zooz
10 W
Hi All,
I appreciate your time reading and responding to this thread.
So, I have had a 350W BPM motor with 450W controller for some time now on my Mongoose Rockadile ALX mountain bike, it's been running okay considering my weight (I am pretty tall and big). It pushes me around London without many issues.
The company I work for is moving office, which will increase my travel costs by travelling on a public transport, so the company agreed to pay the difference for the whole year - which is kinda cool.
So I thought I might as well use that amount of money to build a new e-bike project for work commute as well as for leisure. I've been reading ES for some time now, it's a great place, especially the people who are lurking in there
I have got a budget of about £1000 (approx $1500 USD). I have a Mongoose Rockadile ALX 2010 bike with hydraulic disc brakes, so I will not need to buy a new bike. I can dedicate roughly £1k for the motor, battery, controller and other bits and pieces. I do not want to go mad and waste too much money obviously and I like the DIY idea.
I would like to get about 1kW read wheel drive setup with 48V 10Ah LiFePO4 battery. I was thinking about Crystalyte HS3540 rear hub motor with Crystalyte controller and self-built headway battery. But I have so many questions about that, so I will try to list them below and if you could just let me know what you think - shout if I am talking total nonsense.
1. What would be a reasonable rear DD motor for about 1kW of power? Does Crystalyte HS3540 make sense?
2. What controller should I get? AFAIK Crystalyte do some nice configurable controllers? Will I need to buy the expensive add-on for their controllers so I can re-configure them?
3. Does it make sense to build my own battery out of Headway cells?
I was thinking about 16S Headway 38120S 10Ah 10C to get 48V and a pretty good amps out of it. I think that I can handle the battery without a BMS. The main reason why I want to build my own battery is that I can then design my own battery mount and probably fit a battery inside the triangle of my bike. I hate having 6kg on a back of the bike. It's wobbly and sometimes the bike gets unstable.
4. What charger?
Knowing the fact that I will need to balance every cell separately, I will need a smart charger for lifepo4. Is there a charger which can charge 16S cells at the same time as well as balance them using balancing wires?
5. Speedict or Cycle Analyst? I looked at the Speedict features it seems very cool. Being an IT guy and especially involved in open source a lot, I liked the idea of being able to control my e-bike using my android phone or even a computer.
My current kit was bought from BMSbattery, they seems to be okay, but it takes ages for them to ship an order. However they do not sell Crystalyte motors anyway.
What suppliers would you recommend to buy Crystalyte stuff from? I live in the UK, so I would prefer the ones in the UK (if there are any).
I guess there is too much from me to absorb in one go already, so let's take it from there then. I am sure I will have a lot more questions.
Thanks in advance for your answers and ideas!
-- zooz
I appreciate your time reading and responding to this thread.
So, I have had a 350W BPM motor with 450W controller for some time now on my Mongoose Rockadile ALX mountain bike, it's been running okay considering my weight (I am pretty tall and big). It pushes me around London without many issues.
The company I work for is moving office, which will increase my travel costs by travelling on a public transport, so the company agreed to pay the difference for the whole year - which is kinda cool.
So I thought I might as well use that amount of money to build a new e-bike project for work commute as well as for leisure. I've been reading ES for some time now, it's a great place, especially the people who are lurking in there
I have got a budget of about £1000 (approx $1500 USD). I have a Mongoose Rockadile ALX 2010 bike with hydraulic disc brakes, so I will not need to buy a new bike. I can dedicate roughly £1k for the motor, battery, controller and other bits and pieces. I do not want to go mad and waste too much money obviously and I like the DIY idea.
I would like to get about 1kW read wheel drive setup with 48V 10Ah LiFePO4 battery. I was thinking about Crystalyte HS3540 rear hub motor with Crystalyte controller and self-built headway battery. But I have so many questions about that, so I will try to list them below and if you could just let me know what you think - shout if I am talking total nonsense.
1. What would be a reasonable rear DD motor for about 1kW of power? Does Crystalyte HS3540 make sense?
2. What controller should I get? AFAIK Crystalyte do some nice configurable controllers? Will I need to buy the expensive add-on for their controllers so I can re-configure them?
3. Does it make sense to build my own battery out of Headway cells?
I was thinking about 16S Headway 38120S 10Ah 10C to get 48V and a pretty good amps out of it. I think that I can handle the battery without a BMS. The main reason why I want to build my own battery is that I can then design my own battery mount and probably fit a battery inside the triangle of my bike. I hate having 6kg on a back of the bike. It's wobbly and sometimes the bike gets unstable.
4. What charger?
Knowing the fact that I will need to balance every cell separately, I will need a smart charger for lifepo4. Is there a charger which can charge 16S cells at the same time as well as balance them using balancing wires?
5. Speedict or Cycle Analyst? I looked at the Speedict features it seems very cool. Being an IT guy and especially involved in open source a lot, I liked the idea of being able to control my e-bike using my android phone or even a computer.
My current kit was bought from BMSbattery, they seems to be okay, but it takes ages for them to ship an order. However they do not sell Crystalyte motors anyway.
What suppliers would you recommend to buy Crystalyte stuff from? I live in the UK, so I would prefer the ones in the UK (if there are any).
I guess there is too much from me to absorb in one go already, so let's take it from there then. I am sure I will have a lot more questions.
Thanks in advance for your answers and ideas!
-- zooz