Carrera ebike

[Grahamsteven]

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]

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?

 

[Grahamsteven]

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?

I think it's in the bottom bracket

 

[saneagle]

I think it's in the bottom bracket

We need to be sure.

 

[Grahamsteven]

I think it's in the bottom bracket

I'm only guessing there is a plate at bottom by the pedals with screws in

 

[Grahamsteven]

I'm only guessing there is a plate at bottom by the pedals with screws in

There's no thick chain that I can see?

 

[saneagle]

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]

I'm only guessing there is a plate at bottom by the pedals with screws in

That's for the motor controller.

 

[Grahamsteven]

 

[Grahamsteven]

View attachment 63253

Going out now into little llandudno not good reception so if idont reply will get back asap

 

[Grahamsteven]

Going out now into little llandudno not good reception so if idont reply will get back asap

Can take more pictures later thanks

 

[saneagle]

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]

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

 

[Grahamsteven]

Hi thanks for the information much appreciated thank you

Hi just one last thing do you know of any tuning kits or restricting kits available thank you

 

[saneagle]

Hi just one last thing do you know of any tuning kits or restricting kits available thank you

I've never seen one, and your version has CANbus comms, so not easy to hack, but if I had the bike and wanted to speed it up a bit, I'd be looking at a frequency divider on the speed sensor wire in the motor cable. It would be simple to do if you know basic electrical stuff and can solder. I think somebody copied my idea and is selling it for the Mahle system with standard 9-pin connectors as a simple plug-in device. If your motor has the 9-pin connector, it might work directly, but it's an expensive gamble for something you can make for a few quid.

 

[Grahamsteven]

I've never seen one, and your version has CANbus comms, so not easy to hack, but if I had the bike and wanted to speed it up a bit, I'd be looking at a frequency divider on the speed sensor wire in the motor cable. It would be simple to do if you know basic electrical stuff and can solder. I think somebody copied my idea and is selling it for the Mahle system with standard 9-pin connectors as a simple plug-in device. If your motor has the 9-pin connector, it might work directly, but it's an expensive gamble for something you can make for a few quid.

Hi thanks for that looked at the 9 pin connectors but pins are diifrent if I was a bitt more savy with electic and soldering I'd have a go thanks for your help if any thing comes to mind let me know thanks a lot Graham