Bike slowsdown

Chuck T

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Feb 22, 2024
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27
Location
Florida
2024 Zeegr Boombike S1 Dual Motor Ebike 2000w

I have put 2360 miles on the bike. Most of the milage at Pas3 23mph or Pas4 30mph. I only use Pas5 35mph when stuck in traffic and need the extra speed or showing off. Recently when in Pas5 35mph sometimes the bike starts to slow down dropping down to approx. 18 to 23 mph. I can drop to a lower Pas setting and speed will increase to that Pas setting. I can start the front motor both motors and speed will increase to Pas5 35mph setting and it will stay at speed with both motors running. After running both motors @ Pas5 35mph I can go back to rear motor only and run Pas5 35mph. I ride nearly every day weather permitting. This hasn’t been an everyday event, but it is more frequent every day. This happens only on the Pas5 35mph setting, using throttle or pedaling. I ride 95% of the time using the pedals.

I have gone through the wiring many times and can’t find any loose or frayed wiring. It will do it regardless of the weather, time of day or terrain.

The battery and controls are warm (as they should be) but not hot when this issue occurs.



I welcome any advice you have.



Chuck
 
I have had this happen to me a few times. I think the controllers get confused temporarily when making on the fly changes with the controls.

Next time it happens, try tapping the brake handle to deactivate the motors, & then just roll on the throttle or keep pedaling.

I basically think it is just a temporary glitch in the programming under certain conditions.
 
2024 Zeegr Boombike S1 Dual Motor Ebike 2000w

I have put 2360 miles on the bike. Most of the milage at Pas3 23mph or Pas4 30mph. I only use Pas5 35mph when stuck in traffic and need the extra speed or showing off. Recently when in Pas5 35mph sometimes the bike starts to slow down dropping down to approx. 18 to 23 mph. I can drop to a lower Pas setting and speed will increase to that Pas setting. I can start the front motor both motors and speed will increase to Pas5 35mph setting and it will stay at speed with both motors running. After running both motors @ Pas5 35mph I can go back to rear motor only and run Pas5 35mph. I ride nearly every day weather permitting. This hasn’t been an everyday event, but it is more frequent every day. This happens only on the Pas5 35mph setting, using throttle or pedaling. I ride 95% of the time using the pedals.

I have gone through the wiring many times and can’t find any loose or frayed wiring. It will do it regardless of the weather, time of day or terrain.

The battery and controls are warm (as they should be) but not hot when this issue occurs.



I welcome any advice you have.



Chuck
What is the terrain like where you ride?
 
Controllers not interchangeable. Bike will only go 32mph with rear motor unpluged, has not done it on front motor only. Don't believe anything over heating by touching them. Have had this issue happen wether temp is 100 degree or 40 degree. have drilled holes in their cases for ventalation with no help. Terrian is Florida not many steep hils as stated in post. I'm aware it will slow down going up hills.
Thanks for all replys keep them coming. Chuck
 
Have you gone into any advanced settings lately and changed anything at all? Also, wandering around trying to figure this out, I found Addertooth, a well known member here has one of these ebikes. It might be a good idea to reach out to him and see if he has ever heard of this happening.
 
I've been thinking about this some more and I think the issue may come down to having 2 controllers and 1 display. What are your advanced settings like? Can you set different parameters for each controller? Do you have different assist levels that can be set for each one and is Pas 5 set differently on them? Endless Sphere has some threads on the topic and the signaling can become very complex. Tell us more about what your display let's you adjust.
 
2 Controllers,Only one display setting, can't set seperately. 0-5 Pas levels can't be set. Can set Wheel Diameter,Voltage,Top Speed and Pedal Assist.
Chuck
 
You have a fair amount of miles on your bike so the possibilities become tricky. You could put on a new pedal assist sensor and calibrate it for the proper distance and see if that helps. When they are old, I have read, they can malfunction at higher speeds. It's a cheap place to start.
 
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