---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Fri 07/15/11: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:36 AM - Re: Tire /tyre landing incident /accident (h&jeuropa) 2. 08:41 AM - Re: Re: Tire /tyre landing incident /accident (Jeff B) 3. 09:09 AM - Re: Re: Tire /tyre landing incident /accident (Peter Zutrauen) 4. 10:26 AM - Re: Re: Tire /tyre landing incident /accident (Karl Heindl) ________________________________ Message 1 _____________________________________ Time: 07:36:53 AM PST US Subject: Europa-List: Re: Tire /tyre landing incident /accident From: "h&jeuropa" We joined the flat tire mono club this past Tuesday, only we think ours had a different cause, not rubbing of the tube in the tire. We have been doing a lot of training on a hard surface runway. The tire and tube had in excess of 500 landings on it. We thought before Heather flew on Tuesday that the tire looked a little low and thought the same before Jim flew after Heather (she did 7 T/O and ldgs). On Jim's 7th landing, the plane slowed quickly and there was a smell of rubber. When we took the wheel/tire apart we found that the tube was perfect except the valve stem was pulled off. No holes or rub marks on the tube. Tire was damaged with a couple of broken cords and a cut on the outside from the wheel. Our conclusion is that the tire was low (we normally run 18 psi) and over the course of 14 T/O and ldgs with some swerving on the runway, the tire pulled from the bead of the wheel and rotated causing the valve stem to be pulled off. The damaged tire was a US Speciality Tire AIR TRAC size 7.00 x 6 6 ply rating and the tube was a Cheng Sing (we think we got the tube from Europa UK). We were able to get a Goodyear Flight Custom II tire locally and fitted our spare tube that is Chinese and purchased from Wicks Aircraft supply, Part Number TB-MTAT8X6 (tubes with the 90 deg valve stem are not listed on Dresser Tire or ACS websites). The only marking on the tube is "Quality Assured" and some Chinese characters! The new tire seems to have a flatter tread and doesn't bulge as much. Landings yesterday with it on pavement were no different than previously. We always use a lot of talcum when fitting a tube. We inflate a new tube outside the tire first to get out wrinkles. Then we deflate it, talcum it (talcum the tire too), insert into the tire and inflate. Then deflate again, and fit the wheel (usually twice since we forget the spacer!!). Inflate again and deflate again. Finally inflate the final time to 18 psi. Be sure the valve stem is aligned with the red dot on the tire for balance. When we got our Europa wheel, we found the opening for the valve stem was quite rough. We filed and sanded it to make it as large and smooth as possible. We used Scotchbrite to clean the wheel before fitting the new tire and tube. There was a lot of rubber debris on the bead and even inside the wheel. Jim & Heather Read this topic online here: http://forums.matronics.com/viewtopic.php?p=346502#346502 ________________________________ Message 2 _____________________________________ Time: 08:41:36 AM PST US From: Jeff B Subject: Re: Europa-List: Re: Tire /tyre landing incident /accident First, I fly a tri-gear, so take this with a grain of salt. In racing, it is common to "screw" the tire to the rim, using short pointed sheet metal screw. Would this not be workable in the nomowheel to prevent the tire slipping on the wheel? Jeff - Baby Blue On 7/15/2011 9:33 AM, h&jeuropa wrote: > --> Europa-List message posted by: "h&jeuropa" > > We joined the flat tire mono club this past Tuesday, only we think ours had a different cause, not rubbing of the tube in the tire. > > We have been doing a lot of training on a hard surface runway. The tire and tube had in excess of 500 landings on it. We thought before Heather flew on Tuesday that the tire looked a little low and thought the same before Jim flew after Heather (she did 7 T/O and ldgs). On Jim's 7th landing, the plane slowed quickly and there was a smell of rubber. > > When we took the wheel/tire apart we found that the tube was perfect except the valve stem was pulled off. No holes or rub marks on the tube. Tire was damaged with a couple of broken cords and a cut on the outside from the wheel. > > Our conclusion is that the tire was low (we normally run 18 psi) and over the course of 14 T/O and ldgs with some swerving on the runway, the tire pulled from the bead of the wheel and rotated causing the valve stem to be pulled off. > > The damaged tire was a US Speciality Tire AIR TRAC size 7.00 x 6 6 ply rating and the tube was a Cheng Sing (we think we got the tube from Europa UK). > > We were able to get a Goodyear Flight Custom II tire locally and fitted our spare tube that is Chinese and purchased from Wicks Aircraft supply, Part Number TB-MTAT8X6 (tubes with the 90 deg valve stem are not listed on Dresser Tire or ACS websites). The only marking on the tube is "Quality Assured" and some Chinese characters! The new tire seems to have a flatter tread and doesn't bulge as much. Landings yesterday with it on pavement were no different than previously. > > We always use a lot of talcum when fitting a tube. We inflate a new tube outside the tire first to get out wrinkles. Then we deflate it, talcum it (talcum the tire too), insert into the tire and inflate. Then deflate again, and fit the wheel (usually twice since we forget the spacer!!). Inflate again and deflate again. Finally inflate the final time to 18 psi. Be sure the valve stem is aligned with the red dot on the tire for balance. > > When we got our Europa wheel, we found the opening for the valve stem was quite rough. We filed and sanded it to make it as large and smooth as possible. We used Scotchbrite to clean the wheel before fitting the new tire and tube. There was a lot of rubber debris on the bead and even inside the wheel. > > Jim& Heather > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=346502#346502 > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > > ________________________________ Message 3 _____________________________________ Time: 09:09:27 AM PST US From: Peter Zutrauen Subject: Re: Europa-List: Re: Tire /tyre landing incident /accident ....and in dirtbike/motocycling, the low-pressure tire is clamped to the inside of the rim (a "rimlock") and tightened with a with a simple bolt. as per: http://www.motorcycle-superstore.com/2/9/203/4355/ITEM/Motion-Pro-Alloy-Rim-Lock.aspx Pity there nothing similar for the low pressure Europa wheel. Cheers, Pete A239 On Fri, Jul 15, 2011 at 11:38 AM, Jeff B wrote: > > First, I fly a tri-gear, so take this with a grain of salt. In racing, it > is common to "screw" the tire to the rim, using short pointed sheet metal > screw. Would this not be workable in the nomowheel to prevent the tire > slipping on the wheel? > > Jeff - Baby Blue > > On 7/15/2011 9:33 AM, h&jeuropa wrote: > >> --> Europa-List message posted by: "h&jeuropa" >> > >> >> We joined the flat tire mono club this past Tuesday, only we think ours >> had a different cause, not rubbing of the tube in the tire. >> >> We have been doing a lot of training on a hard surface runway. The tire >> and tube had in excess of 500 landings on it. We thought before Heather >> flew on Tuesday that the tire looked a little low and thought the same >> before Jim flew after Heather (she did 7 T/O and ldgs). On Jim's 7th >> landing, the plane slowed quickly and there was a smell of rubber. >> >> When we took the wheel/tire apart we found that the tube was perfect >> except the valve stem was pulled off. No holes or rub marks on the tube. >> Tire was damaged with a couple of broken cords and a cut on the outside >> from the wheel. >> >> Our conclusion is that the tire was low (we normally run 18 psi) and over >> the course of 14 T/O and ldgs with some swerving on the runway, the tire >> pulled from the bead of the wheel and rotated causing the valve stem to be >> pulled off. >> >> The damaged tire was a US Speciality Tire AIR TRAC size 7.00 x 6 6 ply >> rating and the tube was a Cheng Sing (we think we got the tube from Europa >> UK). >> >> We were able to get a Goodyear Flight Custom II tire locally and fitted >> our spare tube that is Chinese and purchased from Wicks Aircraft supply, >> Part Number TB-MTAT8X6 (tubes with the 90 deg valve stem are not listed on >> Dresser Tire or ACS websites). The only marking on the tube is "Quality >> Assured" and some Chinese characters! The new tire seems to have a flatter >> tread and doesn't bulge as much. Landings yesterday with it on pavement >> were no different than previously. >> >> We always use a lot of talcum when fitting a tube. We inflate a new tube >> outside the tire first to get out wrinkles. Then we deflate it, talcum it >> (talcum the tire too), insert into the tire and inflate. Then deflate >> again, and fit the wheel (usually twice since we forget the spacer!!). >> Inflate again and deflate again. Finally inflate the final time to 18 psi. >> Be sure the valve stem is aligned with the red dot on the tire for balance. >> >> When we got our Europa wheel, we found the opening for the valve stem was >> quite rough. We filed and sanded it to make it as large and smooth as >> possible. We used Scotchbrite to clean the wheel before fitting the new >> tire and tube. There was a lot of rubber debris on the bead and even inside >> the wheel. >> >> Jim& Heather >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/**viewtopic.php?p=346502#346502 >> >> >> >> >> >> >> >> >> >> >> >> >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> >> >> > > ________________________________ Message 4 _____________________________________ Time: 10:26:03 AM PST US From: Karl Heindl Subject: RE: Europa-List: Re: Tire /tyre landing incident /accident I remember once listening to a presentation by a professional engineer and pilot at an EAA meeting.He pointed out that it is very important to make a permanent mark on the rim(s) and on the tire after tube installation. And t his should be checked as part of every preflight inspection. Apparently thi s slippage is quite common=2C regardless of aircraft type=2C when landing o n hard runways. Karl > Subject: Europa-List: Re: Tire /tyre landing incident /accident > From: butcher43@att.net > Date: Fri=2C 15 Jul 2011 07:33:58 -0700 > To: europa-list@matronics.com > > > We joined the flat tire mono club this past Tuesday=2C only we think ours had a different cause=2C not rubbing of the tube in the tire. > > We have been doing a lot of training on a hard surface runway. The tire and tube had in excess of 500 landings on it. We thought before Heather fl ew on Tuesday that the tire looked a little low and thought the same before Jim flew after Heather (she did 7 T/O and ldgs). On Jim's 7th landing=2C the plane slowed quickly and there was a smell of rubber. > > When we took the wheel/tire apart we found that the tube was perfect exce pt the valve stem was pulled off. No holes or rub marks on the tube. Tire was damaged with a couple of broken cords and a cut on the outside from th e wheel. > > Our conclusion is that the tire was low (we normally run 18 psi) and over the course of 14 T/O and ldgs with some swerving on the runway=2C the tire pulled from the bead of the wheel and rotated causing the valve stem to be pulled off. > > The damaged tire was a US Speciality Tire AIR TRAC size 7.00 x 6 6 ply ra ting and the tube was a Cheng Sing (we think we got the tube from Europa UK ). > > We were able to get a Goodyear Flight Custom II tire locally and fitted o ur spare tube that is Chinese and purchased from Wicks Aircraft supply=2C P art Number TB-MTAT8X6 (tubes with the 90 deg valve stem are not listed on D resser Tire or ACS websites). The only marking on the tube is "Quality Ass ured" and some Chinese characters! The new tire seems to have a flatter tr ead and doesn't bulge as much. Landings yesterday with it on pavement were no different than previously. > > We always use a lot of talcum when fitting a tube. We inflate a new tube outside the tire first to get out wrinkles. Then we deflate it=2C talcum it (talcum the tire too)=2C insert into the tire and inflate. Then deflate again=2C and fit the wheel (usually twice since we forget the spacer!!). Inflate again and deflate again. Finally inflate the final time to 18 psi. Be sure the valve stem is aligned with the red dot on the tire for balanc e. > > When we got our Europa wheel=2C we found the opening for the valve stem w as quite rough. We filed and sanded it to make it as large and smooth as p ossible. We used Scotchbrite to clean the wheel before fitting the new tir e and tube. There was a lot of rubber debris on the bead and even inside t he wheel. > > Jim & Heather > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=346502#346502 > > > > > > > =========== =========== =========== =========== > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.