subject: re: re: re: larger Chain Ring for XLM

comments:
: : : I have an XLM and XT compact : : : I think that means a 42 tooth big ring : : : Here is the question : : : 1) Can I put on a larger one, 44 46 ???? : : : 2) Does this mean I have to change bb spidle length : : : or any other complications ??? : : : : : : Thanks : : The whole point of having a compact system is too : : improve the shifting performance of the drivetrain : : under load by utilizing smaller chainrings and rear cog : : selection. Your compact drive system probably uses an 11-28 : : tooth rear cluster 9cogset). The front chainrings are typically : : 22-32-42 or 44. : : With these systems you lose weight and improve shifting performance. : : The "older" higher gear system user a wider range of chainring and rear tooth : : selection that allows you to ride "harder" gears. If you are a real animal, and love torque over high cadence or spinning : : then you are all set with a larger chainwheel selection up front. : : Now, the bad part. With the Xt compact set up you have it is impossible to find a chainring in the : : sizes you need. You can check with the local bike shop and have them skim : : through their local parts distributor to see if anyone makes : : and adaptor to allow you to still use you existing crank. : : Otherwise, you may rethink changing your bb and crank over to the xtr version and using the larger : : gears right away. : : I hope this helps. If I am confusing the issue more than seems humanly possible I : : apologize. Have a great weekend. : : Matt B : : Thanks for getting back to me Matt.. Regards