magilacutys
100 µW
Wudup my ebike bros! First post here, love the board.
So I decided over the winter I was going to build a budget bike. I had a roadmaster 26” mtb collecting dust in the garage so all I needed was a kit and battery. I did some research and watched some YouTube videos then grabbed the cc and hoped on eBay...
I ordered this voilamart 1000w rear wheel kit. https://www.ebay.com/itm/Electric-Bicycle-Kit-48V-1000W-Rear-Wheel-E-Bike-Motor-Conversion-Hub-LCD-Meter-/222117405994?_trksid=p2349624.m46890.l49292
And I bought this 48v 20ah battery
https://www.ebay.com/itm/Li-ion-Battery-48V-20AH-Volt-Rechargeable-Bicycle-1000W-E-Bike-Electric-Li-ion-/133632295962?_trksid=p2349624.m46890.l49292
Got everything put together and it worked great except for the pas (I’m pretty sure the magnets are too far away from sensor on my bike, but I haven’t had a chance to get a new bracket setup yet) but the throttle works great. So I hoped on it and took for a test drive to my buddies.
At first everything was great, this thing really hauls! Then I hit a big hill. I pedaled but the bike did most the work. Perfect. That’s what I want. What I did notice however is that my battery indicator dropped all the way down when pulling the hill. It went back up as soon as I got to the top and let off the throttle though, so I figured it’s just the gauge when it’s under a big load. Get to my buddies about 4 miles away and start showing it off. My buddy hops on to take it for a spin and the thing completely shuts off because of a dead battery when he’s about 2 blocks away. He pedals back and I throw it on the charger and it turns right back on. Now I charged the battery when I first got it, but it had been sitting for about a month and a half before I got the bike together so I figure the battery wasn’t fully charged. Charge it while at my buddies for a couple hours and it gets me home just fine.
So I plug it in and let it charge all night then take it for another ride. Again after about 5 miles it loses a lot of power and I have to pedal pretty heavy to get home. It doesn’t completely shut off this time though.
So what should I start troubleshooting? Is my battery shot?(I did buy a warranty) Not really sure how to properly test it. something else? Any help would be greatly appreciated.
Here’s a pic of my bike. I plan to de-badge it and figure out a battery case if I ever get it running right.
So I decided over the winter I was going to build a budget bike. I had a roadmaster 26” mtb collecting dust in the garage so all I needed was a kit and battery. I did some research and watched some YouTube videos then grabbed the cc and hoped on eBay...
I ordered this voilamart 1000w rear wheel kit. https://www.ebay.com/itm/Electric-Bicycle-Kit-48V-1000W-Rear-Wheel-E-Bike-Motor-Conversion-Hub-LCD-Meter-/222117405994?_trksid=p2349624.m46890.l49292
And I bought this 48v 20ah battery
https://www.ebay.com/itm/Li-ion-Battery-48V-20AH-Volt-Rechargeable-Bicycle-1000W-E-Bike-Electric-Li-ion-/133632295962?_trksid=p2349624.m46890.l49292
Got everything put together and it worked great except for the pas (I’m pretty sure the magnets are too far away from sensor on my bike, but I haven’t had a chance to get a new bracket setup yet) but the throttle works great. So I hoped on it and took for a test drive to my buddies.
At first everything was great, this thing really hauls! Then I hit a big hill. I pedaled but the bike did most the work. Perfect. That’s what I want. What I did notice however is that my battery indicator dropped all the way down when pulling the hill. It went back up as soon as I got to the top and let off the throttle though, so I figured it’s just the gauge when it’s under a big load. Get to my buddies about 4 miles away and start showing it off. My buddy hops on to take it for a spin and the thing completely shuts off because of a dead battery when he’s about 2 blocks away. He pedals back and I throw it on the charger and it turns right back on. Now I charged the battery when I first got it, but it had been sitting for about a month and a half before I got the bike together so I figure the battery wasn’t fully charged. Charge it while at my buddies for a couple hours and it gets me home just fine.
So I plug it in and let it charge all night then take it for another ride. Again after about 5 miles it loses a lot of power and I have to pedal pretty heavy to get home. It doesn’t completely shut off this time though.
So what should I start troubleshooting? Is my battery shot?(I did buy a warranty) Not really sure how to properly test it. something else? Any help would be greatly appreciated.
Here’s a pic of my bike. I plan to de-badge it and figure out a battery case if I ever get it running right.