Hand made electric bicycle - cruiser type

Custo · Feb 11, 2015

Hi Everyone!

I am interested in making electric bicycles from scratch. I hope to learn alot from the people on this forum. Nice to meet you all. Here is some pics of an electric bicycle that I made. Here's the first designs that I made.

After making the designs, the next step was printing it out to full scale on a plotter:

The next step was to make a jig to hold the pieces together during welding:

View attachment 10

Then came putting it all together:

It turned out to be a really nice bike. 72 volt 20 AH battery and a 4 kW Crystalite 5th series motor. It weighs about 50 kilos, so it's a bit closer to an electric moped, but accelerates like a motorcycle, hitting the maximum speed of 88 kph (55mph) in just 6 seconds.

dogman dan · Feb 11, 2015

Beautiful. Crying shame there isn't a motorized bicycle race happening anymore. That thing would be a blast on a go kart track.

docnjoj · Feb 11, 2015

Simply beautiful work!
otherDoc

spinningmagnets · Feb 11, 2015

Very well done! Thanks for posting it here...

emmetbrown · Feb 11, 2015

Really nice build!
Love it.

windtrader · Feb 12, 2015

I hope to learn alot from the people on this forum.

WOW! Pretty amazing for a first ebike. I think you can help a lot of us here. I love this rear triangle suspension design. So clean in placing shock. How does it work? Any comment on how it takes bumpy roads?

beast775 · Feb 13, 2015

Simply excellent. 8) nice lines- great battery placement.

r3volved · Feb 13, 2015

OMG that looks great!
I've never been a fan of the cruiser style, but builds like this...I can't help but fantasize

Paderolis · Feb 13, 2015

Very cool!!

2old · Feb 13, 2015

You out-Harleyed a Harley. Great job, impeccable.

Drunkskunk · Feb 13, 2015

Very nice!

Custo · Feb 14, 2015

Hi Guys!

Thanks for the really great comments! It's quite encouraging to hear such words!
So this bike was my first e-bike, but not my first bicycle. I've been making custom bikes/custom frames for a while now. There was a whole process involved with learning the electronics mods and secrets. Once when the battery block fell over on a metal work table, now that was some fireworks to see!
The suspension turned out to be pretty hard, but that's what I was aiming at since the motor wheel hub weighs alot and it would be pretty dangerous to drive it with a soft suspension. Everything works great and despite my worries, I've never hit the shock absorber on anything. I even tried to see if I could by going over high curbs, deep low spots and steps.
It sure does excelerate fast, you have to hold on tight or it will leave without you!

Seven · Feb 14, 2015

Very Nice, any plans to sell these?

1000w · Feb 14, 2015

Very cool work, the battery enclosure is excellent.

dogman dan · Feb 15, 2015

Took some more hard looking to catch on to what you did. Cool design of the rear suspension. 8)

amberwolf · Feb 15, 2015

dogman dan said:
Beautiful. Crying shame there isn't a motorized bicycle race happening anymore.

probably are some in russia, just not here in the southwest usa.

i wish there were some, too, cuz i've finally actually got something that might nto fall apart on a track and can actually accelerate halfway decent.

i'd probably still crash though

Hand made electric bicycle - cruiser type

Custo

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dogman dan

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docnjoj

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spinningmagnets

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emmetbrown

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windtrader

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beast775

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r3volved

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Paderolis

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2old

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Drunkskunk

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Custo

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Seven

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1000w

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dogman dan

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amberwolf

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