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    General Mark911 moving to Ohio

    I'm saying goodbye to SoCal and hello to the Columbus area of Ohio. Bad news for the west coast Alta owners needed specialized diagnostic and repairs, but good new to the folks back east. Although I no longer own an Alta, I kept all my spare parts, packs, test station, repair equipment and...
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    We'll know pretty soon!

    As posted by one of the Varg representatives: Hi guys. I don't mean disrespect for Mark, but if you look back at his posts he's been pretty negative about the Varg. I would consider it borderline spreading FUD. To reiterate, what I've stated on this, and other forums was the following (at the...
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    General Mark911 is leaving this forum

    I'm tired of all the snide innuendo form a certain member on the site so I'm leaving. Anyone who feels they might need my assistance in the future please take my text number down fast before it's too late. Mark at 602 752 0083.
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    Withdrawn Good Used A Pack $3500

    Gone
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    Withdrawn Complete Alta Drivetrain

    Good luck Alta owners
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    Withdrawn gone

    gone
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    Withdrawn gone

    gone
  8. M

    Alta battery pack rebalance capability

    Hello, this question is directed to the few individuals who have actually repaired a code 35/36 module/pack. How successful were you in getting the onboard BMS to re-balance the bad P-group(s) after the repair was made? My experience has been that without "bench balancing" to within a few...
  9. M

    Water Cooled Batt Pack

    MSC Engineering is almost ready to test my water cooled Alta battery pack. Pack is ready to be swapped into my bike but need to finish all the plumbing first. System uses a small electric pump, remote radiator and a modified Alta pack. Currently, the pack has only two of the four modules...
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    Ever see this?

    Some of our Alta owners jump long and land hard!
  11. M

    DIY conversions can be dangerous!

    Electric Motorcycle Builds : The end of the electric rmz Lucky nobody was hurt, but it shows just how vulnerable these Li-Ion based battery packs can be to getting damaged by an external failure or individual cell internal failure. There are so many failure modes which could have contributed to...
  12. M

    MSC Eng developing cell replacement process

    Finally, I'm working on a bike that needs several P-groups totally replaced due to a failure with the balancing system. These groups discharged way below the low voltage cutoff, one totally dead! You just can't wake them up and expect safe, reliable and adequate performance after that...
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    MSC Engineering YZ conversion vs Alta

    A short video of my YZ conversion going head-to-head with our own Bryan Haskell on one of his Altas. The Alta is the benchmark for electric moto so the comparison was enviable. Being down 7-10hp against the Alta (map 4), the outcome was also quite enviable. However, I've still got a few...
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    MSC Engineering YZ conversion ready for track testing

    Wanted to share my progress on the YZ125 conversion project. My goals were simple (in no particular order) - 1) Lighter than the Alta by at least 25lbs 2) No thermal limiting issues 3) Minimal change in CG location to retain handling 4) No frame mods, completely reversible conversion 5)...
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    KTM65 Electric Conversion

    Having owned several Altas and built a couple Alta based conversions (see Honda ElectroGrom and ElectroCRGshifterKart) I decided to build something electric that was NOT based on the Alta platform/running gear. Along with my partner in crime (Instagram Electrtrobraap (@electro_and_co) we...
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    Mark911 can fix anything, if asked nicely

    If you have a known bad A or R pack BCU (aka top cover) I've been able to successfully repair 2 out of 3 I've had cross my test bench. As far as I know, I'm the only person actually repairing as opposed to replacing these units. I've also had success repairing failed ACMs, Inverter boards...
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    Want to buy Looking For Main Harness

    Hey guys, thought I'd post this just in case someone had a main harness they could part with. Any model any year as long as the principle wires/connectors are present (ACM, DCCP, Battery, Display, Switches, etc). Prefer an older MX model due to the battery connector but not a deal breaker...
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    Protected Throttle Idea

    Here's an idea I'm pursuing. Essentially I'm creating a "remote" throttle sensor. This works to both protect the Halls Effect sensor (inside the throttle) and allows for custom "turn rates" depending on the ratio between the two standard cable throttles needed for the conversion. As shown...
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    New Dash location, possibly safer?

    Here's something I whipped out the other day. I wanted to get the display totally off the bars completely. One for protection and second because it's such a PITA to make simple bar adjustments. I only need to see the Map selection (only once), SOC meter and any warning lights, and the last two...
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    Bladder conversion done differently

    It's been discussed that there's just not enough room between the shock and the rear subsection to incorporate a proper bladder system. There's just so much length and although going "fatter" might work with a piston type reservoir a true bladder needs to collapse radially, not axially, so you...
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