siavash.z

Hi folks, thanks for all your replies. I’ve recorded a video showing exactly what the problem is, which should hopefully make things clearer. As [mention=3847]saneagle[/mention] suggested, I suppose a 17-amp controller might solve the issue. Click: Here is the link to the video

Moma eMTB Motor Upgrade Issue – Motor Cuts Out After Few Seconds Hello everyone, I’m having a problem with my Moma eMTB and I’d really appreciate some advice. Original Specs: Rear motor: AKM 95RX 250W (brushless) Battery: 48V 6.25Ah (6250mAh) – although I’m not fully confident about this, based on this discussion: Controller: KZQW22A What Happened: Unfortunately, my original motor got damaged (long story ), so I had to replace it. I tried to find the same 250W motor but couldn’t, so I bought: Replacement motor: AKM 95RX 350W I installed it on the bike, and everything fits properly. The Problem: When I start pedalling, the motor activates normally, but: It makes a repeated clicking/strange noise (very loud/ and louder) After a few seconds, it cuts out Then after pedaling again it works again with the clicking noise and stops again.... I also tried another motor (500W), and I get exactly the same issue. My Questions: Now I’m confused about where the problem is: Is my controller not compatible with higher wattage motors (350W / 500W)? Could the controller be damaged? Could it be a battery or voltage/current limitation issue? Or is there something wrong with the wiring, hall sensors, or connectors? I don’t have much electrical knowledge, and I really don’t want to keep spending money without knowing what the real problem is. Any advice on how to diagnose this properly would be greatly appreciated. What should I check first before buying more parts?