» Yamaha have a new 998cc triple. Like the 847cc MT-09 engine it’s tuned for midrange with 41mm throttles, 11.3:1 compression, and revs to 10,500rpm. It’s derived from the 140bhp snowmobile and Waverunner motor, and is in a new four-wheel buggy – however, Yamaha use XT660-based motors in their leisure vehicles already, and this new application uses a bike-style sequential gearbox. Does this sharing of technology hint at a future large MT model?
Honda, meanwhile, have patented a new two-stroke. Yes, really. Three-stage injection sprays fuel to cool the piston and cylinder wall, and help fuel atomise. It’s fired into a scavenging port, with two other ports to clear waste gas and stop unburnt fuel finding the exhaust, which is managed by a valve in the head. A cunning new…
