|How much is 2lbs worth?||Live Steam|
Aug 22, 2001 9:24 AM
|I want to scrub about 2lbs off of my Colnago Crystal/Record setup. It is currently set up as follows:
-Full Record Ti gruppo except for the seat post which is Chorus.
-Threaded chromoly fork with 1" steerer
-Mavic Open Pro with Record hubs - built by Wheelsmith - 36 hole
MY thoughts are to do the following:
-go threadless with a carbon fork
-change wheels and hubs
My components as they are:
-seat post 236g
-quill stem 260g
-wheels 1960g I think?
Any ideas on components to lighten the load? Also, components on sale would help matters as I would like to do this on a shoe string. :-)
|The most cost-efficient and effective...||MrCelloBoy|
Aug 22, 2001 9:43 AM
|tactic would be to lose 2 lbs. of body weight!
No kidding. Unless you're a lucky fat deprived dude.
Light tubes and kevlar beaded tires might be the cheaest and most noticable upgrade.
Carbon seatpost and bars could help.
|I certainly appreciate all of the replies .......||Live Steam|
Aug 22, 2001 2:02 PM
|I have dropped a few pounds recently. Four to be exact - 180 down to 176 and looking at 170 - 172. However, I figure with my weight loss and shaving a few more off of the bike, I will really realize some benefits, especially when climbing. I am going to take the responses under advisement ( meaning I'll have to do a little shopping to see if spending the dough is within the budget I set ) Thanks again.
|re: How much is 2lbs worth?||PaulCL|
Aug 22, 2001 9:52 AM
|I agree. Lose 2lbs off you first. But if that isn't an option...you will notice it the most in the wheels. For super light clinchers, try the speeddream aerolights at 1400 grams - there's 1 1/4 lbs! Of course, that will cost you about $440 per pound. I'm not sure, but maybe a carbon fiber fork will save some weight.
So how much does the full bike weigh now?? With all Record and a Colnago frame (I'm unfamiliar with your particular model), you still have to be in the 18-19lb range??
|re: How much is 2lbs worth?||Skip|
Aug 22, 2001 10:13 AM
|My weights, and potential weight savings for you:
AME all carbon Alpha-Q fork: 395.76 g (334g)
Bold Ti seat post: 137.29g ( 98g)
Velomax Ascent wheels: 1472g (488g)
That will save you 920g or 2.02#
You may also save weight with:
SLR saddle: 118g
3TTT 199 HB: 200g
ITM or Ritchey stem: approx. 156g
|If you are on a shoe string budget you better loose weight...||Bruno S|
Aug 22, 2001 10:21 AM
|because once you get to about 19 lbs, for each 1/4 lbs of weight you shave you will be paying about $100. According to my calculations.|
|re: How much is 2lbs worth?||davtnyc|
Aug 22, 2001 11:01 AM
|train a bit more, have all your teeth removed and your jaw wired (with kevlar). losing 2 to 5lb of body weight is cheaper and much more effective
other than that velomax ascent comp wheels with veloflex pave tires will have the most impact - but will cost you $800-
|re: How much is 2lbs worth?||I'llridethrushit|
Aug 22, 2001 12:44 PM
|-fork 730g - that is heavy!!! go with a carbon fork - many good threadless ones out there depending on rake, your weight, etc. Savings: 350 grams
-headset 135g - threadless - 35 grams
-seat post 236g - USE alien carbon. Savings: 100 grams
-quill stem 260g - Deda magic, Cinelli solido....savings: 100 grams
-wheels 1960g I think? Speeddreams, Nimble Spiders...about 500 grams.
total 3321g total savings: about 1100 grams or about 2.4ish lbs.
Cost: a lot...over 700 bucks. but it is less than a dollar per gram :)
|Grab your calculator and ...||Humma Hah|
Aug 22, 2001 2:17 PM
|... gather up conversion constants from English to metric, and log onto
This site will let you figure how much time you'd save on a particular hill (length and grade) by trimming weight from a bike. You can then decide if it is worth it to you.
You're talking about saving about a kilogram. That will be a detectable difference in performance. Individual changes of an ounce or two are much harder to justify alone.
Dog did some calculations on this once and showed something like, if I recall, a fraction of a second improvement for dropping an ounce. I pointed out that you could get the same improvement by increasing your power output by a few hundred microwatts. Be sure you try small power adjustments to see if you won't get more improvement by just trying a few percent harder.
|re: How much is 2lbs worth?||grzy mnky|
Aug 22, 2001 5:39 PM
|On a shoe string? Good luck! |
Dump all of the listed components and go threadless w/carbon steerer and some spiffy hoops. My suggestion and weight budget (off the top of my head) - Fork 350 g. (Ouzo or the like), headset: King (might as well get the best 100g.)Stem: Ritchey WCS 125 g. Seat post Thomson at 175g. or carbon at something like 135g? Wheels: 1600 g. for a pair of something sweet. Total weight savings are on the order of 1100g. or 38.8 ounces or 2.4 lbs. Cost ~$550 for the parts and something between $400 and $800+ for the wheels. So you're looking at a minimum of a grand, but it works out to something like $25 per ounce which is good value. I'd also give a hard look at your pedals and handle bars. I was thinking about the seat, but I figure that comfort and fit are way more important than say 50 g. in this area. There are a few insanely light seats out there, but after seeing them I'm not sure I'd want to ride a century on them. Tho' looks can be deceiving.....
|Thanks grzy||Live Steam|
Aug 22, 2001 6:15 PM
|My butt's happy with my Selle Max Flite saddle. I am presently using Look 396 pedals. These can be changed out for something lighter, but the Saeco Team colors look great with the bikes paint scheme. I am going to have to do some shopping around for good pricing on the parts you suggested. I have three sets of Spinergy Xaeros available to me at $500 per pair - two are Shimano and one is Campy compatable. The Campy set is black with yellow spokes. It kind of ruins the r,w&b scheme. Black with blue spokes would be fine though. I'll have to see if I can do something about that.|| |