I agree that Daystate's painting of the compressor was a poor idea, and reduces the ability of the airflow to cool the compressor. My mechanical engineering expert friends tell me that in the presence of a good airflow the radiative component is not important, but the layer of insulation on the fins is not helping things.
I've seen that many manufacturers occasionally have issues with counterfeit components or materials that get into the supply chain despite efforts to control it. We definitely experienced this many times in procurements in mechanical, electrical and electronics parts even from reputable first line vendors. We could not get pure copper wire or proper graded bolts at one project we were running in China - we eventually had to ship wire, nuts and bolts to the project because they could not get proper components there locally. The supply chains are full of issues. We even received counterfeit electronics directly from network equipment giant Cisco, and counterfeit bolts were found almost everywhere.
The Coltri products were designed and manufactured long before we started using them for Airguns. Many are in service compressing natural gas for cars, we don't hear about garages blowing up (which would make great news). The pricing has come down and and competition has caused pressure on the cost management of the components and production. QA is one area that always gets pushed. One friend of mine is a Quality Engineer and when things are running well he often finds himself out of a job. They love him when he is fixing things but they quickly forget when things are running well. So we have purchasers working hard to save a buck on parts and machining, and less QA. Why did the valve crack here? Probably bad material, incorrect machining or other production flaws and inadequate QA. Perhaps the purchaser found some cheaper material, or a lower cost vendor. It happens all too frequently.
Heat is definitely a problem, but when things are designed and built to handle it we hardly worry about it and rarely have trouble. The exhaust system of a car is pretty hot, but running it for hours is rarely a problem. it is a problem if there are materials or manufacturing errors. Lots of these compressors run without trouble, so this indicates the design must be fundamentally reasonable. Some fail, that likely indicates the implementation is inconsistent.
I've seen that many manufacturers occasionally have issues with counterfeit components or materials that get into the supply chain despite efforts to control it. We definitely experienced this many times in procurements in mechanical, electrical and electronics parts even from reputable first line vendors. We could not get pure copper wire or proper graded bolts at one project we were running in China - we eventually had to ship wire, nuts and bolts to the project because they could not get proper components there locally. The supply chains are full of issues. We even received counterfeit electronics directly from network equipment giant Cisco, and counterfeit bolts were found almost everywhere.
The Coltri products were designed and manufactured long before we started using them for Airguns. Many are in service compressing natural gas for cars, we don't hear about garages blowing up (which would make great news). The pricing has come down and and competition has caused pressure on the cost management of the components and production. QA is one area that always gets pushed. One friend of mine is a Quality Engineer and when things are running well he often finds himself out of a job. They love him when he is fixing things but they quickly forget when things are running well. So we have purchasers working hard to save a buck on parts and machining, and less QA. Why did the valve crack here? Probably bad material, incorrect machining or other production flaws and inadequate QA. Perhaps the purchaser found some cheaper material, or a lower cost vendor. It happens all too frequently.
Heat is definitely a problem, but when things are designed and built to handle it we hardly worry about it and rarely have trouble. The exhaust system of a car is pretty hot, but running it for hours is rarely a problem. it is a problem if there are materials or manufacturing errors. Lots of these compressors run without trouble, so this indicates the design must be fundamentally reasonable. Some fail, that likely indicates the implementation is inconsistent.
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