General Category > eBike Mods/Legalization

2kW SmartPie

<< < (2/3) > >>

atcspaul:
i used my Smart Pie just for an off road bike. I am using a 36v 8ah water bottle battery with it. top speed on flat is only 18mph however I found that more then fast enough for me off road. I like to play in the woods. jumping. bunny hopping, high speed turns ect. when I had the 48v rear rack motor on it wasn't possible. to much weight and rear weight was to much. the set up I did with the water bottle battery is only 47 lbs or 21kgs. its a blast I can do everything I could do with an regular mountain bike and more. take off power not a a lot top end not a lot. more then enough to get me up the hills and a lot of fun which is why I made it.

Lollandster:
As I told you in another thread I love your battery, but I decided to build my own and that is the reason I bought 4000mAh batteries instead of the more normal 5000mAh lipos. From my calculations they will fit inside the bottle from greenbikekit.com ($25 intended for 18650 batteries) with room to spare for the cables. The bottle will arrive Thursday according to FedEx. If this is successful I'll share the build process.

I just realized a moment ago that I had block time (effectively the time spent in burst power) set to 0.1s. I change that to 5s and that made my peak power go up to 2800watts!  ;D (I very sure the shunt value is wrong and that the real number is even higher) Boy that made a difference. I still can't to wheelies, but I can do gravel burnouts and acceleration is awesome. Later I'll try the woods again, I bet it makes a difference there too. I just hope I don't blow the small motor (I'm betting its life on the CAs temperature shutoff)

atcspaul:
look forward to hearing about the bottle battery after you get it built. I really like them. solid mount which I did not expect. it does not move at all no matter how rough I am in the woods.

Lollandster:

--- Quote from: atcspaul on January 14, 2013, 11:04:51 AM ---look forward to hearing about the bottle battery after you get it built. I really like them. solid mount which I did not expect. it does not move at all no matter how rough I am in the woods.

--- End quote ---
I got the battery case today and it was a total bust. The bottle don't fit inside my small triangle. I was betting a lot of money on this. I'm wondering how hard it would be to sell LiPo batteries of this size. The lipos fit nicely inside the bottle though.

It looks like your GM battery is smaller so maybe that would fit. Would you mind sharing some more measurements like the diameter and length from bottom screw to bottom of the bottle, it looks like it barely fits without drilling new holes on yours. If you do this for me then post it in your review so others, not interesting in 3kw, can see it too. Thanks.

EDIT: I turns out selling those LiPos was very easy. They sold 50min after I put them up for sale. No more high power biking for me.

atcspaul:
. aproximitly 120mm from bottom screw to bottom of bottle. 93mm diameter. actually fit exactly where I wanted it. as far down as possible without the end touching on the frame. didn't have to drill any holes.
awesome on selling the lipo's nice and fast. high power intrigues me but I must say both the Smart Pie and Magic Pie do what I want them to and very happy. any mods I do to the bikes themself

Navigation

[0] Message Index

[#] Next page

[*] Previous page