I have seen some APS motors which had the shaft snap in exactly this place. Not wanna say it will always happen ( probably most of the users anyway do not hit their full potential by quite a big margin 
), but the risk it can happen is definitely bigger than with a full 10mm shaft.
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I’ve never seen a snapped motor shaft ever before, where are these people breaking motor shafts? I’m not being sarcastic
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Imo this is actually the worst way to go. Mega stress concentration, so that basically becomes guaranteed fail point if its gonna break. It is a common design future tho, Flipsky does it as well. But I personally want my shaft to be one continuous size, 8 or 10mm. Frankly wouldn’t be surprised if we make it to 12mm shafts in the next few years.
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It may create a stress concentration, but why does it matter if the 8mm shafts weren’t breaking in the first place
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also the weight is a factor, these guys are heavy weights…
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I have pretty much resorted to just dragging my board by the rear, no way am I carrying it anymore.
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LoL only the part that extends outside the motor needs to be 8mm even if they use a different size inside the motor.
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yeah in all practicality these 63100 motors are sooo overkill, being aple to max out a 6374 is hard enough with our ESC
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So, I’m a big fan of 10mm shafts unless I have to cram them into gear drives that only take 8mm shafts. But also, do our motor shafts really need to be bigger than our axles?
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Exactly what I’m getting at lol please show me these people breaking motor shafts
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cough cough cough single drive cough cough cough
It’s easy to max out a 6374 and even a 6380.
I feel like above 6355 is overkill for dual drive, unless you’re in the woods.
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LoL probably one or two … ever … in the history of esk8 … and those could have been defects.
There is nothing wrong with 8mm shafts. 10mm is heavier for no benefit IMHO.
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There was one here or in the old forum who broke a 8mm shaft on a maytech motor. The pictures I have seen from the APS came out of some fb esk8 groups.
If you look around enough, you will find some
Okay sure, just like you can find an iphone that blew up at some point. No hate on you I’m just trying to make sure there isn’t false doubt going around lol
My point is, we should be happy that the internal shaft is a stronger 10mm shaft and not be worried that the standard 8mm size (literally 90% of the pulleys we currently use) is going to break
Is this good or bad?
Not sure if my Picasso skills help here 
but I tried, so lets say people use a belt setups with idlers, worst case they run tiiiight belts.
Each time you do hard accelerate you see a force like this.
Where would you break if you would be the shaft ? 
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It’s obvious where the failure point would be, but 8mm case-hardened steel is so strong that I think you’ll snap off the motor mount bolts first.
I’m glad the MakerX motors have 8mm shafts!
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The whole movement to 10mm shafts is disheartening and kind of stupid imho.
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Well that happened to me as well
Ok just the lipo puffed and bend my screen, but I was close
For me would be interesting to hear an opinion from somebody who really has knowledge about material strength and stuff. I could imagine it also does have an influence if the shaft was hardened and after the step down was made with a lathe or similar.
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I believe the step down is made before the case hardening.
I prefer to know 