Altitude: 16.000 feet pass with a 1982 R100

Why wouldn't I still through in that tidbit of info? Some might not realize how the atmosphere stacks up. Rub some ointment on that ass for me and lets talk some more about riding at extreme altitudes!

Nice....

Hypoxia, baby! Try it at 25,000. I'm "certified" by NASA up to 25,000! (Whatever that means.) They put us in a room and sucked "all" the air out. One guy in the group before me started tap dancing, but after it was over had no recollection of it!

Cerebral oedema is deadly. Pays to be prepared.

Yikes. Sounds like a safe spot to try it, anyway.

Put my pack down to take a break at the top of the pass 18.5k (Thorung La for those who've been). Continuing on I'd covered three or four hundred meters before realising I didn't have my pack on. Larkya La was a similar altitude, but I'd been at 12k - 14k for two weeks so it didn't seem to affect me as much.

Altitude and pressure are not linear.

Many-many years ago (196x) my brother and wife and I and my wife, were driving up the Nevado del Ruiz in Colombia. The road goes up to 4.800 meters, close to 16.000 ft. Driving a Mercedes 220 - not doing well, but made it.
Our actions at that altitude: My brother, a peaceful kind of guy, madly arguing with us. My sister in law, a expert photographer, reloaded a already exposed film into her Rolleiflex. My wife getting crying attacks. Me, trying to restart the car with a lot of throttle and clutch, repeatedly trying to start with the gear in neutral. If you have to make decisions, it's a dangerous place.
OTOH I crossed many times with my R90S the highest point of the Venezuelan Andes main road, Pico del Aguila, at 13.500 ft, without any problem.

When I took my r80 to 16000 ft in Peru, I fitted a smaller main jet and hotter plugs, I reset the idle at 8000 ft, bike ran ok but big loss of power due to reduction of O2. Body was ogish but v tired all on dirt roads. Snow at the top.

Object is to keep the mixture within reasonable operating parameters so it will start at altitude and to reduce fuel consumption.

Awesome.

10k feet is NATOPS limit for not having O2 FYI. Hypoxia is weird stuff.
Any good helicopter aircrewman has broken that and other rules just on principle though.

Ok , I will go !!!

Thank you for the explaination, easy, I will go

I did more or less the same hiking experience up to 14.500 feet a few year ago, not to much a problem.
I guess 16.000 feet just sitting on the bike will be OK as weel.

I will bring back and post some pictures on ADV forum.

Thank you all for your comments and advises.

I could experience this kind of headaches as well, Argentinian wine are strong !!

I see that we share the same taste !!