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By HISUN Sector 750 EPS Failu
"Mrs. Smith" doesn't like how loud our Sector 750 is. On a HISUN forum someone said the same thing about his 750. I haven't given it much thought because I've been more focused on stuff that has broken.
So, I used my decibel meter to check ours out. 4000 RPM, Low gear, under 20 MPH . . . . 97 decibels. That's above most ordinances, even state boat noise limits.
AI Overview Ninety-seven (97) decibels is considered very loud and dangerous to hearing with prolonged exposure, roughly equivalent to a newspaper press, a loud nightclub, or a snowmobile. At this level, damage can occur after just 30 minutes, necessitating hearing protection -
By kmiller7351
Trying to get running a 550 Colman running but I think head gasket went bad. Do i just replace with new gasket, clean up and replace or is there more to it?
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By Tommy2bits
Just bought a brand new 2022 (NOS) Sector E1 with Lithium upgrade. (Single 135ah/200amp continuous). I've climbed a moderate hill in my woods probably 20 times since buying it. Today It won't climb it unless I am in Low. In High it almost makes it and then completely dies and I have to roll back down the hill. In Mid range (Max Range) I can't get 2 feet up the hill and the power output in only 100 amps, I have climbed this hill in every speed before many times. I put it on the trailer tonight and it wouldn't even get on the dang trailer in mid range. Torque is gone. That being said, when I am just cruising around in Midrange, it runs absolutely perfect with plenty of power. The only thing I did was charge it up, that is all. I charged to 100% using the charger that came with the battery. Before you think the BMS is shutting down due to overcharge protection, remember I am going UP hill so there is no regeneration AND I have done it before at 100% charge AND another big problem is that after 1 mile it is already down to 85% so it's not over charging and why is the battery draining so fast when I got 27 miles before. Battery output is fine in Low it pulls 200 amp up the hill just like normal so that doesn't point to the battery being the issue. All the individual cells on the battery are in line, so there is no dead cell either. I am tech savvy but to toward electric motors and I tried to cover all my bases. Please don't tell me basics like torque is reduced in High and Mid. The only thing I can think of is that I smelled something when I took my first drive today and I thought it was the Ebrake dragging but there was the correct amount of play in the cable and I jacked up the rear wheels and they spin freely. maybe something burned out in the motor, I do not knowm still runs great, we'll see if I have any trouble on the hills at the lake house this weekend. Maybe this is "Normal" and the settings were off before and was giving equal torque for whatever reason instead of 50% in Mid and 70% in High like the manual says....
For reference....this is it not even able to get on the trailer in mid range
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