Bought stepper motors from Pololu. They sell Chinese industrial motion parts to robotic hobbyists and kids.
Their motors had a 100% failure rate, the bearings failed in all motors and very quickly.
Disassembled one, found the cause of the problem - no bearing preload,. Engineer, not a hobbyist.
Told Pololu so that of course, an HONEST company could take immediate corrective action to make sure no other Customers got bad motors. They could notify their Supplier to make sure no more defective motors found their way to Customers that dont have engineering experience to find the failures..
I received this Email in response to the several hours of my time spent in reverse engineering
the failed motors:
"Hello, Dave. I am not sure what you are hoping to accomplish with an email like this. I do not understand your seemingly smug claim of knowing where the motors come from (we say it right on the product page), and it sounds like you are trying to accuse us of something without actually saying what it is. Do you think that we have somehow tampered with those motors to make them worse? Sincerely, Ben Schmidel (702) 262-6648 pololu.com .............................. Pololu Corporation 920 Pilot Rd. Las Vegas, NV 89119 USA"
as to their "smug claim" I bought identical motors with the identical part number out of a factory in China, and the motors I bought ALL WORK.
Interesting..attacking me as smug...Really?
Nothing says "were selling GARBAGE parts to uneducated Hobbyists that cant catch us selling garbage, and know it" like retaliating like this.
Pololu Corporation Reviews
Bought stepper motors from Pololu. They sell Chinese industrial motion parts to robotic hobbyists and kids.
Their motors had a 100% failure rate, the bearings failed in all motors and very quickly.
Disassembled one, found the cause of the problem - no bearing preload,. Engineer, not a hobbyist.
Told Pololu so that of course, an HONEST company could take immediate corrective action to make sure no other Customers got bad motors. They could notify their Supplier to make sure no more defective motors found their way to Customers that dont have engineering experience to find the failures..
I received this Email in response to the several hours of my time spent in reverse engineering
the failed motors:
"Hello, Dave. I am not sure what you are hoping to accomplish with an email like this. I do not understand your seemingly smug claim of knowing where the motors come from (we say it right on the product page), and it sounds like you are trying to accuse us of something without actually saying what it is. Do you think that we have somehow tampered with those motors to make them worse? Sincerely, Ben Schmidel (702) 262-6648 pololu.com .............................. Pololu Corporation 920 Pilot Rd. Las Vegas, NV 89119 USA"
as to their "smug claim" I bought identical motors with the identical part number out of a factory in China, and the motors I bought ALL WORK.
Interesting..attacking me as smug...Really?
Nothing says "were selling GARBAGE parts to uneducated Hobbyists that cant catch us selling garbage, and know it" like retaliating like this.