The 'in-betweener' wheel size may well be the current hot trend in the mtb world, but we've been thinking outside of the box somewhat; adopting it as the ideal basis for an alternate format 'jack-of-all-trades' dropbar bike aimed at smaller/younger riders.With 700c frame geometry generally compromised on any frame smaller than 50cm (as manufacturers try in vain to make the numbers fit, but not necessarily work) and 650c tyre options extremely limited and unlikely to expand anytime soon, 650b gives us that much needed extra bit of clearance for proper frame fit/geometry with no perceivable loss of rolling speed (vs. 700c) and ample tyre choice moving forward (effectively future-proofed).
With a lightweight double-butted 6061 Aluminium frame and compliant butted Cr-Mo fork paired to a super wide-range youth/entry-level friendly gearing and comfy, large-volume 35c tyres (and clearance to go much bigger), the Col du Glandon is a refreshingly different take on a versatile road bike designed specifically for both smaller and younger riders.
The butting process meanwhile ensures ample wall thickness and strength where required but trims any excess and extra unnecessary weight where it’s not – tuned for optimum performance - both lighter and stiffer.
The smaller wheel size gives us that little bit of extra room to deisgn a compact 47cm frame without compromising the fit or handling (no super-steep seat tube angles here to get the deisred numbers to fit, but not necessarily work.) Spares? A standard 26" innertube will fit fine and there should be plenty of tyre options just around the corner.
A full, new Shimano Claris 8sp groupset (less brakes) adorns the CdG, with super wide-range gearing via the 34/46T chainset matched to the 11-32T cassette
Generous clearances, canti-brakes and eyelets combine for full-length mudguard and front rack compatibility.
|Seat Tube Length (mm)||440|
|Horizontal Toptube Length (mm)||515|
|Headtube Length (mm)||130|
|Chanstay Length (mm)||440|
|BB Drop (mm)||50|
|Wheelbase Length (mm)||1025.7|