“Wow, that’s not so stupid! It’s a great idea, to increase and combine effort, or when the two riders do not have the same level of fitness, with children, with a trailer, to go further, to bomb uphill (because everyone knows that a tandem… it bombs along especially on the flat).”
1st challenge: the motor…
Put it at the front, easy… but it’s impossible to synchronize the cranks due to the motor freewheel… so, forget that if you want to maintain a decent ride. Therefore we decided to put it at the rear… but we had to innovate! So we created a unique interface and special cranks to link the front and rear cranksets despite the motor being at the back.
2nd challenge: the stiffness!
Fortunately we already have our triple cavity tubes that have made our task easier!
3rd challenge: the range.
And for this we can thanks Bosch who have developed a «Y» «DualBattery» wire to safely connect 2 batteries in order to get an incredible capacity of 1000 Wh! The system intelligently manages power between the two batteries during charging and discharging, which increases their lifetime.
6061 T4 T6 alloy – Extruded variable thickness hydroformed tubes – Rear motor – Tapered head tube – 27.5 Plus – Boost
RockShox Yari RC 140mm – Motion Control – Solo Air – 27.5 Plus – 15mm Boost
BOSCH Performance CX 250W – 40/75 Nm – Assistance from 40 to 300% – 25 km/h – 1000 measurements/second – Powerful – Compact
- Battery pack
Dual battery packs BOSCH Li ION PowerPack 500 – 36v 13,8Ah – 500Wh – Full charge in 4.5, 50% in 2h – 2,5 kg – 60 % minimum residual capacity after 30,000 km – Total : 1000Wh
BOSCH Intuvia central with separate control unit – 5 modes (Eco, Tour, Sport, Turbo, Off) – Walk assist – Information available offline – USB port to recharge MP3 player, mobile phone, etc.
Shimano XT 11 speed, 14×11/46, super wide capicity, more range!
Shimano Rapidfire 11V
Moustache forged alloy cranks specific for Tandem, Front: 175 mm, Rear: 170mm, synchronized – 14T motor cog (=35) – Timing chainrings narrow/wide 36T
Magura MT5 hydraulic disc brakes, 4 pistons 200/200
Alloy CNC with industrial bearings – Boost – Front: 15×110 mm – Rear: 12x148mm
Exclusives Moustache 27.5″ – 35mm – Asymmetric – Double wall alloy – Welded – Compatible with tubeless (with flap) – 32 holesT
MAXXIS REKON 27.5×2.8 – Tubeless Ready – Dual density – Exo protection
Velo ergonomic saddle
Front: alloy 31,6×350 – Rear: Suntour NCX – Super comfortable alloy suspension parallelogram – 27,2 x 350 + 31,6/27,2 post shim converter
Front: Alloy 760 mm – Rize 25 mm – Stem 55 mm – Rear: Alloy 680 mm – Rize 25 mm – Adjustable stem 155/200.
Alloy, wide plateform
5 years frame and fork – 2 years motor, battery (or 500 cycles) and accessories
Front : 51 (1,72 to 1,95 m) approximately – Rear : 42 (1,50 to 1,85 m) approximately