Ok, enigma risolto....x la serie "si faccia una domanda e si dia una risposta" eccoli trovati sono Surly Large Marge rim, da ben 65 mm!!!!
ecco un'immagine
e la decrizione...
24", 26" and offset-drilled versions for Pugsley now in stock!
Check out Large Marge. These black anodized, eyeleted, double-walled 24" and 26" hoops are 65mm wide. They feature machined sidewalls for those of you who may want to use rim brakes
Magura® hydraulic rim brakes, traditional cantilevers, and linear-pull with 2.2-2.4" tires (larger tires may interfere with the cross-over wire). The cross-sectional profile gives our rim incredible strength, while shedding snow and sand to keep the rotational mass as low as possible. We offer Large Marge in a number of configurations: 32-hole and 36-hole downhill rims are available in 24" and 26" sizes, and a 32-hole cruiser/cross country version is available in the 26" size. Whats the difference between the cross-country and DH rims? The cross-country rim is machined, at its outer wall, to shave some grams. Whats the weight? The 26" DH rim
1150 grams, the 26" XC rim
1050 grams, and the 24" DH rims
1050 grams. All are drilled for Presta (French) valves, but any bike shop can drill them out for use with Schrader (American) valves.
Note: We offer special Large Marge rims that are offset-drilled to give more dish to the disc side of Pugsley wheels.
Youre going to need a fat-tire cruiser frameset, a DH-style frame and fork, or a non-standard XC frame and fork
like the Surly Pugsley
to use Large Marge rims. Most stock XC frames and forks simply dont have the clearance for wide rims and fat rubber. Other options: Some custom builders will be happy to build a frame and fork for you. Or, you could chop the cantilever bosses from a 1x1 frame and fork or from an Instigator frame and fork, allowing the wide rim/tire combo to fit into the frame without brake boss interference. Depending on the make and model of tire, and the position of the wheel in the rear dropouts, 2.7-3.0" tires will fit in the 1x1 frame. The Instigator can handle 2.6-2.7" tires.
Read this!