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My charger has a USB header and the "Programable Charging Curve" button outlined in the ElCon website. The standard ElCon has the button more accessible, but all that's required on my 17 charger was to remove the cover. Of course, this option would only work if Alta specified more than one...

I've got Matlab and Simulink already, just need to get some CAN interface hardware from Vector and I can start "sniffing around".

you might want to try plugging it in a few times and let it try and balance. The BMS should keep it from over-charging. You never know, it's a long shot.

Snydes, One of the things I mentioned in my "Technical Review" was the potential problem with constantly charging between moto's without allowing the pack to fully charge. Most of the cell balancing is probably done towards the end of the charge cycle. If the pack never gets to this point...

At first I though the fact that many of the cells were connected "inter-board" instead of daisy chained meant something special was going on. After some head scratching and inspection I've come to the conclusion that going inter-board was needed simply because that's what was required to fit...

Don't want to hijack this thread, but yea, I had the original 167 done by Rick Peterson (RPM) way back in 1999. I also did a 2000 RM 167 with Rick. The Yam was hands down much faster with way more torque. I never heard about the shifting issue until recently and I'm still a bit confused.

No need for just one/two cells. I'd just solder the darn things being carful to minimize the heat. Soldering to the PCB would be similar to soldering ANY component lead to the board. The pad are already gold plated, just tin and go. My guess is that it's probably a bad connection to the...

I offered a ridiculous amount of money to buy one way back and was told they were dealer items only.

Just looking into federal law and from an initial glance (probably wrong), I believe it suggests that if a manufacture offers a warrantee on specific parts they must comply for a set period of time, less than 5 years probably. If they cannot comply they must either provide a new vehicle in...

Just think, parting out your bike could be quite lucrative now and in the future. I've already moved on. My 06 YZ 125/167 project. I've got tons of KTM/WP parts for my Alta so I'm calling it my KaTom-a-Ha. It's funny, my pack is out of the Alta and it STILL seems heavier than the ready to...

I doubt they'd just volunteer that information. However, there must be some bond/insurance or something to cover potential product liability issues. We've all been damaged (financially) and the products in many cases have been rendered inoperable. I hate to say it, but maybe the threat of a...

Maybe someday our bikes will be as infamous (valuable) as a Tucker!

The 17 pack is made of four modules connected in series. Each module is configured 21S 6P. Thanks Matt.

MattB, That Sur-Ron looks pretty trick, a mini motorcycle. I considered a M1 Spitzing R but it was a bit more MC than bicycle. I ended up with a Haibike Downhill Pro. They're all a blast!

There's plenty of stand alone "Fuel Gauges" for Li-Ion battery packs. The simplest are basically calibrated voltmeters. However, because of the relatively flat discharge cure of our packs these are not very accurate between 1/4 and 3/4 charge. The better one combine current sensing (coulomb...

Alta choose a high voltage system for many reasons. The most obvious being the ability of all the high power switching devices/electronics to handle the amperage within reasonable weight, size, efficiency and thermal requirements.

Don't sweat it, if worse comes to worse we'll figure something out. There's always a way. And I agree with DD, batteries tend to go bad slowly and after many cycles (unless they were not properly matched and balanced before module assembly/integration). No, probably a bad wire bond. Those...

Agreed, the higher C rating typically means lower total resistance and therefore less Joules Heating helps delay thermal limiting. They also typically show increased overall thermal conductivity, although all cylindrical Li-Ion batteries are pretty terrible in this respect. They have decent...

I agree, probably a higher C. As far as the older packs being able to handle the higher current associated with the HP difference between MX/MXRs I'd need to do some wire diameter/power calculations. The main current carrying circuit between modules uses solid "rods" about 0.10" in dia...

Sound like an out of range imbalance for at least one of the four cell modules. Particularly if the fix is a new pack. A good BMS (so I assume Alta's as well) should actively balance each of the 21 parallel sets of 6 cells (126 cells) in each of the 4 modules. This occurs during charging...