worn brake pads and intermittent power loss

[lovedoves]

Bottle holder with one of those squirty style drinks bottles, would be handy for blasting areas like the pedal sensor.

only trouble is thats where the battery lives! i do take a bottle of juice in the pannier, may have to swap it for plain water!

 

[Nealh]

Check the pas and sensor are within 1/2mm, dirt muck shouldn't stop any sensing. I rarely touch or clean my magnetic discs bar a once a year check over and I go offroad proper and use very mucky bridleways.

 

[Fordulike]

Check the pas and sensor are within 1/2mm, dirt muck shouldn't stop any sensing. I rarely touch or clean my magnetic discs bar a once a year check over and I go offroad proper and use very mucky bridleways.

Mud contains water, which is diamagnetic, so weakens the magnetic field of the sensor disc.

That's my theory anyway

 

[Deleted member 4366]

Hi
After cycling on the crossfire for 6 weeks up to Christmas the brakes starting being very noisy and then the front one failed (they are hydraulic disc brakes). When i took it to get seen to, they said the problem was that the brake pads had completely worn out after 6 weeks and this was due to the weight of the bike and it was quite normal for electric bikes(they calculated i had done just over 700 miles). Is this everyone's experience? The thing is, my journey is off road on cycle paths so i hardly have to use the brakes much, i was just surprised how long they didn't last- new brake pads every 700 miles!

That doesn't sound right at all. With hydraulic brakes, the pads last forever. I've done 4000 hilly miles on mine and they're still going strong. Something must have been a long way out of adjustment or Halfords don't know what a worn pad looks like. Hydraulic brakes only need adjusting when you first set them up. After that, you can forget about them for years.

 

[lovedoves]

That doesn't sound right at all. With hydraulic brakes, the pads last forever. I've done 4000 hilly miles on mine and they're still going strong. Something must have been a long way out of adjustment or Halfords don't know what a worn pad looks like. Hydraulic brakes only need adjusting when you first set them up. After that, you can forget about them for years.

the first 5 miles of the ride is in a straight line, along the old railway line, so i literally dont have to use them at all, the next bit is tarmac cycle path so, again, i dont feel like i use them that much..i change the ones on my standard bike every year which is around 4000 miles..there's a big difference between 700 and 400 miles for a bit of extra weight..anyway new ones are fitted so i will see how these get on..cheers

 

[Woosh]

don't take the word of the shop too literally, check the pads if they are truly worn and how evenly they are worn.
Sometimes it's just a matter of adjusting.
Pads on hydraulic brakes are hard wearing, especially on the rear.

 

[lovedoves]

Check the pas and sensor are within 1/2mm, dirt muck shouldn't stop any sensing. I rarely touch or clean my magnetic discs bar a once a year check over and I go offroad proper and use very mucky bridleways.

thanks..happened again today..loses assistance for around 10 to 15 seconds then it kicks back in. it may be just a coincidence that its muddy. i think i will take it in to get checked out. i have service plan for a year so it will cost me nowt to get it seen to

 

[Deleted member 4366]

There should be a pedal sensor magnetic disc and magnet sensor on the bottom bracket. Give that a clean with some soapy water.

Check the pas and sensor are within 1/2mm, dirt muck shouldn't stop any sensing. I rarely touch or clean my magnetic discs bar a once a year check over and I go offroad proper and use very mucky bridleways.

It's a Crossfire E. They have an enclosed optical sensor (definite) and a torque sensor of some sorts ( supposedly), so that doesn't apply.

The cut-outs is a known problem from the battery, but that's not to say that's the problem you have. There's some suspicion that the cadence/torque sensing system isn't very robust against salty water that you get on winter roads.

 

[lovedoves]

It's a Crossfire E. They have an enclosed optical sensor (definite) and a torque sensor of some sorts ( supposedly), so that doesn't apply.

The cut-outs is a known problem from the battery, but that's not to say that's the problem you have. There's some suspicion that the cadence/torque sensing system isn't very robust against salty water that you get on winter roads.

thanks, so looks like i may need a bucket of soapy water and sponge in the pannier after all

 

[Madiba]

Try to get hard wearing brake pads. As for the other problem, the sensor on the bottom bracket is dirty and/or knocked out of position. It happens to me occasionally. Flip the bike over, clean and adjust the sensor.

 

[lovedoves]

Try to get hard wearing brake pads. As for the other problem, the sensor on the bottom bracket is dirty and/or knocked out of position. It happens to me occasionally. Flip the bike over, clean and adjust the sensor.

thanks, will give it a good look over asap

 

[Deleted member 4366]

T As for the other problem, the sensor on the bottom bracket is dirty and/or knocked out of position. It happens to me occasionally. Flip the bike over, clean and adjust the sensor.

The Crossfire E has a different system to yours.

 

[lovedoves]

Update
I cleaned the sensor and bottom bracket before leaving work tonight. I took a detour home so that the first 7 miles were tarmac/ asphalt..Pretty dry and mud free...Bike worked fine without even a hiccup..It does look like mud is the problem...May even try to fashion an undercarriage with flexible plastic and tie wraps over the weekend..If not, a rag in the pannier is going to be a must..

Thanks for the help and advice on this thread..I hope to be able to repay in kind at some point

 

[Fordulike]

Just took a look at the Carrera Crossfire-E, and I have to say, that's not a bad bike at all for the price.

Carrera Crossfire-E

 

[lovedoves]

Just took a look at the Carrera Crossfire-E, and I have to say, that's not a bad bike at all for the price.

Carrera Crossfire-E

Unfortunately it's just gone up to £1100 which means people could no longer buy it on the bike to work scheme as it has a £1000 max allowance..Daft really that you cannot add your own cash to a purchase

 

[JohnnyGM7LSI]

On squirrty bottle idea, I use a Heinz tomato sauce bottle, the one with the stay clean nozzle, fill it with water, Muc-Off or whatever, it makes a powerful but accurate mini jet to blast the dirt out of derailleurs, cassettes and calipers and other nooks and crannys.

 

[lovedoves]

On squirrty bottle idea, I use a Heinz tomato sauce bottle, the one with the stay clean nozzle, fill it with water, Muc-Off or whatever, it makes a powerful but accurate mini jet to blast the dirt out of derailleurs, cassettes and calipers and other nooks and crannys.

Good idea mate, looks like I'm going to have to eat a lot of chips over the next few weeks