Sinkster 0 #1 December 2, 2002 On 2 seperate RW jumps this weekend my fairly new Pro-track said I got a max speed of 170. The first time someone said I might have been going head down in a track which explains the speed but I couldn't figure out how I didn't know that but I still practiced rolling my shoulders and getting flat. So, on another RW jump the next day with me exiting as part of the base so I know it wasn't after exit I got 170mph as well on the Pro-track. This time I did some very flat tracking rolling my sholders with legs straights out, etc. What gives? Anyone know how 170mph would come up, or does the protrack give a vector speed including horizontal movement somehow? My Pro-track is set for SS. Thanks for any info about it. Just curious if this is a bug or something. Quote Share this post Link to post Share on other sites
Sonic 0 #2 December 2, 2002 I've done this before - thought I was tracking really flat, looked at my pro-track after and found I hit 150mph.----------------------------------- It's like something out of that twilighty show about that zone Quote Share this post Link to post Share on other sites
Sinkster 0 #3 December 2, 2002 So you think u were really pitched head down? Quote Share this post Link to post Share on other sites
Sonic 0 #4 December 2, 2002 Must have been "pointing" down more that I thought. It was definatly when I was tracking. Can you ask someone else who was on the dive if they saw the track?----------------------------------- It's like something out of that twilighty show about that zone Quote Share this post Link to post Share on other sites
Sinkster 0 #5 December 2, 2002 No one saw those particular tracks except the start of them which they said looked good. In any case, I will just keep working on my track to maximize the glide ratio so that should fix it if it really is a significant issue. Thanks for the info. Quote Share this post Link to post Share on other sites
Sonic 0 #6 December 2, 2002 I've done a quick 2 way before and asked the other person to stay where they are and watch me track off (broke at 7k cos I wanted to track ), it's good when you get someone else's perspective on it, especially when they are "still" ----------------------------------- It's like something out of that twilighty show about that zone Quote Share this post Link to post Share on other sites
bobsoutar 0 #7 December 2, 2002 Ask someone else with a Protrack to take yours up with them so that you can compare the two. Quote Share this post Link to post Share on other sites
PhreeZone 15 #8 December 2, 2002 If you pass through burbles (like exits) it can throw the protrack off. Using Jumptrack will show you the places where you hit the highest and lowest speeds.Yesterday is history And tomorrow is a mystery Parachutemanuals.com Quote Share this post Link to post Share on other sites
Ron 7 #9 December 2, 2002 Heres another question... I have a Pro Dytter... It works great, but after I land it starts making these quiet beeping noises???? I think it is just the batterys, but I have never heard of one doing this before... Anyone? Ron"No free man shall ever be debarred the use of arms." -- Thomas Jefferson, Thomas Jefferson Papers, 334 Quote Share this post Link to post Share on other sites
Sonic 0 #10 December 2, 2002 Send L&B an email about it - they'd be the best ones to answer your question.----------------------------------- It's like something out of that twilighty show about that zone Quote Share this post Link to post Share on other sites
kallend 1,635 #11 December 2, 2002 Quote On 2 seperate RW jumps this weekend my fairly new Pro-track said I got a max speed of 170. The first time someone said I might have been going head down in a track which explains the speed but I couldn't figure out how I didn't know that but I still practiced rolling my shoulders and getting flat. So, on another RW jump the next day with me exiting as part of the base so I know it wasn't after exit I got 170mph as well on the Pro-track. This time I did some very flat tracking rolling my sholders with legs straights out, etc. What gives? Anyone know how 170mph would come up, or does the protrack give a vector speed including horizontal movement somehow? My Pro-track is set for SS. Thanks for any info about it. Just curious if this is a bug or something. Where is the ProTrack located? What type of helmet do you use? Did you pass through a burble? Do you have access to Jump Trak software to give a plot of your speed during the jump?... The only sure way to survive a canopy collision is not to have one. Quote Share this post Link to post Share on other sites
Staso 0 #12 December 2, 2002 QuoteWhat gives? Anyone know how 170mph would come up, or does the protrack give a vector speed including horizontal movement somehow? My Pro-track is set for SS. Thanks for any info about it. Just curious if this is a bug or something. change SAS to TAS and see how much it show. what was the average speed for the dive ? average for the first and second half ? stan. -- it's not about defying gravity; it's how hard you can abuse it. speed skydiving it is ... Speed Skydiving Forum Quote Share this post Link to post Share on other sites
Sonic 0 #13 December 2, 2002 Changing it to TAS should only increase the speed----------------------------------- It's like something out of that twilighty show about that zone Quote Share this post Link to post Share on other sites
Staso 0 #14 December 2, 2002 Quote Changing it to TAS should only increase the speed i just checked some graphs and it's basically true. to some altitude (don't remember the exact number) SAS will be lower. and it will be higher after that. see pic attached. stan. -- it's not about defying gravity; it's how hard you can abuse it. speed skydiving it is ... Speed Skydiving Forum Quote Share this post Link to post Share on other sites
Sonic 0 #15 December 2, 2002 Should be 4000 feet, cos that's what it's calibrated to.----------------------------------- It's like something out of that twilighty show about that zone Quote Share this post Link to post Share on other sites
Staso 0 #16 December 2, 2002 QuoteShould be 4000 feet, cos that's what it's calibrated to. yeah, i think it's 4000 ft. it looks more like 3500 on the picture but it just means that temperature and preasure were not standard at the time. stan. -- it's not about defying gravity; it's how hard you can abuse it. speed skydiving it is ... Speed Skydiving Forum Quote Share this post Link to post Share on other sites
Sinkster 0 #17 December 2, 2002 QuoteWhere is the ProTrack located? What type of helmet do you use? Did you pass through a burble? Do you have access to Jump Trak software to give a plot of your speed during the jump? Answers: It's mounted externally to an Oxygn A3. Burble could definately be it. I know for a fact I did on one -- it was a 6 way combat rw. And on the other me and another dude were doing some funky linked barrel roll stuff for fun. I thought about Jump Trak, but no one has it that I know of at my dz. But eventually when I get the dough I will get it b/c it looks useful and a lot of fun. Quote Share this post Link to post Share on other sites
indyz 1 #18 December 2, 2002 Do you have it set for feet per second? 170 fps is about 116 mph. Quote Share this post Link to post Share on other sites
johnny1488 1 #20 December 3, 2002 I would say a burble would have to be it. I get it on mine sometimes when i track away. I sometimes go above the group when I track but still have a speed increase on the graph. When I do a tracking dive though it shows a much lower speed(80-something is my best so far I think). If the PT thinks you're at 4000 feet then in 3 or 4 seconds you're at 3000 it has to make up the difference somewhere. Johnny Johnny --"This ain't no book club, we're all gonna die!" Mike Rome Quote Share this post Link to post Share on other sites
