carve 0 #1 October 11, 2007 can anyone explain why my VISO would be giving a different max speed in freefall compared to my friends ALTITRACK? for info both are wrist mounted and both on SAS (skydiver airspeed) i assume both have the same software but the difference can be as much as 25 MPH. Quote Share this post Link to post Share on other sites
2shay 0 #2 October 11, 2007 the lower could be taking the average and not the maxdon't try your bullshit with me!!! Quote Share this post Link to post Share on other sites
Morrison79 0 #3 October 11, 2007 i have a neptune and have compared freefall speeds with others and usually get a different number. Last time i compared with a protrack and got a 40 mph difference during a hybride jump. Mine might vary more cause its in my helmet, but i'm not sure. Quote Share this post Link to post Share on other sites
darkwing 4 #4 October 11, 2007 I don't know any details about their methods for calculating speed, but I can say that finding extremes in derivatives of noisy data is risky business at best. -- Jeff My Skydiving History Quote Share this post Link to post Share on other sites
faulknerwn 36 #5 October 11, 2007 I've seen great variance as well. On belly dives a friend's Altitrack is consistently 10-15 mph slower than mine. My Viso always seems to be really high - doing AFF recently with a TINY girl where I was wearing a huge baggy suit to stay with her, my Viso said we were going 133! Yeah right... When I was doing AFF with a big boy and wearing 20 lbs of lead, my Viso read 147 while a friend's Pro-track I took with me read 136... Quote Share this post Link to post Share on other sites
carve 0 #6 October 11, 2007 I think the issue is probably with my VISO and not my friends ALTITRACK- from L&B web site- [/url]http://www.l-and-b.dk/forum/forum/forum_posts.asp?TID=134[url] Quote Share this post Link to post Share on other sites
