Raleigh Twenty BB Shimano UN-72 + phil wood, or are original cups okay?
Hey there. I'm changing over a Raleigh Twenty's bottom bracket from the cottered axle to a Shimano UN-72. I've read that this is possible with Phil Wood's 26tpi cups, but has anyone had any experience in fitting the UN-72 with the original cups, and whether or not this works?
Thanks for your time