Ok, here my 2c:
The maximum ambient temperature I have ridden it is 20°C however, keep this in mind.
First of all, I don't experience a heat issue from the exhaust itself and am asking myself a bit what others are talking about. The passenger seat doesn't get warm at all and the plastic in the compartment below the passenger seat gets hand-warm at best.
As for the rider, I did in fact notice considerably more heat from the frame/motor than with the 02 R1, specially in the knee area. But this is from engine/frame and not from the exhaust. I didn't notice any significant seat heating as well. This may be due to the relative low temperatures and may change in summer, but by no means it is or will be a problem! If there is seat heating, it again is rather caused by metal parts of the frame under it than by the exhaust.
I was in town for the last two days, lots of stop and go, with the motor at max temperature and the fan on. I didn't notice considerable radiation from the cat (and I checked for that with the bare hand). If the bike is idling, the cat is rather cold anyway. This may be different if you stop from some fast riding and stay on the bike for a moment.
On the right side of the bike, there is a radiation shield to protect the rider from heat radiation. This shield is made from thermoplastic and gets hand-warm. Also the rear shock that is quite close to the cat doesn't get really hot.
Like with any bike, if it is 30°C+, you should be rolling or it is getting hot! Remember, there is a 70kg block between your legs that is at 100°C!
If you are rolling, the only heat you will feel is the frame, where your legs touch it. With thin pants this may get uncomfortable and additional shielding (carbon covers) may be helpfull.
You don't feel anything of the cat or exhaust however. This is specially true in riding position, your legs are just out of the way of any radiation!
By the way, the inside of the legs on my leathers is black, I should feel if there was radiation heat!
I am currently trying to get an infrared cam to do some heat map pictures of the bike and end all speculations.
I would be astonished to see Yamaha put a heat shield only on one side if there was a real problem. Remember, this is a tiny kat!
Should I experience heat problems caused by the exhaust in summer, I'll just shield the cat some more and add a little fan to blow its heat away, but I currently doub't I'll have to do anything at all there.
The maximum ambient temperature I have ridden it is 20°C however, keep this in mind.
First of all, I don't experience a heat issue from the exhaust itself and am asking myself a bit what others are talking about. The passenger seat doesn't get warm at all and the plastic in the compartment below the passenger seat gets hand-warm at best.
As for the rider, I did in fact notice considerably more heat from the frame/motor than with the 02 R1, specially in the knee area. But this is from engine/frame and not from the exhaust. I didn't notice any significant seat heating as well. This may be due to the relative low temperatures and may change in summer, but by no means it is or will be a problem! If there is seat heating, it again is rather caused by metal parts of the frame under it than by the exhaust.
I was in town for the last two days, lots of stop and go, with the motor at max temperature and the fan on. I didn't notice considerable radiation from the cat (and I checked for that with the bare hand). If the bike is idling, the cat is rather cold anyway. This may be different if you stop from some fast riding and stay on the bike for a moment.
On the right side of the bike, there is a radiation shield to protect the rider from heat radiation. This shield is made from thermoplastic and gets hand-warm. Also the rear shock that is quite close to the cat doesn't get really hot.
Like with any bike, if it is 30°C+, you should be rolling or it is getting hot! Remember, there is a 70kg block between your legs that is at 100°C!
If you are rolling, the only heat you will feel is the frame, where your legs touch it. With thin pants this may get uncomfortable and additional shielding (carbon covers) may be helpfull.
You don't feel anything of the cat or exhaust however. This is specially true in riding position, your legs are just out of the way of any radiation!
By the way, the inside of the legs on my leathers is black, I should feel if there was radiation heat!
I am currently trying to get an infrared cam to do some heat map pictures of the bike and end all speculations.
I would be astonished to see Yamaha put a heat shield only on one side if there was a real problem. Remember, this is a tiny kat!
Should I experience heat problems caused by the exhaust in summer, I'll just shield the cat some more and add a little fan to blow its heat away, but I currently doub't I'll have to do anything at all there.
