't have to be too far from my main landing instrument - ASI, so all that is left is to take a sharpie with me the next time I go flying and find the " Aw shit" position, make a mark on the lexan. Larry On Tue, Jan 12, 2016 at 10:04 AM, Nick Cassara <nickc@mtaonline.net> wrote: Before I retired, I spent many hundreds of hours in the back seat of a Super Cub, identifying and counting wildlife with some of Alaska=99s best pilots, who have thousands of hour in their planes. I however am not one of Alaska best pilots, and If an AOA can keep me from making a fatal mistake the time to install, and the expense will be well worth it. Nick Cassara Palmer, Alaska 607AK Kolb Kolbra #1 -- The older I get, the less tolerant I am of those who are intolerant. If you forward this email, or any part of it, please remove my email address before sending.


    Message 6


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    Time: 02:38:52 PM PST US
    Subject: Re: Use of a Kolb...AOA
    From: Herb <Herbgh@nctc.com>
    if John's happy then I am plum tickled to death!! :-) Herb or the other Herb On 01/12/2016 04:05 PM, John Hauck wrote: > > If nothing else, the price is right. > > Waiting for a flight/stall report. > > john h > > mkIII > > Titus, Alabama > > *From:*owner-kolb-list-server@matronics.com > [mailto:owner-kolb-list-server@matronics.com] *On Behalf Of *Larry > Cottrell > *Sent:* Tuesday, January 12, 2016 2:44 PM > *To:* kolb-list@matronics.com > *Subject:* Re: Kolb-List: Use of a Kolb...AOA > > After reading about this subject quite a few times, I decided to do > something about it. I looked on Bing ( Boycotting Google) and found > that it was basically a weather vane with a graph. No reason that it > could not be duplicated in a manner that Herb would approve of. So > below are pictures of what should do the job just as well as one from > Sporty's. > > It is installed where I don't have to be too far from my main landing > instrument - ASI, so all that is left is to take a sharpie with me the > next time I go flying and find the " Aw shit" position, make a mark on > the lexan. > > Larry > > On Tue, Jan 12, 2016 at 10:04 AM, Nick Cassara <nickc@mtaonline.net > <mailto:nickc@mtaonline.net>> wrote: > > <mailto:nickc@mtaonline.net>> > > > Before I retired, I spent many hundreds of hours in the back seat of a > Super Cub, identifying and counting wildlife with some of Alaskas > best pilots, who have thousands of hour in their planes. I however am > not one of Alaska best pilots, and If an AOA can keep me from making a > fatal mistake the time to install, and the expense will be well worth it. > > Nick Cassara > Palmer, Alaska > > 607AK Kolb Kolbra #1 > > -- > > /The older I get, the less tolerant I am of those who are intolerant./ > > /If you forward this email, or any part of it, please remove my email > address before sending./ > -- Signature text; Add catchy phrase here..




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