10-19-2016, 08:43 PM | #1 |
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M4 GTS rollcage welds
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10-19-2016, 08:49 PM | #2 | |
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Thats definitely an eye sore |
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10-20-2016, 08:53 AM | #6 |
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Definitely not machine-welded. Take a look at the frame/bracing welds on a Ferrari - they're much more uniform. I suspect that BMW is using a non-factory provider for the roll cage, as this doesn't look like BMW-quality welding.
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10-20-2016, 10:28 AM | #7 |
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welded in China.
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10-20-2016, 05:11 PM | #9 |
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A lot of welds look like shit then get grinded smooth and people think they look amazing, even if it was a shitty weld.
It's not great, but let's be honest it's probably fine for a hand job. |
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10-21-2016, 06:55 AM | #10 |
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So a good weld is a one that looks 100% aesthetically pleasing as opposed to actually being strong and up to task?
Id rather it was strong than pretty in anything structural tbh |
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10-21-2016, 07:29 AM | #12 |
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Went last night to dealer to look at M4 -GTS.
The roll-cage is great looking - the center X-bracing looks nice in-person. The peripheral junctions look like a custom bike and there was an info tag on the bar. The carbon-fiber hood also has a hand built quality to it, I'll post a pic below. |
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10-21-2016, 08:49 AM | #14 |
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A good weld is one that is uniform, which doesn't create weak points. The one in the first picture is amateurish at best. It's been said that "a good weld looks like a row of nickels".
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10-21-2016, 09:29 AM | #15 |
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These look fine. Based on this, it's safe to say that since it's a low volume hand made part that guy just got a welder who was either rushing home for the evening or had a lazy eye. Either way, still shouldn't be a real structural concern.
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10-21-2016, 09:41 AM | #16 | |
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"Seems like every year someone starts thread asking how to get stack of dime look welding bead or how to make MIG welds look like TIG welds. (Learn to TIG weld.) I can't understand why they want to make bad welds that looks like they were made by a want to be welder with silly idea of how good welds should look. Should base welds on sound weld engineering not fashion fad. Yes exposed welds are part of the design but I cringe when fashionable weld look is more important than proper welds. This reminds me of show ****er spaniels that are bred to look fashonable, not caring that makes them poor hunting dogs and high maintinance pets." |
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10-21-2016, 12:00 PM | #17 |
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In a $133K car, hand done welds SHOULD look like a coins overlaying one another. There's no excuse for welds like the ones depicted, either in a M4 GTS or a $80 Huffy bicycle.
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10-21-2016, 01:00 PM | #18 | |
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10-21-2016, 02:36 PM | #19 |
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The pic shown is a bit rough, but it's not "unsafe" or weak, IMO. I wouldn't be happy with it, either, on a car of that $$
Making dime beads with Moly isn't easy, nor required for it's integrity. Also, has anyone ever tried welding in kung-fu like poses from the inside of a cabin? It's not easy on a bench, with a proper back purge setup. I can't imagine some of the positions these guys would be in to get one of these cages properly fitted, and look stunning too. Not saying it can't be done, but every end product will look different with hand fabrications.
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