Happy Holidays! December 18 2014

Bespoke Chainrings will be taking a break over the Festive Season! Any products purchased after the 18th of December will be sent on 5th of January when we return. Happy Holidays!! 

Gear ratios and Skid Patches November 12 2014

If your considering changing your gear ratio this gear_ratio_skid.xls chart will make the choice easier.

Picking the right ring size for street riding involves a lot of calculations. In general I find that I can choose between three sizes of rear cog without changing chain length. Based on a gear ratio and a quick rear cog change per environment I try to limit my gears to suit that chain length. 

I created this excel spreadsheet a few years back and still find it handy with the math today: gear_ratio_skid.xls.

In particular tyre size makes quite a bit of difference to the gear ratio so I have several tabs down below in the spreadsheet to choose a page per tyre size. 

The new Bespoke Chainrings shop is open for business October 01 2013

The new shiny Bespoke Chainrings shop is open for trading as of 8th October 2013, enjoy!