Ok, it is time to update my cruiser status.
So what has happened, this time... well I improve my lipo pack to 33.6V 16amp (cheap lipos 15C), overvolting my Cyclone 500W motor to a safe limit since the controller has 35V caps, this turned out as an improvement in top speed and acceleration. Also, added a CA to see what was going on!
Nevertheless the bike was struggling to reach 42kmxh, taking ages to do so, and acceleration wasn’t something to be scare off.
So I decided to order a replacement 1200w controller ( the first one was blown away by me using it without any reduction) for my Cyclone 1500W motor, Paco at Cyclone was so kind to offer me a special price for the controller because it was a replacement, very nice gesture!
I also ordered two more 6S 4amps pack to built a 48V 12amps battery pack.
Finally all arrived to my place and i began to built my new power plant.
I tried to build my cruiser, as Mike (1000W) built his first bike, using a go-kart 219 chain, 83T chain ring and a 10T sprocket.
1er problem: motor barely fits in the place of the older 500W motor. Had to say Goodbye to me rear fender.
Also the 10T sprocket gave me lots of troubles, finally I ended using the original Cyclone sprocket to help to fix in place that silly 10T go kart thing. Also, I have to built a chain tensioner for this setup, yes I know is it very ghetto, I will improve it over time.
2nd problem: rear 219 chain ring was a pain in the ##s• to adapt to my shimano nexus 7 speed hub! Today it is still barely off center. I used an aluminum plate, drilled holes for allen screw to fix the plate to the rear nexus sprocket, then bolted the 219 chain ring to that plate. The worst problem was that the nexus hub has all its shifting mechanisms between the wheel and the dropout, so there is very limited space to work.
Today I have done two test drives, acceleration is excellent ( compeared to thw 500W) it pulls very steady, with my 44V pack in first gear it tops at 38kmxh, on 4 gear (supposed to be 1:1) it reached 49 kmxh, didn’t try the others gears was a bit scare because this setup does a lot of chain noise vs. the 500w and I feared to loose a leg or something.
Finally I replace the custom homemade Springer fork, for a Hanebrink 40mm suspension fork and added a code 5 avid 206mm disk brake.
So for now, I will continue to improve the drive train,with a better chain tensioner, improve the motor mount perhaps add some rubber to absorb the vibration, and try to perfectly center the rear chain ring.
Also, I will have to fabricate a new battery box; will try to do something with fiberglass. Any ideas??