Based on that @Boardnamics and I designed and sold these adapters (44 to 30mm) and used 8mm. We chose this since most motors have 8mm-ish of threads in them and the Reacher is heavier then normal. Extra safety is always better.
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These motors are 1.1kg, which is lighter than stock Lacroix.
I have a feeling the 6389 is also 5mm thread depth. I will find out.
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Motors not only rotating in one direction, so it could also be that the fins in the end act like a vacuum cleaner, depending on rotating direction. That’s just what made me curious.
As depris can’t get out to the front holes it would build up in the motor over time and could scratch the magnets.
Don’t think it will ever be a big problem as I run open motors for years without big issues, but was interested why it’s designed as it is 
Any guess when the 150kV will be in stock?
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Nah no adaptor plates. Please just different front plates.
They are so easy to change and why to add extra weight and extra length to the motor if you can just use an other front plate?
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We did that because of gear drive spacing. The minimum should be 7mm to allow for a 4mm countersink so it can sit flush + 3mm of thickness for the screws. That way, M4 x 8mm will have 5mm of engagement in the motor.
Most motors have 5mm of thread. 4mm of engaged thread isn’t ideal. 5mm or more is good.
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Wrong plate Kevin 
Stop spilling secrets 
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The front plate is a 4 axis machined part with anodising, laser etched logo and wire mesh added. Its much more affordable to just make some adapters instead of remaking part of the motor
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This is not how blower style fans work. They move air in the same direction regardless of what way they are spinning, because they rely on centrifugal force to move the air.
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Mid September I’d say. I will keep updating the description on the product page to make sure its always the most recent estimate
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I’d be curious to see how this is going to play out. These are by far the best looking reacher motors that have come out so far but I’m really interested to see how this effects temperatures, are these going to run hot? Or is that stator thermally coupled in a way that means it’s a none issue.
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I do understand that it’s a more difficult part, but would it be such a big problem for the factory to drill a different hole pattern?
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From the picture the stator doesn’t look different like the ones I have.
I mean the resin potting.
If people do not have thermal issues with the other reacher motors, they shouldn’t have thermal issues with those as well.
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I know I definitely should have added it in… I will see if its not too late to add a 30mm pattern for the next batch I receive
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Sweet sweet sweet 
I did not check on your side, but you ship world wide?
Sure do. I’ve had orders from Japan, Mexico, Latvia… Haha
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I have decided to go with 6.5mm thickness for the 30mm motor adapter. Its projected weight is 23.5 grams. Not bhed
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They seem to run hot but can’t be sure since the sensors are shit. Only heve 205 in service and one sensor isn’t connected from the factory and the other was giving wild readings. Had to snip it.
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I did not have thermal issues with my 173kVs getting up a ski slopes, but that was just one ride so I have way too less time on them to really can say anything about their thermal behavior.
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That’s promising. I’m about to put four 173 into service as soon as my puck receiver arrives. I doubt I would have issues on 4wd anyway.
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if it fits falcons that would be even better!
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