Recent content by Fligh High

Is that mold on your wall behind the rack or the result of horrific chemical experiments with batteries.... And : If from experiments : What exactly caused them If mold : Do you happen to live in Louisiana or so Just curious :)

Fantastic measuring device. Lfp I hope you will keep showing more examples of whatever that can be measured with this thing ! because it is really interesting. Do you think it can show differences in induction in layered board / layered busbar design compared to non-layered or doesn't it work...

I'm actually doing/ help organise an auto-x/slalom myself this weekend. It's more fun oriented than competetive but we have an absolute great abanded ex-military terrain for our use and we can set up a reasonably fast course. The parking-lot slaloms are nice but waaaayy to slow/small for my...

Ahum...cough....I imagine the above horse-shoe saddle is for the male bike pedaling species ? (why on earth did I already have a hunch it would eventually come to this after the first topic post :lol: ) Looks like an absolute must have for Scottish Kilt wearing cyclists ! You can just let it...

It is always really difficult to believe at first sight that there is more copper in your rewind in comparison to the original, the eyes see much more "volume" of copper with the thinner strands !! Still amazing how insulation and diameter of wire make up a total amount of volume of copper :) A...

It gets even better :lol: :lol: just read what Mighty Volt wrote 2 posts above ..... epic , EPIC !!!! (poor Mighty Volt , sorry but this is such a fantastic FROCK UP , can't help myself...... :twisted: )

Mighty volt , since this is for an e-bike and you don't get so much out of breath as would be with pedal power alone this is definately the thing you need if you are into smoking !! Just wire it up to a 12v source and you are good to go :D What can be better as smoking a cigar , a cig or even a...

Sure , I think I understand the silicon/bond-wires limits , but in real life use wouldn't 2 x Irfp4368 be the same current-handling wise as 1 Ixys if they reach "working" temperature in practical use ? How would you program the max phase current-limit in a controller btw , because it can't be...

Still impressive to see such a small motor size-wise powering a complete car ! :) Couple of years ago I would have had difficulties with believing it is even possible. It's not easy to get a capable controller for testing , hope it will work out.

The Ixys looks great hope this will work out. The isolated tab is already worth it ! It even looks very good for producing them factory-wise in many numbers , fantastic future product to be. My knowledge isn't that great concerning mosfets but I tried to compare the Ixys to TO-247 , it's about...

No need to have something super light weight for fun , better build it strong to last and save your money for other fun stuff. Think Hub motors are out , and btw half the speed this guy is going is also fine.... Video is awesome , he's got skills ! One word of caution though : Please , PLEASE...

Yes without phase current control the controller should match the motor , the capacitors will let the mosfets dump any current the motor wants but you will not see that in the battery current shunt as this measures only average . How does this simple controller know what load it is attached to...

Isn't the whole phase current stuff not easy to see on a scope ? Use low resistance shunt or maybe even the phase wire itself and see what the current does with the different PWM rates... It may give an easy answer to all this discussion :)

It must be something like this in practice. I read into your first posts a bit of "conservation of energy" and the idea that if duty-cycle goes down then current must go up proportionally .But this implies a sort of steady state condition. Most of this stuff is still way over my head but I...

Haha , just something else : "very common 1/2 inch ID, 1.125 inch OD bearings" I am amazed it's still inch sizes and not metric ! , even though general manufacturers what I know have gone that way for quite some time even in the good old U as of A (slight pun intended from a european :wink: )...