jkotch 0 #1 March 23, 2005 Last month I went on my first tracking dive. When I checked my Protrack it posted a max. speed of 178 mph. Is this accurate? Could the Protrack register the forward speed or is this a miss reading due to a burrble or other interference? Quote Share this post Link to post Share on other sites
darkwing 4 #2 March 23, 2005 It won't measure the horizontal component of your speed. Only the vertical component alters the air pressure, which is what the unit measures, so that is what gets dealt with. -- Jeff My Skydiving History Quote Share this post Link to post Share on other sites
dragon2 0 #3 March 23, 2005 If you mount a pro-track or neptune on your head the readings are always off a bit because you move your head around. For more accurate readings mount it on your hip (but then the beeper won't do you much good anymore). Either that or you need some serious work on your tracking ciel bleu, Saskia Quote Share this post Link to post Share on other sites
migliore 0 #4 March 23, 2005 It seems extreme, but it might be that you are tracking *very* steeply. Have you ever had someone watch your body position during a track? If not, try de-arching. You will find that your track becomes much flatter. The benefit is that you can cover larger distance in the same amount time. This is especially good when breaking away from a group before deployment because you want to get as far away as possible is the few seconds you have. Hope this helps. Shane Quote Share this post Link to post Share on other sites
Feeblemind 1 #5 March 23, 2005 I fall like a stone (avg fall rate not docked of 126-130 mph) on my belly But in a track I am around 116-118mph and my protrack is in my helmet. Phil Fire Safety Tip: Don't fry bacon while naked Quote Share this post Link to post Share on other sites
pchapman 262 #6 May 23, 2005 My ProTrack's output (viewed on the computer with JumpTrack) always shows a big spike in speed during the tracking off from an RW jump. The spike typically goes up to 140 to 160 mph SAS. It does start at the altitude I remember as break off, and continues through the short track until the speed drops off quickly during canopy opening. The spike has also happened for a group tracking dive, after the point where we broke from the moderate speed tracking, to an agressive track before pulling. The spike is sure to be erroneous, as I don't drop away from the formation in some sort of bad, diving track. My ProTrack is mounted externally on a ProTec helmet. I don't know how an internal mount or other helmets might affect things. Quote Share this post Link to post Share on other sites
