Carrera ebike

Grahamsteven

Finding my (electric) wheels
May 19, 2025
9
0
65
Stoke-on-Trent
Hi I have a carrera crossfire ebike my second one brought the first one in 2019 now got the new one the new one ok but struggles up steep banks as we cycle round the Great orm llandudno don't want more speed want more power anybody got any ideas. The first bike flew round thanks
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,454
3,848
Telford
Hi I have a carrera crossfire ebike my second one brought the first one in 2019 now got the new one the new one ok but struggles up steep banks as we cycle round the Great orm llandudno don't want more speed want more power anybody got any ideas. The first bike flew round thanks
Does your new one have the torque sensor in the bottom bracket or does it have the big thick chainwheel with the torque sensor in the back?
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,454
3,848
Telford
There's no thick chain that I can see?
It's not the chain that's thick, rather the chainwheel because most have the torque sensor mechanism in it. A normal chainwheel is just a big cogwheel with the pedal arm attached in the centre.

Takes some photos if you're not sure.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,454
3,848
Telford
Can take more pictures later thanks
That's enough, thanks. The photo shows that both bikes have the later BB torque sensor. That system is more difficult to deal with on a DIY basis. Everything is sealed and you need specific diagnostic equipment to figure out what's going on, and I doubt that even Halfords have that or understand how to use it.

All I can suggest is that there's normally a self-calibration procedure at start up. If anything touches the pedals at that time, it can mess up the setting, so make sure that everything is clear of the pedals when you switch on.
 

Grahamsteven

Finding my (electric) wheels
May 19, 2025
9
0
65
Stoke-on-Trent
That's enough, thanks. The photo shows that both bikes have the later BB torque sensor. That system is more difficult to deal with on a DIY basis. Everything is sealed and you need specific diagnostic equipment to figure out what's going on, and I doubt that even Halfords have that or understand how to use it.

All I can suggest is that there's normally a self-calibration procedure at start up. If anything touches the pedals at that time, it can mess up the setting, so make sure that everything is clear of the pedals when you switch on.
Hi thanks for the information much appreciated thank you ☝