Re: 5KW 72V Controller 36 #4410 FET's, $108 #4110's $154

[The Mighty Volt]

Chatting with the man himself right now.......

Please tell him John in Costa Rica is about to order some more stuff, bigger order than last time. Ask about the shipping via hongkong post. That's what I want. I'm not set up for chat, so trading emails takes forever.

Okay, I will ask about the HongKong post next.

lol this used to be somebody elses thread, I only joined because I wanted a 24 Mosfet controller, now I am doing the negotiating.

[binlagin]

I also submitted an email saying I'm only interested in the controller if it's programmable.

[silverrich1]

forget programming for me, I'll mod the shunt and get that 100.8v 200/250A out of this $130 controller no problem. put me down for a genuine 4110 36 fet please.
now all we need to do is contact nine continents motors for their 4kw 'greyborg' motor (approx $310 shipped), and xin wang for her 20ah a123 cells (28 of them $504) any 48v bms's x 2 (100$) for the sub $1000 10kw super ebike

Does this controller come with reverse?

[The Mighty Volt]

forget programming for me, I'll mod the shunt and get that 100.8v 200/250A out of this $130 controller no problem. put me down for a genuine 4110 36 fet please.
now all we need to do is contact nine continents motors for their 4kw 'greyborg' motor (approx $310 shipped), and xin wang for her 20ah a123 cells (28 of them $504) any 48v bms's x 2 (100$) for the sub $1000 10kw super ebike

Does this controller come with reverse?

Mine did.

[binlagin]

Even though I said I wouldn't buy this if it didn't have programming ability.... I'm tempted too anyways :S

[boostjuice]

I also emailed Leo regarding programmability. He may be about to budge...

I havent replied yet, So what's the list of exactly what we all want?

Sorry for my late reply!

Can you tell me which parameters of the controller you hope to be programmed?

Best regards,

Leo Liu

Hi Leo,

I would very much like to purchase one of your 36FET controllers if you can include the programming ability?
Please let me know if you are able to sell these with this feature.

[NeilP]

And he did tell me

Dear Neil,

Sorry for my late reply!


For now we also can make 24FET 4115's controller, but our controller does not have one port for directly connecting to PC, but if possible, you can modify it by yourself.

So hopefully is implying that it just needs the wires and plug fitted to the board header.

[silverrich1]

well that's sorted then.
who would've thought?
why did no one think of contacting a family that makes controllers before and strike a deal like the moneygrabbers on other forums

And he did tell me

Dear Neil,

Sorry for my late reply!


For now we also can make 24FET 4115's controller, but our controller does not have one port for directly connecting to PC, but if possible, you can modify it by yourself.

So hopefully is implying that it just needs the wires and plug fitted to the board header.

[The Mighty Volt]

MAC Shanghai also sell the Infineon controllers now with Fets of our choice and programmability.

Just one catch- its 50 minimum.

Lets see.

[John in CR]

After going to 24p20s with his bike my son leaned on the controller pretty good this morning. It's the 36fet with 4110's. Battery current is consistently peaking at 134A. He took a 27km ride stopped a few times to check motor and controller temps, and about half included mostly flat with over 100m change in elevation from the house to the turnaround. Then he went straight to his run up the waterfall that I can't do on my bike with the same motor, but still sealed, due to my 80lb heavier load and no ventilation. There are some 25-30% grade segments mixed in that 450m climb, so it's a real test of an ebike, even if he's only 175lbs. The controller stayed nice and cool, and for the first time the 2 turn 16Kv ventilated hub got pushed to pretty warm between the spoke flanges.

We haven't tested regen yet, but we're pleased as punch with the controller and see no problem pushing it higher, especially since the motor can handle it without issue even on steep hills. He averaged 55kph up the climb only backing off for curves. I'll have him give it a try at about 40kph too, which will actually be more stressful for the controller.

John

[The Mighty Volt]

After going to 24p20s with his bike my son leaned on the controller pretty good this morning. It's the 36fet with 4110's. Battery current is consistently peaking at 134A. He took a 27km ride stopped a few times to check motor and controller temps, and about half included mostly flat with over 100m change in elevation from the house to the turnaround. Then he went straight to his run up the waterfall that I can't do on my bike with the same motor, but still sealed, due to my 80lb heavier load and no ventilation. There are some 25-30% grade segments mixed in that 450m climb, so it's a real test of an ebike, even if he's only 175lbs. The controller stayed nice and cool, and for the first time the 2 turn 16Kv ventilated hub got pushed to pretty warm between the spoke flanges.

We haven't tested regen yet, but we're pleased as punch with the controller and see no problem pushing it higher, especially since the motor can handle it without issue even on steep hills. He averaged 55kph up the climb only backing off for curves. I'll have him give it a try at about 40kph too, which will actually be more stressful for the controller.

John

Thats great news. Thanks for the report back. Very encouraging. Give our regards to your kid and tell him to take care.

[NeilP]

After going to 24p20s with his bike
John

Just run that battery pack config past me one more time?...Typo or one hell of a pack?

[The Mighty Volt]

After going to 24p20s with his bike
John

Just run that battery pack config past me one more time?...Typo or one hell of a pack?

Has to be a typo. I feel envy coming on. Yeah its a typo. It better be.

[John in CR]

No, it's not typo. The 12p on it before was sagging too much at the 70A it was getting hit with, so it needed more batts to feed the Leo36. That was the 75lb race bike I built last year with 12p20s Konion V's. This past week he added 4p to each side and 4p along the top. 24p20s is just 36ah74V nominal, and about half the strings are pretty worn, so it's more like 32-33ah, but what's the big deal with that? We don't get air, and only rarely pick up our bikes, so 30ah or more is just 3 times the fun of the whimpy 10ah packs so many run.

This is what it looks like now, and the extra weight just helps keep the front wheel down, which is now an issue. I think it looks a little better than it did with 12p, though not in this pic.

Clown Bike with 24p.jpg (45.83 KiB) Viewed 369 times

Clown bike.JPG (47.92 KiB) Viewed 369 times

[The Mighty Volt]

Oh, 18650 style cells? Oh yeah, well then 24p is no big deal.

I am building 16p right now with the A123 18650's, which I augmented with the "real thing" from OSN Power.

Its for the X5305 in the 20" wheel with the 18 Fet Lyen 65A, so 16p at 5C tested, means 80 Amps, more than enough.

The 24 Mosfet is going onto either the 1500w Moped Motor or the X5303 in a 20". Decisions Decisions. One way or the other that Moped motor is getting fed with 8p 26650 A123 M1 cells.....no point in doing all the ground work for that sucker and not being able to feed it. Its also going to be 24s. No more half measures.

I might swing for the fences and go for the 36 Fet with the 4110's for the Moped motor now that we have such positive reviews.

I spray painted the little frame I will be using for the Moped motor today, I am experimenting with BBQ paint, it seems to take very very well, requires no priming and is bullet proof after 5 coats. Some lacquer should be the next step.

[boostjuice]

Leo fails to budge or his hands are tied regarding programability..

For now we can not offer you the programmable 36FET controller, sorry! We only can offer you the controller with 2 lvc switchable. Max current, block time, Regen braking voltage, 3-speed ratio set as your requests before sending to you.

[The Mighty Volt]

It makes no sense. He IS offering the programmable controller, we know he is, because he is programing the damn thing before he ships it out.

Christ its annoying. And totally unnecessary.

[zombiess]

I thought I saw a programming header on the board. I'm guessing it might be a clone of the Xie-Chang controllers and might even use the exact same software (one of the many versions). Just try the different versions. Shouldn't be to hard to do a pin by pin comparison from the programming header to the chip then compare it to the known Xie-Chang controllers and experiment.

Even if that works it might be a good idea to replace the caps on the boards with known high quality ones.

[auraslip]

He probably thinks that retaining the ability to program them makes buying from his our only option. Which means he is probably just a re-seller.

[The Mighty Volt]

I thought I saw a programming header on the board. I'm guessing it might be a clone of the Xie-Chang controllers and might even use the exact same software (one of the many versions). Just try the different versions. Shouldn't be to hard to do a pin by pin comparison from the programming header to the chip then compare it to the known Xie-Chang controllers and experiment.

Even if that works it might be a good idea to replace the caps on the boards with known high quality ones.

Cheers. I will open up my Lyen 18 fet and start doing some comparison work and seeing what is what. Do you have any idea where I would start looking for software or the hardware to wire into the controller itself? Thanks again.

[The Mighty Volt]

He probably thinks that retaining the ability to program them makes buying from his our only option. Which means he is probably just a re-seller.

Here's the thing- if we get a group buy going we can buy the Xie Chang controllers, custom built, 50 units. So where is his upside in holding out on the programming. We've taken the risk, bought the units, gotten good responses and given good reviews, all the seller/re-seller needs to do is offer the final piece of the jigsaw.

[Kin]

Little note: He might be in partnership with the actual person who does programming, who would not budge because then Leo could skip him. I don't know. He's knowledgeable about what he sells, which is exciting, but I'm just suggesting there may be more than 1 reason why he withholds programming.

[John in CR]

I'm not that worried about programming, because I know I can make it better than programmable. eg Adding a circuit to make my current limits and hi/low regen both switchable on the fly. I want to get some spares in hand before trying these mods, but afterward I'm left with nothing that I want to change via programming. The only remaining open controller changes I want and need are sine wave output and improving throttle response, but those are open items I must leave to the gurus on ES.

[gensem]

I'm not that worried about programming, because I know I can make it better than programmable. eg Adding a circuit to make my current limits and hi/low regen both switchable on the fly. I want to get some spares in hand before trying these mods, but afterward I'm left with nothing that I want to change via programming. The only remaining open controller changes I want and need are sine wave output and improving throttle response, but those are open items I must leave to the gurus on ES.

John is progressive/variable regen possible?

[The Mighty Volt]

Little note: He might be in partnership with the actual person who does programming, who would not budge because then Leo could skip him. I don't know. He's knowledgeable about what he sells, which is exciting, but I'm just suggesting there may be more than 1 reason why he withholds programming.

Thats true also. Who knows. I certainly am not trying to deprive anyone of an income or a living, but there must be a happy medium.

In the meantime.......



That's the best shot I could get of the chip in the Leo controller, I didn't get the schmutz on it, that was already there. Looks like a bit of heatsink compound. As we can see, there is a row of vacant pads immediately in front of it.

Flicking the board over reveals that vacant strip of pads to be all labeled "+5v"



There are also some other pads, especially due north of the chip, which seem to lead into the chip.