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  1. S

    Low-cost Snowmobile Electric Conversion

    I'm working on the next iteration: 4x EGO 12Ah 14S batteries, targeting 200A max. QS Motor QS138 90H for almost 3x torque at the track. 3shul CL700 controller (this is overkill, I also have a C350 to sub in but I wanted the extra capacity to try out). Motor mount using 2020 t-slot aluminum...
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    Low-cost Snowmobile Electric Conversion

    I realize it looks ridiculous, but it's geared to run 25 mph at 5000 RPM! There's a serious gear reduction from the countershaft to the track drive. I'm not sure exactly what the reduction is, but I measured that the snowmobile moves 10.2 inches per revolution of the countershaft. I could reduce...
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    A plea for help: Help me find a motor/controller for electric snowmobile conversion: 8+kW, >20Nm, cheap!

    mxlemming, thank you for the response! I really like the idea of open-source VESC firmware plus a QS138 90H - I think that would supply enough torque and power to make this thing workable. Do you have any recommendations for VESC-based controllers that'll do 60V, 120+A battery current, 300+A...
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    A plea for help: Help me find a motor/controller for electric snowmobile conversion: 8+kW, >20Nm, cheap!

    I'm converting a snowmobile to electric power. My first attempt is underpowered. I need a more powerful motor & controller, and I'm a bit overwhelmed at finding a good option. I have a description of what I'm looking for on my build thread in motor+controller: Cost: less than $1500 (to keep...
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    Understanding and Using EGO Power+ Batteries

    I'm converting a snowmobile to electric power: build thread. I'm using EGO Power+ 10Ah and 12Ah packs in parallel. I'm planning to disassemble the 12Ah pack at some point to find out what cells are in it. I've designed a 3D-printable mount for the packs that they latch into. I'll publish the...
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    Low-cost Snowmobile Electric Conversion

    So here's my plea to the community: help me find a better motor/controller setup! I think this would drive better: Cost: less than $1500 (to keep conversion cost palatable) Readily available in US (I don't want to wait months for AliExpress shipping from China) Voltage: 14S lithium (42-58.8V)...
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    Low-cost Snowmobile Electric Conversion

    Sooo, how does it work? Sadly, the results are not great. It seems snowmobiles are far less efficient than I realized. The starting torque is insufficient - even with the VEC-200 at 200A of starting current, I sometimes have to give a push to get the snowmobile moving, and I can't get up a very...
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    Low-cost Snowmobile Electric Conversion

    For my first build I settled on the following components: $1000: 2x EGO Power+ 56V batteries (one 10Ah, one 12Ah) in parallel Custom 3D-printed battery mounts (I'll put up the design for download later) $370: Golden Motor 3 KW BLDC Motor Air Cooled $320: Golden Motor VEC200 Controller 428 chain...
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    Low-cost Snowmobile Electric Conversion

    Hi all, I'm converting a 2003 Ski-Doo 380f snowmobile to electric. First off, the motivation: I have a house in Bear Valley, CA, which is a small ski resort village where the neighborhood roads are groomed but not plowed in the winter. As such, to get around you need to snowmobile, or ski, or...
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