xmasta
10 W
Since my "xm-t1" tank build went up in flames, then i'm taking a little break from big complex build and try one geared common build before i'm going to restore the tank.
Let us see if i need to regret a lot from buying from bmsbattery.com or not. Also I will get some more details up about the stuff I bought because they themselves are failing quite a lot with the details about their stuff.
Not so good for business but what can you do. Online support also struggles if you ask something a bit more than basic.
Here's the currently pretty crappy donor bike that also has some scars from the tank burn. So, a "before" picture for now
View attachment 1
So what and why did I pick for the build.
Motor:
First, this time I wanted something relatively light. That frame there, it is nice alu frame that weights only 2kg. (same as front fork alone heh).
So I wanted some good geared motor for the price and weight. After reading around a bit I've decided to try the Q100H - that seems to promise a good performance for it's really small size.
It probably isnt even visible a lot from behind the disk break and gears after installation, i hope
https://bmsbattery.com/ebike-kit/631-q100h-36v350w-rear-driving-ebike-hub-motor-ebike-kit.html
The speedier version, i'm not much of a mountain climber, driving around the city mostly.
(shortcomings on info on the page for me were: diagram doesnt tell me distance for spoke holes, diagram doesnt tell me size of the axel)
Battery:
1. for more speed, 48v pack,
2. for budget, 10Ah of "crappy" cells,
3. for better (hopefully) handsfree driving, the one with Torque sensor (some are saying pedal assist (PAS) is too twitchy),
4. for space saving and more descreet build - the one with built in 20A controller. I will configure it even down a little, to like ~16A probably. Never a good idea to run cheap chinese stuff at rated limits a lot.
https://bmsbattery.com/ebike-battery/702-48v10ah-bottle-09-e-bike-battery-torque-sensor-battery.html
The idea here is, that since i'm pretty DIY guy, i could spotweld a battery together myself but when I checked the prices of buying empty case + bms + charger etc and then decent panasonic cells from good price, It wasnt still making much sense.
So i'll take their combined item that has a lot less premium on the price and it's a working combo that i'll probably run for around two years. By then the fast declining battery market has probably a lot more to offer and I will just switch the cells in the pack myself. And since i'm recovering from the burn, then i just wanted something that works and gets going right away.
Additional stuff.
Spokes..
oh the spokes, so much dicking around to figure out whats the spoke hole distance on the Q100H and then what are the rims available locally and ofcourse they totally do not list the ERD distance needed to calculate the spokes that would work.
And then when i figured all that crap out, bmsbattery.com has no 220mm spokes in stock -.-
After little more running around I found that local guys have one rim with really high profile that I kinda like, and spokes for that seem to be 205mm - that bmsbattery had in stock, yay!
Torgue arms.
BMSbattery sells a pair for 15$, two different versions, M12 and M14. But they ofcourse do not list whats the axel diameter on the Q100H sigh. From some more reading around and measuring things I gather, that it should be M12 so I went with that.
I ofcourse do not like that they are flexible (from that moving joint with a bolt) on an alu frame, so after findint out their position i'm going to weld the moving joint shut on those.
Questions and comments?
Let us see if i need to regret a lot from buying from bmsbattery.com or not. Also I will get some more details up about the stuff I bought because they themselves are failing quite a lot with the details about their stuff.
Not so good for business but what can you do. Online support also struggles if you ask something a bit more than basic.
Here's the currently pretty crappy donor bike that also has some scars from the tank burn. So, a "before" picture for now
View attachment 1
So what and why did I pick for the build.
Motor:
First, this time I wanted something relatively light. That frame there, it is nice alu frame that weights only 2kg. (same as front fork alone heh).
So I wanted some good geared motor for the price and weight. After reading around a bit I've decided to try the Q100H - that seems to promise a good performance for it's really small size.
It probably isnt even visible a lot from behind the disk break and gears after installation, i hope
https://bmsbattery.com/ebike-kit/631-q100h-36v350w-rear-driving-ebike-hub-motor-ebike-kit.html
The speedier version, i'm not much of a mountain climber, driving around the city mostly.
(shortcomings on info on the page for me were: diagram doesnt tell me distance for spoke holes, diagram doesnt tell me size of the axel)
Battery:
1. for more speed, 48v pack,
2. for budget, 10Ah of "crappy" cells,
3. for better (hopefully) handsfree driving, the one with Torque sensor (some are saying pedal assist (PAS) is too twitchy),
4. for space saving and more descreet build - the one with built in 20A controller. I will configure it even down a little, to like ~16A probably. Never a good idea to run cheap chinese stuff at rated limits a lot.
https://bmsbattery.com/ebike-battery/702-48v10ah-bottle-09-e-bike-battery-torque-sensor-battery.html
The idea here is, that since i'm pretty DIY guy, i could spotweld a battery together myself but when I checked the prices of buying empty case + bms + charger etc and then decent panasonic cells from good price, It wasnt still making much sense.
So i'll take their combined item that has a lot less premium on the price and it's a working combo that i'll probably run for around two years. By then the fast declining battery market has probably a lot more to offer and I will just switch the cells in the pack myself. And since i'm recovering from the burn, then i just wanted something that works and gets going right away.
Additional stuff.
Spokes..
oh the spokes, so much dicking around to figure out whats the spoke hole distance on the Q100H and then what are the rims available locally and ofcourse they totally do not list the ERD distance needed to calculate the spokes that would work.
And then when i figured all that crap out, bmsbattery.com has no 220mm spokes in stock -.-
After little more running around I found that local guys have one rim with really high profile that I kinda like, and spokes for that seem to be 205mm - that bmsbattery had in stock, yay!
Torgue arms.
BMSbattery sells a pair for 15$, two different versions, M12 and M14. But they ofcourse do not list whats the axel diameter on the Q100H sigh. From some more reading around and measuring things I gather, that it should be M12 so I went with that.
I ofcourse do not like that they are flexible (from that moving joint with a bolt) on an alu frame, so after findint out their position i'm going to weld the moving joint shut on those.
Questions and comments?