Well it is new for him. I kind a like it. I think it is cool in a 90's sort of way. Anyways i think it will suit him fine, as he isn't exactly young anymore.
If it had some green it would be perfect for a mexican. I thought since you had a caterham, your dad would have like a TR3 or something.
A swingarm must hold the rear-wheel, but lever from the frame so there is movement for the suspension to act upon. In this case, incorporated into the swingarm is the drive-shaft, which is a less efficient but lower-maintenance method of power transfer for a motorcycle than a chain and sprocket. This drive-shaft not only is built into part of the structure of the motorcycle [the swingarm], it must also be large and strong enough to incorporate the necessary linkages to allow movement in the travel of the suspension, despite being a drive-shaft that would normally be rigid for absolute strength. A rear-brake disc and caliper is also built into the assembly shown in the pic.
you say "Anyways i think it will suit him fine, as he isn't exactly young anymore." in a way to make it sound like the K100 isn't fast nearly 20 years old it may be, but it's still pretty rapid
I correct some of my statement. I did not want to imply bad reliability, just that it was sort of a tech-fest when it was released, it might have the usual older bike ageing symptoms. I remember it from when it was at some Motorcycle show, maybe Paris, before launch, it was a big thing back then.
Didn't mean that, it should be plenty fast. Its just that one of his mates has just bought an Aprilia Mille R, and is going to kill himself.