I agree in essence. It was the reason I only do 29″ wheeled bikes down to a medium. The 26″ Hummingbirds were originally only intended to come in small and medium. It was only people pestering me that made me end up with a large as well – mostly to cater to people with big investments in tyres and the like.
I think a well designed frame will have subtle changes to things like chainstay length, bottom bracket drop, seat and head angle to accomodate the likely body shape of different size people. However in this age of mass production there are really only three relatively mainstream wheel sizes (29, 26, 24 – I won’t count 650B just yet) plus there are further restrictions in commonly available tubing lengths. And of course manufacturers can get more production efficiency (and thus cheaper bikes to a demanding public) the more standardised frame production is. Then you’ve also got the matter that components are designed to work within fairly narrow parameters. Ever tried to get a modern derailleur system working well on a tiny 650c wheeled bike? At the other end of the spectrum, you don’t need to be *that* tall to not want to chop any length of your suspension fork’s steerer at all.
What I did on the new Ragley’s is to steepen the seat angle on the larger bikes, so that the rider is sat further forward on the front wheel.
I guess it depends what you are try to achieve – I suppose the Ragley is more a ‘chuck it around’ kind of thing? For those of us who spend a bit more time with their wheels on the ground and arse in the saddle bigger frames usually get a bit slacker as they have relatively longer femurs. So you need to be a bit further back to maintain pedalling efficiency in having the COG over the pedals.
I guess in a perfect world we’d all have custom designed bikes for our own particular morphology, riding style and preferences. However while price is a factor (for most people) and standardised parts is a factor for everyone we will have to make do to work the best we can within what we have available to us.
Sam
Singular Cycles