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i have a specialized hardrock sport disc, i am fed up with it weighing a ton, i am working so much harder to keep up with mates cross country, ( on our road bikes we are even). is it feasible to buy a carbon frame and just take all the parts off my hardrock and put them on the carbon frame. or would i be better off buying a new bike (but im skintish)
any suggestions on which frame (19")
Your Hardrock frame is probably OK at a guess it is 4lb, a really light frame will still tip over 3lb..
If you want to go faster new wheels will make more difference.
As above. What you propose is perfectly possible, but the frame is only making up a small proportion of the weight of the bike and the potential weight savings are only a proportion of that. You'll be lucky to save more than 2 lbs by doing just that. You'll get a bigger difference by changing (roughly in the order I'd look at them) tyres, wheels, forks, cassette, cranks, seatpost/saddle/bars/stem.
And the frame makes up an even smaller proportion of the weight when you factor in the rider.
Lets say you're 80kg and your current frame is 4lb or 1.8kg and your whole bike 13kg so currently your overall weight is 93kg.
We'll be generous and say your nice new shiny carbon frame will come in at 2.5lb or 1.13 kg so your new overall weight will be 92.3kg. Not a big difference really.
Even if you were to make wholesale changes to the ride, or even a whole new superlight xs whippet you've still got that base 80 kg so even if you got yourself a bike weighing in at 9kg you're overall weight is still 89kg and you've spent ££££ to save 5% weight overall.
Are you sure your mates aren't just better xc riders than you?
Cheers
Danny B
I think you'd be better of saving up a bit a getting a whole bike. Full bikes are almost always much better value for money.
The Hardrock is a pretty low end bike with quite heavy workman like components. There is no one area that sticks out as being heavy you could quite easily end up replacing everything for mid range components at a great cost.
Carbon frames usually go for around £500-700+ for HT frames. OnOne usually have some on sale Whippet or C456 for a bit cheaper around £300. Then factor in some money for finishing kit as not everything will be compatible eg seat post size etc...
For the same money as a frame you could get a mid to high end bike eg the Boardman HT which not only being lighter will have better components too. A fork with good damping and adjust ability.
thanks for the reply guys
just after posting this i received a txt from a mate saying that his mate was selling a k2 evo cheaply so i bought that, i will post relevant questions in a seperate post.