This would fit. A silly set up while I wait for my trampa vertigos and direct drive.
I think the risk sounds like its worth it, would not be on a daily board but it will be quick 
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Do you mind measuring the full width of those 6355s? Want to see uf they will fit @psychotiller TKPs… same with the overall width of the 6364s if anyone has em.
if you have a 6374 sk3 could you get the same measurements? or if anyone can get me the measurements ? im wondering if its possible to dual with 1 of those motors and a sk3 6374…i would measure myself but i wont be able to get to back home for another week
I’d guess around 70mm. I’ve got the old orange motor which seems the same as the new 6364s and that’s about 80mm.
The total lengths on Hobbyking seem correct, except they don’t include the rear nub which is just under 9mm.
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thanks this is just what i needed
Does it make sense to anybody how these motors are designed? Seems they have a cooling fan but no ventilation holes. And a large amount of lost space between the stator and the fan. And the outer shell is 62mm but that’s not where the magnets are. They seem to be 1,5mm more in which results in 58mm diameter or even less.
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Finally, a pair of those new 6374 motor can go on 218mm TB trucks?
Do you run 9 or 12 mm?
No I don’t think so
These are actually 2mm longer than the sk3s…
12mm, no room either way though
Damn, I just ordered two of them to mount them on a caliber II. Got 9 mm belts… Do you know how the 6354 perfoms?
Was thinking about it some more, and my calculation was basses on 15mm belts, if you go down to 12mm you should have a reasonable amount of axle thread sticking out.
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Yes and no. The fan even though fully sealed should help redistribute the heat from the stater to the can which is ribbed. Obviously open would cool better but then it would suck dirt into the motor.
What I do not like is all the extra length at the rear of the motor. Can’t see how that serves any purpose?
Also, the fan doesn’t spin with the can?? I do like the large bearing tho
This is just a theory, but I think it attaches to the blue part of the can with that screw hole at the front. So it can spin. Otherwise its just a waste of space and money.
Edit. If true it means the front of the can is supported by the large fan bearing, which should make the motor more reliable. 
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so, what is the consensus on these? I am about to build my first single motor esk8 and deciding between the sk3 and sk8 6374