ghte
Husqvarna
Pro Class
Dunno about that Motosportz. The motor may well be an evolved and updated version, but it has not shone in 2 years. This means that any major surgery performed by Husky has probably already maxed out developmental opportunities. This means a motor that will be with us for 3-5 years with little scope for development.
2 biggest issues are the crank mounted clutch-it has caused major wear problems in the past as it is smaller and spins a lot faster. This means it will get hotter, fade earlier and need replacing more often. The other issue I have read about is that whilst the swing arm/front sprocket arrangement has some real merrit from a traction perspective it has caused chain breakage. This has apparently occured whereby sticks are grabbed and taken onto the front or rear sprocket. With no slack to accommodate the stick the chains can break. I lament the fact that husky built a nice new 250 motor for 2010 and the new 450/510 should be a derivison of that style rather than a 2-3m year old motor made in Asia.
2 biggest issues are the crank mounted clutch-it has caused major wear problems in the past as it is smaller and spins a lot faster. This means it will get hotter, fade earlier and need replacing more often. The other issue I have read about is that whilst the swing arm/front sprocket arrangement has some real merrit from a traction perspective it has caused chain breakage. This has apparently occured whereby sticks are grabbed and taken onto the front or rear sprocket. With no slack to accommodate the stick the chains can break. I lament the fact that husky built a nice new 250 motor for 2010 and the new 450/510 should be a derivison of that style rather than a 2-3m year old motor made in Asia.