---------------------------------------------------------- Lightning-List Digest Archive --- Total Messages Posted Tue 03/15/11: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:36 AM - Re: MATCO Wheels (Mark Stauffer) 2. 07:44 AM - MATCO wheels and brakes - take 2 (Mark Stauffer) 3. 09:15 PM - Re: Matco wheels and brakes (Harry Weber) ________________________________ Message 1 _____________________________________ Time: 05:36:37 AM PST US From: "Mark Stauffer" Subject: RE: Lightning-List: MATCO Wheels This is a part number that MATCO came up with. It means: Socket Head Cap Screw 1/4" x 20 pitch threads x 1.25" long. It does not delineate a hardness of the bolt, you'll have to call MATCO for that information. Hope this helps! Best regards, Mark -----Original Message----- From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com]On Behalf Of EAFerguson@AOL.COM Sent: Monday, March 14, 2011 8:36 PM To: lightning-list@matronics.com Subject: Re: Lightning-List: MATCO Wheels In a message dated 3/14/2011 1:14:40 P.M. Eastern Daylight Time, mark@flylightning.net writes: SHCS .25 - 20 x 1.25 SHCS Mark et al. Please translate the SHCS code. Is this a bolt grade? Is it an AN bolt? The listed torque sounds low for a 1/4" bolt. BTW, I have had no problems with mine at 350 hours and 4 tire changes, but I think next annual I might change them for new and of course use the torque wrench to tighten. Earl ________________________________ Message 2 _____________________________________ Time: 07:44:47 AM PST US From: "Mark Stauffer" Subject: Lightning-List: MATCO wheels and brakes - take 2 I received an e-mail from George Happ at MATCO last night regarding my post to the Lightning List. I posted some wrong information yesterday and he wanted to make sure that the Lightning community had the correct torque specs. Bottom line: The correct torque value for the through bolts (PN: SHCS .25-20x1.25") is 99 INCH pounds. George told me that more problems could result from UNDER torque rather than over torque of these through bolts so please take care when assembling your wheels. Also, George has updated the web site with a new installation booklet that spells out everything you need to know about installing and maintaining his products. This book clearly lists all the correct torque values on page 11. Please take a look at this manual since it contains tons of useful information. http://www.matcomfg.com/GeneralWheelBrakeInformation-idv-2665-23.html I will make sure that we get this information into the newsletter as well. I think this speaks highly of George and MATCO. One of our community members called him, he saw conflicting information on his web site and then fixed it - in less than 12 hours. Then he e-mailed and called me to make sure we had the correct information so we could let our customers know. Best regards, Mark Mark Stauffer Production Manager Arion Aircraft 2842 Hwy 231 North Shelbyville, TN 37160 (931) 680-1781 ________________________________ Message 3 _____________________________________ Time: 09:15:44 PM PST US From: Harry Weber Subject: Re: Lightning-List: Matco wheels and brakes Doug: I had Clevelands on my Glasair and traded them for Matco. The difference in stopping power was incredible. Matco support is the best and they will take the time to answer any questions. They frequent air shows also for a first hand talk. Just my opinion as I'm not flying my Lightning yet but the comparison probably still applies. Harry ----- Original Message ----- From: "Bernard Melendez, Jr." Sent: Monday, March 14, 2011 3:00:49 PM Subject: Re: Lightning-List: Matco wheels and brakes Doug, I have not heard of other brands of aircraft wheels having similar problems. And I addressed it as a "possible" defect, not as a definitive defect. My apologies if I ruffled some feathers. I was merely inquiring about other wheel brand possibilities and/or changes that could be made to improve the application. Again, as I have not reached this stage of my build, it is not an issue for me...yet. Nor am I questioning that "Matcos are the lightest, simplest, best supported and most economical brake systems out there", though that may be open for debate. My questions were meant to be thought-provoking and to lead others to consider this issue or other options. Regards, Bernardo Melendez --- On Mon, 3/14/11, Kayberg@AOL.COM wrote: From: Kayberg@AOL.COM Subject: Re: Lightning-List: Matco wheels and brakes In a message dated 3/14/2011 11:05:22 A.M. Eastern Daylight Time, n45bm@yahoo.com writes: Having a wheel come unglued while landing or on take off and possibly turning your shiny Lightning into fiberglass splinters can be embarrassing, to put it mildly. This is an issue that should be addressed and solution(s) found to correct this problem. Would we be better off using different wheels and brakes like Cleveland's, for example? Is that a viable solution, and could they be fitted or would the axle and wheel attach need to be redesigned for that system, or another better system? In any event, responsible people should take the lead and address this possible defect in design and come up with a reasonable solution, in my humble opinion. Bernardo Melendez, Kit #110 What design defect? Reasonable people should not overtighten or undertighten the screws. The Matcos are the lightest, simplest, best supported and most economical brake systems out there. Only a couple people have had problems and they were addressed. The brakes you were shipped in your kit were updated to deal with the problem. As long as you install them correctly , you should be fine. Doug Koenigsberg ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message lightning-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Lightning-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/lightning-list Browse Digests http://www.matronics.com/digest/lightning-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.