|Super Light Steel||PBLed|
May 8, 2003 6:51 PM
|I am looking for any input on the new light steel tubesets that are out there. Does anyone have any experience with the stuff? Has the durability been seriously compromised compared to more traditional steel tubes? I am 6'4, 170, and specifically looking at True Temper's S3, Columbus Ultra Foco, and Dedacciai EOM 16.5. Is one set better than the others, or is sticking with 853 or OX the best bet for a fast racer that will last the test of time?
May 8, 2003 7:03 PM
|a buddy has been riding a super prodigy with the extra light thermachrome steel. He's about 6'0" 180. No dents. No problems for him. He thinks its the greatest thing. His bike is sub 18 lbs with full campy record.|
May 8, 2003 7:43 PM
|The durability of the frame will depend on what actual tubes are used. There is often a range of tubes to choose from within each model of tubeset. For example, there may be several different down/top/seat tubes to choose from. To make matters worse, it's quite common large framebuilding manufactuers to custom spec the tubing they want and then hang a standard tubing sticker on the frame even though the tubes are custom.
Getting back to your general question, thin tubes are more likely to crack and/or dent than thicker tubes. They will also be more flexable.
Another thing to consider is the shape of the tube in the frame. Aero shaped tubes may look cool but they are not the best shape to resist bottom bracket deflection - oval is going the wrong way. Tall vertically ovalized tubes will also stiffen the ride quality of the frame since the major axis of the oval is oriented vertically.
My opinion is to look for a frame with more rounded tubes and/or tubes ovalized horizontaly to resist bottom bracket deflection. Also, try to find out the exact tube thicknesses used. Any tube thinner than .5 mm will be prone to denting if abused.
Check the following links for more info on the tubesets in question.
May 9, 2003 2:53 AM
|Come into the light!||Spunout|
May 9, 2003 3:58 AM
|I'm really liking Pegoretti's Marcelo. All round tubing(methinks).
Casati Laser (fillet brazed) is also very beautiful.
Super Prodigy is also in the same league, and much better value.
BTW; I ride a Lemond Zurich in 853, stiff as anything. Sub-20lb bike with Chorus.
|I have a Pegoretti Marcelo. It's a great bike. It's light,||bill|
May 9, 2003 7:14 AM
|comfortable, absolutely laterally stiff, stable . . . it's a cool bike. I'm not sure what it weighs, but something under 19 lbs with pedals, bottle cages, etc.
The paint kind of sucks, unfortunately. Look at it, it chips or scrapes. I need to get it repainted. But, still, no regrets. Very few of them around, too.
You can get Pegoretti to build you a custom steel bike for half the cost of a Litespeed.
|re: Super Light Steel||chaquefois|
May 9, 2003 6:49 AM
|What size frame do you ride at 6' 4"? 62cm? At that size, many builders are reluctant to use the superlight steels you mentioned. Fatique life is an issue along with the fact that a frame that size with super thin walled tubing will be like riding a wet noodle (not stiff at all).
If you are hell bent on superlight steel try Columbus Foco (not ultra foco) with a mega down tube for increased stiffness. Carl Strong builds many of this type. Also, have you ever considered aluminum? Light, stiff, strong, and economical.
|Most builders use size-specific tubesets anyway IMHO. nm||Spunout|
May 9, 2003 7:32 AM
|lemond zurich w/cages & pedals = 18lbs on digital scale.||stik__boy|
May 9, 2003 3:39 PM
|scale is at work and used to precision weigh and weight count large #'s of small items.... calibrated once a month, so believed to be accurate. stock bike, full ultegra, cateye astrale and bottle cages + pedals. interstingly enough.... seat pack + everything i carry in it adds exactly 1 pound.|| |