I’ve recently gotten into road climbing both for training and for the fun and added variety. There are some awesome street climbs in my immediate area that are huge favorites of road bikers, so I wanted to see just how light I could make my KH 29er. I had been using my kh 24 in a lightweight setup, but it just wasn’t practical for longer, sustained climbs of any serious distance.
So today I swapped out the heavy wtb 29 x 2.3 stout tire and tube, and got a very light (630g) 2.1 “Vee Rubber” hybrid mtb tire, with a max of 65 psi, and a 700 x 35-43 lightweight tube. The ramped knobs on top make for a super fast roller. Schwalbe has one of the very lightest mtb 29er tires available. It’s the “Furious Fred” and weighs in at a scant 360g! But I would be concerned with the higher risk of punctures and blowouts due to the super thin sidewalls.
Also used ultra light nimbus isis cranks and very light wellgo MG1 pedals, at around 380g per pair. Then a thomson seatpost, CF base and lift handle. Total weight is exactly 11 pounds! Should make a killer climbing machine! I will be adding a shortened T-handle and maggie brake to the mix, which will add maybe another 1.5 lbs, but the good thing is that it won’t affect the rotational weight.