[yetihammer]

So I am running a Flash 29er with Lefty XLR 90mm. Wanting to build up a Scalpel 650b by swapping components if possible. Does anyone know if I can run the same lefty with the smaller 650b wheelset? Obviously, they will fit, but really wondering about geometry issues, if any, and whether the lefty needs any sort of mod. Thanks in advance.

 

[Prophet Julio]

You can swap it out. The Lefty probably has spacers to reduce the travel for the 29" wheels. In 650b format you could use 110mm of travel. The spacers are 10mm thick, each. There might be 3, for a 26" wheeled bike. MendonCycleSmith will know for sure.