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    *SOLD* SEVCON Gen4 Size4 72/80V 350A SIN/COS-UVW-ACI controller PN 634A83203

    If you have a preference as to which one you want let me know. I have the newer firmware version updates if you wish. I have versions 0705.0012, 0705.0013 and 0705.0014 which I can upgrade it before I ship it if you wish. I prefer shipping to the USA, message me directly if you want to know...
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    Sevcon Gen4 "Capactior Precharge Failure" Help!

    I am stumped and hoping someone out there has seen this issue before. I am building my third conversion using a Sevcon. I have a Gen4 Size4 80v 350A model but I bought it used. I didn't have a chance to use it to now. When I turn on the system the capacitor recharges but stops at a low voltage...
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    Kids Polaris Sportsman 90 Quad ATV EV Electric Motor Swap Conversion Using a QS138 70H V3 Gearbox - VOTOL EM-150-2 - DKD

    I completed version 2 of my kids quad EV conversion. I figured y'all would like to see it in action and to know some details on how the build went. https://www.instructables.com/Kids-Polaris-ATV-EV-Conversion/ Top speed well over 50mph, can support an adult rider. Very quick! I am getting...
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    VOTOL EM-150-2SP software has zeros for RPM, Voltage and temp

    Warning! I am newbie to the VOTOL EM software. I have it connected to my 2021 version of EM-150-2 and I see that my RPM and voltage display screen are zero along with no temperatures. However I can change settings without errors. What am I doing wrong? UPDATE: I see that it gets the parameters...
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