body flare

[Staso 0]

there was a post recently regarding landing wing-suit. so i decided to share
some interesting info :)
last sunday was very good jump-wise for me. i reached good speed of 290 mph
on one jump (i do speed dives), but i also had another jump that wasn't really
fast but amazed me more then i expected. take a look at the pic in attachment.
i reached 265 mph, lost my balance, reached 265 again, pull out pretty hard
and went to track. so much vertical speed gave my plenty horizontal speed in track
to produce a lot lift. and as result it slowed me down to 45 mph ! in regular
RW suit. i'll try to get faster next time and slow down harder and see what the
slowest speed i can achieve. I think this range of speed might be low enough to
crash into the water and survive. not that i'm planning on it, but just an
interesting thought :) the timing should be so right though :)
stan.

[pop 0]

WOW, thats very interesting. Do you think, had you been wearing a BirdMan suit, you could have slowed down even more?
----------
"The greatest trick the devil ever pulled, was convincing the world he doesn't exist!"

[AggieDave 6]

Or ripped your arms off?
Aerials
So up high
When you free your lives (the) eternal prize

[SkydiveMonkey 0]

Nice graph !! That's quite impressive getting 45mph in a regular suit.
When I grow up, I want to be a post whore

[Staso 0]

> Or ripped your arms off?
that's most likely :) on my good jumps i expirience around 2G when i brake.
wings would definetely do some harm :) on my acceleration path i weigh only
about 75 lbs (my weight is 185 lbs).
on one of my jumps i either didn't have perfect body position or there was something
else that caused my right sleeve to flap against my arm (close to my shoulder where i
has some slack) so hard that i discovered nice blue-red bruise when i got down :)
at 240+ everything gets weird and violent :)

[cpoxon 0]

Stan,
Where is your ProTrack mounted? If it is in your helmet it may be very unreliable when doing Speed Dives. Having a second ProTrack can help determine if the data is relatively clean.

[Staso 0]

Craig,
Yes, it is mounted in my helmet. I also have Pro Dytter and it looks like it lies
on high speed. It beeped twice at 7500 instead of 5500 on my two best jumps. I
talked to Ken (speed diver from Norway) and he said he had the same problem and
now he has it set lower. Did you expirience something like that ?
According to new rules two ProTracks should be mounted on the sides of the rig.
How exactly are they mounted ? Will average values taken from two ProTracks mounted
both inside of the helmet be accurate ? I'd rather have them both in my helmet for
training just for safety reasons.
And since we are on the topic, what's your opinion on booties for speed dives ?
I seem to be more stable with booties and I remember seeing Mike Brooke's pic
where he was wearing J&F suit with booties, but I didn't find any info
on booties on J&F web site.
Thanks,
Stan.

[QuickDraw 0]

Quote

Or ripped your arms off?

Sorry i'm late...LMAO
"Bart, stop pestering satan" - Marge Simpson.

[cpoxon 0]

Stan,
> According to new rules two ProTracks should be mounted on the sides of the rig.
How exactly are they mounted ?
The plastic brackets that come with the ProTrack have bungees encircling them and are cable tied the the "lateral" webbing (the bit between the hip junction and the container). The bungees are used for a bit of extra security and obviously need to put around the bracket before the zip ties are tightened. If you are not doing a speed dive I would recommend either removing them or taping over them as they (and the cable ties) pose a (very slight) snag hazard. You can release the ratchet in the cable tie with apin to reuse them.
>Will average values taken from two ProTracks mounted
both inside of the helmet be accurate ?
Not really. In fact, having two in your helmet (on opposite sides) will indicate how differently they can read. The differences would (probably) be too wide - an indication of inaccurate readings.
> I'd rather have them both in my helmet for
training just for safety reasons.
Very sensible. In competition we are provided with loan units very kindly supplied by Larse & Brusgaard so we can use or our units (usually two) in our helmet.
> And since we are on the topic, what's your opinion on booties for speed dives ?
I seem to be more stable with booties
My first speed dives were done in a tight RW suit and I felt I had more control wearing booties
>and I remember seeing Mike Brooke's pic where he was wearing J&F suit with booties,
Mikes booties are made out of the same material so are probably more to reduce the drag from footwear rather than provide extra stability.
>but I didn't find any info on booties on J&F web site.
Mike is sponsored by J&F and has a special relationship with them, in as much as they have done extra work to some of his suits such as the booties. I don't believe these are options though there would be no harm in asking. Mike also has a test suit which has fins on the back that the rig sits between providing some deflection.
Craig