Hi all,
I am finally putting together parts for my build. First, a little history. My last motorized bicycle was a 66cc Happy Time with a 36T rear that would run 32 MPH pretty well and 39.7 top speed. After 400 miles, I blew it up (wrist pin bearing went, I knew I should have replaced it)... but even getting to those 400 miles was a constant battle with reliability. And you guys with electrics always seemed so happy :lol:
I live in a small town just south of Austin, TX, and I really enjoyed having a motorized bicycle to run errands. A 10 mile loop lets me hit the post office, the drug store, Target, Lowe's, fast food, etc. And the speed limit on those roads is 35 MPH. Yes, I know I can ride slower on the shoulder, but I really do like keeping up with traffic instead of being a roadblock. I figure if the police did not give me a second look on a 35 MPH 2-smoke, a 35 MPH electric would be ok too, right? I can even dummy pedal (or uphill, actually pedal).
So the goal was to be able to cruise at 35 MPH with a 10 mile range with pedaling from a stand still. The longest distance without a stoplight or sign is about 2 miles. The terrain is a lot of short very slight grades. Nothing too steep, but where I live there are not a lot of long stretches of flat road.
I have a 1993 KHS chromoly steel mountain bike that I am planning to use. Nice large center triangle for batteries and controller, front Rock Shox, feels sturdy and rides smoothly. It was my former hike and bike trail pedal bike until I found a great deal on an older Cannondale...
My original plan was to go with a 48V 1000W yescomusa rear wheel kit and run 15AH worth of 14s lipo, figuring that would get me to 30 MPH and I would just upgrade the controller and add more batteries as I budgeted more for the project.
But then I decided I would just be happier taking a bit longer to piece my kit together and try to reach my goals with my first setup. So this is my current plan:
From cell_man's EM3ev site:
- MXUS DD motor (not sure of the wind? I weigh 200lbs... Maybe the 305 rpm?)
- 12 FET controller with the IRFB4110 fets, running 20s. 22s? 24s?
- Laced into the 26" Alex DM24 rim
That kit, shipped via SAL would be around $375, putting me $100 over the yescomusa kit, but I would hopefully not have to upgrade the controller to reach my 35 MPH goal?
I saw another similar post with similar goals and he was talking about going with the MAC geared motor instead, is a geared motor better than a DD for this type of use?
I am hoping to get in on the next run of Doc's torque arms in January, too.
Am I way off base with that setup?
I am finally putting together parts for my build. First, a little history. My last motorized bicycle was a 66cc Happy Time with a 36T rear that would run 32 MPH pretty well and 39.7 top speed. After 400 miles, I blew it up (wrist pin bearing went, I knew I should have replaced it)... but even getting to those 400 miles was a constant battle with reliability. And you guys with electrics always seemed so happy :lol:
I live in a small town just south of Austin, TX, and I really enjoyed having a motorized bicycle to run errands. A 10 mile loop lets me hit the post office, the drug store, Target, Lowe's, fast food, etc. And the speed limit on those roads is 35 MPH. Yes, I know I can ride slower on the shoulder, but I really do like keeping up with traffic instead of being a roadblock. I figure if the police did not give me a second look on a 35 MPH 2-smoke, a 35 MPH electric would be ok too, right? I can even dummy pedal (or uphill, actually pedal).
So the goal was to be able to cruise at 35 MPH with a 10 mile range with pedaling from a stand still. The longest distance without a stoplight or sign is about 2 miles. The terrain is a lot of short very slight grades. Nothing too steep, but where I live there are not a lot of long stretches of flat road.
I have a 1993 KHS chromoly steel mountain bike that I am planning to use. Nice large center triangle for batteries and controller, front Rock Shox, feels sturdy and rides smoothly. It was my former hike and bike trail pedal bike until I found a great deal on an older Cannondale...
My original plan was to go with a 48V 1000W yescomusa rear wheel kit and run 15AH worth of 14s lipo, figuring that would get me to 30 MPH and I would just upgrade the controller and add more batteries as I budgeted more for the project.
But then I decided I would just be happier taking a bit longer to piece my kit together and try to reach my goals with my first setup. So this is my current plan:
From cell_man's EM3ev site:
- MXUS DD motor (not sure of the wind? I weigh 200lbs... Maybe the 305 rpm?)
- 12 FET controller with the IRFB4110 fets, running 20s. 22s? 24s?
- Laced into the 26" Alex DM24 rim
That kit, shipped via SAL would be around $375, putting me $100 over the yescomusa kit, but I would hopefully not have to upgrade the controller to reach my 35 MPH goal?
I saw another similar post with similar goals and he was talking about going with the MAC geared motor instead, is a geared motor better than a DD for this type of use?
I am hoping to get in on the next run of Doc's torque arms in January, too.
Am I way off base with that setup?