Kolb-List Digest Archive

Sun 02/18/18


Total Messages Posted: 6



Today's Message Index:
----------------------
 
     1. 05:30 AM - Re: Replacement tail rod...? (Richard Pike)
     2. 05:33 AM - Re: Something completely different... (Lanny Lambdin)
     3. 07:17 AM - Re: Replacement tail rod...? (Rex Rodebush)
     4. 04:04 PM - Firefly aileron throw (Richard Pike)
     5. 06:16 PM - Re: Firefly aileron throw (John Hauck)
     6. 07:02 PM - Re: Firefly aileron throw (Richard Pike)
 
 
 


Message 1


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    Time: 05:30:19 AM PST US
    Subject: Re: Replacement tail rod...?
    From: "Richard Pike" <thegreybaron@charter.net>
    On our Firefly, the original owner of the tailboom/tail assy slathered the tailwheel rod with epoxy before inserting it. Removed the now bent aluminum rod by cutting away the ventral fabric and then a liberal application of the heat gun. -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 Forgiving is tough, being forgiven is wonderful, and Grace really is amazing. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=478077#478077


    Message 2


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    Time: 05:33:55 AM PST US
    Subject: Re: Something completely different...
    From: Lanny Lambdin <lambdinwilliam@gmail.com>
    Greetings Kolb-List. Sorry for breaking into the tail-wheel post strand, bu t I was unsure what other avenue to use. I fly a Loehle Sport Parasol and a Challenger II CWS but as I am interested i n switching to a Kolb aircraft, I joined this List to be better informed. I h ave learned a great deal and have enjoyed the info and banter shared here. I would like to share another love of mine-music-with you all. I enjoy writ ing and recording songs and my latest effort is an album of songs related to fli ght and space travel. I also enjoy creating videos and posting to my site on Yo uTube. If you are interested you can search YouTube for "Miss Sunshine Walkaround", which is a look at my Challenger, and my other videos will show up as well. If you would like to hear my new songs on my Journey album, click on the BandCamp link below. You will miss a lot of fidelity if you don't use ear b uds or a good wifi speaker, however. Thanks for the good info on this site, the great videos that are shared and t he civil discourse (not found on some other sites!) "Live long and prosper!" Lanny Lambdin https://williammorrislambdin.bandcamp.com/album/journey-a-space-odyssey Sent from my iPad > On Feb 18, 2018, at 2:31 AM, Bill Berle <victorbravo@sbcglobal.net> wrote: > > > posted by: "John Hauck" <jhauck@elmore.rr.com> > > Bill B, you could have saved all that typing by asking how to secure the t ail wheel strut to the tail post. > > Well. my real question is whether it is acceptable to have it glued in, be cause this one sure looks like it is glued in. I can easily drill through it and put in a bolt, no biggie. > > But since many people here have far more experience with these airplanes, I figured maybe I would like to know what the advantage/disadvantage is of gl ue versus bolt. Aluminum sure does NOT like to be glued. > > In order to get the glued one out it appears that I would have to put a to rch on it to heat it and melt the glue, which would melt the fabric off, etc . If it is acceptable to leave it glued then that is the easiest way. But ma ybe not the safest or lowest risk. > ========================== ========= ========================== ========= ========================== ========= ========================== ========= ========================== ========= > > >


    Message 3


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    Time: 07:17:38 AM PST US
    Subject: Re: Replacement tail rod...?
    From: "Rex Rodebush" <jrrodebush@gmail.com>
    When I used the aluminum tail wheel rod I had a problem with the rod twisting and deforming at the bolt. So much so that the tailwheel became uncontrolable because of the angle. When I replaced it with a steel tube I added another bolt and a spring pin just to make sure. See the pictures from my previous post. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=478081#478081


    Message 4


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    Time: 04:04:48 PM PST US
    Subject: Firefly aileron throw
    From: "Richard Pike" <thegreybaron@charter.net>
    As most of you long time listers know, I have long been an advocate of reducing Kolb aileron deflection for a more pleasant flying experience, because in their stock form, Kolbs have a LOT of aileron deflection. Did it many years ago on my MKIII, which I documented here: http://oh2fly.net/oldpoops/pg7.htm This afternoon was an excellent day for flying, 60 degrees and no wind, so I went one richer on the main jet from last week and went flying. Still not quite perfect, but a lot less pipiness than before. Now instead of a 700 rpm range of foolishness, we only have a 300 rpm range where the 277 doesn't want to stay put. Still thinking that after it gets fully broken in it might settle down. Then Dave & I modified the aileron bellcrank, moved the pushrods in as far as practical, readjusted their length and flew it again. WOW! Talk about light on the controls - she is now a dancer! At higher speeds, you can see and feel the ailerons twisting to less than full throw, yet it cranks and banks just like it did before. (And why wouldn't it? Air loads limit maximum deflection; so no matter how much throw you build in with your bellcrank moment arms/lengths, the ailerons are still only going to deflect just so far.) At lower speeds, the aileron tubes quit their torque twisting, you get full throw of aileron deflection, excellent response, and in both cases, the amount of pressure involved at the stick is MUCH less than before. Bear in mind that this is just one flight, and not a couple hours of both Dave & I wringing it out and taking notes, but initial results are extremely positive. And, as always, we can easily put it back like it was. Note in the pictures that you can see how far the lower lever point has been moved in from stock, (out at the end) and also the amount of aileron travel still available after the mod. Substantial. -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 Forgiving is tough, being forgiven is wonderful, and Grace really is amazing. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=478092#478092 Attachments: http://forums.matronics.com//files/p1060517_medium_102.jpg http://forums.matronics.com//files/p1060518_medium_256.jpg http://forums.matronics.com//files/p1060519_medium_587.jpg http://forums.matronics.com//files/p1060520_medium_130.jpg


    Message 5


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    Time: 06:16:01 PM PST US
    From: "John Hauck" <jhauck@elmore.rr.com>
    Subject: Firefly aileron throw
    The first Fire Fly's had enormous ailerons. Homer designed for his style of flying, tree top level, in contact with the birds in the trees, extremely low and slow. For that style flying they were ok. Anything over a crawl would lock them up based on their sheer mass/area. On later model Fire Fly's the aileron cord was reduced quite a bit. I never flew the early models with the long cord ailerons, but got a lot of time in the later models. I don't recall heavy ailerons on the Fire Fly's I flew. In fact, on one cross wind landing at Lakeland, I hit the stop, ran out of aileron. Based on that experience, I wouldn't want to shorten the cord on the later model Fire Flies. On Richard P's Fire Fly, just eye balling, the aileron cord looks like the original. Based on my flight experience in the prototype MKIII, I cut the ailerons on my MKIII a good bit. Don't remember the dimensions now after 27 years, but I have never run out of aileron. Even after reducing the cord on the ailerons, after 60-65 MPOH they start loading up. Fine with me. I'm not looking for snappy roll at those speeds. No problem going lock to lock below 60. Random thoughts about ailerons from a Kolb pilot. That reminds me of my buddy, John Williamson, Kolbra Pilot. May 25 2018, will be 10 years since John made that last flight. john h Titus, Alabama -----Original Message----- From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Richard Pike Sent: Sunday, February 18, 2018 6:04 PM Subject: Kolb-List: Firefly aileron throw --> <thegreybaron@charter.net> As most of you long time listers know, I have long been an advocate of reducing Kolb aileron deflection for a more pleasant flying experience, because in their stock form, Kolbs have a LOT of aileron deflection. Did it many years ago on my MKIII, which I documented here: http://oh2fly.net/oldpoops/pg7.htm This afternoon was an excellent day for flying, 60 degrees and no wind, so I went one richer on the main jet from last week and went flying. Still not quite perfect, but a lot less pipiness than before. Now instead of a 700 rpm range of foolishness, we only have a 300 rpm range where the 277 doesn't want to stay put. Still thinking that after it gets fully broken in it might settle down. Then Dave & I modified the aileron bellcrank, moved the pushrods in as far as practical, readjusted their length and flew it again. WOW! Talk about light on the controls - she is now a dancer! At higher speeds, you can see and feel the ailerons twisting to less than full throw, yet it cranks and banks just like it did before. (And why wouldn't it? Air loads limit maximum deflection; so no matter how much throw you build in with your bellcrank moment arms/lengths, the ailerons are still only going to deflect just so far.) At lower speeds, the aileron tubes quit their torque twisting, you get full throw of aileron deflection, excellent response, and in both cases, the amount of pressure involved at the stick is MUCH less than before. Bear in mind that this is just one flight, and not a couple hours of both Dave & I wringing it out and taking notes, but initial results are extremely positive. And, as always, we can easily put it back like it was. Note in the pictures that you can see how far the lower lever point has been moved in from stock, (out at the end) and also the amount of aileron travel still available after the mod. Substantial. -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 Forgiving is tough, being forgiven is wonderful, and Grace really is amazing. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=478092#478092 Attachments: http://forums.matronics.com//files/p1060517_medium_102.jpg http://forums.matronics.com//files/p1060518_medium_256.jpg http://forums.matronics.com//files/p1060519_medium_587.jpg http://forums.matronics.com//files/p1060520_medium_130.jpg


    Message 6


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    Time: 07:02:44 PM PST US
    Subject: Re: Firefly aileron throw
    From: "Richard Pike" <thegreybaron@charter.net>
    Thanks, John - this Firefly is a lot like Johnny Cash's One-Piece-At-A-Time-Cadillac; it is cobbled together from an Original Firestar (wings - 5 rib), FSII (tail boom & tail), Firefly (front of fuselage cage), so it is certainly a mongrel. The ailerons are HUGE; wide chord, full span, full length. Our FF has a 28' wing span instead of the usual FF 22' wing span. OTOH, even with just a Rotax 277, we are seeing 800-1,000 fpm climb rates. WOOT! We are planning to get it inspected Tuesday and certified as Part 103 legal, and then paint it, (Krylon FTW) and maybe next year recover it in Oratex to give us a chance to strip the wings, look inside them, and maybe knock a few pounds off. Although as low as the wing loading already is, I would rather it pick up a few pounds than get any lighter... As Beauford said about his FF - "tissue plane..." -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=478097#478097




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