A 21lb bike today will be lightyears faster and more durable than a 20 year old 21lb bike, and in inflation adjusted terms you're kidding yourself if you think the 1993 version was cheaper. Talking earlier about what you can buy for 1k now vs then, well 1k from 1993 is about ~1.6k in modern monopoly money.
A new Scott Scale 640 is a good comparo, has all the lockouts, disc brakes, hundreds of gears, 1.6k and its 24.01lb.
As for 35lb AM bikes, well mine is ~28lb (will be ~30 with a dropper post fitted) and every pound is added function (I wish I could say the same for me).
My gated racing (e.g. 4X/Slalom) and general 'FAB' hardtail is 10.9kg/24lb with a chainguide, burly rims, 760mm wide bars, 20mm through axle fork, big flat pedals; its done a number of seasons with only consumables and we're talking a 100kg rider and bashing over 20'+ gaps on the regular. Like to see a 16" zaskar with a Judy DH and an MRP do that!
Pyro Tim wrote:
It's happened in cars. The Mark 1 Golf GTI is still the fastest made Golf GTI, as the new ones are so heavy
Well it isn't, actually.
0-60 - 9s
1/4 mile - 17s
Top speed - 113mph
0-60 - 6.7s
1/4 mile - mid 14s
Top Speed - 149mph
If you took a stock example of each to the track the new one would whip the old one soundly in any measurement you could make.