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Unread 02-19-2013, 02:45 PM   #1
S D
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Default Speed's at it again, this time it's something different

I went out on a limb and have decided to try something a bit different this time with my projects. A hot rod of a different sort, electric powered with unlimited range. The bike is a Currie Ezip 24 volt e-bike with the choice of either motor assist for more speed, all motor for the lazy biker, or no power for standard biking.



With mods I'm looking forward to 30mph sustained while on the juice. As you can see in the pic above, my first step was to tear the bike apart and look everything over to get an idea of what I am working with.

The motor is currently powered by a lowly 24v 6ah lead acid battery pack - A 36v or even 48v LiFePo4 pack is possible with careful attention to cooling the overvolted motor.

The SLA battery is the main weak point and the first major component to be lost in favor of something with more power! A new sprocket to re-gear for higher top end is also in the works.

As usual you can expect to see lots of pictures, some interesting mods, and a video or two of the new ride. After I have gotten to know the e-bike system more I'll swap the good parts from this build into a redesigned V2.0 model.
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Last edited by S D; 02-19-2013 at 06:12 PM.

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Unread 02-19-2013, 03:43 PM   #2
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One of my good friends has a tiny little Subaru Robin powered bike. This is interesting though. His is drive via a roller directly onto the tire, as opposed to some of them that put poewr through the chain.
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Unread 02-19-2013, 04:58 PM   #3
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We can race in the summer lol mines gas powered though :-P
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Unread 02-19-2013, 04:59 PM   #4
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I've been considering this kit Zoombicycles Shop - Products

Not as environmentally friendly (2 stroke ftw) but 100mpg sounds awesome. 2.5Kw (3hp) at 5k rpm!

Anyway, how much was the bike? Top speed?

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Unread 02-19-2013, 06:35 PM   #5
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The bike was $300 plus shipping. Total cost was $390, shipped via 2 day ups from Amazon.

Top speed bone stock is about 18mph for a fit rider with pedal assist in top gear. From the factory the bike is geared for torque to climb hills rather than speed.

Federal law limits E-bikes to 20mph, so the choice to gain some teeth on the motor's drive sprocket, losing speed and gaining torque, introduced an easy way for the producer to keep the bike road legal in the U.S. And that means it's easy for an Ezip owner to swap in a new cog and effectively increase top speed for $10 and an hour of time.
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Unread 02-19-2013, 06:38 PM   #6
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Yeah my friends is good for about 180 mpg, and 35 mph. Crap on hills though!
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Unread 02-19-2013, 06:50 PM   #7
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Put a 4-cycle strimmer engine on it! Battery issues go away entirely when you can just fire up a fuel powered genset and run with that
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Unread 02-20-2013, 07:57 PM   #8
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No dice on the engine. I don't doubt that the police are already watching me, no reason to start giving them excuses to pull me over.
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Unread 02-20-2013, 10:13 PM   #9
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I'm more interested in this then I should be specially seeing as I live 3/4 of a mile away from work.
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Unread 02-21-2013, 04:50 PM   #10
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Quote:
Originally Posted by lautinjr View Post
I'm more interested in this then I should be specially seeing as I live 3/4 of a mile away from work.
If I lived anywhere nearly as warm as vegas I'd be riding every day possible. My car would only be used for going >50 miles, or hauling people/cargo around.
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