I’d like to ask for some help in programming my new CA3. I have it basically working, but it is VERY sluggish and low in power (even though it appears that it thinks it’s providing higher power).
Background: I have a basic DIY rear hub bike with a Bafang G020.500W motor (only 400 miles on the motor). It had a generic square wave 18a controller and a DPC18 display. It all worked fine, with plenty of power for the kind of riding I do -- 16 - 18 mph steady-speed riding on roads and paved multi-use trails. However, I didn’t like that I couldn’t program the speeds for the 5 PAS levels, and the throttle would only get me up whatever speed the PAS level supported.
So...I bought a CA3 with throttle and the MFSwitch), a Grinfineon 20a controller, and GRIN’s 24p PAS sensor. The installation went fine. I had already studied the programming manual and had my initial setup saved on the PC. I programmed the CA3 with these settings, but I obviously have something wrong. As I mentioned, it is very sluggish in any PAS level, though they do seem to (barely) work to the speed set for that level. The throttle, however, is REALLY low level, and only seems to work to get me to the speed for that particular PAS level. I never see more than a couple of volts on Throttle Out, even with 4.1 or so volts on Throttle In.
What I want to do: I want to ride at a steady speed at a given PAS level, with the system giving whatever I need to quickly get/keep me there. I want the throttle to override the PAS level assistance, giving me more power up to the maximum speed set (not the PAS level speed).
What I’m seeing: Understanding that I have NO idea about the underlying stuff, it appears to me that the bike seems to think it’s giving me more amps than it is. I can go through the motions with the rear wheel up, and it seems to work. However, it says it’s using around 350 watts to spin the tire in the air at 20 mph (can’t be so). On the street, it says it’s giving 20 amps and 1000+ watts, often showing the "A" as limiting on the diagnostic display, when it can't be anywhere close to that! Even on a very minor incline, the PAS assistance is minimal (as I can feel the power), and the throttle is even worse. When I look at one of the stats pages, it says it’s using around 50 watt-hours per mile (not possible).
Help needed: could someone take a look at the settings in my setup below and tell me what I’ve missed? Or if you have a setup that should work on a basic 48v 500w Bafang ebike (with PAS switch and throttle), could I get a copy of it? If I could get any setup working, I could probably go from there.
A few notes: 1) I do have a basic understanding of the principles, and have programmed my Trek BBSHD bike to do the above. So I think I’m doing the mechanics of this right, but missing something in the interaction of settings. 2) I entered 30AH for my battery, because I routinely run dual batteries in case I go out for a 30-mile ride and end up going 40+ and then the wind kicks up. 3) I’m pretty sure the numbers are right for the PAS sensor (GRIN’s) and the motor speed magnet number - I have the Bafang motor specs and I counted the arrows on a wheel rotation. 4) When I first loaded a setup into the bike, it was VERY surge - surge - surge on both PAS and throttle. That’s why the Amps and Power Feedback gains are set to 10, which pretty much stopped the surging.
Thanx much!
Background: I have a basic DIY rear hub bike with a Bafang G020.500W motor (only 400 miles on the motor). It had a generic square wave 18a controller and a DPC18 display. It all worked fine, with plenty of power for the kind of riding I do -- 16 - 18 mph steady-speed riding on roads and paved multi-use trails. However, I didn’t like that I couldn’t program the speeds for the 5 PAS levels, and the throttle would only get me up whatever speed the PAS level supported.
So...I bought a CA3 with throttle and the MFSwitch), a Grinfineon 20a controller, and GRIN’s 24p PAS sensor. The installation went fine. I had already studied the programming manual and had my initial setup saved on the PC. I programmed the CA3 with these settings, but I obviously have something wrong. As I mentioned, it is very sluggish in any PAS level, though they do seem to (barely) work to the speed set for that level. The throttle, however, is REALLY low level, and only seems to work to get me to the speed for that particular PAS level. I never see more than a couple of volts on Throttle Out, even with 4.1 or so volts on Throttle In.
What I want to do: I want to ride at a steady speed at a given PAS level, with the system giving whatever I need to quickly get/keep me there. I want the throttle to override the PAS level assistance, giving me more power up to the maximum speed set (not the PAS level speed).
What I’m seeing: Understanding that I have NO idea about the underlying stuff, it appears to me that the bike seems to think it’s giving me more amps than it is. I can go through the motions with the rear wheel up, and it seems to work. However, it says it’s using around 350 watts to spin the tire in the air at 20 mph (can’t be so). On the street, it says it’s giving 20 amps and 1000+ watts, often showing the "A" as limiting on the diagnostic display, when it can't be anywhere close to that! Even on a very minor incline, the PAS assistance is minimal (as I can feel the power), and the throttle is even worse. When I look at one of the stats pages, it says it’s using around 50 watt-hours per mile (not possible).
Help needed: could someone take a look at the settings in my setup below and tell me what I’ve missed? Or if you have a setup that should work on a basic 48v 500w Bafang ebike (with PAS switch and throttle), could I get a copy of it? If I could get any setup working, I could probably go from there.
A few notes: 1) I do have a basic understanding of the principles, and have programmed my Trek BBSHD bike to do the above. So I think I’m doing the mechanics of this right, but missing something in the interaction of settings. 2) I entered 30AH for my battery, because I routinely run dual batteries in case I go out for a 30-mile ride and end up going 40+ and then the wind kicks up. 3) I’m pretty sure the numbers are right for the PAS sensor (GRIN’s) and the motor speed magnet number - I have the Bafang motor specs and I counted the arrows on a wheel rotation. 4) When I first loaded a setup into the bike, it was VERY surge - surge - surge on both PAS and throttle. That’s why the Amps and Power Feedback gains are set to 10, which pretty much stopped the surging.
Thanx much!