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Electric bike I built from scratch

HardTruth

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#1
I spent 2 months building this from the ground up . I even laced the wheels myself, which is probably the biggest pain in the ass of this whole process. It will easily keep up with the stealth bomber ebikes that cost $11,000 but I was able to build mine for about 1/3rd that price. I got it programmed to run on a 72 volt LI-ion battery but it can be re-programmed to run on 60 volt- 48 volt - 36 volt., etc .
 

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nickndfl

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#2
That's a pair of real forks and the swingarm looks solidly overbuilt.
 

OverOver

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#3
Wow, that's nice with a nice cosmetic look too. I'd have one with duct tape and string
sticking all over it if I built one. What do you mean by 'laced' for the wheels. What did
you actually have to do? I'm ignorant on this stuff.
 

HardTruth

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Wow, that's nice with a nice cosmetic look too. I'd have one with duct tape and string
sticking all over it if I built one. What do you mean by 'laced' for the wheels. What did
you actually have to do? I'm ignorant on this stuff.
Ty . Lacing the rims means taking many measurements so you can get the right spoke lengths and then installing the spokes properly so you have a wheel that spins " true" . Its probably the most difficult part of any bike procedure .
 

HardTruth

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#5
That's a pair of real forks and the swingarm looks solidly overbuilt.
Ty....yes, had to build it with strength because I can chose to pump 10,000 watts or more of power to the rear motor. When you are dealing with that type of
power plant, you really cant use a normal wal- mart bike .
 

Zed

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#6
Ty....yes, had to build it with strength because I can chose to pump 10,000 watts or more of power to the rear motor. When you are dealing with that type of
power plant, you really cant use a normal wal- mart bike .
Really nice job!
 

Zed

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#10
I think that might be to get away with no registration or normal vehicle costs. I suspect you can probably register and use anything that complies with ADR's but to get away with being treated as a bicycle with no road costs you would have to be under that power limit. They are probably just trying to avoid people getting away with free rego for massively powerful e bikes.
 

OverOver

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Ty . Lacing the rims means taking many measurements so you can get the right spoke lengths and then installing the spokes properly so you have a wheel that spins " true" . Its probably the most difficult part of any bike procedure .
Yep, mine would have duct tape and string hanging on it.
 

Zed

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#12
ADR = Australian design regulations. That is the acronym for our vehicle standards.
 

nickndfl

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#14
Why not use round steel tubing for the swingarm? I like the brakes too. What other vehicles is the rear shock compatible with.

I love motorcycle engineering and this looks like fun.
 

HardTruth

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#15
two months the first time you do it. How long do you think it will take the next time?
This is the 4th one Ive built. Much of the hold up is buying the individual components from overseas and then having issues when they send the wrong part or a bad part.

The other 3 I built were more electric bicycles using standard bicycle frames. This is 4th one is actually more of a electric moto bike, with pedals.

This last one was held up because they sent me the wrong spokes..then they sent me a bad battery and finally they sent me a bad motor. They covered it and sent new working parts, but its time consuming.
 

HardTruth

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Why not use round steel tubing for the swingarm? I like the brakes too. What other vehicles is the rear shock compatible with.

I love motorcycle engineering and this looks like fun.
Oh...I did not weld up the actual white frame myself. I'm not that talented to trust my welding abilities. The rear shock is rated for 600- 700 lbs. I weigh around 240 lbs and the bike weigh about 150 lbs { with the battery installed} .
 

arminius

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#17
I like it. Looks well built. What'll it do, speed, charge times, run times?
 

HardTruth

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#18
I like it. Looks well built. What'll it do, speed, charge times, run times?
Of course a lot of factors come into play. Terrain, grade of road, user weight, wind speed etc. On my 1st run, I got up to 55 mph { verified by the GPS I had mounted on the ebike} on flat land quickly, and still had about 1/4 throttle left. I got a bit nervous and backed off .

Charge times depend on the charger , some are slow chargers some are fast chargers. Six hours or less charging time . Costs only pennies to fully charge the battery. On a full charge { around 84 volts } I think I can get about 40 miles distance/ commute and my area has 3 very steep long roads. If you were in
a area that had mostly flat land { like florida} , you can easily get 60 miles or more commuting distance out of the battery and that's without doing any pedaling .
 

mtnman

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#19
That is just too coool! Good job!
 

HardTruth

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That is just too coool! Good job!
well ty.
I couldn't afford to drop 11 grand on buying 1 premade , so had to make my own for less . This one is actually over kill , but I'm hoping this will be the last one I build.

Heres 1 I built several years ago. This one is a fatbike and I mounted the battery right on the middle frame strut. This one did about 34 mph top speed and ran on a 48 volt lifepo4 battery. The front forks are on backwards for a reason { I was testing out a idea } .
The motor is mounted in the rear rim . Its that big round black thing.
 

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Goldhedge

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#21
Cool bike. How much does it weigh?
 

HardTruth

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#23
Cool bike. How much does it weigh?
about 150 lbs. I wasn't to worried about it being heavy, because I knew I was gonna put a powerful motor/ battery in it. When you build these with this type of powerful motor, you don't want aluminum frame or aluminum dropouts . They wont hold up to the power. Some people go with carbon fiber, but its to expensive for me...cheap heavy steel works for my needs.
 

mtnman

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#24
well ty.
I couldn't afford to drop 11 grand on buying 1 premade , so had to make my own for less . This one is actually over kill , but I'm hoping this will be the last one I build.

Heres 1 I built several years ago. This one is a fatbike and I mounted the battery right on the middle frame strut. This one did about 34 mph top speed and ran on a 48 volt lifepo4 battery. The front forks are on backwards for a reason { I was testing out a idea } .
The motor is mounted in the rear rim . Its that big round black thing.
Was the blue bike stable? The trail is all wrong.
 

Alton

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#25
Really nicely done!

Does it come with Sirius, AM/FM, headphone jack, cell charging port, drink holder and a side car?:2 thumbs up: