Watch for the Geneva show next month.speedmd wrote: ↑Feb 07, 2018 9:24 pmNice work! I always thought one of the best from the past to take inspiration from is the stratos.
https://3bv8x43y68hc448rg43goku7yq-wpen ... 90x603.jpg
If the lams are staked together at a location that has little to no flux density change as the motor operates, it will cause little to no added eddy/core loss to have them electrically connected.designerguy wrote: ↑Feb 14, 2018 8:30 pmGOOD NEWS!
Stator losses are only about 50W per motor at 30m/s! (At least per the simulation) I suspect it will be a bit higher since the laminations are joined together via a stamped tab, shorting the stack. There will also be stator, bearing, windage, drivetrain, and controller losses to take into account. I can only hope to keeps them below 1kw together to get the total power at 30m/s under 7kW. (Assuming 1.5kW rolling resistance)
Absolutely. Eventually if budget permits I would like to move to a direct drive motor. The biggest issue was just finding stator laminations (YASA, EVO, and EMRAX would be a significant portion of my budget) as it stands I’m just using a single stage reduction to the wheels. Each motor is good for >140Nm, so even at 4:1 its >1g acceleration.liveforphysics wrote: ↑Feb 15, 2018 12:48 am
If the lams are staked together at a location that has little to no flux density change as the motor operates, it will cause little to no added eddy/core loss to have them electrically connected.
You may find soon enough that putting less mass and bulk in the reduction stage and more mass and bulk into copper and iron in your stator makes an overall higher performance vehicle, especially so with respect to drag times.
I assume you mean in terms of front-back/left-right and not vertically?