---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Fri 11/21/08: 16 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:03 AM - Re: Plexiglass Scratch Repair... (icrashrc) 2. 06:25 AM - Re: Plexiglass Scratch Repair... (John Hauck) 3. 06:56 AM - Re: Plexiglass Scratch Repair... (robert bean) 4. 06:57 AM - do not archive (boyd) 5. 07:17 AM - Re: Plexiglass Scratch Repair... (herb) 6. 07:38 AM - Re: Plexiglass Scratch Repair... (robert bean) 7. 08:16 AM - torque on various bolts (cristalclear13) 8. 09:38 AM - Re: My other hobby (grantr) 9. 10:53 AM - Re: Re: My other hobby (John Hauck) 10. 11:19 AM - Re: Re: My other hobby (Richard & Martha Neilsen) 11. 12:52 PM - Re: torque on various bolts (George Alexander) 12. 03:21 PM - Re: Re: torque on various bolts (Larry Cottrell) 13. 05:15 PM - Re: torque on various bolts (boyd) 14. 05:46 PM - Re: Re: torque on various bolts (Eugene Zimmerman) 15. 06:34 PM - Re: torque on various bolts (Richard Girard) 16. 09:18 PM - Re: Re: torque on various bolts (Larry Cottrell) ________________________________ Message 1 _____________________________________ Time: 03:03:52 AM PST US Subject: Kolb-List: Re: Plexiglass Scratch Repair... From: "icrashrc" Pretty impressive! -------- Scott www.ill-EagleAviation.com do not archive Read this topic online here: http://forums.matronics.com/viewtopic.php?p=215507#215507 ________________________________ Message 2 _____________________________________ Time: 06:25:25 AM PST US From: "John Hauck" Subject: Re: Kolb-List: Plexiglass Scratch Repair... > During the fitting of the Plexiglass canopy on my RV-8, I managed to put > some pretty disheartening scratches in the windscreen section. > Matt Dralle > RV-8 #82880 Hi Matt: I imagine most all of us Kolb builders and flyers have Lexan windshields, doors, and windows. How does this product work on Lexan? or will it work on Lexan? I tried to clean up a Lexan windshield, many years ago, with a product that was highly advertised in aviation circles back then. Ended up trashing the whole thing after the Lexan became cloudy and remained that way. Lexan is much softer than Plexiglass, thus we can bend it to extreme without fear of breaking. john h Marysvale, UT ________________________________ Message 3 _____________________________________ Time: 06:56:58 AM PST US From: robert bean Subject: Re: Kolb-List: Plexiglass Scratch Repair... John, the softness factor makes me wonder if you tried the scratch removal at a very low temperature????? It might affect the hardness of the lexan during the procedure. You would have to spin the drill at a low speed to prevent heating. Worth a try on a piece of scrap. BB On 21, Nov 2008, at 9:24 AM, John Hauck wrote: > > >> During the fitting of the Plexiglass canopy on my RV-8, I managed >> to put some pretty disheartening scratches in the windscreen section. > >> Matt Dralle >> RV-8 #82880 > > Hi Matt: > > I imagine most all of us Kolb builders and flyers have Lexan > windshields, doors, and windows. > > How does this product work on Lexan? or will it work on Lexan? > > I tried to clean up a Lexan windshield, many years ago, with a > product that was highly advertised in aviation circles back then. > Ended up trashing the whole thing after the Lexan became cloudy and > remained that way. > > Lexan is much softer than Plexiglass, thus we can bend it to > extreme without fear of breaking. > > john h > Marysvale, UT > > ________________________________ Message 4 _____________________________________ Time: 06:57:58 AM PST US From: "boyd" Subject: Kolb-List: do not archive I just deleted a screen full of messages of which MAYBE 2 were worthy of archiving.only one of these messages was tagged with the DO NOT ARCHIVE .. what happened to using the term DO NOT ARCHIVE??????? Matt if you are listening / reading.. And I know that storage space is cheep. could you consider changing the term to PLEASE ARCHIVE.. SORRY for the rant. had a really bad week. Boyd Young Kolb MkIII C 555+ hours and counting Brigham City Utah. ________________________________ Message 5 _____________________________________ Time: 07:17:49 AM PST US From: herb Subject: Re: Kolb-List: Plexiglass Scratch Repair... what I know from making a telescope mirror some years ago.... If one has a deep scratch...it will never "polish" out.. at least not in a reasonable amount of time...one has to start with a course grinding (sandpaper) material and take a particular scratch to its depth...then begin to use finer and finer grinding compounds til the area is in a see through condition when wetted...at that point polishing compounds,,,jewelers rouge, cerium oxide will begin to work...and possibly will not work at all on Lexan?? Herb polishing compounds are available at any lens makers...same for grinding compounds... any lens makers left in the states??? :-) Herb At 08:56 AM 11/21/2008, you wrote: > >John, the softness factor makes me wonder if you tried the scratch >removal at a very low temperature????? >It might affect the hardness of the lexan during the procedure. >You would have to spin the drill at a low speed to prevent heating. >Worth a try on a piece of scrap. >BB > >On 21, Nov 2008, at 9:24 AM, John Hauck wrote: > >> >> >> >>>During the fitting of the Plexiglass canopy on my RV-8, I managed >>>to put some pretty disheartening scratches in the windscreen section. >> >>>Matt Dralle >>>RV-8 #82880 >> >>Hi Matt: >> >>I imagine most all of us Kolb builders and flyers have Lexan >>windshields, doors, and windows. >> >>How does this product work on Lexan? or will it work on Lexan? >> >>I tried to clean up a Lexan windshield, many years ago, with a >>product that was highly advertised in aviation circles back then. >>Ended up trashing the whole thing after the Lexan became cloudy and >>remained that way. >> >>Lexan is much softer than Plexiglass, thus we can bend it to >>extreme without fear of breaking. >> >>john h >>Marysvale, UT >> >> >> > > ________________________________ Message 6 _____________________________________ Time: 07:38:50 AM PST US From: robert bean Subject: Re: Kolb-List: Plexiglass Scratch Repair... Herb, I did that for a few years. (now the listers will groan). Made a personal 6" reflector, hand parabolized with a Foucalt knife apparatus for guidance. Talk to you BC about it if you want. BB do not archive On 21, Nov 2008, at 10:17 AM, herb wrote: > > what I know from making a telescope mirror some years ago.... > > If one has a deep scratch...it will never "polish" out.. at > least not in a reasonable amount of time...one has to start with a > course grinding (sandpaper) material and take a particular scratch > to its depth...then begin to use finer and finer grinding compounds > til the area is in a see through condition when wetted...at that > point polishing compounds,,,jewelers rouge, cerium oxide will begin > to work...and possibly will not work at all on Lexan?? Herb > > polishing compounds are available at any lens makers...same for > grinding compounds... any lens makers left in the states??? :-) Herb > > > At 08:56 AM 11/21/2008, you wrote: >> >> John, the softness factor makes me wonder if you tried the scratch >> removal at a very low temperature????? >> It might affect the hardness of the lexan during the procedure. >> You would have to spin the drill at a low speed to prevent heating. >> Worth a try on a piece of scrap. >> BB >> >> On 21, Nov 2008, at 9:24 AM, John Hauck wrote: >> >>> >>> >>> >>>> During the fitting of the Plexiglass canopy on my RV-8, I managed >>>> to put some pretty disheartening scratches in the windscreen >>>> section. >>> >>>> Matt Dralle >>>> RV-8 #82880 >>> >>> Hi Matt: >>> >>> I imagine most all of us Kolb builders and flyers have Lexan >>> windshields, doors, and windows. >>> >>> How does this product work on Lexan? or will it work on Lexan? >>> >>> I tried to clean up a Lexan windshield, many years ago, with a >>> product that was highly advertised in aviation circles back then. >>> Ended up trashing the whole thing after the Lexan became cloudy and >>> remained that way. >>> >>> Lexan is much softer than Plexiglass, thus we can bend it to >>> extreme without fear of breaking. >>> >>> john h >>> Marysvale, UT >>> >>> >>> >> >> >> >> >> > > ________________________________ Message 7 _____________________________________ Time: 08:16:38 AM PST US Subject: Kolb-List: torque on various bolts From: "cristalclear13" I am replacing the rubber engine mounts for my Rotax 503 on my Mark II. Travis is sending me the new mounts. I thought I'd ask you guys what I should be torquing those bolts to (that mount the engine on-not the mount itself). The bolts are AN6-27A. I'm also going to replace the bolts and nuts on my propeller. I found in my paperwork somewhere that they should be torqued to 110 in lbs. Does that sound right? Those bolts are AN5-34A and I have a 66" wood prop in case you're wondering. -------- Cristal Waters Kolb Mark II Twinstar Rotax 503 DCSI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=215549#215549 ________________________________ Message 8 _____________________________________ Time: 09:38:55 AM PST US Subject: Kolb-List: Re: My other hobby From: "grantr" Its a Thunder Tiger pro 46 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=215566#215566 ________________________________ Message 9 _____________________________________ Time: 10:53:45 AM PST US From: "John Hauck" Subject: Re: Kolb-List: Re: My other hobby Grant: Is that a replacement for the dastardly expensive, however well matched and performing Kolb powerplant, the 912ULS? john h Circleville, UT > > Its a Thunder Tiger pro 46 ________________________________ Message 10 ____________________________________ Time: 11:19:36 AM PST US From: "Richard & Martha Neilsen" Subject: Re: Kolb-List: Re: My other hobby John Out of your mouth (well your fingers), well I have to agree but from you never less surprised. I have had enough of winter!!! Two weeks and we will be heading for Florida. In spited of what our jetpilot says it isn't a IFR only state. Leaving the Kolb at home in Michigan again this winter. Do not archive Rick Neilsen Redrive VW powered MKIIIC ----- Original Message ----- From: "John Hauck" Sent: Friday, November 21, 2008 1:53 PM Subject: Re: Kolb-List: Re: My other hobby > > Grant: > > Is that a replacement for the dastardly expensive, however well matched > and performing Kolb powerplant, the 912ULS? > > john h > Circleville, UT > > >> >> Its a Thunder Tiger pro 46 > > > ________________________________ Message 11 ____________________________________ Time: 12:52:15 PM PST US Subject: Kolb-List: Re: torque on various bolts From: "George Alexander" cristalclear13 wrote: > > > ====SNIP+++++ > I'm also going to replace the bolts and nuts on my propeller. I found in my paperwork somewhere that they should be torqued to 110 in lbs. Does that sound right? Those bolts are AN5-34A and I have a 66" wood prop in case you're wondering. Cristal: Check with your prop manufacturer. It may vary mfg to mfg. e.g. TPI with AN5 bolts calls for 144" lbs +/-15" lbs. -------- George Alexander FS II R503 N709FS http://gtalexander.home.att.net Read this topic online here: http://forums.matronics.com/viewtopic.php?p=215580#215580 ________________________________ Message 12 ____________________________________ Time: 03:21:40 PM PST US From: "Larry Cottrell" Subject: Re: Kolb-List: Re: torque on various bolts Cristal, Don't forget that almost all torque values are listed in inch pounds. I don't know about yours, but my torque wrench is measured in foot pounds. 110 inch pounds converts to 9.16 foot pounds. Google inch pounds to foot pounds to get a converter to use. Larry C ----- Original Message ----- From: George Alexander To: kolb-list@matronics.com Sent: Friday, November 21, 2008 1:51 PM Subject: Kolb-List: Re: torque on various bolts cristalclear13 wrote: > > > ====SNIP+++++ > I'm also going to replace the bolts and nuts on my propeller. I found in my paperwork somewhere that they should be torqued to 110 in lbs. Does that sound right? Those bolts are AN5-34A and I have a 66" wood prop in case you're wondering. Cristal: Check with your prop manufacturer. It may vary mfg to mfg. e.g. TPI with AN5 bolts calls for 144" lbs +/-15" lbs. -------- George Alexander FS II R503 N709FS http://gtalexander.home.att.net Read this topic online here: http://forums.matronics.com/viewtopic.php?p=215580#215580 ------------------------------------------------------------------------- ----- Checked by AVG - http://www.avg.com 11/21/2008 9:37 AM ________________________________ Message 13 ____________________________________ Time: 05:15:44 PM PST US From: "boyd" Subject: RE: Kolb-List: torque on various bolts Cristal... here is a link on my web sight that gives the torque values on bolts. Taken from the Advisory Circular ac 43.13-1B acceptable methods, Techniques, and practices--- Aircraft inspection and repair sept 8 1998. Dept of Transportaion, FAA flight standard service regulatory support division. http://www.brigham.net/~byoung/torque.jpg prop manufactures may have specific torque requirements. Boyd Young Kolb MkIIIC Brigham City Ut Please archive. >>>>>>>>>>>>>>>>>>> I am replacing the rubber engine mounts for my Rotax 503 on my Mark II. Travis is sending me the new mounts. I thought I'd ask you guys what I should be torquing those bolts to (that mount the engine on-not the mount itself). The bolts are AN6-27A. I'm also going to replace the bolts and nuts on my propeller. I found in my paperwork somewhere that they should be torqued to 110 in lbs. Does that sound right? Those bolts are AN5-34A and I have a 66" wood prop in case you're wondering. -------- Cristal Waters Kolb Mark II Twinstar Rotax 503 DCSI ________________________________ Message 14 ____________________________________ Time: 05:46:00 PM PST US From: Eugene Zimmerman Subject: Re: Kolb-List: Re: torque on various bolts Hey, forget google. It is not that difficult. Just take inch pounds and divide by 12 to get foot pounds. Gene On Nov 21, 2008, at 6:20 PM, Larry Cottrell wrote: > Google inch pounds to foot pounds to get a converter to use. ________________________________ Message 15 ____________________________________ Time: 06:34:18 PM PST US From: "Richard Girard" Subject: Re: Kolb-List: torque on various bolts Ditto on use your prop makers spec when torquing the prop bolts.In these days of tools available from darn near everywhere there's no excuse for using a ft. lb. torque wrench to do in. lb. measures, especially trying to do 9 ft. lb. to 12 ft. lb. Get a good 3/8" drive torque wrench calibrated in in. lb. Whether it's a beam type or a click stop type is up to you. If you're unsure try to borrow one and see which you like. A word about wood props. Wood swells and shrinks with the moisture content of the wood. This causes the prop bolt torque to change, mostly on the loosen up side of things. Bad, very bad. Losing a prop or worse, part of a prop can just ruin your whole day. One way to ameliorate the effects of moisture content is the use of spring washers (otherwise known as Belleville washers) between the bolt head and the cover plate for the prop. http://www.casa.gov.au/airworth/awb/61/007.pdf has a decent discussion of the use of Belleville washers. Try McMaster Carr: http://www.mcmaster.com/ pages 1195 to 1197 as a source for them. Rick On Fri, Nov 21, 2008 at 7:14 PM, boyd wrote: > > Cristal... here is a link on my web sight that gives the torque values on > bolts. Taken from the Advisory Circular ac 43.13-1B acceptable methods, > Techniques, and practices--- Aircraft inspection and repair sept 8 1998. > Dept of Transportaion, FAA flight standard service regulatory support > division. > > http://www.brigham.net/~byoung/torque.jpg > > prop manufactures may have specific torque requirements. > > Boyd Young > Kolb MkIIIC > Brigham City Ut > > Please archive. > > >>>>>>>>>>>>>>>>>>> > > > I am replacing the rubber engine mounts for my Rotax 503 on my Mark II. > Travis is sending me the new mounts. I thought I'd ask you guys what I > should be torquing those bolts to (that mount the engine on-not the mount > itself). The bolts are AN6-27A. > > I'm also going to replace the bolts and nuts on my propeller. I found in > my > paperwork somewhere that they should be torqued to 110 in lbs. Does that > sound right? Those bolts are AN5-34A and I have a 66" wood prop in case > you're wondering. > > -------- > Cristal Waters > Kolb Mark II Twinstar > Rotax 503 DCSI > > ________________________________ Message 16 ____________________________________ Time: 09:18:45 PM PST US From: "Larry Cottrell" Subject: Re: Kolb-List: Re: torque on various bolts Gene, I though so too, until I Googled it. I then found that 1 inch pound force = 0.0833333333 foot pounds More about calculator. And Rick, I have looked at all the local shops, not on the computer, and have yet to find a torque wrench that measures inch pounds, for less than $75.00. For that much I will do the conversion. Is too cheap a reason? Larry C Oregon ----- Original Message ----- From: Eugene Zimmerman To: kolb-list@matronics.com Sent: Friday, November 21, 2008 6:45 PM Subject: Re: Kolb-List: Re: torque on various bolts Hey, forget google. It is not that difficult. Just take inch pounds and divide by 12 to get foot pounds. Gene On Nov 21, 2008, at 6:20 PM, Larry Cottrell wrote: Google inch pounds to foot pounds to get a converter to use. ------------------------------------------------------------------------- ----- Checked by AVG - http://www.avg.com 11/21/2008 6:24 PM ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kolb-list Browse Digests http://www.matronics.com/digest/kolb-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.