Dr. Seuss Posted September 21, 2006 Posted September 21, 2006 What is the general sentiment here? <?:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />I know that the tubby wheels are lighter than the clinchers, but is the weight saving worth the hassle? Are tubulars a hassle at all? How about puncture resistance? I am sure that the heavy ones do have puncture protection in them, but it will defeat the point of buying light rims & then loading them with some heavy tires. What about repairs? Do you just throw the tubby away once the broken zamalek has taken it?s toll? (I am talking about road use here) And the safety aspect for those of us who do not have a pro mechanic in the kitchen cupboard to glue these things on?
BikeMax Posted September 21, 2006 Posted September 21, 2006 What is the general sentiment here? <?:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />I know that the tubby wheels are lighter than the clinchers' date=' but is the weight saving worth the hassle? Are tubulars a hassle at all? How about puncture resistance? I am sure that the heavy ones do have puncture protection in them, but it will defeat the point of buying light rims & then loading them with some heavy tires. What about repairs? Do you just throw the tubby away once the broken zamalek has taken it?s toll? (I am talking about road use here) And the safety aspect for those of us who do not have a pro mechanic in the kitchen cupboard to glue these things on? [/quote'] Tough call - and many viewpoints.. Mine (I race on tubs) Weight saving on wheels - greatPuncture resistance - about the sameSafety- learn to glue and take care and you will be fineCost - highRepair - noRide quality - fantasticRolling resistance - about the same There is a new product by Vittoria that re-inflates and repairs a punctured tub in seconds - permanently (great product) Overall - I love them and am willing to undertake the hassle factor for my special race wheels.
bruce Posted September 21, 2006 Posted September 21, 2006 Talking about rolling resistance, apparently the Zipp guys have got tons of test data. Vittoria Evox (I think) requires a massive 4 watts less that Continental Competitions. Doesn't sound like much - but 4 watts when you are on your limit is significant. Coupled with ceramic bearings (another 3-4 watts) and the differences become substantial.
bruce Posted September 21, 2006 Posted September 21, 2006 I ride Zipp 404 tubbys. Agree with Bikemax on all the points except possible rolling resistance because tubbies can be inflated to much higher pressures (14 bar). But then you got to really watch out for punctures - I normally race on about 12 bar.
BikeMax Posted September 21, 2006 Posted September 21, 2006 I ride Zipp 404 tubbys. Agree with Bikemax on all the points except possible rolling resistance because tubbies can be inflated to much higher pressures (14 bar). But then you got to really watch out for punctures - I normally race on about 12 bar. At higher pressure the puncture resistance is greater but the handling sucks.. I run my tubs at 100-110psi and they handle great. No pinch flats with tubs is the advantage so you can run them lower and corner harder
bruce Posted September 21, 2006 Posted September 21, 2006 Hmmn, the guys at one of the LBS's near me swear that you get more punctures if you inflate very high, not pinch flats, but punctures from glass etc. Fortunately I have not experienced too many punctures so I can't confirm that from my own experience.
nochain Posted September 21, 2006 Posted September 21, 2006 Bruce ,where did you get that info on the Vittoria's ?I went to there website and they have a whole range of evo tubbies , I ride on cont comp at the moment but if the difference is that big with vittoria's then I would like to try them.Just want to make sure I buy the right one's!
CK-1 Posted September 21, 2006 Posted September 21, 2006 Bike max where do you get the vittoria sealant stuff
BikeMax Posted September 21, 2006 Posted September 21, 2006 Bike max where do you get the vittoria sealant stuff It's called " Pit Stop" and at present I have had to order from the UK - Parker International but my LBS seem to have something similar. It is really impressive and has worked very well for me.
BikeMax Posted September 21, 2006 Posted September 21, 2006 Talking about rolling resistance' date=' apparently the Zipp guys have got tons of test data. Vittoria Evox (I think) requires a massive 4 watts less that Continental Competitions. Doesn't sound like much - but 4 watts when you are on your limit is significant. Coupled with ceramic bearings (another 3-4 watts) and the differences become substantial.[/quote'] And for those of you on tubsTubularTire ModelCrr at 8.5 or 7 bar * (~123 or ~101 psi)Crr at 7.5 or 6 bar *(~108 or ~87 psi)Rolling Performanceat 8.5 or 7 bar *Rolling Performanceat 7.5 or 6 bar *Listed WidthActual WidthHeightWeightCarcassInner TubeMax. PressurePuncture ResistanceRoundness VeloflexCarbon0.00490.005034.05 Watt34.74 Watt22 mm21.9 mm20.8 mm268 gCottonPolyesterLatex8-9 bar116-131 psiLowVery GoodGommitaliaRoute du Nord *0.00500.005334.74 Watt36.83 Watt24 mm *23.7 mm22.2 mm285 gCottonPolyesterLatex7-8 bar101-116 psiLowOkayGommitaliaPlatinum0.00530.005636.83 Watt38.91 Watt21.5 mm21.5 mm20.7 mm266 gCottonPolyesterLatex8-9 bar116-131 psiOkayOkayVittoriaCorsa Evo CX0.00540.005537.52 Watt38.22 Watt21 mm21.1 mm19.6 mm271 gCottonPolyesterLatex8-14 bar116-203 psiOkayOkayVittoriaCorsa Evo KS0.00570.005939.61 Watt41.00 Watt21 mm21.2 mm20.0 mm274 gCottonPolyesterLatex8-14 bar116-203 psiLowOkayContinentalCompetition0.00590.006141.00 Watt42.39 Watt22 mm21.8 mm20.8 mm265 gPolyamideButyl12 bar174 psiVery GoodGoodVeloflexRoubaix *0.00590.006141.00 Watt42.39 Watt24 mm *23.9 mm21.9 mm283 gCottonPolyesterLatex6-7 bar87-101 psiLowVery GoodContinentalPodium0.00600.006241.69 Watt43.08 Watt19 mm19.5 mm18.5 mm228 gPolyamideButyl12 bar174 psiVery GoodGoodSchwalbeStelvio Tubular0.00690.007247.95 Watt50.03 Watt22 mm21.7 mm20.3 mm234 gPolyamideButyl fusedto carcass14 bar203 psiLowVery GoodTufoElite Jet0.00730.007650.73 Watt52.81 Watt20 mm20.3 mm19.2 mm162 gPolyamideButyl fusedto carcass10-15 bar145-218 psiOkayVery GoodSchwalbeMontello 3000.00750.008352.12 Watt57.67 Watt22 mm21.7 mm20.5 mm305 gCottonPolyesterButyl7 bar101 psiLowOkayTufoHi-Comp Carbon0.00770.008053.51 Watt55.59 Watt22 mm23 mm21.1 mm248 gPolyamideButyl fusedto carcass8-12 bar116-174 psiLowVery Good
Dr. Seuss Posted September 21, 2006 Author Posted September 21, 2006 mmmm - cherry's AM Classics are looking more & more attractive
BikeMax Posted September 21, 2006 Posted September 21, 2006 mmmm - cherry's AM Classics are looking more & more attractive Those are very nice wheels - Zipp 303 rims if I recall correctly, but on AC hubs.
Sir Fed Posted September 22, 2006 Posted September 22, 2006 I have ridden Vittoria Corsa CX's for over 20 years, first exclusively and more recently only for racing. These are probably the most commonly used tub in the peleton with most riders just scrubbing the name off the sidewall in order not to upset the team sponsors. A friend has offered me a well matured set of Conti Podiums and looking at BikeMax's table I think I may take him up on the offer. They seem to compare favourably to the CX's
Cruxpearl Posted September 22, 2006 Posted September 22, 2006 BikeMax, American Classics make their own rims, the rims are much more angular than the Zipp's
bruce Posted September 22, 2006 Posted September 22, 2006 Bruce ' date='where did you get that info on the Vittoria's ?I went to there website and they have a whole range of evo tubbies , I ride on cont comp at the moment but if the difference is that big with vittoria's then I would like to try them.Just want to make sure I buy the right one's![/quote'] I race with Marco Swart - Cycletech - who is the Zipp agent in SA. Contact him on (011) 466 9974.
WorcesterWheelers Posted September 22, 2006 Posted September 22, 2006 Talking about rolling resistance' date=' apparently the Zipp guys have got tons of test data. Vittoria Evox (I think) requires a massive 4 watts less that Continental Competitions. Doesn't sound like much - but 4 watts when you are on your limit is significant. Coupled with ceramic bearings (another 3-4 watts) and the differences become substantial.[/quote'] Looking at Bikemax's table, where do I order a set of Veloflex carbon's?
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