Speed's at it again, this time it's something different - CarForum.net - Car Forums, Automotive News and Community

**S D** · 02-19-2013, 01:45 PM

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.

**Mike** · 02-19-2013, 02:43 PM

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.

psp4ever · 02-19-2013, 03:58 PM

We can race in the summer lol mines gas powered though :-P

MetalBeerSolid · 02-19-2013, 03:59 PM

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?

**S D** · 02-19-2013, 05:35 PM

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.

**Mike** · 02-19-2013, 05:38 PM

Yeah my friends is good for about 180 mpg, and 35 mph. Crap on hills though!

**Kenny McCormick** · 02-19-2013, 05:50 PM

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

**S D** · 02-20-2013, 06:57 PM

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.

**lautinjr** · 02-20-2013, 09:13 PM

I'm more interested in this then I should be specially seeing as I live 3/4 of a mile away from work.

**S D** · 02-21-2013, 03:50 PM

Quote:

Originally Posted by lautinjr

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.

02-19-2013, 01:45 PM	#1
S D Forum Editor Join Date: Mar 2007 Location: In the garage. Posts: 1,660 Rep: 51	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. __________________ Simplify, then add lightness. Last edited by S D; 02-19-2013 at 05:12 PM.

02-19-2013, 02:43 PM	#2
Mike Community Director Join Date: Jun 2008 Location: Between a rock and a hard place. Posts: 6,128 Rep: 129	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. __________________ Take me down to the paradise city where the grass is green, and the girls are pretty. \| Save a tree, support your local drag strip! Read the rules! \| DO NOT REPLY TO SPAM \| See a bad post? Just report it! Daily Driver: 1996 Chevy Blazer LT 4x4 - 235k miles Girlfriend's Car: 2003 Oldsmobile Alero GLS 3.4L 4 door - 130k miles Bike: 1981 Yamaha XS 400 [Almost ready!] Plow Truck: 2000 Chevy Silverado 2500 LT - 190k miles [6.0L, 4x4, ECSB, Eaton Rear Locker] Others: 2012 Chevy Cruze automatic, Sonic sedan manual, both 1.4 Turbo, LT trim

02-19-2013, 03:58 PM	#3
psp4ever idk Join Date: Nov 2008 Location: Wisconsin Posts: 504 Rep: 40	We can race in the summer lol mines gas powered though :-P __________________ 1994 GMC Sierra, 191k miles, 5.7L, Train horn edition. Back on the road 2001 Honda CRV, 110k miles, 2.0L. 2012 Honda Rancher ES, 2300 miles, 420cc. Need a Carfax? Click HERE. Watch my Vids on YOUTUBE

02-19-2013, 05:35 PM	#5
S D Forum Editor Join Date: Mar 2007 Location: In the garage. Posts: 1,660 Rep: 51	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. __________________ Simplify, then add lightness.

02-19-2013, 05:38 PM	#6
Mike Community Director Join Date: Jun 2008 Location: Between a rock and a hard place. Posts: 6,128 Rep: 129	Yeah my friends is good for about 180 mpg, and 35 mph. Crap on hills though! __________________ Take me down to the paradise city where the grass is green, and the girls are pretty. \| Save a tree, support your local drag strip! Read the rules! \| DO NOT REPLY TO SPAM \| See a bad post? Just report it! Daily Driver: 1996 Chevy Blazer LT 4x4 - 235k miles Girlfriend's Car: 2003 Oldsmobile Alero GLS 3.4L 4 door - 130k miles Bike: 1981 Yamaha XS 400 [Almost ready!] Plow Truck: 2000 Chevy Silverado 2500 LT - 190k miles [6.0L, 4x4, ECSB, Eaton Rear Locker] Others: 2012 Chevy Cruze automatic, Sonic sedan manual, both 1.4 Turbo, LT trim

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Speed's at it again, this time it's something different

02-19-2013, 03:59 PM	#4
MetalBeerSolid Senior Member Join Date: Aug 2011 Location: Vancouver Posts: 301 Rep: 20	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?

02-19-2013, 05:50 PM	#7
Kenny McCormick Spah sappin' mah susp! Join Date: Jan 2009 Location: Earth...I think Posts: 3,161 Rep: 96	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 __________________ Tired Iron ain't got no time to wear out... My rigs: 1985 Ford F150 \| 4x2 \| 300ci OHV inline six \| 4-speed OD manual \| 310K \| No power brakes \| Running 85% - Steering linkages torqued down. Needs to hit an alignment rack now, but is driveable 1984 Ford F150 \| 4x2 \| 300ci six \| granny four \| 3.55 rear end \| 210K \| Has had antique tags for six months :P, is running fine 1997 Ford Explorer XLT \| 4.0L Vulcan V6 \| 5-speed automatic \| shift-on-the-fly 4WD \| 210,000 miles \| Running 100% 1989 Ford F150 \| 300cid six...again \| 5-speed \| 4x4 \| 160K \| Literally just drove it home yesterday. Might need a clutch soon.

02-20-2013, 06:57 PM	#8
S D Forum Editor Join Date: Mar 2007 Location: In the garage. Posts: 1,660 Rep: 51	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. __________________ Simplify, then add lightness.

02-20-2013, 09:13 PM	#9
lautinjr Now accepting bribes. Join Date: Oct 2007 Location: Currently Las Vegas Posts: 4,019 Rep: 191	I'm more interested in this then I should be specially seeing as I live 3/4 of a mile away from work. __________________ Please help reduce our mini van population and wear condoms!