Boardnamics M1 Gear Drive + Other News

:face_vomiting:

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Live axle RKP truck :exploding_head:

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I wanna see dual kv motors next :yum:

LoL it blows my mind how differentials always seem to keep being brought back up. Thatā€™s a fix for internal combustion problems :crazy_face:

Iā€™d rather spend the weight and complexity on another small motorā€¦

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Bro it would be so awesome through.

Giant motors are so much cooler than small ones.

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But *some electric cars have differentials tooā€¦

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switchable termination would be sweet

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Mostly in jest. What I really wish is that we could have hubs that arenā€™t shit.

uh uh, itā€™s a fix for a one source of power, multiple applications of torque problem.

Agreed. I spent too much time one night thinking about how to make this workā€¦

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All you need is a way to change between Delta and wye with some relays or something

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There is someone who did this with a 28kW ā€œebikeā€. I donā€™t have a link handy thoughā€¦ I saw it years ago. If I recall he had a large rotary switch or something

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Right, and between that concept and some implementation is where I spent most of that time.

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I found it; here it is


@Scepterr

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This thing would be nice to have on a board that can be switched from thane to pneumies and vica versa. No need to change gearing, just change your kv with motafuckin big rotary switch, haha

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my thought was an esc that accepts unterminated windings and does it onboard
like a double fet array, one wye and one delta

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The point of a wye-delta starter is to reduce inrush current when hooking up an induction motor to line voltage.

With a Variable Frequency Drive, this is not needed because it regulates the load current. An ESC effectively acts as a low voltage VFD.

At those power levels youā€™d most likely be using a salient-pole PMSM, in which case field boosting and field weakening achieve the same effect if you need more torque per ampere or higher operating speed.

All solid state wye-delta starters use anti-parallel SCRs.

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No what we need is a esk8 with Mecanum wheels.

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Those would be good on a super smooth warehouse floor :crazy_face:

Around here the roads would eat those alive.

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This was settled a long time ago in FRC

Swerve wins go buy a Summerboard.

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@b264
The distance between the two gear drives on a 220mm hanger is 87mm. Is that enough or a 6384? Or is 84 not the actual length?

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TB6380 for example measure 82mm last time I checked. Flipsky 84mm on 87mm clearance might be cutting it close. 74ā€™s are powerful enough for urethane anyways.

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