http://groups.yahoo.com/group/winchdesign/ Winch Design Thu, 13 Jun 2013 13:34:37 GMT n141sf http://groups.yahoo.com/group/winchdesign/message/11416 http://groups.yahoo.com/group/winchdesign/message/11416 I've been taking another look at "Weaver beam flanges" for possible use in building drums. (http://rdd.me/ltpkzxga) They're available in up to 1400mm Wed, 12 Jun 2013 09:09:13 GMT Semih Oksay http://groups.yahoo.com/group/winchdesign/message/11415 http://groups.yahoo.com/group/winchdesign/message/11415 Both TIG and MIG use argon as shield. Depending on what material you weld, you can use carbon dioxide with carbon steel. We use 95% argon 5% carbon dioxide for Wed, 12 Jun 2013 09:07:22 GMT Semih Oksay http://groups.yahoo.com/group/winchdesign/message/11414 http://groups.yahoo.com/group/winchdesign/message/11414 Both TIG and MIG use argon as shield. Depending on what material you weld, you can use carbon dioxide with carbon steel. We use 95% argon 5% carbon dioxide for Tue, 11 Jun 2013 22:45:37 GMT Frank Whiteley http://groups.yahoo.com/group/winchdesign/message/11413 http://groups.yahoo.com/group/winchdesign/message/11413 Argon/CO2 75/25% for most steel. Argon for aluminum and stainless. I like TIG for nice and specialty work. http://www.youtube.com/watch?v=WSi5eRTIOa4 But MIG Tue, 11 Jun 2013 18:25:41 GMT n141sf http://groups.yahoo.com/group/winchdesign/message/11412 http://groups.yahoo.com/group/winchdesign/message/11412 Of course it would warp if it wasn't tacked first. Tack, then run a continuous weld. I'll have to review what I know about MIG. I do know I can product Tue, 11 Jun 2013 17:50:32 GMT Semih Oksay http://groups.yahoo.com/group/winchdesign/message/11411 http://groups.yahoo.com/group/winchdesign/message/11411 Uli find a better welder and use MIG, not TIG. MIG penetrates a lot in hands of a well educated and experienced welder. I have 10 TIG and 5 MIG stations in my Tue, 11 Jun 2013 17:32:31 GMT Uli, Winchmeister http://groups.yahoo.com/group/winchdesign/message/11410 http://groups.yahoo.com/group/winchdesign/message/11410 ... Hi Bill, the heat of a welding arc is not only influenced by Amps and Volts. The atmosphere in which the arc 'burns' has a great influence on the actual Mon, 10 Jun 2013 06:03:36 GMT bumper http://groups.yahoo.com/group/winchdesign/message/11409 http://groups.yahoo.com/group/winchdesign/message/11409 Uli, When using TIG or MIG, you need to be out of the wind or the gas shield will be blown away which will cause weld oxidization and introduce porosity. Mon, 10 Jun 2013 03:25:17 GMT n141sf http://groups.yahoo.com/group/winchdesign/message/11408 http://groups.yahoo.com/group/winchdesign/message/11408 ... Yep, that's how TIG works. If you need fill metal, you can wrap wire around the drum in the weld area or you can feed the rod by hand into the puddle as Mon, 10 Jun 2013 03:04:12 GMT Wick Wilkinson http://groups.yahoo.com/group/winchdesign/message/11407 http://groups.yahoo.com/group/winchdesign/message/11407 One pass, correctly done with Tig should do it. Wick Sent from my iPad Mon, 10 Jun 2013 02:57:31 GMT Uli, Winchmeister http://groups.yahoo.com/group/winchdesign/message/11406 http://groups.yahoo.com/group/winchdesign/message/11406 Hi Bill, ... Thanks! ;-) The TIG machine we may have access to do not have an automatic wire-feeder. The torch has to be positioned and handled manually and Mon, 10 Jun 2013 01:59:13 GMT n141sf http://groups.yahoo.com/group/winchdesign/message/11405 http://groups.yahoo.com/group/winchdesign/message/11405 Condolences on the drum. I like the idea of TIG welding. I'd suggest setting up a jig with a speed-controlled turntable and the torch clamped in the perfect Mon, 10 Jun 2013 01:40:39 GMT Uli, Winchmeister http://groups.yahoo.com/group/winchdesign/message/11404 http://groups.yahoo.com/group/winchdesign/message/11404 Hi all, the drum of our winch suffered a structural failure after around 1,200 launches - most of them (~1,000) using Spectra. The first analyses shows that Fri, 17 May 2013 15:57:08 GMT n141sf http://groups.yahoo.com/group/winchdesign/message/11403 http://groups.yahoo.com/group/winchdesign/message/11403 ... Thanks for the kind words, Marc. I'll do whatever I can to get photo credits right but writing and publishing a magazine is a tricky business especially Thu, 16 May 2013 16:31:02 GMT Marc Ramsey http://groups.yahoo.com/group/winchdesign/message/11402 http://groups.yahoo.com/group/winchdesign/message/11402 No one has mentioned it, yet, so I wanted to be the first to thank Bill for his new column in SSA Soaring Magazine called "Winching World". It's off to a good