Phal44
New Member
I recently bought a Cube Stereo Hybrid 160 and as per some discussions in other threads, I've started experiencing issues with this bike (250 or so miles done).
I've been trying to get in touch with Cube for some assistance but this is proving to be difficult since they can't manage to receive all of my emails. This is starting to get pretty frustrating as the most I've gotten from them in over a week is emails telling me to send the details again. They get my emails asking for an update but not any with my details it seems...
My issue has developed over the time I've had the bike. A creaking developed gradually and it was coming from somewhere near the bottom bracket. The creak gradually got more frequent and a little louder and my research online seemed to point to loose motor mounting bolts.
Once I had obtained the relevant torx plus 40 bit and torque wrench (topeak digital torque wrench), I checked each of the 6 bolts and found the most rear right bolt to be very loose (I would have been able to tell this by hand if I could have reached it better sinceit was the bolt behind the cog on the cranks). I torqued this to 22nm initially as I'd found a few different figures for Cube bikes online and this was the lowest but the creaking continued.
Last weekend, I spoke with someone at Hargroves Cycles to verify the correct torque for this bike/motor and I was advised that 30nm was recommended by Bosch.
I removed each bolt and re-torqued them to 30nm but the creaking continued.
As a last attempt to fix this today, I removed all the bolts and lowered the motor out to a platform under my bike in its work stand. I cleared around each of the motor mount holes to remove any dust/dirt/sand etc. I put the motor back in place and started tightening the bolts with my torque wrench.
The same bolt that originally got loose was making a few crunching sounds. I stopped tightening and removed the bolt again to find the area around the bolt hole seems to be getting crushed. The paint on the frame around this is all cracked. I feel if I keep torquing the bolt then it will just crush the carbon fibre further.
Not looking good!
I've been trying to get in touch with Cube for some assistance but this is proving to be difficult since they can't manage to receive all of my emails. This is starting to get pretty frustrating as the most I've gotten from them in over a week is emails telling me to send the details again. They get my emails asking for an update but not any with my details it seems...
My issue has developed over the time I've had the bike. A creaking developed gradually and it was coming from somewhere near the bottom bracket. The creak gradually got more frequent and a little louder and my research online seemed to point to loose motor mounting bolts.
Once I had obtained the relevant torx plus 40 bit and torque wrench (topeak digital torque wrench), I checked each of the 6 bolts and found the most rear right bolt to be very loose (I would have been able to tell this by hand if I could have reached it better sinceit was the bolt behind the cog on the cranks). I torqued this to 22nm initially as I'd found a few different figures for Cube bikes online and this was the lowest but the creaking continued.
Last weekend, I spoke with someone at Hargroves Cycles to verify the correct torque for this bike/motor and I was advised that 30nm was recommended by Bosch.
I removed each bolt and re-torqued them to 30nm but the creaking continued.
As a last attempt to fix this today, I removed all the bolts and lowered the motor out to a platform under my bike in its work stand. I cleared around each of the motor mount holes to remove any dust/dirt/sand etc. I put the motor back in place and started tightening the bolts with my torque wrench.
The same bolt that originally got loose was making a few crunching sounds. I stopped tightening and removed the bolt again to find the area around the bolt hole seems to be getting crushed. The paint on the frame around this is all cracked. I feel if I keep torquing the bolt then it will just crush the carbon fibre further.
Not looking good!