1-386-453-8835 Brad@RiggleIt.com

Riggle It - Creative Ways I do Things

EV Cyber-Bike

My home built electric bike. 72 volt 80 amp hour 5.6KWH battery, 70mph top speed or estimated 200 mile range at 20 mph

Assembled and spot welded 320 of the new style Tesla Model 3 lithium ion cells. Each cell is 21mm diameter and 70mm long. Total weight of this assembly including the custom Bluetooth BMS is about 45lbs. Rated at 5.9KWH this pack is wired in a 20 series, 16 parallel configuration for 80 amp hours at 72 volts. I fabricated some steel mounting brackets so I can securely bolt the pack into the frame. There is a lot a stress on the frame with this large pack, especially when launching the bike off big jumps.

Building up the standard ebike “enduro” frame I had to make tons of modifications to handle the weight of the battery and be stable at the speed I calculated this would reach.

I can confidently say. I don’t think its physically possible to increase the size of the battery and motor controller assembly at all!. I maxed out all the available space this frame has to offer

The toughest part of bringing this build to reality wasn’t the power and speed. The tough part was actually squeezing it all into something that resembled a bicycle. And not look like at motorcycle. There is less than 1/4″ clearance between inside edges of the pedal crank arms and battery pack.

Here is the first mock-up of all the major components installed. After this was done, I disassembled it and completed all the final welding on the frame rails and started building the electrical control harness.

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