the new 2000watt 84volt brushless motor controller.the best for running car alternators for e bikes

[@vancemacd6315]

Very cool idea, very smart to manage to figure it out.

[@tristanmcnabb2741]

@@vancemacd6315 biggest thanks guys from Cruzermans inventions 😁👍🎉🌟🦇 fingers crossed lol

[@richspillman4191]

Well that was about as clear as mud.

[@tristanmcnabb2741]

Yip well at least I have something on my channel

[@tristanmcnabb2741]

It ant a how to video it's more about whats coming up

[@stubby7934]

If you can get your hands on one cheap (I bought a couple of them for $100 each), get a Hyundai Sonata (2011+) altermotor(starter/generator)...it's a PMSM, 95% efficient....the only drawback is that it doesn't have hall sensors(it has a resolver instead), so, like with a regular alternator or anything else running sensor less, it has little starting torque. 33rpm/V IIRC, so up to about 3000rpm usable. No field to energize. Designed for 270VDC, 8.5kw(or 10, depending on year), liquid cooled (I'd just fill it with coolant and let it dissipate naturally)...it should happily run off of one of these controllers and give you 3000w at 72v+. Any of the "light hybrid" altermotors could work and would have permanent magnets and be a lot more efficient. The early chevy ones were designed for 36V, i believe. You could also get a 10kw IMA motor out of an early Honda Insight, meant for 144VDC, so good for 5kw @ 72v, though you'd have to make support bearings for it, since it uses the engine's crankshaft to support it normally. Lots of options at reasonable prices. Speaking of prices...you can get a silver one that looks otherwise the same (short & fat with 3 screws on top) off flea bay for $50 with free shipping (at least here you can) and Ali for $65 with free shipping...that's the 3000w version, 60 or 80A...there's a longer one with 5 screws that's genuinely built for 80A for around $100; it has lovely, huge copper bus-bars inside, rather than the small ones on these 3 screw ones. Unfortunately I haven't found anything over 3000w for cheap that runs sensorless. If you want to go really cheap, you can get a 1500w/2000w, 48-72v, 40a long, skinny controller for a whopping $30 off flea bay, and if you want it to put out a constant 3000w, you trick it by putting ~48V to the power-on wire while putting 72v+ on the main red power wire, so it stays at 40A the whole time rather than less that it would if it thought it was on 72V. Controller barely gets warm running at 3000w, and you have a smaller controller that's easier to mount/hide than these fat ones.

[@tristanmcnabb2741]

@@stubby7934 thanks so much for that I will look into it for sure 😁👍🎉🌟🦇

[@tristanmcnabb2741]

@@stubby7934 yip I got that 👍🎉🌟🦇😳😂🌟I have I lot of smaller controllers too. I allso have a 3000watt controller brushless and that's the one that gets up to 83 kph on my other bigger bike but it glitches when I take off.84 volt at only 9 amps led batts but I even re done the gearing a little lower but still glitches 🤔so that's why I want to the 2000 watt one .it seems to be working really well

[@Joshie2256]

Are there any affordable controllers that take advantage of the resolver on the Hyundai permanent magnet starter/alternator?

[@andrewthuku2638]

Hi Tristan, whats makes the alternator get very hot when i run it with 48 v controller?

[@tristanmcnabb2741]

Hi buddy I'm thinking that you have already taken out the bridge rectifier to do the conversation.but still if the alternator has no magnet in the middle it needs about 12 volt still to the centre to get the mag field and that's like a heater in the middle it a sence 🤔🎉🌟

[@stubby7934]

Alternators are about 60% efficiency MAX, and that's when generating, so it's probably worse using one as a motor. Try running it no-load at full speed and see how many amps it's wasting...IRRC, mine was wasting 10A just to spin at full speed at 72v, so a good 700w of heat without even doing anything useful. See my post above for an efficient alternative...it ran under 1 amp at full no-load speed.

[@tristanmcnabb2741]

@@stubby7934 ok yip look in it cool

[@tristanmcnabb2741]

@@stubby7934 hi buddy yip I will look into some of the alternators you mentioned 😂👌🤔🌟

[@jlucasound]

Have a Great Weekend Tristan!! 😃👍🚴‍♂🚵‍♂

[@tristanmcnabb2741]

@@jlucasound biggest thanks guys from cruzermans inventions 😁👍🎉🌟🦇 allsome work