Going to have The Wheel Master
put a Excel 18x2.5 on my rear hub. Going from a 4.25" wide rim to a 2.5" had me worried, but the Tire Sizes Explained
page on Dennis Kirk helped me. This table is at the bottom of that page and shows what tire sizes are recommended for different rim widths. 130/90-18 D606 will work!
|Permissible Rim Widths||Metric||Alpha||Standard Inch||Low Profile Inch|
|2.15, 2.50, 2.75||110||MN||4.00||4.60|
|2.15, 2.50, 2.75||110||MP||4.25||4.25/85|
|2.15, 2.50, 2.75||120||MR||4.50||4.25/85|
|2.15, 2.50, 2.75||120||MS||4.75||5.10|
|2.50, 2.75, 3.00||130||MT||5.00||5.10|
|2.75, 3.00, 3.50||140|| MU||5.50||-|
Off the bike.
Getting the brake disc off required heat and the hand impact driver. For the bearings, the Blind Hole Bearing puller is the ticket! One bearing seamed OK, one did not...
Drove the cush bearing out with the socket and extension. The bearing looked pretty crusty but spun free, maybe a bit sloppy.
Bearings and 520 conversion are on order from ProCycle.