Thanks for the replys everyone! I think with the glue and solder problems I’ll go a different route. I’ve been looking at the TB motors as well. Are those of better quality? Or will they have the same glue and solder problems?
@torqueboards has some good motors, been using them for years. @JLabs sealed can 6374s are bad ass too.
The thing to realize is that most motors are not great when looking for perfection. The mostly all have something that isn’t great about them.
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I have tried 6380 haven’t tried sealed ones but I guess the biggest issue in the first place is heat my motors stay at 50-60 degrees so it’s not overheating but that much is enough to get most glue epoxy brittle or loose.
I have a video but the sound captured by phone but its nothing compared to the real one. But you can hear how motors making high pitch vibrating noise when accelerating its when magnets vibrate or jump off the bell to stator…
It now even overtakes the noise of inner gear drive…
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I’ve not been very impressed with APS motors. I don’t have a massive level of usage either, just the 2 types that I used weren’t great.
I would suggest you buy some Maytech motors and disassemble before you send them and apply Hugh temp ling cure epoxy to the magnets, let cure for 72 hours and then install.
Seems like heat is most of your problem, mine rarely get over 34 degrees Celsius. 50-60 is really high.
In video its not APS motor its 6374 from European vendor. APS and others all sitting with loose magnets at the moment I am just zero fucks with them until they completely break
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I will be trying out 80100 and 8085 maybe bigger mass will not heat up that much 
Well, I bought two of their motors not that long ago.
One was DOA, making grinding noise and getting stuck. They offered me 40% off to buy a new one.
After a few more emails exchanged, they promised they will send a new one.
The other one had a protective foil ( the transparent stuff you remove when unboxing it ) stuck in between two metal parts of the motor ( don’t know exact terms for these, the outrunner with magnets and the part with vents ), I’m trying to figure out how to separate these and remove the foil.
They seriously need to improve their QA.
Would you say that the flipsky motors are the motors that have the most lose magnets in your collection?
Nobody should consider buying them at this point. The solder blobs can cause an internal short circuit, which will cause the motor to brake suddenly and has a high change of burning out your VESC/the enamel coating of the windings is compromised. The loose magnets would be a minor concern in comparison.
These motors are dangerous/not suitable for ESK8.
@BarbaraZ. Please, consider discontinuing to sell these motors until your QA issues have been solved. You are putting people’s lives at risk.
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I was considering buying the 6354 190KV Flipsky motors but after reading all the issues with magnets and cans moving. Shall I NOT buy?? What do you think guys?
Read the last 3 posts 
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I’d guess stayaway lol honestly rather buy the sensorless sk3 aerodrive 6364 than these if they are what people say they are (not that I’m buying them)
I have Calibre trucks don’t think dual 6364s will fit from what I’ve been reading. Need to find some 6355/54 !
Watching this thread with interest… the Flipsky 6354s were pencilled in as my motors of choice. Mostly due to the $ savings, but also maybe due to caliber II space constraints?
That sounds bad. I bought one, but wasn´t able to test it yet because I didn´t realise that it has a 10mm shaft. So, Im waiting for a new pulley
I’ve been using Flipsky dual 6355 on standard Caliber II and there is about 1cm space between the motors. For a dual rear motor set up, seems like this is the biggest set up possible
I’m running mine on sensorloss FOC - seems to be working well so far for about 30km
I just got a refound for the motors (60%) Flipsky is aware of the problem. They are working to find another supplier
Good to know…but a 60% refund? For that reason alone I would choose APS or another reputable reseller.
i have returned 3 units 6374 to flipsky due to this issue…bad qc from flipsky but no doubt that is not the case with their after market service
APS is also have same issues magnets coming loose… I don’t know maybe they changed they manufacturer or manufacturer started cheeping out my first motors held for solid 4k miles and new ones didn’t even held few days…