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Bike weight vs. Rider weight(5 posts)

Bike weight vs. Rider weightCyclingFan
Aug 20, 2001 12:41 AM
Alright, I know that losing 20lbs of unnecessary bodyfat is more important then trimming a couple grams off my bike, this I know. But what is the benefit of upgrading my current roadbike and cutting about 2lbs in overall bike weight? I plan on replacing my Shimano Sora group with Ultegra, a BIG difference in performance and also in weight. The weight will drop about 2lbs when I am completly done. How can I justify cost of upgrading to the spouse? Will 2lbs make a NOTICABLE difference on my roadbike. Will 2lbs be a noticeable difference on the hills and flats? I am physically at about my low-end weight limit of 187lbs for a 6'3" frame. Please respond!!
re: Bike weight vs. Rider weightnuke
Aug 20, 2001 4:53 AM
I've made similar upgrades to two bikes and I immediately noticed the difference on climbs in both cases. Once you're at cruising speed on a flat, I don't think you'll notice a difference other than the smoothness of the crankarms/BB.
total weightDog
Aug 20, 2001 6:23 AM
It's really total weight that matters. Up a hill, your legs really won't know whether the weight is on your gut or the bike. It's pretty much pure physics, your power to weight ratio. Check this website and run some numbers:

You may be able to feel 2 pounds off your bike, but it won't make a significant performance difference in the real world. Two pounds is less than 1% of your total weight on the bike.

All that said, if racing, try to get the weight of everything as low as possible, but still making the same power, reasonably safe and functional.

If weight of the components is the issue, why not spend a little more and go to Dura Ace? I think it knocks another 1/2 pound off. With components, though, I think you'll notice better functionality, durability, and finish with better parts more than the decreased weight.

Despite having obessed about weight myself, the bike and my body, the best riders typically obsess about the engine much more than the bike or equipment. In other words, focus on training.

Aug 20, 2001 2:08 PM
As Doug says it won't make a significant (I'd say, 'a blind bit of...') difference to your average speed or whatever, but there's no reason to think that your spouse will ever know this. The real reason light bikes are better is that it feels great when we pick them up (with one straining finger if you're at school), and we carry this happy feeling with us when we are riding, from where the memory of that supernaturally surprising lightness feeds our fantasies of racing Anquetil or Lance or whoever up the Alpe d'Huez, and winning with that final spurt which this supposedly light and responsive bike delivers. This is entirely reasonable in itself in my judgement, but if others think differently then lie to them, and indulge yourself. There are worse crimes.

Your consort to immorality, Jofa
If it will keep you on the bike more...Made in Taiwan
Aug 20, 2001 8:39 PM
if upgrading to ultegra will keep you on the bike and riding longer then i say go for it. if you know you will want to ride more b/c the bike is now upgraded or if you feel guilty that you spent a lot of money upgrading that bike, then that's reason enough for me :)