On Monday, September 23, 2013 2:39:28 PM UTC-8, JohnDeRosa wrote:
On Monday, September 23, 2013 12:56:34 PM UTC-5, Vaughn wrote: Fly one with with a pulse oximeter ($39.99 at Walmart) to verify that it works for you... Vaughn Actually only $35 at Walmart. http://www.walmart.com/ip/Choicemmed...r-1ct/17325061

Pulse oximeters are poor indicators of O2 saturation for glider pilots. Peripheral (as in fingers)vaso-constriction is common at the temperature and altitudes we fly. I used one for a few years and was over consuming Oxygen in an effort to keep the saturation above 95%. I use a EDS delivery system and consistantly got values of around 86% when above 6000 feet. I actually went to a Pulmonologist to see what, if anything, was wrong with my lungs and found that my lung capacity and ventilation were above normal. So I tossed out the oximeter and just trust the equipment to deliver the right amount of O2. So far so good.