Crazycanuck Posted November 17, 2009 Share Posted November 17, 2009 I am about to place my first order from ACS and I am selecting the epoxy to use for the project. I am going to use MGS, but are there any opinions out there about System 285 vs. System 335? Is System 285 better in some way to justify the higher price? Quote Crazy Canuck Toronto, Ontario, Canada Cozy MKIV #MK1536 Link to comment Share on other sites More sharing options...
Steve Innova Posted November 17, 2009 Share Posted November 17, 2009 A good reason to use MGS 285 is that it has a resin: hardener ratio of 2:1 by volume, which makes it very easy to check the accuracy of the epoxy pump. Quote Link to comment Share on other sites More sharing options...
Jerry Schneider Posted November 17, 2009 Share Posted November 17, 2009 The pros: The 285 has higher Tg and strength properties. (Which are not significant in our application.) It also wets out glass cloth a bit easier due to it's lower viscosity. (The 335 is still better than most of the other competitors.) On the cons: 285 is MUCH more caustic to the skin and wallet. To me, the 335 is a more practical and possibly mildly safer product (health-wise), to use. The increased cost, IMHO, is not justified by the advantages. Quote "I run with scissors." Cozy MKIV N85TT Phase One Testing http://home.earthlink.net/~jerskip Link to comment Share on other sites More sharing options...
Big Steve Posted November 17, 2009 Share Posted November 17, 2009 I have one other thing you might think about. When I started this project 3 years ago I was planning on using 335 resin I really thought it would be nice to use a resin that soaked in without a heat gun. Well it was not available for almost 3 months. I was anxious to start so I ordered eze poxy it was a bit cheaper. Now I am glad that I did It is much better stuff for building fuel tanks and I like brown airplanes. Just keep in mind some resins are made in this country are sometimes easier to get than resins made in other countries. my .02 Plus buying american stimulates our economy. STeve Quote Steve Harmon Lovin Life in Idaho Cozy IV Plans #1466 N232CZ http://websites.expercraft.com/bigsteve/ Working on Chapter 19,21 Link to comment Share on other sites More sharing options...
rickh Posted November 17, 2009 Share Posted November 17, 2009 What Jerry and STeve said. One advantage to a higher Tg might be that you could paint your plane in something other than white? Attached PDF, it's somewhat old, may be an interesting read. Rick 2006_06_Hunter_Resin_Price_Table.pdf Quote Rick Hall; MK-IV plans #1477; cozy.zggtr.org Build status: 1-7, bits of 8-9, 10, 14 done! Working on engine/prop/avionics. Link to comment Share on other sites More sharing options...
Jerry Schneider Posted December 30, 2009 Share Posted December 30, 2009 Here's a nice PDF of an Excel spreadsheet for those who want to use MGS 335 and a digital scale (I know..... BLASPHEMY!!). mgs335mix.pdf 1 Quote "I run with scissors." Cozy MKIV N85TT Phase One Testing http://home.earthlink.net/~jerskip Link to comment Share on other sites More sharing options...
Larry Wiechman Posted December 31, 2009 Share Posted December 31, 2009 Buy local. Country Canada City Dundas Company Airheart Distributing Fon+1905 381-0051 Fax+1905 62797-75 E-Mailairheart@airheart.on.ca Quote Link to comment Share on other sites More sharing options...
Cozy1200 Posted December 31, 2009 Share Posted December 31, 2009 Buy local. FYI. I tried to buy from them, but with the new laws and taxes, it didn't work out. Had I been a Canadian, they seem like it was more feasible. Definitely give them a call. Quote Drew Chaplin (aka the Foam Whisperer) --- www.Cozy1200.com - I'm a builder now! --- Brace for impact... Link to comment Share on other sites More sharing options...
Spodman Posted January 3, 2010 Share Posted January 3, 2010 Had I been a Canadian...Being a Canardian doesn't count eh? Quote Mark Spedding - SpodmanDarraweit Guim - AustraliaCozy IV #1331 - Chapter 09www.mykitlog.com/Spodmanwww.sites.google.com/site/thespodplane/the-spodplane Link to comment Share on other sites More sharing options...
Jon Matcho Posted March 27, 2015 Share Posted March 27, 2015 Here's a nice PDF of an Excel spreadsheet for those who want to use MGS 335 and a digital scale (I know..... BLASPHEMY!!). I've had great success with a digital scale. I prefer it in fact, and find it much more accurate and have never had to rebuild a pump. I now have a pump, but have not yet put it to any use... we'll see. Quote Jon Matcho Builder & Canard Zone Admin Now: Rebuilding Quickie Tri-Q200 N479E Next: Resume building a Cozy Mark IV Link to comment Share on other sites More sharing options...
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