rehar
rehar
Some of my favorite books on Chassis:
And a really interesting article from Bikers Station 2014/10 No. 325. A Japanese Magazine / article regarding the relationship between the engine placement and chassis. In Summary, this article focuses on the CG of the ENGINE VS the complete bike CG and all of that in relationship to the virtual roll center.
Skipping a lot of detail there - the following numbers are my interpretation from the above article's photos - so the dimensions may not be precise, but - an interesting reference. I've added Rake/Trail/Seat height and my own bike dimensions at the bottom:
So, how do you figure out where the CG is on an engine? You hang it in two different directions of course!
And back to the dimensions:
Long story short - mass centralization and keeping it close to the virtual roll center have a major affect on handling. CG/Weight bias forward/rearward, up/down...
Anyway, balancing these points, engine rotation, anti squat, and the fact this engine is NOT a modern representation by any means... the engine location has been decided.
Motorcycle Chassis Design: the theory and practice (Tony Foale and Vic Willoughby)
Motorcycle Handling and Chassis Design, the art and science (Tony Foale)
The Racing Motorcycle, A technical guide for constructors (John Bradley)
The Racing Motorcycle, A technical guide for constructors - Volume 2 (John Bradley)
Post War Independent Motorcycle Frame makers (Keith Noakes)
Motorcycle Handling and Chassis Design, the art and science (Tony Foale)
The Racing Motorcycle, A technical guide for constructors (John Bradley)
The Racing Motorcycle, A technical guide for constructors - Volume 2 (John Bradley)
Post War Independent Motorcycle Frame makers (Keith Noakes)
And a really interesting article from Bikers Station 2014/10 No. 325. A Japanese Magazine / article regarding the relationship between the engine placement and chassis. In Summary, this article focuses on the CG of the ENGINE VS the complete bike CG and all of that in relationship to the virtual roll center.
Skipping a lot of detail there - the following numbers are my interpretation from the above article's photos - so the dimensions may not be precise, but - an interesting reference. I've added Rake/Trail/Seat height and my own bike dimensions at the bottom:
So, how do you figure out where the CG is on an engine? You hang it in two different directions of course!
And back to the dimensions:
Long story short - mass centralization and keeping it close to the virtual roll center have a major affect on handling. CG/Weight bias forward/rearward, up/down...
Anyway, balancing these points, engine rotation, anti squat, and the fact this engine is NOT a modern representation by any means... the engine location has been decided.