Another Pro Track Question

[EDYDO 0]

I have one of my Pro Track alarms set at 4500 feet. I have made several exits from 4500 feet and it alarmed ON THE STEP before I jumped. I have also been inside the plane when others jumped at 4500 and it did not alarm. There have been no ill effects, I just can't figure out what is going on.

Anybody else experience this? Anybody understand it???

Ed

[AggieDave 6]

It is possible that due to the pressure difference outside the AC that it made a difference. Not only that, but since you said "on the step" I'm going to assume a C-182. Quite often a 182 is decending a bit while folks are on the step to help the pilot keep control.

Atleast that would be my best theory. I will say, though, that I have a LOT of hop-n-pops from 182s and never had my Pro-Track go off. Maybe your protrack got scared?

--"When I die, may I be surrounded by scattered chrome and burning gasoline."

[EDYDO 0]

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It is possible that due to the pressure difference outside the AC that it made a difference. Quite often a 182 is decending a bit while folks are on the step to help the pilot keep control.

I thought about the descent thing and that's why I mentioned that it never does it inside the plane under the same circumstances. It has me puzzled. It has done it several times.

Ed

[cvfd1399 0]

Where is it mounted? I have tested audibles outside a car window to see the effects of wind and what I would call a burble. If you hold them into the wind it will show one altitude, if you move it behind your hand, or in the slip stream of the mirror it will change a 20-50 feet. That might be a reason too. just got caught up in some funky pressure changes do to body position close to the trigger altitude and made it alarm.

[EDYDO 0]

Now that I think of it, I am always wearing my FFX camera helmet, with it mounted inside, when this happens. I have never had it happen with my (3) other helmets. (bonehead, frap hat, Velocity)

[phoenixlpr 0]

Yes. It has happened with me too.

HAve you noticed that pro-tracks are giving the turn-on sign with some seconds on the same load? Not at once but in 6 sec?

Have you noticed that Pro Track won`t log your jump if you have less than 5 sec freefall?

Why dont you set the 1st or 1st 2 alarm a bit lower?
If I jump from 1000m I set alarm to 925m.
Pilots fly about +-50m accurate or sometimes a bit higher :).

[EDYDO 0]

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Yes. It has happened with me too.

HAve you noticed that pro-tracks are giving the turn-on sign with some seconds on the same load? Not at once but in 6 sec?

Have you noticed that Pro Track won`t log your jump if you have less than 5 sec freefall?

Why dont you set the 1st or 1st 2 alarm a bit lower?
If I jump from 1000m I set alarm to 925m.
Pilots fly about +-50m accurate or sometimes a bit higher :).

I didn't understand the first question. As for the second, yes I have had a problem with the pro track not recording 4 second freefalls. There is a fix for that but you have to reprogram before and after the jump, I believe. That's too much trouble for me. I try to go six seconds at least. If I can't, I just have someone put it in his pocket for a jump to make the jump numbers correct.

As for changing the altitude alarms to prevent the sounding on the step. Well, it doesn't cause a problem, so I don't fix it. I have just been curious.

Ed

[jurgencamps 0]

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***... There is a fix for that but you have to reprogram before and after the jump, I believe. That's too much trouble for me. I try to go six seconds at least. If I can't, I just have someone put it in his pocket for a jump to make the jump numbers correct.

It is very simple to add a jump to the logbook. Ask somebody to show it to you.

Jurgen

[phoenixlpr 0]

You know they give a stand-by signal on 300m. Several units give that signal in some seconds interval.

[EDYDO 0]

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It is very simple to add a jump to the logbook. Ask somebody to show it to you.

I have asked around, I guess I asked the wrong people. I don't see it in my manual. Can you tell us here? Others will want to know, I am sure.

Ed

[jurgencamps 0]

[/url]http://www.l-and-b.dk/pdf/english_protrack.pdf[url]

Go to page 18 in the manual, "setting the logbook totals". You just add one or more jump(s).

Jurgen

[EDYDO 0]

OK, thanks. That's what I did to originally set it up. I sure wouldn't want to lose my log entries. I suppose it just shows a blank under the jump data for that particular jump and keeps everything else in proper order. With your advice, I think I have the courage to try it next time. Thanks.

Ed

[whatever 0]

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[/url]http://www.l-and-b.dk/pdf/english_protrack.pdf[url]

Go to page 18 in the manual, "setting the logbook totals". You just add one or more jump(s).

Jurgen

if you're going to bother adding the jump, add the freefall time too, so you are totally up to date

I don't add jumps often, but as I fly my wingsuit a lot at a turbine DZ, I often correct my freefall times, because the protrack 'times out' at 119 seconds and I'm generally doing around 150 seconds on solos from 14000ft.

cheers
sam

soon to be gone