ok... here we go again
So I just read this entire thread twice.
I found it via this thread: http://endless-sphere.com/forums/viewtopic.php?f=2&t=38225
Now before I go too crazy... does anyone have any other threads to cross link so I can be fully informed?
1) Those 4110's dont look genuine to me. I have handled thousands of them and although I can not point to anything specific - when I first saw a picture the print seems off - or crooked. Has anyone confirmed that these are actually genuine IRFB4110 fets manufactured in Mexico? As in confirmed by testing? Makes a difference... I would love it if this guy has genuine 4110's so we dont have to screw around. I can believe that he might actually have his grubbies on the real deal since you can now grab them in quantity 1 at Arrow for only $1.53http://www.arrownac.com/parts/detail/42590206S7624301N3340
(I was having to purchase 12,000pcs at a time to get similar pricing just a year or two ago... so... that is CHEAP!)
2) Programming is not a non-starter. Reality is that most guys want programmability but most guys dont really even use it. Most of the time I just end up cranking everything to the limit and then adding more solder to the shunt. I would be more than willing to explore these controllers. We now have a 3spd switch that can go inline with any controller and can be adjusted for anything from 0% - 100%. The CA can handle most other basic stuff... For me - I will just set it as high as it will go and tune my throttle resolution to keep control of it.
3) What is up with the regulator - anybody sort that yet?
So I posted in that other thread..... then went back and deleted it.
The gist of my post is that I am gong to sample 10 of these. Depending on how easy the supplier is to communicate with I will get them as pimped as possible. Here are the things I would ask for.
*) Genuine IRFB4110 fets from Mexico
*) Heavy 10awg (or better) wires on the PCB traces
*) Try to fit larger 1000uF caps in as many places as possible
*) Add CA-DP connector. Ensure it hooks to the throttle via a diode and not ebrake.
*) Set the current limit to 100A (or as high as he is willing to set) and populate all of the shunt slots available (for increased shunt power handling)
*) Run the absolute largest Power and Phase wires that he is willing to fit in there. 10AWG at a minimum.
*) Extend the Phase and Hall leads to 1.5 meters
*) Request JST-SM (black, same style as CA and Crystalyte use) 3 pin connectors for throttle
*) Set the 3spd switch to 25%, 50%, 100%
*) Power switch? (that also switches the CA)
Ok - that will be a good start.
Please add to my list if you have suggestions
If he is even remotely respondent to that I will start trying for a real set of requirements including call outs for all the connectors and lengths, gasket material, power switches, etc. For starters I would be happy if he would do 10% of that shit and we can finish them off here.
Realistically this will probably just scare him off but I just as soon find out now then have to wait.
If he is willing to play ball I will bring in 50 of these and have my guys here finish them off to be plug and play compatible with Ebikes.ca and Crystalyte gear.
If anyone wants to get in on this action let me know. I will front the dough and shield you from any shit that hits the fan. Not sure how it will turn out - but it is not like this will be the first time I shot a wad of money into the dark vagina called China.