Youtube video of the bike running at 36v with a 50% increase in top speed and torque. Will post video with complete directions on how to perform the mod in a few days.

YouTube - E-Zip Trailz Mountain Bike Modified to 36v - 27MPH

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1st bike - Ezip trailz mountain bike with 36v Shockley LifePO4 - Avg. 27MPH
2nd bike - Beach cruiser, 36v Shockley LifePO4, rear Puma hub motor kit - Avg 22MPH --- Coming soon - 48v Shockley LifePO4 to increast top speed to 29MPH!

Test coming soon two 36v Shockley LifePO4 battery packs in series for 72v. Top speed should be around 44MPH