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Old 13 October 2008, 17:38   #11
Country: Other
Town: Labutes City
Make: bombard
Length: 3m +
Engine: Yamaha 25
Join Date: Aug 2008
Posts: 15
Nice pictures.
You will have to rejet and adjust the carb setting to run the engine at that altitude, and probaly retard ignition timing!
Look around this site, It has some good reading about 2 Str engines and tuning.
Have a look aroung google for High Alltitude Snowmobiles/Sleds.

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Old 14 October 2008, 10:56   #12
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Country: Other
Town: Lima-Peru
Boat name: Nautile
Make: Sea Rider Boats
Length: 4m +
Engine: Tohatsu 18 /30 HP
Join Date: Sep 2007
Posts: 1,706
Originally Posted by codprawn View Post
You do need to be very careful at that sort of altitude. I have done quite a bit of mountain climbing and the altitude really saps your strength. Make sure you take some time to get used to it. Driving up to that altitude can be too fast - sometimes better to walk!!!

Get hold of some Acetazolamide or Diamox.

If you get ill get down quick - instant relief.

Good luck with the trip and take loads of pictures!!!
If you travell that high, won't find paved roads, just rural roads, cannot drive faster than 30/40 Km/hour so will have a very slow acclimatization from sea level going up, it's recommended to wear a cotton/wool head cover, this will reduce soroche effects. Last time was there did't have my head covered, was cold out there, stepped out the van walked a bit to take some nice pics and in 10 seconds ended kneeling on the floor almost fainted, luckily a nice oxygen cylinder was available at hand, some puffs latter was once on my feet again.

There is a local pill to Peru/Bolivia called Sorochpills, will relief headache and pressure problems on head, take one each 5/6 hours and chew lemon candies all the way up untill well acclimatized. Inflating a sib that high without an electric inflator is another story......

Happy Boating

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