KARCH67
1 mW
Starting my 2nd E bike build, 1st since discovering this forum 2 months ago. My first build was an electric trike for my Masters thesis about 8 years ago (https://zeept.wordpress.com/), it is amazing how much has changed in the field since then! My trike has sat dormant in the basement since then and rather than update it I feel a bike is more in line with my needs now. I live in a very hilly area with up to 10% grades and would like to commute occasionally to work which is 16.5 miles each way, the roads are pretty narrow in places and I no longer feel comfortable riding the trike on the road. I can charge at work, but I am a pretty big guy at 6'2" 290#, so I am going to need lots of torque and battery to handle the hills. I am not real concerned with top speed but I would like to maintain a reasonable speed up hills (15-20 MPH) and be able to regenerate down hills as I have several downhill sections that will burn up my brakes if I don't have a means of controlling my speed.
Here is what I have done so far:
Bought beat up 07 Kona Stinky downhill bike off Craigslist for a few hundred dollars, I have since disassembled it, stripped the paint and started overhauling the Marzocchi fork:
My goal is to place the battery in triangle and use the space below the down tube if I need more room. I have ordered 80 LG 18650 cells from tumich and will likely assemble them into either a 48V 17ah 6P13S or 59V 14ah 5P16S battery. I am building a frame case from aluminum and I am modeling it after Kepler's great build (http://endless-sphere.com/forums/viewtopic.php?f=14&t=65719). I have 2 16S D132 BMS's on order from dnmum and will order some switching power supplies off eBay for chargers.
I haven't decided on a motor yet, but I am looking towards hub motors and am currently favoring the Magic Pie 3 - I would appreciate any advice for a high torque motor that can handle my weight and hills.
Here is what I have done so far:
Bought beat up 07 Kona Stinky downhill bike off Craigslist for a few hundred dollars, I have since disassembled it, stripped the paint and started overhauling the Marzocchi fork:
My goal is to place the battery in triangle and use the space below the down tube if I need more room. I have ordered 80 LG 18650 cells from tumich and will likely assemble them into either a 48V 17ah 6P13S or 59V 14ah 5P16S battery. I am building a frame case from aluminum and I am modeling it after Kepler's great build (http://endless-sphere.com/forums/viewtopic.php?f=14&t=65719). I have 2 16S D132 BMS's on order from dnmum and will order some switching power supplies off eBay for chargers.
I haven't decided on a motor yet, but I am looking towards hub motors and am currently favoring the Magic Pie 3 - I would appreciate any advice for a high torque motor that can handle my weight and hills.