| Author | Message | ||
     Johnboy777 |
Found this on the internet, and thought is was interesting: Rotax Motorcycle Engines The 1125cc Helicon engine developed for Buell is a lightweight, fast-revving, big-bore, short-stroke V-twin with a broad power curve peaking at 146 hp (109 kW) near the 10,500 rpm redline. The twin-cylinder, V990, is light and compact, sporting magnesium cylinder head and clutch covers and comes in various horsepower configurations depending on vehicle specific and manufacturer specific demands. The Type 122 & 123 engines were single cylinder 125cc engines as used in Aprilia AF1 / RS125 models. These were high revving, high power units using an exhaust valve system called Rave to increase peak power while retaining low end torque. Engine Type 1125 Helicon - Buell Motorcycle Company (1125R, 1125CR) Engine Type V990 - Can-Am Spyder, reverse trike 95 to 106 hp (71 to 79 kW), Aprilia (RSV 1000, Tuono) 139 hp (104 kW) Engine Type 804 - BMW Motorrad, F800 series 85 hp (63 kW) and New F650GS 71 hp (53 kW). Engine Type 654 Engine Type 122 - 22 kW (30 hp) (Successor to the 123 engine) Engine Type 122 - 11 kW (15 hp) (same as the Type 122 22 kW engine, though restricted by removal of RAVE Power valve). Engine Type 123 - 33 hp (25 kW) . | ||
| Court |
Looks like the Rotax listing of motorcycle engines. There used to be a site that had photos and specs for all the various engines and the applications that they got used in. | ||
| Towpro |
Here is a better view of the tech that goes into a Rotex 804 motor. Pretty interesting. http://web.me.com/beamerbikes/Site/F800GS_engine.h tml | ||
| Court |
That amazing. | ||
| Sparky |
Re 804, Pretty neat. Seeing cracked bearing caps and magnesium cases brings fond memories of the machine shop and assembly lines at McCulloch's chain saw engine plant I worked at in the '60s. | ||
| Johnboy777 |
Here's a really cool vid of the Rotax 1125 |
