KR> Gap Seals
? ? Sent:?Tuesday, April 05, 2016 at 8:07 PM From:?"Mark Langford via KRnet" To:?krnet at list.krnet.org Cc:?"Mark Langford" Subject:?Re: KR> Adverse Yaw Owen wrote: > However, I also read an article about how important gap seals are for > increasing climb performance. See http://www.n56ml.com/troy/ for more on gap seals. Just looking at that big honkin' gap that you get when you build the wings per the plans, you can guess that there's an improvement in performance with gap seals. I built my wings with a Frise aileron, and with gap seals on that, I saw no benefit at all to the seals, mainly because the gap seals itself if you do it right. See http://www.n56ml.com/owings.html[http://www.n56ml.com/owings.html][http://www.n56ml.com/owings.html[http://www.n56ml.com/owings.html]] for more on that (near the bottom). Some folks would think that life is too short to spend this kind of effort on the ailerons, but I thought it was pretty simple and made a lot of sense. I will do my next one the same way, but will likely use a piano hinge at the top for simplicity and drag reductions (eliminating those external hinges from the airstream). Mark Langford ML at N56ML.com http://www.n56ml.com[http://www.n56ml.com][http://www.n56ml.com[http://www.n56ml.com]] --- I'll offer a completely different view of gap seals based on my experience testing them on my KR with the Diehl Wing/RAF-48. First off, if you built per plans, you should have a piano hinge that goes across the complete span of the aileron. While it's not even close to a "seal" it's also not an open flow of air up through the aileron hinge, so it isn't really disturbing the air flow on the top side of the wing. However, the gap seal will help streamline across teh gap from the bottom of the wing to the bottom of the aileron. Now for the real world testing... I used the mylar gap seals stuck to the trailing edge of the wing with 3M double stick tape. I tested both with and without the gap seals. With several climbs to altitude and several speed runs. I found no discernible difference in the performance numbers of my aircraft between flying with and without the gap seals. However, I did find that the mylar film really sucked up tight against the bottom of the aileron and caused the ailerons to bind to where it took a significant amount of muscle to move the ailerons at higher speeds. I was not at all comfortable with flying the plane with the ailerons in such a heavy condition, so once I had completed the testing, the gap seals were removed. My testing with the gap seals was an attempt to differentiate between real numbers vs anecdotal pilot induced fantasies; although since I'm pretty big on making speed improvements, I was really expecting big gains. That turned out to be not the case. I made it a point to fly the plane under conditions as identical as possible with the same load conditions between testing with and without gap seals. Just because I saw no performance advantage with the gap seals, and on my plane, a significant disadvantage, doesn't mean you won't find them to be advantageous on your plane. Also, I'll emphasize again, my testing was with RAF 48 Diehl Wings. Those that have tested with the "new" AS series airfoil have reported significant performance improvements. I thought my original test data was lost to time, but thanks to the archives, I readily located my original post with the testing data from Sept 2, 2000. See the post and test data below. Jeff Scott Los Alamos, NM - KR Pilots and Testers. Over the course of the summer, with some supplies from Mark Langford and Oscar Zuniga, we tested my KR-2S with the ?per plans? installation of the RAF 48 Airfoil and Diehl Wing skins with the use of Aileron gap seals. The seals were a thin mylar film that was stuck to the bottom of the wing with 3M 444 industrial double sided tape, then the leading edge of the gap seals were taped over with electrical tape. The mylar film bridged the gap between the trailing edge of the wing and the leading edge of the aileron on the bottom of the wing. The first order of business was to fly some performance numbers with the airplane. I started every session with the plane grossing 1075# and the temperature at 65 deg F at a pressure altitude of 6500 feet ASL. I did my time to climb testing by establishing a climb at a given airspeed at 6200 feet, then maintaining that climb speed through 6500 feet and timing it up through 7500feet. I tested at the speeds around my best rate, so I could establish times for climbing at 85, 90, 95, and 100 mph IAS. The results of the time to climb testing are posted below. The first row was my time to climb speeds with the plane in the same configuration it has flown in since the first flight 3 years ago and was intended to be a baseline to use for comparison. It didn?t necessarily work out that way. The second set of numbers were flown after the aileron gap s
KR> Gap Seals
At 09:35 PM 4/5/2016, you wrote: >If you're ever tempted to fly around the patch without the gap seals >between stub wing and outer wing installed, be prepared for a >dramatically lowered climb rate. +++ You created two "little wings" instead of one big one, dramatically reducing the aspect ratio. With the gaps exposed you effectively created two wings with four tips. Larry Flesner
KR> Gap Seals
Jeff Scott wrote: > I tested both with and without the gap > seals. With several climbs to altitude and several speed runs. I > found no discernible difference in the performance numbers of my > aircraft between flying with and without the gap seals. I think the difference may be that you can follow the plans and end up with a big gap at the lower front edge of the aileron, or you can take some care and design the nose of the aileron so that it comes close to sealing itself. I'll throw out that perhaps Troy's RAF48 "per-plans" ailerons may have had a big gap at the bottom during straight-ahead flight, whereas both mine (N56ML) and yours likely seal better at the nose and therefore do a better job of sealing themselves, so gap seals don't help in our case. I can't vouch for Troy's experience, but can verify my own with the AS5048 wing and Frise aileronsno discernible difference with gap seals installed. Just FYI, N891JF came with gap seals installed, and I haven't noticed a lot of difficulty in making turns. But I also haven't experienced a stellar climb rate either. Maybe I need to do some testing, rip them off, and do some more testing. I'll have to find a fish scale that measures in grams though, instead of ounces of force. What I really need is a Corvair hanging off the nose of this thing! While we're on the subject of gap seals, I'll throw this out. If you're ever tempted to fly around the patch without the gap seals between stub wing and outer wing installed, be prepared for a dramatically lowered climb rate. And if you do it with only one missing and the other installed, be prepared for a serious roll tendency! How do I know this? Experimentation... Mark Langford ML at N56ML.com http://www.n56ml.com
KR> Gap seals
As a supplement to whatever one uses to cover up the wing joint, I've used white Scotch 35 2-inch wide tape to seal any gaps and seams. It's very difficult to find in the 2 inch width - but it's out there. My only known source is a sailplane business at Warner Springs: http://www.skysailing.com/ A roll is $26 but it lasts a long time. I've not been able to find it anywhere else. Another source of good tapes for gap seals and other airplane uses (such as the elevator hinges) is this place below. They have a minimum order so I've never ordered from them but they have some very interesting tapes. http://www.wingsandwheels.com/page28.htm Mike KSEE Woman is 57 But Looks 35 Mom publishes simple facelift trick that angered doctors... http://thirdpartyoffers.juno.com/TGL3141/4ff1fd509a13d7d505711st54vuc
KR> gap seals
Larry said: but I recall that there is no aerodynamic gain in covering the opening with the RAF48 airfoil. It is my understanding that regardless of airfoil, that the primary benefit, and reason for the wing gap seals for ailerons is for the benefit to climb rate. The drag induced by the angle of attack allowing a significant amount of air to burble through this area and cause drag, regardless of airfoil is the reason for adding the seal. Almost all planes I have flown, in one way or another, seem to have addressed this issue, either through a seal, or the hinge and leading edge being mated like the elevator male and female surfaces (like a half moon formed into each surface for smooth actuation and little drag). Even Cessna Frise ailerons are mated with drag in cruise and climb a consideration by making the area where the hinge is mate with the least aerodynamic drag. Only when deflected do they cause the designed drag to balance the outboard lift/drag induced (but that is another story)... Colin Rainey brokerpi...@bellsouth.net
KR> gap seals
Larry said: but I recall that there is no aerodynamic gain in covering the >opening with the RAF48 airfoil. > >It is my understanding that regardless of airfoil, that the primary benefit, >and reason for the wing gap seals for ailerons is for the benefit to climb >rate. >Colin Rainey What I said was: "The bottom needs to be open when using the piano hinge to get the correct downward deflection. Some have covered the opening with a gap seal (easily done) but I recall that there is no aerodynamic gain in covering the opening with the RAF48 airfoil." It's the bottom opening that I was talking about. The hinge closes the top and provides the aileron gap seal to eliminate airflow from bottom to top or vise versa at the wing trail edge. I recall someone testing both the RAF48 and the new airfoil and found no aerodynamic benefit when closing the bottom aileron gap on the RAF48 airfoil. There was, as I recall, a benefit with the new airfoil in the climb rate. It's been a while so I could be in error. If so, someone will correct me. Larry Flesner
KR> gap seals
I installed gap seals, and would have to agree; I saw no aerodynamic benifit, but in my case they flutter at stall speed and so they are now my stall warning device. You results my vary. :-) - Original Message - From: "Larry&Sallie Flesner" To: "KRnet" Sent: Friday, May 25, 2007 4:59 AM Subject: Re: KR> gap seals > > Larry said: but I recall that there is no aerodynamic gain in covering the > >opening with the RAF48 airfoil. > > > >It is my understanding that regardless of airfoil, that the primary benefit, > >and reason for the wing gap seals for ailerons is for the benefit to climb > >rate. > >Colin Rainey > > > What I said was: > > "The bottom needs to be open when using the piano hinge > to get the correct downward deflection. Some have covered > the opening with a gap seal (easily done) but I recall that > there is no aerodynamic gain in covering the opening with > the RAF48 airfoil." > > It's the bottom opening that I was talking about. The hinge > closes the top and provides the aileron gap seal to eliminate > airflow from bottom to top or vise versa at the wing trail edge. > > I recall someone testing both the RAF48 and the new airfoil > and found no aerodynamic benefit when closing the bottom > aileron gap on the RAF48 airfoil. There was, as I recall, a > benefit with the new airfoil in the climb rate. > > It's been a while so I could be in error. If so, someone will > correct me. > > Larry Flesner > > > > > > >
KR> gap seals
when i installed gap seals yes i woiuld say i say an improvement in roll and climb has anyone fitted vortex generators phill - Original Message - From: "Rich Seifert" To: "KRnet" Sent: Saturday, May 26, 2007 1:43 AM Subject: Re: KR> gap seals >I installed gap seals, and would have to agree; I saw no aerodynamic > benifit, but in my case they flutter at stall speed and so they are now my > stall warning device. You results my vary. :-) > > - Original Message - > From: "Larry&Sallie Flesner" > To: "KRnet" > Sent: Friday, May 25, 2007 4:59 AM > Subject: Re: KR> gap seals > > >> >> Larry said: but I recall that there is no aerodynamic gain in covering >> the >> >opening with the RAF48 airfoil. >> > >> >It is my understanding that regardless of airfoil, that the primary > benefit, >> >and reason for the wing gap seals for ailerons is for the benefit to > climb >> >rate. >> >Colin Rainey >> >> >> What I said was: >> >> "The bottom needs to be open when using the piano hinge >> to get the correct downward deflection. Some have covered >> the opening with a gap seal (easily done) but I recall that >> there is no aerodynamic gain in covering the opening with >> the RAF48 airfoil." >> >> It's the bottom opening that I was talking about. The hinge >> closes the top and provides the aileron gap seal to eliminate >> airflow from bottom to top or vise versa at the wing trail edge. >> >> I recall someone testing both the RAF48 and the new airfoil >> and found no aerodynamic benefit when closing the bottom >> aileron gap on the RAF48 airfoil. There was, as I recall, a >> benefit with the new airfoil in the climb rate. >> >> It's been a while so I could be in error. If so, someone will >> correct me. >> >> Larry Flesner >> >> >> >> >> >> >> > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > Post photos, introductions, and For Sale items to > http://www.kr2forum.com/phpBB2/index.php > please see other KRnet info at http://www.krnet.org/info.html > > > -- > Internal Virus Database is out-of-date. > Checked by AVG Free Edition. > Version: 7.5.410 / Virus Database: 268.17.15/659 - Release Date: > 30/01/2007 09:31 > > -- I am using the free version of SPAMfighter for private users. It has removed 25575 spam emails to date. Paying users do not have this message in their emails. Get the free SPAMfighter here: http://www.spamfighter.com/len
KR> gap seals
Yea I bought into the gap seal will make the airplane go faster B.S. too When I had a C-150 it didn't go any faster however I could walk a little faster without all that money I spent having them put on P.T. Barnum theres's a sucker born every minute. Bye Jim B KICT - Original Message - From: "Joe Beyer" To: Sent: Friday, May 05, 2006 11:59 PM Subject: KR> gap seals >I have installed gap seals on my KR-2 a couple of years ago and have seen >no > noticeabled difference in performance. I am considering taking them off. > The > gap seals cause more mechanical friction on the aileron rigging and that I > don't need. Also the wing is easier to handle when off the plane without > the > seals. Follow the plans when building. > > > > -Joe > > > > > > > > Message: 6 > > Date: Fri, 5 May 2006 22:16:10 -0500 > > From: "Mark Langford" > > Subject: KR> flying > > To: "KRnet" > > Message-ID: <001c01c670bb$6cc93a00$2802a8c0@2600xp> > > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > > reply-type=original > > > > NetHeads, > > > > I've been doing a little bit of flying myself. Considering we were > > surrounded by thunderstorms, yesterday was a pretty smooth flying day. I > > got in about 3 hours, first doing climbs, glides, and stalls, then adding > > gap seals and repeating the process. Bottom line is that I could tell no > > appreciable difference in climb rate (and I have some pretty accurate > data, > > gathered while maintaining 95mph in each climb, plus or minus a mph or two > > either way). Stall speed might have dropped a mph or two. Top speed > > appears to have improved slightly. I'll have to dig up the E6B to find > out > > exactly how much, but it's not much. I attribute this to the care I > > exercised fairing the ailerons and split flaps into the wing (details near > > the bottom of http://home.hiwaay.net/~langford/owings.html ). Building > > ailerons per the plans yields a big fat gap at the bottom and that begs > for > > > gap seals. One odd thing is that the stalls are now preceeded by some > > noticeable buffeting, which is new, and I'd swear it climbs with less > > fuselage angle and lands easier (I greased about 5 in a row at FYM), but > > these are probably my imagination. > > > > I'm up to 519 KR "landings" (and still only on the second set of tires!) > and > > > 210.9 hours of KR time (sorry, Larry). Maybe I'll get some more in > > tomorrow, as I plan to buzz up to MRC to visit Troy Petteway, a 20 minute > > flight... > > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
KR> gap seals
Its going to take more than gap seals to make something as slick as C-150 go faster. I would say that on my KR2 there is a noticable difference. Regards Barry Kruyssen Cairns, Australia k...@bigpond.com http://www.users.bigpond.com/kr2/kr2.htm -Original Message- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Jim Sent: Tuesday, 9 May 2006 9:38 AM To: KRnet Subject: Re: KR> gap seals Yea I bought into the gap seal will make the airplane go faster B.S. too When I had a C-150 it didn't go any faster however I could walk a little faster without all that money I spent having them put on P.T. Barnum theres's a sucker born every minute. Bye Jim B KICT - Original Message - From: "Joe Beyer" To: Sent: Friday, May 05, 2006 11:59 PM Subject: KR> gap seals >I have installed gap seals on my KR-2 a couple of years ago and have >seen no noticeabled difference in performance. I am considering taking >them off. > The > gap seals cause more mechanical friction on the aileron rigging and >that I don't need. Also the wing is easier to handle when off the >plane without the seals. Follow the plans when building. > > > > -Joe
KR> gap seals
Is that slick or sick mispelled? On Tue, 9 May 2006 09:43:02 +1000 "Barry Kruyssen" writes: > Its going to take more than gap seals to make something as slick as > C-150 go > faster. I would say that on my KR2 there is a noticable > difference. > > Regards > Barry Kruyssen > Cairns, Australia > k...@bigpond.com > http://www.users.bigpond.com/kr2/kr2.htm > > > -Original Message- > From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On > Behalf > Of Jim > Sent: Tuesday, 9 May 2006 9:38 AM > To: KRnet > Subject: Re: KR> gap seals > > Yea I bought into the gap seal will make the airplane go faster B.S. > too > When I had a C-150 it didn't go any faster however I could walk a > little > faster without all that money I spent having them put on P.T. > Barnum > theres's a sucker born every minute. Bye Jim B KICT > ----- Original Message - > From: "Joe Beyer" > To: > Sent: Friday, May 05, 2006 11:59 PM > Subject: KR> gap seals > > > >I have installed gap seals on my KR-2 a couple of years ago and > have > >seen no noticeabled difference in performance. I am considering > taking > >them off. > > The > > gap seals cause more mechanical friction on the aileron rigging > and > >that I don't need. Also the wing is easier to handle when off the > > >plane without the seals. Follow the plans when building. > > > > > > > > -Joe > > > ___ > Search the KRnet Archives at > http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > >
KR> gap seals
Dream on Jim B - Original Message - From: "Barry Kruyssen" To: "'KRnet'" Sent: Monday, May 08, 2006 6:43 PM Subject: RE: KR> gap seals > Its going to take more than gap seals to make something as slick as C-150 > go > faster. I would say that on my KR2 there is a noticable difference. > > Regards > Barry Kruyssen > Cairns, Australia > k...@bigpond.com > http://www.users.bigpond.com/kr2/kr2.htm > > > -Original Message- > From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf > Of Jim > Sent: Tuesday, 9 May 2006 9:38 AM > To: KRnet > Subject: Re: KR> gap seals > > Yea I bought into the gap seal will make the airplane go faster B.S. too > When I had a C-150 it didn't go any faster however I could walk a little > faster without all that money I spent having them put on P.T. Barnum > theres's a sucker born every minute. Bye Jim B KICT > - Original Message - > From: "Joe Beyer" > To: > Sent: Friday, May 05, 2006 11:59 PM > Subject: KR> gap seals > > >>I have installed gap seals on my KR-2 a couple of years ago and have >>seen no noticeabled difference in performance. I am considering taking >>them off. >> The >> gap seals cause more mechanical friction on the aileron rigging and >>that I don't need. Also the wing is easier to handle when off the >>plane without the seals. Follow the plans when building. >> >> >> >> -Joe > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
KR> gap seals
Dream On Jim B - Original Message - From: "Barry Kruyssen" To: "'KRnet'" Sent: Monday, May 08, 2006 6:43 PM Subject: RE: KR> gap seals > Its going to take more than gap seals to make something as slick as C-150 > go > faster. I would say that on my KR2 there is a noticable difference. > > Regards > Barry Kruyssen > Cairns, Australia > k...@bigpond.com > http://www.users.bigpond.com/kr2/kr2.htm > > > -Original Message- > From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf > Of Jim > Sent: Tuesday, 9 May 2006 9:38 AM > To: KRnet > Subject: Re: KR> gap seals > > Yea I bought into the gap seal will make the airplane go faster B.S. too > When I had a C-150 it didn't go any faster however I could walk a little > faster without all that money I spent having them put on P.T. Barnum > theres's a sucker born every minute. Bye Jim B KICT > - Original Message - > From: "Joe Beyer" > To: > Sent: Friday, May 05, 2006 11:59 PM > Subject: KR> gap seals > > >>I have installed gap seals on my KR-2 a couple of years ago and have >>seen no noticeabled difference in performance. I am considering taking >>them off. >> The >> gap seals cause more mechanical friction on the aileron rigging and >>that I don't need. Also the wing is easier to handle when off the >>plane without the seals. Follow the plans when building. >> >> >> >> -Joe > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
KR> gap seals
I have installed gap seals on my KR-2 a couple of years ago and have seen no noticeabled difference in performance. I am considering taking them off. The gap seals cause more mechanical friction on the aileron rigging and that I don't need. Also the wing is easier to handle when off the plane without the seals. Follow the plans when building. -Joe Message: 6 List-Post: krnet@list.krnet.org Date: Fri, 5 May 2006 22:16:10 -0500 From: "Mark Langford" Subject: KR> flying To: "KRnet" Message-ID: <001c01c670bb$6cc93a00$2802a8c0@2600xp> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original NetHeads, I've been doing a little bit of flying myself. Considering we were surrounded by thunderstorms, yesterday was a pretty smooth flying day. I got in about 3 hours, first doing climbs, glides, and stalls, then adding gap seals and repeating the process. Bottom line is that I could tell no appreciable difference in climb rate (and I have some pretty accurate data, gathered while maintaining 95mph in each climb, plus or minus a mph or two either way). Stall speed might have dropped a mph or two. Top speed appears to have improved slightly. I'll have to dig up the E6B to find out exactly how much, but it's not much. I attribute this to the care I exercised fairing the ailerons and split flaps into the wing (details near the bottom of http://home.hiwaay.net/~langford/owings.html ). Building ailerons per the plans yields a big fat gap at the bottom and that begs for gap seals. One odd thing is that the stalls are now preceeded by some noticeable buffeting, which is new, and I'd swear it climbs with less fuselage angle and lands easier (I greased about 5 in a row at FYM), but these are probably my imagination. I'm up to 519 KR "landings" (and still only on the second set of tires!) and 210.9 hours of KR time (sorry, Larry). Maybe I'll get some more in tomorrow, as I plan to buzz up to MRC to visit Troy Petteway, a 20 minute flight...
KR> gap seals
Historicaly, gap seals have been used in applications where air is getting through a flying surface from one side of the wing to the other, thus interupting the boundry layer on that side and causing drag. With your piano hinges that are on the KR ailerons, I don't think enough air can get through them to make gap seals very effective. Bobby > I have installed gap seals on my KR-2 a couple of years ago and have seen > no > noticeabled difference in performance. I am considering taking them off. > The > gap seals cause more mechanical friction on the aileron rigging and that I > don't need. Also the wing is easier to handle when off the plane without > the > seals. Follow the plans when building. > > > > -Joe > > > > > > > > Message: 6 > > Date: Fri, 5 May 2006 22:16:10 -0500 > > From: "Mark Langford" > > Subject: KR> flying > > To: "KRnet" > > Message-ID: <001c01c670bb$6cc93a00$2802a8c0@2600xp> > > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > > reply-type=original > > > > NetHeads, > > > > I've been doing a little bit of flying myself. Considering we were > > surrounded by thunderstorms, yesterday was a pretty smooth flying day. I > > got in about 3 hours, first doing climbs, glides, and stalls, then adding > > gap seals and repeating the process. Bottom line is that I could tell no > > appreciable difference in climb rate (and I have some pretty accurate > data, > > gathered while maintaining 95mph in each climb, plus or minus a mph or two > > either way). Stall speed might have dropped a mph or two. Top speed > > appears to have improved slightly. I'll have to dig up the E6B to find > out > > exactly how much, but it's not much. I attribute this to the care I > > exercised fairing the ailerons and split flaps into the wing (details near > > the bottom of http://home.hiwaay.net/~langford/owings.html ). Building > > ailerons per the plans yields a big fat gap at the bottom and that begs > for > > > gap seals. One odd thing is that the stalls are now preceeded by some > > noticeable buffeting, which is new, and I'd swear it climbs with less > > fuselage angle and lands easier (I greased about 5 in a row at FYM), but > > these are probably my imagination. > > > > I'm up to 519 KR "landings" (and still only on the second set of tires!) > and > > > 210.9 hours of KR time (sorry, Larry). Maybe I'll get some more in > > tomorrow, as I plan to buzz up to MRC to visit Troy Petteway, a 20 minute > > flight... > > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
KR> Gap Seals
Steve Jones, Please contact me offline. I have some Mylar for you. Jim Vance va...@claflinwildcats.com
KR> Gap Seals / idea - question
>Another possible solution, >What about some of the great Model aircraft coverings, >Phil Matheson +++ Why not just make a strip of fiberglass as long and wide as you want. Lay it on plastic or other smooth, non-stick surface for a smooth finish and glass/epoxy it to the bottom side of the wing to cover the gap. If you have to remove the aileron you could undo the aileron pushrod and tip the aileron to the vertical position to get to the hinge attach bolts. A piece of tape on the aileron surface would keep the gap seal from marking the paint. Larry Flesner
KR> Gap Seals / idea - question
Excellent idea Larry. That would work just fine. If I had not already ordered my Mylar that would be an option. However, the Mylar being applied with double sided tape is still the best answer for those who have already painted. Mark Jones (N886MJ) Wales, WI USA E-mail me at flyk...@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html - Original Message - From: "larry flesner" To: "KRnet" Sent: Tuesday, October 26, 2004 6:28 PM Subject: KR> Gap Seals / idea - question > > >Another possible solution, > >What about some of the great Model aircraft coverings, > >Phil Matheson > +++ > > Why not just make a strip of fiberglass as long and wide as you > want. Lay it on plastic or other smooth, non-stick surface for > a smooth finish and glass/epoxy it to the bottom side of the wing to > cover the gap. If you have to remove the aileron you could undo > the aileron pushrod and tip the aileron to the vertical position > to get to the hinge attach bolts. A piece of tape on the aileron > surface would keep the gap seal from marking the paint. > > Larry Flesner > > > > ___ > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
KR> Gap Seals / idea - question
The amount of flex required, especially for the ailerons fitted with a piano hing, would cause fibreglass and the paint on it to eventually crack. Also the fireglass is stiffer than Mylar and would cause more drag on the controls. I've been using mylar on gliders for years and have already bought, about a year ago, 5 meters by 1 meter of 0.3 mm of mylar, I haven't fitted it yet as I want to get my test period flown off first. Though looking at that curved mylar from http://www.wingsandwheels.com/page28.htm I will probably order some from them as I am concerned that flat mylar that wide may fold into the aileron gap, I have piano hing type fittings. Progress report: Jabiru 2200 fitted, making new cowling plug, then mould, then cowling. regards Barry Kruyssen Cairns, Australia RAA 19-3873 k...@bigpond.com http://users.tpg.com.au/barryk/KR2.htm - Original Message - From: larry flesner Why not just make a strip of fiberglass as long and wide as you want. Lay it on plastic or other smooth, non-stick surface for a smooth finish and glass/epoxy it to the bottom side of the wing to cover the gap. If you have to remove the aileron you could undo the aileron pushrod and tip the aileron to the vertical position to get to the hinge attach bolts. A piece of tape on the aileron surface would keep the gap seal from marking the paint.