Velocity A23 in 650B (700C, too)
28h 650B rims are on sale. Details here.
The A23 road rim Velocity started making in 2010 is slightly wider than normal road rims. For the “road” market the 23mm width of the A23 has purported benefits when used with narrow tires. When I started using the 700C A23 for wheelbuilds I was impressed with the strength to weight ratio of the rim, the uniformity of the rim joint, and thought it would make a great 650B rim. 650B riders need wider rims for the 38mm+ tires typically used on 650B bikes.
I expect a shipment of 650B A23′s from Velocity by the end of the month. The rims, like all Velocity rims made since January, are manufactured in Florida.
The 650B A23 rims will will come in silver only. Drillings on the first batch are 28,32,and 36H. The sidewalls will be non-machined, just like the 650B Synergy rims.* Available a la carte and for wheelbuilds.
Rims will be $75. If you pre-order 650B A23′s you’ll get 10% off your rims. To get the A23′s rolled into 650B I had to order a substantially larger number of rims than my usual rim order, so pre-orders will help me and I hope the discount helps you.
If you are having your wheels built at a local shop they can order the rims from us. Local bike shops and framebuilders can email the shop for dealer pricing.
*Why non-machined sidewalls? Mostly because machined sidewalls on anodized rims aren’t necessary, remove a little sidewall material and potentially decrease the lifespan of a rim. A well-built wheel’s weakest link (in normal usage) is the thickness of the rim sidewall. In normal usage the wheel will last until the sidewall has been worn too thin by the brake pads.
Machining rim sidewalls became “standard” in the industry in the last couple of decades, but their main benefit for manufacturers was to make rims feel better on bicycle test rides by masking rim joint irregularities, not improve braking performance. The inevitable dirt on brake pads and brake usage will “machine” the sidewall of bicycle rims in use. Powdercoated rims need machined sidewalls to be used with rim brakes. Non-machined powdercoated rims will often squeal loudly and always brake poorly when used with rim brakes until the brake pads wear through the powdercoat. I do not know if the ubiquity of machined sidewall rims or the recent popularity of powdercoated rims has fostered the misunderstanding that all rims must be machined to work with rim brakes, but that misunderstanding is out there. Most of my customers know better, but I get the question from time to time with other rims.