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  1. Mark911

    Code 007 isolation

    Be very careful with that one. Isolation refers to the physical separation (in terms of resistance/ohms) between the high voltage electronics/electrical system and the low voltage system. Ideally, you want the two to be completely isolated from each other. In practice the Alta typically...
  2. Mark911

    2004 ECRF

    Typically about 15-20% difference.
  3. Mark911

    Alta Multi Tool member list

    SRod's Cat, that's deep stuff. lol.
  4. Mark911

    2004 ECRF

    Right now I'd say it's 75% physical mod and the rest programming. I say "right now" because the problem is still present under the right (wrong) conditions. The Sevcon is a tougher nut to crack compared to the ASI that's for sure. However, as you mentioned, the higher voltage capability of...
  5. Mark911

    2004 ECRF

    I think I have it 90% solved. It all depends on the rider and the situation. If you're not personally getting the fault I wouldn't worry about it.
  6. Mark911

    Alta Multi Tool member list

    And I remember a time when us early Alta owners were begging the factory to provide this tool! They never did . . . . . . .
  7. Mark911

    More Honda Mugen pictures

    Embarrassing!
  8. Mark911

    Code 36 & 35 in the UK

    The one P group has at least one wire bond failure. The lower capacity of that P group results in voltage differences shown (faster discharge/lower voltage during use and faster charge/higher voltage during charging). It'll cause the system to hit the low voltage cutoff before the other 83 P...
  9. Mark911

    2004 ECRF

    Thanks for the kind comments, both you guys (Bob and Don). The ASI controller's current control algorithms are pretty darn good, so once you get the motor characterized properly it's typically all just fine tuning. This makes the whole process pretty easy and the results are typically quite...
  10. Mark911

    FIM pushes e-dirt bikes

    I’ll showcase a few of my converted bikes if they’ll pay for shipment and travel, lol.
  11. Mark911

    Were Code 36 MXR Warranty Replacement Batteries Still Susceptible to the same Wirebond Failure?

    In my opinion, regardless of whether they changed the process or not, wire bonds to a cells shoulder are inherently more susceptible to breaking under stress than otherwise. Therefore, although reliability may be improved it’s still going to be prone to failure over time. My opinion.
  12. Mark911

    Ever see this?

    Nope, just normal outdoor MX (LACR for those SoCal followers). Of course, "normal" today means clearing some horrendously long gaps and coming up short or going long isn't always the most enjoyable experience for bike or rider, lol.
  13. Mark911

    Ever see this?

    Some of our Alta owners jump long and land hard!
  14. Mark911

    New high performance E-MX from Germany

    Here's my latest design layout . . . . . the linkage rate is much less progressive and almost identical to a modern linked rear suspension. The addition of a second link was the key. The relocation of the rear suspension opens up so many opportunities in terms of component layout and allows...
  15. Mark911

    New high performance E-MX from Germany

    It’s a generic pack in the model. It’s has the ability to fit the entire Alta battery pack within its volume plus room for a generic controller and active cooling system. The simple shape facilitates the incorporation of many different kinds of cells, capacities, voltages, etc. It’s designed...
  16. Mark911

    New high performance E-MX from Germany

    My solution in work right now at MSC Engineering. Actually, this was my original design and the current linkage design has changed.
  17. Mark911

    Another code 36

    That looks much better . . . . . So, the other screen shot was at about 50%? That suggests the charging and balance system is working properly. However, if the reported cell voltages are real, it also suggests problems during discharge. Worse case is that, somehow, those cells got damaged...
  18. Mark911

    Another code 36

    That's a new one to me. If I had to guess, I'd say the DRB card is going bad/data corruption or the LTC chip is bad/data corrupted. Have you tried reloading the BRD and BCU firmware. I'd start there first.
  19. Mark911

    Another code 36

    I'd definitely need a screen print of the battery tab to determine worse case. That said, I can repair your pack if you can get it to me here in SoCal.
  20. Mark911

    DIY conversions can be dangerous!

    My business website isn't up right now if that's what you're referring to. It should have re-directed you to my Instagram page @maxvonauto.
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