Hi folks, I've been loving riding around on an xtracycle based ebike with an ezee rear hub motor and a sempu t4 (I think) torque sensor. I've been spinning out the top end though on the 48T chainring and wanted to swap it out for 52T; or even ideally a dual ring.
The trouble is so far the chainrings we've tried havent fit the sempu spider. I thought it should be fairly generic at 110 BCD but it doesnt seem the case. I thought I could step back a little and replace the whole crank spider and get a more generic chainring, but the stores' advice is that the crank spider for the sempu T4 is proprietary and integral to the torque sensor. This seems a little odd and I wondered what experience others have had with the sempu T4, has anyone tried replacing the spider or had more success with more generic chainrings?
Appreciate any help or suggestions people can provide.
The trouble is so far the chainrings we've tried havent fit the sempu spider. I thought it should be fairly generic at 110 BCD but it doesnt seem the case. I thought I could step back a little and replace the whole crank spider and get a more generic chainring, but the stores' advice is that the crank spider for the sempu T4 is proprietary and integral to the torque sensor. This seems a little odd and I wondered what experience others have had with the sempu T4, has anyone tried replacing the spider or had more success with more generic chainrings?
Appreciate any help or suggestions people can provide.