REV 03/2017 Zero / Zero Uno
Dedacciai was established in 1992 with the aim of manufacturing state of the art steel tubing for bicycle frames. Zero / Zero Uno 2
Today s result of a more than quarter century of development and sport success is summarized in the current catalogue of high performance steel tubing. Dedacciai frame tubing are available in two classes: ZERO class tubing, state of the art light tubing, for racing and high performances frames, ZERO UNO class tubing, designed and engineered for commuter and long range users. All our steel tubing are seamless, manufactured in our plant in Italy, using en-105-1 25CrMo4 steel made in europe. To obtain the best results from the use of this class of products, please look carefully at the drawings, and read the advices at the end of this catalogue. 3
Zero class top tubing Ø28.6 Ø28.6 5 0.45 5 85 415 40 600 cod : MTO286A3 HTS 196 g 0.45 120 20 400 20 40 600 cod : MTO317A502 HTS 2 g - Cyclocross - MTB 34.5 29.4 29.4 120 20 400 20 40 600 0.45 34.5 cod : MTO317A50240 HTS 2 g - Cyclocross - MTB 36.0 27.0 0.45 120 20 400 20 40 cod : MTO317A502 HTS 2 g - Cyclocross - MTB 600 Ø35 4 0.45 40 Ø35 cod : MTO350K601 HTS 256 g 600 37 31 0.45 4 40 600 31 37 cod : MTO350K60111 HTS 256 g Zero / Zero Uno 4
Zero class down tubing 0.45 cod : MTQ317A503 100 450 40 HTS 268 g 650 Ø35 5 0.45 5 Ø35 cod : MTQ350A702 60 490 40 HTS 285 g 650 5 0.45 5 Ø35 cod : MTQ350A705 27.5 41.5 60 490 40 HTS 285 g 650 cod : MTQ350A70242 39 31 HTS 285 g Ø38 cod : MTQ3A1 HTS 373 g - Cyclocross - MTB 670 5 0.45 5 40 60 490 40 650 Ø38 40 390 cod : MTQ3A141 32 45 40 390 32 43.5 HTS 373 g - Cyclocross - MTB 670 Ø38 cod : MTQ3A5 33.0 43.0 40 390 HTS 373 g - Cyclocross - MTB 670 5
Zero class down tubing Ø44 Ø44 cod : MTQ440K902 340 HTS 390 g - Cyclocross - MTB 660 36.5 52.5 340 38.5 49.5 cod : MTQ440K901 HTS 390 g - Cyclocross - MTB 660 Zero / Zero Uno 6
Zero class seat tubing Ø28.6 Ø28.6 cod : MTV286A4 Ø27.4 60 150 HTS 297 g 620 non tagliare Aluminium sleeve to be glued cod : MTV317B3 Ø27.3 620 60 150 non tagliare 346 g Aluminium sleeve to be glued Ø35 5 Ø35 cod : MTV350A601 Ø35 100 620 50 50 non tagliare 365 g 7
15 Zero class chain stay 4 5 18 25.5 cod : MPO222A3 HTS 126 g 4 5 13 29.2 cod : MPO222A102 HTS 126 g 425 19.5 24.0 5 19.0 24.9 24.9 19.0 cod : MPO222A101 HTS 126 g 0.9 95.0 420 25.8.2 40.0 120 0.9.2 26.7 cod : MPO222B104 187 g Disc Brake.2 25.8.2 26.7 13.8 13.8 0.9 28.7 115 40 40.0 28.7 120 0.9 18.0 26.0 cod : MPO222B106 187 g MTB 350 440 cod : MPO240A203 HTS 154 g 40 410 Zero / Zero Uno 8
19.5 Zero class seat stay Ø1 Ø1 0 0.0 550.0 500.0 140.0 Ø1 Ø cod : MPV0B201 104 g cod : MPV0B202 93 g Ø1 0.0 550.0 140.0 Ø1 cod : MPV0B203 102 g 0.0 Ø cod : MPV0B205 105 g 560.0 250 560.0 Ø18 cod : MPV1A501 1 g 240 110 Ø14 cod : MPV1A502 110 g 560.0 18.0 12.5 550 17 cod : MPV1A505 1 g 9
Zero class seat stay Ø12 50.0 50.0 Ø12 Ø14 23 23 14 14 cod : MPV1A508 172 g 50.0 50.0 250.0 5.0 100.0 Ø12 23 Ø12 50.0 50.0 360 14 Ø14 20 14 23 cod : MPV1A507 172 g - MTB bend center Ø12.0 155 R.0 265.0 23 14 23 14 cod : MPV1A506 172 g - MTB Ø14 Ø12 bend center 265.0 bend center 90.0 220 5 14.5 24.5 cod : MPV200A701 145 g 550.0 Zero / Zero Uno 10
Zero Uno class top tubing Ø25.4 60 320 60 Ø25.4 cod : MTO254C102 242 g 600 Ø28.6 5 100 0.45 5 400 40 Ø28.6 cod : MTO286B1 247 g 600 60 320 60 cod : MTO317C501 338 g - Cyclocross - MTB 600 34.5 34.5 29.4 60 320 60 29.4 600 cod : MTO317C50140 338 g - Cyclocross - MTB Ø35 70 60 340 60 70 Ø35 cod : MTO350B703 365 g Cyclocross - MTB 600 11
Zero Uno class down tubing Ø28.6 Ø28.6 cod : MTQ286B1 90 60 3 60 60 290 g 650 90 60 3 60 60 650 cod : MTQ317B501 340 g Ø35 Ø35 cod : MTQ350B703 110 60.0 340 60 402 g - Cyclocross - MTB 650 Ø38 0.9 Ø38 cod : MTQ3B2 1 390 40 60 418 g - Cyclocross - MTB 6 Ø38 0.9 Ø38 cod : MTQ3B3 170 390 40 60 462 g MTB 29" 740 Zero / Zero Uno 12
Zero Uno class seat tubing Ø28.6 Ø28.6 cod : MTV286B1 Ø27.4 60 150 312 g 650 non tagliare Ø29.6 Ø27.4 1.1 100 25 285 220 Ø28.6 cod : MTV286B310 333 g - Cyclocross - MTB non tagliare 6 Ø29.6 Ø29.6 Ø27.4 Ø27.4 1.2 1.2 25 145 20 1 28.6 250 25 145 20 1 620 28.6 cod : MTV286B311 393 g Low Geometry cod : MTV286C6 258 g - Cyclocross - MTB non tagliare 450 Aluminium sleeve to be glued Ø27.3 non tagliare Ø32.3 0.9 100 220 6 20 260 0.9 cod : MTV317B4 397 g Cyclocross - MTB 1.2 0.9 cod : MTV317B505 Ø29.3 70 35 240 35 240 384 g - Cyclocross - MTB non tagliare 620 Ø29.3 1.2 cod : MTV317B506 70 35 170 35 170 290 g - Cyclocross - MTB non tagliare 4 13
5 Zero Uno class chain stay.6 0.9 26 0.9 115 40 40 120.6 26 cod : MPO222B101 187 g Disc Brake 440.0 17 26 60 17 0.9 26 140 Ø22.2 cod : MPO222B102 150 g 420 50 cod : MPO240B201 170 g 410 100 1.0 1 cod : MPO240C202 212 g 450 1.0 100 1 cod : MPO240C2024 212 g Cyclocross 1 335 R220 12 R220 Zero / Zero Uno 14
6 Zero Uno class chain stay 1.0 100 1 cod : MPO240C2022 212 g Gravel - MTB 29" 1 360 R220 24 R220 1.0 100 1 cod : MPO240C2023 212 g Fat Bike 360 R220 27 15
8 8 Zero Uno class seat stay 0.0 Ø cod : MPV0B210 144 g 560.0 205.0 335.0 R150 12 Ø cod : MPV0B207 144 g Cyclocross R2 cod : MPV0B208 220.0 370.0 R150 21 Ø 144 g Gravel - MTB 29" R220 Ø1 0 1 Ø cod : MPV0D201 202 g 550.0 Ø1 1 370 R150.0 35 cod : MPV0D202 Ø 202 g Fat Bike Ø19 cod : MPV190B604 152 g 560.0 Zero / Zero Uno
8 8 Zero Uno class seat stay Ø19 cod : MPV190B601 9 g 560.0 205.0 335.0 R150 12 Ø19 cod : MPV190B602 9 g Cyclocross R2 cod : MPV190B6022 220.0 370.0 R150 21 Ø19.0 9 g Gravel - MTB 29" R220 17
Zero Uno class head tubing 1 cod : MTS31710200Z Lenght 200 150 g L cod : MTS31710650Z Lenght 650 489 g Ø32.5 1.3 Ø32.5 cod : MTS32513200Z Lenght 200 198 g - Off L cod : MTS32513650Z Lenght 650 646 g - Off Ø36.5 1.3 Ø36.5 cod : MTS36513200Z Lenght 200 224 g - Off L cod : MTS36513650Z Lenght 650 729 g - Off Ø45 Ø42 1 45 Ø38 1 L 14.5 Ø42 Ø45 cups code : MCL000B101 weight 46 g cod : MTS310200Z Lenght 200 181 g cod : MTS310650Z Lenght 650 588 g - Off - Off Ø46 1 Ø46 cod : MTS46010200Z Lenght 200 245 g - Off L cod : MTS46010650Z Lenght 650 245 g - Off Alloy cup remove anodization before gluing Ø45 Ø42 Ø37 6 45 3 5.5 Ø45 1 L Ø56 60 20 Alloy cup remove anodization before gluing 45 2 Ø47 7.3 9.8 Ø52 Ø56 cod : MTS56250 (cups included) Lenght 260 360 g - Off cod : MTS56250WOC (cups not included) Lenght 260 328 g - Off Zero / Zero Uno 18
Zero Uno class steerer and blades Ø25.4 THREAT Ø22.3 1.55 60 L 2.3 35 45 Ø25.4 non tagliare cod : MCN2541B Lenght 1 200 g cod : MCN254200B Lenght 200 cod : MCN254220B 225 g Lenght 220 248 g cod : MCN254240B Lenght 240 277 g cod : MCN254260B Lenght 260 299 g cod : MCN2542B Lenght 2 312 g cod : MCN2540B Lenght 0 325 g cod : MCN254319B Lenght 320 360 g Ø25.4 Ø22.3 1.55 2.3 35 45 Ø25.4 cod : MCN254320B (Threatless) 360 g 320 non tagliare Ø24 1 120 40 cod : MFT240B105 208 g - Track 410 27.8 19.4 1 120 40 cod : MFT240B103 208 g Ø25.4 410 55 1.2 40 5 235 Ø14 cod : MFU254B201 2 g R 19
20 Zero / Zero Uno
Chemical composition of EN-105-1 25CrMo4 steel % MIn/MAX C 0.22/0.29 Si <0.40 Mn 0/0 P <0.035 S <0.035 Cr 0.90/1.10 Mo 0.15/0.25 ni <0.01 Al <0.01 Typical Mechanical proprieties of steel tubing, related to delivery state: HTS (Heat treated, oil quenched and stress released) Tensile strength MIn. 1150 n/mm2 MAX. 1350 n/mm2 elongation AP5% MIn. 5% MAX. 8% (Drawn and stress released) Tensile strength MIn. 850 n/mm2 MAX. 1100 n/mm2 elongation AP5% MIn. 6 % MAX. 10 % (Annealed, cold worked and stress released) Tensile strength MIn. 450 n/mm2 MAX. 600 n/mm2 elongation AP5% MIn. 20 % MAX. 35 % Structural analysis data: Density Modulus of elasticity Yield strength 7.85 g/cm3 210 GPa 5 MPa 21
Assembling of the tubing Geometrical features All the Dedacciai tubes and tube sets are designed for assembling frames based on current UCI geometry. In the choice of tubing for manufacturing a frames, please keep into account the following safety rules: Verify that for the selected geometry you will save a butt length longer than the thermal affected zone, and in any case longer that the tube diameter. If the butt length of down and top tubing butts are not symmetrical, pay attention in the tube orientation : at the head tube joint the tube must be only mitred, and not cut. Depending on geometry, it is always better to keep top and down tubing spaced on head tube. over imposed tubing geometries are less safe. road recommended tubing can t be used for offroad frames. Fixing point and welding cordons closure points can give origin to fatigue cracks, realize them in the less stressed areas of the joints. It is recommended to completely weld the seat tube on bottom bracket, and then all other tubing. Top tube and seat stays must be approximately aligned at the seat tube joint. If you want to weld the seat stays below the top tube center line, please use the low geometry (LG) seat tube Zero / Zero Uno 22
Welding and post-welding advices Before welding the tubing, carefully clean them and remove dirty and grease inside and outside of the tube in the area to be jointed. The surfaces must be smooth and without notches.after mechanical cleaning, use acetone or MeK.Do not use chlorinated solvents. The suggested welding wire composition for TIG is C - 0.1% Si % Mn 1.0 % Cr 1.2 % Mo % (i.e. CASToTIG 6 / AWS A5 er70s-2 or similar) Welding wire diameter: from 1.0 to 2.0 mm. For brazing choose low melting temperature alloy, if possible below 5 C. Also the welding wire surface state is very important: stock it in clean areas, clean it before use and handle tubing and welding wire with gloves. Do not grind and/or polish the welding cordons. The risk of reducing the tube wall thickness is too high! Anticorrosion treatment is needed on the finished frame, cataphoresis is the most effective in long term protection As all the hi-resistance (> 1000 Mpa) steel, tubing in state HTS are sensitive to hydrogen embrittlement. Pay attention in avoid exposure to acid or hydrogen environments during frame fabrication. They can cause immediate and spontaneous breaks on tubing. In this case please contact our technical department. 23
Dedacciai Srl - Via Leonardo da Vinci, 19-26010 Campagnola Cremasca (CR) - Italy - Ph. +39 0373 74 499 - www.dedacciai.com