The promise of a production turbo diesel motorcycle has been long anticipated since we first saw photos and drawings of the prototypes and now Neander Motors is announcing the introduction of their first Neander Turbo Diesel motorcycle. The very first production unit will be on display at the international motorcycle show “Mondial du Deux-Roue” in Paris from September 28th to October 7th.
There have been several one off turbo diesel motorcycles built around the world, some, like the Thunder Star, with the intention of becoming production bikes, but Neander Motors has put it all together and they've done it with an unconventional twin crankshaft diesel engine designed to dramatically lower vibration.
The engine displaces 1340 cc with an output of 112 hp at 4200 rpm and 144 ft. lb of torque at 2600 rpm. Acceleration is 0-60 in 4.5 seconds with a top speed of approximately 140 mph. The engine is an air and oil cooled vertical twin cylinder with 4 valves per cylinder, 2 overhead cams and common rail injection. It is turbocharged with an intercooler. The transmission is a 6 speed with belt final drive.
The most unique feature of the engine are the twin counter rotating crankshafts with 2 connecting rods per piston, which, according to Neander, virtually eliminates the vibration you would expect, not only because it's a diesel but also from the vertical twin configuration. The pistons both move up and down in unison. Technically, it's extremely interesting and seems like it should do the job. We'll have to wait for an independent road test to verify how well it actually works.
The motorcycle itself has a 75 inch wheelbase and is 98 inches in overall length. Rake is a leisurely 56 degrees. Seat height is only 26 inches making it easy to comfortably plant your feet and weight is 650 pounds. Range with 3.7 gallons of diesel fuel is approximately 186 miles which yields about 50 mpg, perhaps a bit less than you would expect until you consider the power and weight of the motorcycle and considering the engine is of their own design.
The other unique design feature are the twin 41 mm front fork tubes, that is, 2 tubes on each side. I'm not sure whether they all perform the same function or if suspension duties are somehow divided between the pairs but, in any case, it gives the Neander a very unique look.
The price for all of this engineering is 95,000 Euro which at today's exchange rate is $133,000, certainly not cheap but far more conventional customs reach that price range and owning a Neander places you in a very limited group of riders.
The engine itself is a very neat piece and I have to wonder if there aren't a few other applications for the twin crank design. Will this be the first of many turbo diesel motorcycles to begin production with other companies joining in or one of only a few? Time will tell but congratulations to Neander Motors for carrying through on their promise of getting their big rig on the road and into production. Nice job!
Link: Neander Motors