{"id":9282,"date":"2017-10-19T08:00:24","date_gmt":"2017-10-19T16:00:24","guid":{"rendered":"http:\/\/corksport.com\/blog\/?p=9282"},"modified":"2018-09-13T12:58:35","modified_gmt":"2018-09-13T20:58:35","slug":"the-mazda-3-rear-motor-mount-2-0-back-better","status":"publish","type":"post","link":"https:\/\/corksport.com\/blog\/the-mazda-3-rear-motor-mount-2-0-back-better\/","title":{"rendered":"The Mazda 3 Rear Motor Mount 2.0: Back & Better"},"content":{"rendered":"

We here at CorkSport are proud to announce the relaunch of the Mazda 3 Rear Motor Mount.<\/strong> <\/span><\/h2>\n

Yes, you read that correct, this is a re-launch.<\/strong>\u00a0At CorkSport we push ourselves to design and develop new and interesting products every day, with that, we try new and innovative manufacturing designs and methods in an attempt to create exceptional, competitive, cost-effective products for our loyal customers. <\/span><\/h4>\n

Sometimes those new and innovative manufacturing methods end up not being as awesome as we originally expected. This is just part of the designing and learning process. Let\u2019s get into the details.<\/strong><\/span><\/p>\n

The original, let\u2019s call it V1, Mazda3 RMM used a new-to-us manufacturing method of applying the polyurethane to the billet aluminum body called vulcanizing.<\/strong> The billet aluminum body and the steel sleeves are mounted in a fixture then liquid polyurethane was poured into the assembly and cooled until the polyurethane had set to the final hardness. \u00a0This process appeared to be very promising; each part was set up identically, it was nearly impossible to have any missing parts not sent to you, and most importantly the polyurethane was adhered to the billet aluminum body and therefore could not fall out. \u00a0More on that last bit later. <\/span><\/p>\n

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We moved forward with the manufacturing method and had a few samples made with various polyurethane durometers ranging from 60A to 80A. \u00a0After various testing, we determined that 70A was the best compromise of response and NVH (Noise, Vibration, Harshness) experienced by the driver. We continued testing for a few months to verify long-term durability and found no issues. \u00a0Hooray!<\/strong> We moved forward with production to get this new great Mazda6 RMM out the door to you. <\/span><\/p>\n

Unfortunately, it appears that our testing period just wasn\u2019t quite long enough. \u00a0Eventually, the polyurethane would fail but fail in a style we had never experienced before. \u00a0Long story short, polyurethane has excellent compression strength compared to the tensile strength. \u00a0The polyurethane was being pulled\/split apart due to the forces of the engine. \u00a0<\/strong><\/span><\/p>\n

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Now we had a few options of how to redesign the Mazda 6 Rear Motor Mount after going through the failure analysis. \u00a0<\/span><\/h3>\n