gilbertdave
New Member
Hi all,
Apologies if this has been asked before, but a search didn't yield the answer.
I'm jsut going through my first round of drivetrain updates... new cassette, chain and chainring (all 12spd).
Firstly, its blown my mind how many different tools are needed... So, the £200 of parts needs £100's worth of specific tools to install (yikes).
The cassette was a bastard to install and as the 11th and 12th gears didn't perfectly stack the first time I've pulled the thread off of the aluminium lockring.... It calls for 40Nm, but I guess I wasn't fully engage and off she popped... Fitted a replacement. Lucky.
The chainring though is baffling me. I ordered an e thirteen chainring to match the spec of my Trek Rail, whcih clearly shows the Bosch Gen 4 as compatible. Upon arrival, the spline teeth are much finer that my bosch motor (which I guess means its a shimano part?)
So, now I've set about tring to buy a suitable part and I can't get there...
It looks like I can get a spider for next to no money (anyone know if these are any good?)
Meaning then that all I need is a chain ring with 104 PCD (no probs) that is compatible with 12 spd...
These are rare as rocking horse shit?
I can't get my head round how few products are on the market given the quantity of ebikes running Bosch motors and how frequently these parts need changing... AM i missing something or am I really going to NOT ride for 2 months whilst some dingbat builds some stock?
HELP, please
Apologies if this has been asked before, but a search didn't yield the answer.
I'm jsut going through my first round of drivetrain updates... new cassette, chain and chainring (all 12spd).
Firstly, its blown my mind how many different tools are needed... So, the £200 of parts needs £100's worth of specific tools to install (yikes).
The cassette was a bastard to install and as the 11th and 12th gears didn't perfectly stack the first time I've pulled the thread off of the aluminium lockring.... It calls for 40Nm, but I guess I wasn't fully engage and off she popped... Fitted a replacement. Lucky.
The chainring though is baffling me. I ordered an e thirteen chainring to match the spec of my Trek Rail, whcih clearly shows the Bosch Gen 4 as compatible. Upon arrival, the spline teeth are much finer that my bosch motor (which I guess means its a shimano part?)
So, now I've set about tring to buy a suitable part and I can't get there...
It looks like I can get a spider for next to no money (anyone know if these are any good?)
Meaning then that all I need is a chain ring with 104 PCD (no probs) that is compatible with 12 spd...
These are rare as rocking horse shit?
I can't get my head round how few products are on the market given the quantity of ebikes running Bosch motors and how frequently these parts need changing... AM i missing something or am I really going to NOT ride for 2 months whilst some dingbat builds some stock?
HELP, please
