Unless the housing is now so thin that it’s in danger of getting broken through, I don’t think there’s a reason to replace it. Mby Kevin will have another opinion tho.
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I emailed him and he just said to reassemble with 648
I got my 648 late as hell, used it last night. it is coming on 24 hours in the next 3-4 and it is still totally liquid for me. so I would say 3+ days before there is even good adhesion (in case need of removal). I will keep looking over the next few days when it is not liquid.
Clear plastic wrap.
possibly an actual band-aid
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Mby if you he lets it keep grinding you could get a little bearing in there lol.
I mean the gears already have a helix, so they’re pretty much just funny, high flute count endmills…
Honestly if Kevin plays his cards right, this could be a major selling point … eskate’s first “self machining” geardrive lol
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right once it machines through you instal a flanged bearing for thrust loads? for the 5.18 16:83 gear is 19mm diameter so this bearing but with a flange (does not exist it seems )
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Guessing your loctite didn’t hold and gear was only held by key. Helical pushed it out and ground away. Impressive that is all the damage. Nice to know that this failure mode may not end in street face if caught in time.
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I would guess a grinding gear drive would burn your finger if touched maybe the motor could overheat and you would notice then.
Did you also forget the right loctite?
My set screws had blue loctite in this incident
Still came loose after riding hard
Thankfully they didn’t come all the way out
Maybe red might work next time? Or just green
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I have mine with green loctite now, but I use to switch between my 2.78/2.20 gears and use set screws.
What set screws?
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The first gen had set screws but I got rid of them cause they’re a safety hazard if they come loose.
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Maaaaaybeeee 
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Big endorsement of M1s. These things are tough as nails. I’ve probably put about 500 miles on them, but yesterday they showed their mettle.
Going around a car I found this pothole, far too late to avoid it.
Tried to ride it out, but my left rear gear casing slammed that sharp front edge. The hit was hard enough to cause the trucks to flex so much that opposite corner wheelbite was achieved - something I’ve never done in normal riding.
I went flying. Hit my noggin pretty good on the pavement, but helmet did its job. Went to get back riding, but left rear of board sounded terrible. Figured either motor magnet came loose or one of the gears had chipped.
Opened it up today to find neither. The hit merely knocked my motor off of its mounting position, setting the backlash too wide. I reset backlash and everything sounds good as new.
These gears are as tough as nails. Don’t think I would have been so lucky if both the case and gears weren’t made of steel. Great work Kevin!
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Dang haha that’s pretty intense. Yay helmets!
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If you wanted, a drop or two of the loctite green on the motor mounting face could prevent this even on impacts, that is if you are not covering it in thermal paste.
