Electric Bikes - It's done! 36 volt 5303

Here's my little CCM (Crystalyte clean machine)i just finished putting together.
After working everything out the top speed is 55.6 kmh,but it cruises best at about 35-40 kmh

http://www.youtube.com/watch?v=sLofyTtTUCY description

http://www.youtube.com/watch?v=-mnZ5RP9I8E ride

here's the specs:
200$ CCM city express (walmart) awesome bike for the money
Crystalyte 5303 on 26" front wheel
35 amp 36 volt controller (low voltage cutout removed)
Cycle analyst computer
3x12volt 18ah sla's
Thumb throttle
Chinese e bike trunk

I'm pretty happy with it overall,but it sure is an amp hog! but still better than my pre-built

That red 8 sided thing you passed was a stop sign

Just trying to keep going before my camera batteries died :S

thats amazing as to the speeds your getting of just 36v! it must be a MASSIVE drain on the batteries though.

The terminals on the sla's look like match heads after every ride :S
I suspect they won't last long

nice

Yeah, the 5303 only has 3 turns of copper in it, the only faster model Crystalyte has ever done is the 5302. That must suck up a huge amount of power, i'm curious, what range do you get at that speed?

I wondered why I found that sooooo scarey, then I realised that unlike NZ you drive on the right in the USA. :p

Yeah, the 5303 only has 3 turns of copper in it, the only faster model Crystalyte has ever done is the 5302. That must suck up a huge amount of power, i'm curious, what range do you get at that speed?
I'll get back to you on that..i just got a proper 36v charger..so i'll let you know what i get on a full charge

do yourself a favor and do what i did. put the money down for lithium....

the change is insane!
100000x times better.if you ran 20ah+ of lithium, you'll find your range goes up a lot and the decrease in weight will help a lot as well (you could also get 48v packs giving you even more speed!).

Range report:

battery drained from 39 volts to 34.5 volts
32.2 km ridden
voltage cutout was 32 volts
limited to 30 amps
Top speed was 56.7 km/h,average was 37 km/h

I could have gone quite a bit further ( maybe 40-45 km) but it was getting kind of sluggish with the battery cutoff at 32 volts.

Next i'll try 30 volt cutoff, 27 amp limit and fine tuning of the cycleanalyst to set a speed limit at 39 km/h.That should extend my range a bit.
I'm having issues with the bike going beyond a set speed limit and then dropping too far below and sucking up amps to get back to the limit..kind of like bouncing hard off a rev limiter over and over.

do yourself a favor and do what i did. put the money down for lithium....

the change is insane!
100000x times better.if you ran 20ah+ of lithium, you'll find your range goes up a lot and the decrease in weight will help a lot as well (you could also get 48v packs giving you even more speed!).
Well lithium is still not at a good cost/benefit ratio i think.150$ taxes in for an 18 ah 36v pack seemed a bit more reasonable,So SLA's will have to do for now..
And speed isn't an issue,i'd like to lose 10 km/h and extend the range.I'll be putting this motor in a 20" front wheel of a Giant Stiletto in the spring hopefully bringing it closer to it's peak efficiency speed.

is that using the CA to limit speed? you can change the settings on it to dull the amount it will cut throttle by, so that it evens out better.

is that using the CA to limit speed? you can change the settings on it to dull the amount it will cut throttle by, so that it evens out better.Yeah with the CA...problem is there's a whack of settings that aren't to easy to figure out..just gonna have to play with it for awhile

Love your electric bicycle. You certainly have a sweet looking ride!

ELMO