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Proton

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I am Isaac Proton.

I am Isaac Proton. I am a purebred racer. I have everything you would expect a high-end racing bike to have. My ruggedness and reliability are based on the best possible combination of weight and stiffness. I challenge every experienced cyclist to get the most out of me. My technologically advanced carbon-based design allows you to take up the most extreme challenges with me. Regardless of whether we’re doing a daily training routine or taking part in a racing competition, we face the elements together as one.

My frame is made of three different tube profiles. The profiled oversized slanting and horizontal tubes leave the frame head with the same tube diameter. The strength of the frame is guaranteed by the slanting down tube, which retains its oversized oval diameter over its entire length. The profile of the top tube, between and the head tube and the seat tube, goes from a rounded rectangular shape to a flatter oval shape. A standard round seat tube completes and stabilises my triangle.

I'm able to neutralise any road vibration with the help of my tight rear design with relatively thin seat stays and slightly higher chain stays, ensuring that none of the driving force is lost. The use of tube profiles with unique carbon-based properties allows us to work together to lead the pack on any kind of terrain and to beat out the competition! With my slightly curved front fork, bends are not a problem but simply a challenge. I am Isaac Proton. I will steer you to your greatest successes!

Isaac Proton

General
Frame Sizes: 50, 52, 54, 56, 58, 60, 62
Weave: 3K Monocoque

Frame
Bracket: Pressfit (BB86,5/42mm)

Frame Technical Specifications
Headset: 1 1/8 - 1 1/2 Tapered
Seatpost: Isaac Carbon 31,6mm

Fork
Fork: Isaac 3K Monocoque

Bike Specifications
Group: Dura Ace 7900
Crankset: Dura Ace 7950 compact 34-50
Wheel set: FFWD F6R/DT 240 Isaac Branded
Tires: Schwalbe Ultremo ZX
Saddle: Selle Italia SLR XP
Handlebar tape: Lizard Skins DSP 2.5mm
Handlebar: Ritchey WCS Logic II
Stem: Ritchey WCS C-260

Weight sample bikes
7.260 size 56 black

  Dimension size 50 size 52 size 54 size 56 size 58 size 60
A seat tube total lenght 480 520 540 560 580 600,1
A2 seat tube joint 439,9 470,6 494,9 513,3 519,8 542,1
B top tube lenght 510 525,2 545,2 557,9 570 595
C seat tube angle 75° 74.5° 74° 74° 73.5° 73.5°
D head tube 124 144 160 176,5 189 214
E head tube angle 71° 72.5° 73° 73° 73.5° 73.5°
F BB drop 75 70 70 70 70 65
G BB to front wheel 604,2 577,8 588,9 601,8 603,2 603,2
H chain stay 406 406 406 406 406 406
I wheel base 972,5 973,5 984,6 997,6 1000 1027,3
J fork rare 43 43 43 43 43 43
K standover height 746,7 769,9 787,7 797,2 825 849,2
L standover height offset 122,9 132,5 142,4 147,9 158,3 164

 

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