Nirmala
Active Member
Today my wife and I went for a short relaxed ride around nearby neighborhoods on our brand new Magnum Ui5's. We were generally riding slowly today and when we came to a longer but still not very steep uphill, the motor on my bike cut out 3/4 of the way to the top.It clearly was overheating as it came back on after just a few seconds of resting. My wife's bike had no problems, but then she is about 50 pounds (23 kg) lighter than me. Once the motor cut out, then it continued to turn itself off and back on for the rest of the way up that hill and then a few more times near the top of the next hill we rode up which was also not very steep. Once I sat still for a moment or two, the motor would come back on.
The one thing I can say is that we were riding slowly just for a relaxed experience, and so even though I could have pedaled up the hills faster, I was just pedaling easily. Again these were not super steep hills and I was not even in the lowest gear on the rear cogs. Also, I was just in power assist levels 3 (out of 6). As a result of all of this, the motor was not spinning very fast going up the hills as the wheels were not going very fast. My speedometer was reading in the range of 4-6 mph.
I had some time this afternoon, so I went back out and rode the same route. Only this time, I was not going slow up the hills. I left the assist in levels 4-6 and pedaled harder so I was mostly going 12-14 mph up the same hills where my motor overheated earlier. This time there was no problem, even when I rode up an extra and steeper hill at the end of the more moderate hills I rode earlier in the day.
So I guess I need to keep my speed up whenever possible on the longer uphills to prevent overheating, even when the hill itself is not pushing my motor to the limit. The motor seems to not like turning at slower speeds.
There is quite a learning curve so far with these new ebikes.
The one thing I can say is that we were riding slowly just for a relaxed experience, and so even though I could have pedaled up the hills faster, I was just pedaling easily. Again these were not super steep hills and I was not even in the lowest gear on the rear cogs. Also, I was just in power assist levels 3 (out of 6). As a result of all of this, the motor was not spinning very fast going up the hills as the wheels were not going very fast. My speedometer was reading in the range of 4-6 mph.
I had some time this afternoon, so I went back out and rode the same route. Only this time, I was not going slow up the hills. I left the assist in levels 4-6 and pedaled harder so I was mostly going 12-14 mph up the same hills where my motor overheated earlier. This time there was no problem, even when I rode up an extra and steeper hill at the end of the more moderate hills I rode earlier in the day.
So I guess I need to keep my speed up whenever possible on the longer uphills to prevent overheating, even when the hill itself is not pushing my motor to the limit. The motor seems to not like turning at slower speeds.
There is quite a learning curve so far with these new ebikes.