Tandem Big Bang D9 — Designer — Duratec

BIG BANG
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The most popular groupsets

Recommended groupset Price incl. tax Weight
fork Duratec Sh Deore 3x9sp DT Swiss Truvativ 65 412 Kč 15569g

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BIG BANG

D9

BIKE PRICE
from 65 412 Kč
with groupset
fork Duratec Sh Deore 3x9sp DT Swiss Truvativ

Color

Frame colour Logo colour Frame colour Colour - front part Colour - stripes Logo colour front Logo colour rear Base Frame Loading
  • Design

  • Mono Mono

    Frame colour

    • Arctic White
    • Attractive Green
    • Eclipse Black
    • Dark Blue
    • Light Blue
    • Fire Red
    • Classic Yellow
    • Orange
    • Light Pink

    Logo colour

    • CA171 White
    • CA172 Black
    • CA174 Titan Grey
  • Roadline Roadline

    Frame colour

    • Arctic White
    • Attractive Green
    • Eclipse Black
    • Dark Blue
    • Light Blue
    • Fire Red
    • Classic Yellow
    • Orange
    • Light Pink

    Colour - front part

    • Arctic White
    • Attractive Green
    • Eclipse Black
    • Dark Blue
    • Light Blue
    • Fire Red
    • Classic Yellow
    • Orange
    • Light Pink

    Colour - stripes

    • White
    • Black
    • Green
    • Red

    Logo colour front

    • CA171 White
    • CA172 Black
    • CA174 Titan Grey

    Logo colour rear

    • CA171 White
    • CA172 Black
    • CA174 Titan Grey
  • Logo on frame

    Choose your logo

Extra charge paintjob:
Inclusive

Extra charge logo: 0 Kč

  • Change background

    • Dark
    • Light
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Frame size

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VR
 
cm
VR
 
inch
VP
[1]
cm
VP
[2]
cm
A1
[1]/[2]
mm
A2
[1]/[2]
mm
B2
[1]/[2]
mm
C1
 
mm
C2
 
mm
D
[1]/[2]
mm
F
 
mm
G
 
mm
H
 
mm
K
 
mm
L
 
mm
O
[1]/[2]
mm
R
[1]/[2]
mm
S
[1]/[2]
mm
α
 
mm
β
[1]/[2]
mm
46/40 18,1/15,7 165-171 153-161 544/686 525/676 460/400 439 444 282/282 125 615 1741 50 70,9 712/661 382/565 566/442 70,5 74,0/74,5
48/42 18,9/16,5 172-176 162-166 552/712 553/702 480/420 439 444 282/282 135 623 1776 50 70,9 723/681 387/585 575/461 70,5 74,0/74,5
50/42 19,7/16,5 177-183 162-166 559/712 539/698 500/420 439 444 282/282 145 626 1779 50 67,6 749/690 391/580 586/481 71,0 74,0/74,5
50/46 19,7/18,1 177-183 167-171 559/725 539/717 500/460 439 444 282/282 145 626 1786 50 67,6 735/710 391/587 586/481 71,0 74,0/74,0
54/44 21,3/17,3 184-189 164-170 574/712 555/693 540/440 439 444 282/282 165 642 1789 50 67,6 796/718 400/563 605/519 71,0 74,0/74,0
54/48 21,3/18,9 184-189 172-176 574/739 555/727 540/480 439 444 282/282 165 642 1816 50 67,6 781/738 400/590 605/519 71,0 74,0/74,0
58/45 22,8/17,7 190-198 165-171 589/725 571/701 580/448 439 444 282/282 185 658 1818 50 67,6 846/740 410/565 624/558 71,0 74,0/74,0
58/50 22,8/19,7 190-198 177-181 589/739 572/723 580/500 439 444 282/282 185 658 1832 50 67,6 827/766 410/579 624/558 71,0 74,0/74,0
60/47 23,6/18,5 199-204 171-176 604/739 586/715 600/467 439 444 282/282 205 668 1843 50 64,4 866/758 419/574 645/577 71,5 74,0/74,0

 

Dimension

Summary

Thank you for your interest in a customised bicycle built by us.

You can now either SAVE AS PDF which you can print out for yourself or you can. START AGAIN if you feel that the configuration needs to be changed. EMAIL US to allow us to look over your configuration and we can advise by calling you direct. ADD TO BASKET will confirm your order with us and we will contact you by telephone to confirm. Payment is made at the time of order. Thank you

Price for complete bike 0 Kč

Weight 3400g

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BIG BANG D9

Tandem, or a bike which two cyclists ride and pedal together. There are more or less two kinds of people who ride tandems: those who have completely fallen under the spell of tandem pedalling and have become aficionados and fans, and those for who it is the only means of movement and active sport as a result of their disability.  In the second case a blind or otherwise disabled rider sits behind the front rider.  

Building a tandem requires a highly individual approach, especially in its geometry and design. It is necessary to combine two frame sizes so that the result suits both riders.Thanks to its custom production and mainly to its extensive experience of many years with tandems, Duratec, can fine tune and design the frame geometry and then manufacture the frame and naturally also assemble the complete tandem.  

Big Bang D9 is an adventure tandem intended for cycle tourism or expeditions for two. It is very often an aid for parents with a disabled child. And we most often seek out compromises in adventure tandems, because we often have to deal with differing bodies, including differences in dimensions. For example. Parent as front rider and at the back a smaller child. Or the front rider is a woman who has a taller blind husband. We have always been able to come up with a solution thanks to our own production, which permits technical alterations. In terms of design the frame is made of 7020T6 aluminium alloy and large diameter tubes with high rigidity, which is a decisive parameter influencing rideability and controllability. As standard the frame comes with a fitting for attaching a rear carrier, lights and mudguards. And these details are a practical aid on long journeys.

One of the favourite variants for the more demanding client is the use of a BELT TRANSMISSION instead of chain in combination with a rear multispeed Rohloff hub. We react to customer requirements, and you can find all the possibilities below in the details or on the configuration page. 

Standard equipment
one pair of rivets for bottle cage, two pairs of rivets for bottle cage for rear rider, replaceable hanger for derailleur, seat clamp diameter 31.8 mm, version for rear disc brake controlled by pilot - fixing Int'l Standard, fixing for mudguards and rear carrier, headset 1-1/8” ÷ 1-1/2" FSA ORBIT IS

Additional features
geometry for suspension front fork, adjustment of geometry of basic sizes according to riders' build, fitting of large diameter disk 203 mm; additional brake (V-brake) controlled by rear rider; 
Gates Carbon Drive™ System between 1st-2nd BB (belt), preparation of frame and rear hangers for fitting of multi-gear Rohloff 500/14 hub including second eccentric for tensioning belt for Rohloff hub; 

Mating dimensions
frame geometry for Duratec fork with height 420 mm, wheel diameter 28" (622), width of rear triangle 135 mm, maximum diameter of brake disk 180mm, fork steerer tapered  1-1/8÷1-1/2"", length of fork steerer 320 mm, bottom-pull front derailleur, diameter of seatpost 27.2 mm, front derailleur on clamp diameter 34.9 mm

Frame geometry
download a table with the frame geometry here

Big Bang D9

Front trekking tandem fork Duratec. Mount for disc brakes with preparation for the fender or the preparation for fender and rack. Forks has an aluminum body with aluminum pillar 1-1/8 "- 1-1/2".

Very difficult thing are the crancs for tandems. We very often use the cranks GEBHARDT. It is customized work. It means the customer can choose the lenght of cranks, right transmision and the other requests like colour. First transfer 1:1 is 36-36, second transfer 48-36-26. The axle ISIS or square. More information are on www.gebhardt.cz. Colour: black, red, silver

The parts used for construction and manufacturing of frames including rear dropouts of the frame, derailleur hangers, chain grip, in-line cable adjusters and others are made in CNC milling centre. The advantage of this kind of machining is reaching a high precision of machined parts. This technology guarantees a high quality of the surface of machined parts, very clean cutting and a very neat “high-tech” design. Rear derrailleur hanger is exchangeable. Rear left dropout is for Intl Standard. The second brake for stalker is available too as V-brake.

Big Bang D9 Big Bang D9

Geometry trekking bikes (tandems) is widely adapted driving style to which they are intended. The frames have a longer head tube. They are generally higher and more comfortable for ride. In this type of tandem encourage you to consider suspension forks, best lock from the handlebar.

Frame Big Bang D9 is normally produced by the rotor diameter 160 and 180 mm. If the weight of both riders higher recommended to increase the braking effect to ask for extra performance and fitted with a rotor diameter of 203 mm or add additional rear brake operated by the passenger (V-brake).