Chest Mount Alti ~ Burble Misread?

[Kramer 0]

I recently just purchased a chest mount alitmeter so I can check my altitude while sitflying (something I can't seem to do with a wrist mount without turning or going a little unstable).

Anywho, someone was telling me that when you're sit-flying with a chest mount altimeter, it can be off by as much as a couple thousand feet because of the burble your legs create around your chest in such a position (thus making the altimeter malfunction).

Yes No? Thanks.

The FAKE KRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMER!!!!!!!!!

[AggieDave 6]

It *can* happen and it has happened...

Do you have an audible as well? Its a good idea to have one.

Get a few more jumps (coach jumps if you can) and you'll find that you can move your arms/head enough to see your alti no problem. You'll need to get where you can do that anyways so you can pick up docks.

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

[freeflydrew 0]

Mount it on your leg strap... There'll be less burble, It's super easy to read under canopy, and it's safer than on your chest... <--- my opinion

[michaelflying 0]

just turn your wrist and peek at your alti you don't have to bring your arm right in front of you that will come later.

www.skydivekzn.co.za

[INSANEDADDY 0]

I have mine mounted on a pillow on my chest strap and have had no problems. I also have a protrac for back up. I have never heard this before.

You dont't get to choose how you're going to die. Or when.......You can only decide how you're going to live........NOW.
-BASE 1605 Night BASE 227

[DrewEckhardt 0]

Quote

Anywho, someone was telling me that when you're sit-flying with a chest mount altimeter, it can be off by as much as a couple thousand feet

Yes No?

No. If you're falling straight down your chest is in the relative wind and it reads accurately. If you're actually on your back it can read a few hundred feet high. It can stick regardless of where it is.

[billo 0]

I jumped a chest mount for awhile when i was waiting for a new wrist mount to come in, and never noticed a major discrepancy between the chest mount and my audible when sit flying. HOWEVER, i did notice a nasty discrepancy on one tracking dive that I was leading on my back. i don't remember exact altitudes, but i do remember everyone tracking off much higher than expected (should have tracked away from formation about 4000, but i was reading between 5500 and 6000). I tracked a bit longer to get some more distance, and then was shocked when i saw how big the ground was and deployed, finding myself under a good canopy at just < 1500.

Granted, i was using an old student chest mount altimeter as a loaner and it may have been a bit sticky, but regardless, the burble probably helped the issue along.

If you are really concerned, jump with 2 altimeters for awhile and compare them at different speeds and different sitting positions. An audible never hurts either.

b