You’ve pretty much already gone through the extra steps to use a VESC so you might aswell, the VESC and ebike controllers already take direct analog through to ADC signal for input already though, so the arduino is probably unnessesary
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Ok, I think I will keep and Arduino because it also does throttle limiting with a button, but I see what you mean.
So, would u recommend the MAKERX MINI-FOC PLUS or the MAKERX GO-FOC HI100?
Or is there another similarly priced better alternative?
Thanks very much.
Ask Frank
Goddamnit frank
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Well you’re going to be able to mount it to a massive heatsink, given you have the space I find buying a VESC designed to be small unessesary, you’ll need to adapt some wires but this
is most likely to best option.
Has anyone here even tested that one? Who knows how reliable it is, given flipsky’s ESC reputation
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ebike ESCs with their massive enclosed heatsinks are really difficult to kill. as long as its not DOA it’ll probably be fine, especially if he runs at like 18S instead of the full 20.
Flipsky’s reputation is a little unfair, the failure rates on 90% of their products is the same as everyone else. I’ve seen people who have had no luck at all with their ESCs, but it doesn’t really track because the chance that 99% of the ESCs sent out are okay and somehow 1 person hits 5 bad ones in a row is miniscule.
Also on a bike an ESC blowing is a lot less dangerous than on a esk8, if it does happen to be a bad design he can probably get a refund.
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I’m 80% sure I’m gonna order a pair at the end of the week. I’m going to do some testing but I don’t have access to an easy way to test high voltage and I’d rather not blow it up. Will happily disassemble it and document stuff though
I know it sounds silly to get a high voltage ESC without a HV battery but I want a redundant dual high power setup and to not have to deal with the unity any more, and this is significantly cheaper than the alternatives
if youre going towards the esc’s rated voltage limit running regen will be bumping it higher with voltage spikes.
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Yeah I think my 10/12S setup is sitting comfortably far away from the 20S limit 
how does flipsky have the voltage limit for the 75100 at 84v? wouldnt it be using the standard 75v hardware?
So the limit with older VESC implementations has been the DRV 8301 chip, it’s used as an all in one gate driver IC with some control circuitry for brushless motors. Works really well and is easy to implement but it inherits the 60V absolute limit from the DRV
The VESC 75 designs can’t use that for obvious reasons, so rather than buying an off the shelf controller-on-a-chip they implement discrete gate drivers for the mosfets. When you’re doing that already, you can just buy higher voltage rating parts.
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so flipsky is using parts in the 75100 that are good to 84v? hummm. more power…if it survives.
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Yeah I’m not 100% sure to be honest, that’s why I’m curious to open it up. Given their record they could just be inflating claims for marketing purposes
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I mean, they literally put ‘bike’ at the top of the list.
…and then go on to say that that it might well be the best ESC for performance E-Biking!
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they also claims trampa esc is used in aerospace industry or something 
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Would any of the hardware have a problem in space? How about a bike in space?
Short answer: yes big problems unless you were on a planet of comparable size to earth. Wheels push into the surface and the surface pushes back, and because there is a net force in the system either the surface moves or the wheel does. Push your hand into a wall and you’ll feel it push back.
The force applied has a downward component and a horizontal component. So the reaction force (the surface pushing back) has an upward force opposing the downward one, and a horizontal force in the other direction. On earth the vertical component is usually negligible because it’s never enough to overcome the weight (Sometimes it is and that causes a bike to wheelie when gunning it but for something like a car it’s never gonna push you upwards). If gravity is lower though, then something with a mass of 100kg doesn’t apply nearly the same force downwards. Mass is the amount of something, a universal quantity, and weight is the force exerted by a mass due to gravity. Weight goes down in space, mass doesn’t.
If you’re trying to spin a bicycle on the surface of the moon you’re gonna have a bad time. You can make the force tiny (move slowly) so the vertical component never overcomes its weight, or you can find some way of grabbing the surface with hooks or something that pushes horizontally instead of using a rolling element
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I mean how would the hardware be effected if at all in a non- gravity or low gravity environment and I can imagine how it would effect the vehicle
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One of these days I’ll learn to read context clues properly instead of writing nonsense, sorry about that.
The electronics have the potential to be ok but they’d likely need a lot of protection from radiation and temperature. There’s also material properties that don’t need to be considered on earth like plastics changing forms in a vacuum and some metals generating crystal structures, that suddenly get spicy in space. Spacey. Then the obvious problem of surviving a rocket launch in the first place, it’s some of the highest force and vibrations any machine ever has to go through.
I think this mentions the vacuum, material changes, and launch survival. Doesn’t go into much detail about gravity but it’s already an uphill battle
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