Via: rc bike
"The Pumilio Tiempo RMC is designed and manufactured in Finland. It's a rather exotic 1/6 scale shaft driven machine that uses hub center steering and is designed to be powered by a 3.5cc nitro engine. The Pumilio Tiempo’s frame is fabricated from laser cut and polished stainless steel and the swinging arm and gearbox housings are made from CNC machined billet aluminum. The bike looks and feels like it could have escaped right out of a BMW design studio!
The Pumilio Tiempo's designer Reijo Mattila created a hub center steering that features two radial bearings. The whole idea behind this system is to permit the PT to lean into corners like a full sized bike. The PT makes use of 1/8 scale buggy wheels and tires, while this may sound somewhat strange at first, this wheel and tire combo permits the PT to handle surfaces that many other RC bikes cannot. To use the lightweight buggy wheels in bike service, Pumilio Design needed to get some additional mass into the front wheel for the required gyroscopic effect. Pumilio’s answer to this was to wrap and glue a strip of lead around the inside circumference of the front wheel before fitting the foam insert and tire, a clever engineering solution.
Pumilio Design forewent the usual chain drive method of getting power to the rear wheel and opted instead for a shaft drive system not unlike those found on full sized exotics such as BMW. The PT’s universal jointed drive shaft is securely located inside the CNC machined aluminum swinging arm which pivots on smooth acting bronze bushes. The CNC machined aluminum gearbox is a fully ball-raced dual reduction twin shaft design, incorporating hardened gears to ensure durability and trouble free operation."
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