Life in Tandem. Simmonsohn channels Danish and Scandinavian influences across all aspects of design. We value the importance of practicality and functionality. Our designs promote group activities with the belief that we are stronger together.

Modern technology has continuously improved component and frame designs, because of this tandems are no longer considered a novelty item. Their resurgence in popularity is due to the very nature that they can be as well-built as modern high-end bikes, with all the same technical specifications. They have the ability to perform to the same level as traditional, two wheeled bikes if the riders require. Whether shared mountain biking or casual leisure cycling is on the menu, the rustic Simmonsohn range has a model to suit everyone's aesthetic tastes and practical requirements.

Simmonsohn Karlstad Adventure Series Tandem

The Karlstad is the top level bike in the Simmonsohn adventure series. We think it's perfect for the couple who want to explore "in tandem" paths, tracks, roads and lanes. Running on slightly larger 700c wheels the Karlstad can cover more miles than the mountain series but can still handle some extra weight and some light rough. The Karlstad features Simmonsohn's tandem specific aluminium adventure series frame. The new frame design results in a low step over height for the stoker position. Up front is a responsive, lightweight Cromoly fork. The upgraded 24 speed transmission system comprises of Shimano EZ fire push button gear shifters with super precise Shimano derailleurs. The large range of gear ratios will help you cope with everything the terrain throws at you. Front and rear Tektro alloy V type brakes coupled with Simmonsohn double wall rims and Schwalbe Marathon tyres give excellent control on the road or tracks.

A combination of functional design and quality components.

Details
  • Model Type: Adult Aluminium Adventure Series Tandem.
  • Frame Construction: Oversize tandem specific aluminium tube set with one set of bottle cage bosses, 4 point rear pannier bosses, rear mudguard bosses and replaceable dropout.
  • Forks: Unicrown Cromoly fork with mudguard bosses.
  • Wheel Size: 700c
  • Gear System: Shimano 24 speed indexed gears with STI push button selection. Shimano Acera rear gear derailleur. Shimano Altus 31.8mm dual pull front derailleur. Shimano Altus ST-M310 EZ Fire gear shifters with push button selection. KMC chains.
  • Chainsets: Front Prowheel 42T single chainset with alloy cranks and chainring chainguard. Rear Prowheel 24T,34T,42T triple chainset with alloy 170mm cranks.
  • Freewheel/Cassette: Shimano CSHG30 8 cassette.
  • Bottom Bracket: Eccentric sealed cartridge bottom bracket for correct chain tension.
  • Pedals: 9/16" alloy platform with reflectors.
  • Wheel Specification: Simmonsohn black alloy double wall 48H CNC rims with front and rear KT quick release alloy hubs. Stainless steel black spokes with 13G brass nipples.
  • Tyres and Tubes: Front and rear 700 X 38c Schwalbe Marathon with Green Guard Puncture Protection. Presta valve tubes.
  • Brakes: Front and rear Tektro alloy V type brakes with Shimano ASTM310 levers.
  • Handlebar and Stem: Front Zoom 640mm wide oversize alloy handlebar. Rear Zoom 640mm wide alloy handlebar. Front Zoom adjustable angle alloy oversize 110mm stem. Rear Zoom tandem alloy adjustable reach stem.
  • Grips: Front and rear 120mm dual compound comfort.
  • Headset: FSA ahead type full bearing. 3 X alloy headset spacers.
  • Saddle and Seatpost: Front Selle Royale Look In Gents, rear Selle Royale Look In Ladies. Zoom 27.2 alloy micro adjust seat post (300mm front, 350mm rear).
  • Additional: Front bell. Reflectors. Rear pannier rack with straps. Front pannier racks. 700c black full mudguards.
  • Weight: 21.4kg.
  • Frame Sizes: 20"/18" and 18"/15".
  • Frame Colour: White.
  • Fork Colour: Black.
  • Cycle Condition: Brand new sealed in box. This bike comes 90% built. Fitting of pedals, handlebars/stem, front wheel and saddles/seatpost required. Chain tension, gears and brakes will also require some adjustment prior to riding.