Technical specifications

Steel frame made in our own factory*

Dimensions when folded (all models): 175x60x20cm (with forks removed 140x60x20cm) optionally dismountable with S+S torque coupler; LS: with hinged joint
Wheelbase: 177,5cm
Rear sub-frame length: 40cm
Overall length: 227,5cm
Payload: 260kg
Step-through height: 62cm front / 53cm back
Top tube length: 56cm front / 78cm back 62cm front / 53cm back
Weight: 19,5kg
Rider height: from 140cm up to 210cm

*Standard dimensions with 50-mm width tyres, made-to-measure bikes deviate from these

Models of drive train

8-gear derailleur:
development 2.45-7.13m (48 tooth to 11-32), chain drive with freewheel

8-gear hub:
development 2.41-7.39m (42 tooth to 15), Shimano Nexus with back-pedal or freewheel (Premium hub); optional belt drive

3x8-gear Dual Drive:
development 1.57-8.48m (42 tooth to 11-32) Sram DualDrive, 8-gear combined 3-gear hub

14-gear hub:  
development 1.68-8.85m (48 tooth to 13), Rohloff SpeedHub; optional belt drive

The BERNDS-Folding Tandem is available with a variety of special equipment.

The BERNDS-Folding Tandem – an open two-seater with a high risk of addiction

Beware! We have discovered:
tandem riding is addictive!

Enlarge Folding bike
Please click on the picture to see an enlarged version

Tandem riders share the bike's weight and air resistance and so easily reach a brisk pace without a sweat. They can save their breath for a relaxed conversation during the ride. All in all: tandem riding really is part of quality of life.
The basic design for our folding tandem we have inherited from our folding bikes. We have mounted the robust, easy-running 20-inch wheels and the sprung, folding swingarm on a solid frame and adapted the whole geometry to the particular needs of tandem riding. Thus our folding tandem is especially simple and safe to ride; even at high speed you always have the feeling that everything is under control.
In comparison with conventional tandem, a BERNDS-Folding Tandem gives you a great number of advantages:

  • the BERNDS-Folding Tandem is compact and foldable.
    • In urban traffic, riding round tight corners is easy, thanks to the somewhat shortened wheelbase. Our tandems are so agile that you quickly get the hang of riding them.
    • On the trains belonging to the Federal Railway or on suburban trains they fit unfolded in practically all bike racks and compartments. For you this means: no stress when loading or unloading in a full bicycle compartment!
    • For transport by car, you can fold up your BERNDS-Folding Tandem with a few turns of the hand. It fits no bother inside the typical family saloon car. So you need no complicated roof or rear luggage rack. By the way: the extra fuel consumption caused by a roof or rear luggage rack is around 1 litre / 100 km. So on long trips you save money and spare the environment.
  • The BERNDS-Folding Tandem - everybody can ride along!
    • They are suitable without any special adaptation for riders of between 1.40 and 2.10 m tall – and are thus the ideal family tandem.
    • The rear handlebars and the front rider's saddle are independently adjustable.
    • On our tandems, too, the handlebars, stems and seatposts are standard sizes.
    • A great number of attachments for carrying luggage are available.
    • Our tandems are particularly suited to pulling trailers.
    • For our BERNDS-Folding Tandems we can install a particularly efficient electric drive; with it, you can ride in the mountains, with no sweat!
  • BERNDS-Folding Tandems – extra safe and extra light!
    • The unusually wide and stable tyres provide more contact with the road surface and ensure sufficient reserves of grip when braking, and efficient damping.
    • On all our tandem models we fit high-quality brakes; the hydraulic disc brakes which we particularly recommend ensure short braking distances even in the wet.
    • The maximum payload is 260kg! Perhaps you will never make full use of this payload but you will always notice the safety reserve you have in hand.
    • The BERNDS-Folding Tandem is extra light – from 18 kg upwards!

Basic model

Powder coating: 3 coats (primer, powder colour coating, clear lacquer), standard colour Diamond Black, other RAL colours at extra charge
Suspension: rear wheel elastomer suspension (3 degrees of hardness available)
Bearings: rear swingarm with self-lubricating, sintered brass bushing
Pedals: high-quality ball-bearing type with non-slip rubber surface (optional fold or push-fit pedals)
Brakes: V Brake (optional hydraulic wheel rim or disc brakes)
Felgen: 20" Schwalbe Big Apple 50 mm wide, 2-5 bar (others optional)
Spokes: aluminium U-profile, 24 mm 36-hole
Wheel rims: 36 Nirosta, 2 mm
Steerer race: 1 1/8 inch sealed (BERNDS special)
Stem: adjustable angle, 1 1/8 inch, different lengths optional
Handlebars: Moon (other handlebars optional)
Seatpost patented, aluminium 29.8 mm
Saddle: Terry Citta (other saddles optional)
Mudguards: plastic black or silver, 53 mm SKS Trekking with BERNDS special stainless steel staysEdelstahlstreben
Foot stands: Hebie 630 (mounting using BERNDS special boss)