Instant Start 18 fet Infineon Boards are here...

[nicobie]

I just tuned in my Magura Throttle -methods

Hey -methods,

I tried something like that on my hall throttle controlled Infineon (12 fet) w/ BMC 600w hub and didn't have any luck.

I bought a couple of 1k mini pots and wired them in series on the 5v and grd wires. When the pots were set to anything over 125 ohms the motor wouldn't run. I tried them at 75 and 100 ohms each and didn't see a difference from stock. I used the same settings on both pots for each test.

Do you think a Magura throttle tuned with resistance like you did would help? It's not too bad at 52v, but when I switch to 75v the bike is almost unrideable.

Nick

 

[John in CR]

Methods,

Blowing stuff up may be great fun for those into souping up and repairing electronics, but while many of us sleepwalkers like performance as much as the next guy, we also want absolute dependability of electronic items with no moving parts to wear.

Then you better get your wallet out :wink:

Performance + Reliability = Expensive

I know it is worn thin, but here are your three options -> pick any two:

Powerful
Reliable
Cheap

-methods

Methods,

I disagree, it only requires good shopping. I got 5 brand new rigs for less than $250/ea, including 1200W small motorcycle hub motor with big drum brake and nice thick axle and wires, 15fet Infineon controller, motorcycle rim and spokes, DC/DC converter, torque arms, and ceramic bolt together connectors. That cost included sea shipping and substantial import duties and taxes. The build quality is higher than I've seen on any other hub motors. I've had absolute dependability at 63V nominal for a couple thousand miles (motors never get past slightly warm to the touch unless I totally bog them down up too steep a hill), and they push my 240lbs up past 50mph and up 8% grades without pedaling. The only compromise I see is the 30lb wheel assembly weight, and I had to do a bit of simple metal work to add a place for a freewheel.

That's arguably powerful, reliable and cheap in one package.

For a couple of weeks I've been running one at 74V nominal without issue, which also gave me the extra passing acceleration that I was looking for in the 30-40mph range. Once I add $30 of 4110's to go to 85v nominal, add a 4th leg to the 3 leg shunts, and get rid of the soft start, then I should have a 60mph bike since I've hit 58 already. I need to stop just riding in my free time, and stop being a pussy about delving into electronics mods.

BTW, did Matt hook up with you on my 80 fets?

John

 

[stator]

Ok.... :?

Q1 is not populated.
I an pretty sure it is used to drive (SM) (Amplified hall signal).

...
-methods

The amplified hall signal is at pin HE. A general purpose NPN transistor needs to be installed at location QSA. The SA hall signal feeds the base of this transistor through a 100K resistor. The emitter goes to ground and the collector is pulled up to 5V-1 through a 10K resistor. There is a 5K resistor between the collector and the HE pin.

--Bill

 

[methods]

At the mo I'm waiting on parts but will proceed

We need to get back into contact. Our conversations got buried under dozens and dozens of PM's
Can you re-seed our PM thread?

I am very excited to see how this turns out. The 6-fet board is really the hot ticket - tiny, cheap to build, powerful....
This 18 fet is sort of like the big block Chevy - yours will be like a 2.0L turbo

-methods

 

[methods]

I just tuned in my Magura Throttle -methods

I tried them at 75 and 100 ohms each and didn't see a difference from stock. I used the same settings on both pots for each test.

Do you think a Magura throttle tuned with resistance like you did would help? It's not too bad at 52v, but when I switch to 75v the bike is almost unrideable.

Nick

You can do the exact same thing with your hall throttle that I did with my pot throttle - in fact, the output of the hall sensor is non-linear so it should be *better* giving you more resolution at the lower end and less at the high - which is exactly what you want.

One thing that is very important to understand is that the pots are not independent - they are tied together. Both pots will affect the measurement - they must be tuned harmoniously.

They key is to adjust both pots until you reach a point where the resting voltage is just below the "start up" voltage and the final voltage is between the "full speed" voltage and the "max voltage".

This cant be done blindly by twisting the pots - that would be akin to trying to tie a fishing lure in the dark with gloves on. Sure you can do it, but if you have not done it 1000 times before then it will take you forever (or perhaps you wont get it at all).

Bust out that ol' meter and set up a spreadsheet.

Record that throttle voltage, make a small change, record the voltages, make a small change, record, change, record, change
Toggling back and forth between the resistors.

Please also note - if you go too high with the resistances you will eventually choke out the hall sensor supply. There is a limit and I dont know where it is. The sensor will require a minimum operating current. This can be calculated.

-methods

 

[methods]

Methods,

I disagree, it only requires good shopping.
.........
That's arguably powerful, reliable and cheap in one package.
.........
BTW, did Matt hook up with you on my 80 fets?

John

Lol... You are not the first person to believe that they could have their cake and eat it too.
I applaud you if it turns out to be the case. There is an exception to every rule.

Matt did contact me and he said something about a sale that was coming in and money in his paypal or something like that. Probe him again. I ship same day when I get funds.

-methods

 

[methods]

I am going to start a thread about this later, but just so that you guys know I am an ebike bad-ass here is proof.
After the reception I rode her all the way back to the hotel at 11:30pm at night too do the deed as well.

Who says that ebike clowns cant get more ass than a toilet seat?

* Yes those are tall cans of Old-E dragging behind the bike
* Yes those are monster trucks painted on the sides
* Yes that is a Ghetto Fabulous cart made out of pine, copper straps, zip ties, and a lawn chair
* Yes we mash around on that thing jumping off of curbs at 30mph... She always tries to dump me out the back

-methods

 

[methods]

I dont know why the first picture is not showing up - You have to click it.

-methods

 

[BenMoore]

:lol: ...and the honeymoon?

 

[steveo]

I am going to start a thread about this later, but just so that you guys know I am an ebike bad-ass here is proof.
After the reception I rode her all the way back to the hotel at 11:30pm at night too do the deed as well.

Who says that ebike clowns cant get more ass than a toilet seat?

* Yes those are tall cans of Old-E dragging behind the bike
* Yes those are monster trucks painted on the sides
* Yes that is a Ghetto Fabulous cart made out of pine, copper straps, zip ties, and a lawn chair
* Yes we mash around on that thing jumping off of curbs at 30mph... She always tries to dump me out the back

-methods

Thats freaking awsome dude!!! I was thinking of doing the exact same thing when my time comes ...

till then .. she gets her own bike & i have mine!

-steveo

 

[no mods]

buhahaa! nice pics-

 

[PhoenixOSU]

I think methods will be preoccupied for a few days

but anyway, congrats and you lucky b______

 

[liveforphysics]

You are the most dedicated E-biker in history now.

Big respect bro!

You look like a beautiful couple!

You're gona have to share a piece of that wife with me when I'm in the area

 

[GGoodrum]

Awesome pics! Nice ride. The bike is pretty hot as well...

 

[voicecoils]

Awesome stuff. You've given me the only solid reason for getting married that I've seen so far 8)

Switters and even Maestra, would be proud of that spectacle I suspect :wink:

 

[Sacman]

Patrick,

Nice pics bro! Big kudos to you for making the ebike part of your wedding. That goes down as f*cking Classic!!!
It's great that Tania has a great sense of humor and she looks like she's really enjoying it all too.

 

[Sacman]

You're gona have to share a piece of that wife with me when I'm in the area

???

 

[Doctorbass]

What is the best and safer way to set the LVC limit of that 18 fets controller to 40V ( for 48V lifepo4) ?

resistor mod?

Software mod? (but since it'S for a crystalyte 72V 48A controller using the same board.. i'm still not certain if it is programmable)

Doc

 

[methods]

Come on doc... Get in that Delorean and set the date for 2009. Resistor based LVC hacks are totally 1984

The best (and only non-retarded way) to set the LVC is by flashing the firmware.
Just hook up the programmer I sent you, use the software Keywin provided, and flash the board with new settings.
It will either work or not. I dont think you need to worry about bricking the board.
Both Keywin and Kenny are buying from the same manufacturer. Same exact boards I am sure. Kenny just does not want people flashing because it would make warranties too hard to deal with and that is why he does not provide a cable.

Set the current limit to MAX on both the battery and phase.

-methods

 

[methods]

P.S. The reason you do not have to worry about bricking the board is because you are not actually flashing the firmware of the chip... Really all you are doing is calling a function in the software that loads in values over the UART. If the chip is not set up for programming then it will simply ignore your attempts. So - Try it!

If on the other hand we were actually loading new firmware - in that case I would tread lightly as I have bricked many things
Not the case here though.

-methods

 

[methods]

Switters and even Maestra, would be proud of that spectacle I suspect :wink:

Missing Links:

There are 5 things that separate full fledged humans from the less evolved: Humor, Imagination, Eroticism, Spirituality, Rebelliousness, and Aesthetics
Per Switters perhaps we need to add Curiosity.



-methods

 

[recumpence]

How about, "Created in the image of God....."?

Oops, I used the "G" word! Here come the wrist slaps. :wink:

Matt

 

[methods]

You need to read "Fierce Invalids Home from Hot Climates"
- A Novel by Tom Robbins

That is my Bible :wink:
(along with Fight Club)

 

[recumpence]

The Bible is the all time best selling book. It is translated into over 420 translations and sells more copies than any other book every year. For thousands of years men have attempted to disprove it, yet none have. Archeology confirms it, changed lives confirm it, even the resonation in people's hearts confirm it. And no, science does not disprove it. Many secular scientists have a bias against it and, therefore, misinterpret data. But, no raw scientific data disproves scripture. There are many physicists that have written many books regarding the validity of scripture and its claims as well.

I don't want to hijack your thread, though. We could go back and forth for days (years?).

I am just razzin ya, though. If you really want to get into it, we can email back and forth. That last post just begged for a reply. :wink:

I have alot of respect for you, Methods. I am not trying to offend you. I just had to speak up. That post was screamin for a snappy reply. :wink:

Matt

 

[ZapPat]

[...]
I don't want to hijack your thread, though. We could go back and forth for days (years?).
I am just razzin ya, though. If you really want to get into it, we can email back and forth. That last post just begged for a reply. :wink:

I'm sure he'll be messaging you any time now, just begging for more great religious facts like those...