Slider question

[AnotherGoodin 0]

Ok I'll stop posting questions for the night HAHA! But, Does the slider effect the way a canopy is controlled by having it stowed or unstowed? I have noticed a difference, I jump a Safire 169.

If life gives you lemons then make lemonade, if not then go thirsty and keep on truckin'

[skybytch 273]

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Does the slider effect the way a canopy is controlled by having it stowed or unstowed?

Huh??

[larsrulz 0]

There is minimal aerodynamic effect of leaving a slider unstowed on that size of canopy. The biggest difference between stowed and unstowed is the level of annoyance, i.e. the flapping.

I got a strong urge to fly, but I got no where to fly to. -PF

[AnotherGoodin 0]

Well like I said I have put about 100 jumps on it and I feel like there is a difference when I try to land. I have heard that the flare on a safire 2 is kind of tricky. I raised this question about the slider to my people at the dz and it raised a few eyebrows because no one has really looked into it.

If life gives you lemons then make lemonade, if not then go thirsty and keep on truckin'

[SkymonkeyONE 4]

The smaller the canopy, the more difference it makes in whether you have your slider pulled all the way down and stowed (and your chest strap loosened all the way out) or not.

[riggerrob 643]

While cleaning my loft, I ran across some old notes from a lecture that Parachutes de France gave durign a PIA Symposium.
They said that a loose slider can produce up to 15% of the total drag on a canopy.

[larsrulz 0]

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While cleaning my loft, I ran across some old notes from a lecture that Parachutes de France gave durign a PIA Symposium.
They said that a loose slider can produce up to 15% of the total drag on a canopy.

That's certainly surprising. Do the notes say how they came upon this? Because I know the drag on a flapping sail, for example, isn't too terribly high, and I would certainly imagine that the jumper would produce much more form drag than a slider. Do they cover collapsible PCs vs. not, cause I'm curious as to the percentage there.

I got a strong urge to fly, but I got no where to fly to. -PF

[meltdown 0]

After taking the Brian Germain course, I started stowing my slider and loosening my chest strap, and it made a huge difference (Spectre 170 loaded at .97). I had been collapsing it before, but was not pulling it down over the risers. My canopy flies faster now and has much more flare power.

[FrogNog 1]

The only things bringing the slider down past the links has ever done for me are:
1. increased the amount of unproductive work I have to do to my equipment between deployment and landing
2. gotten in the way (I don't have any sort of keeper on my primary rig, so anytime I look down and turn the slider gets right behind my skull)
3. helped unstow my brakes for me. (Not something I need help with. )

So now I collapse it and leave it up. YMMV, of course. I did what works for me.
[220 lbs OtD estimated;
Hornet 190
Sabre2 150]

-=-=-=-=-
Pull.

[AnotherGoodin 0]

Well I really think its something that is overlooked and not considered too much of a deal but no one really brings it up... It would be cool if people started thinking about different/new aspects of a slider. (Sounds cheesy) But humans just have a hard time accepting change but anyways who knows what could come of it...

If life gives you lemons then make lemonade, if not then go thirsty and keep on truckin'

[mjosparky 4]

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Well I really think its something that is overlooked and not considered too much of a deal but no one really brings it up... It would be cool if people started thinking about different/new aspects of a slider. (Sounds cheesy) But humans just have a hard time accepting change but anyways who knows what could come of it...

People have thought about it. One this is the split slider. See attached picture.

Sparky

My idea of a fair fight is clubbing baby seals

[AnotherGoodin 0]

that's pretty cool... I have seen something like that before. What is the purpose of the split slider?

If life gives you lemons then make lemonade, if not then go thirsty and keep on truckin'

[mjosparky 4]

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that's pretty cool... I have seen something like that before. What is the purpose of the split slider?

It allows the canopy to open up and flatten out. On larger canopies they fly more stable in deep brakes and the flare from 1/2 or 3/4 brakes is better.

Sparky

I am not an artist, but look at the drawing.

My idea of a fair fight is clubbing baby seals

[riggerrob 643]

Split sliders were popular with accuracy competitors long before Type 17 mini-risers became fashionable.

NAA Para-Foils were built with huge d-rings on the slider corners that allowed competitors to pull their sliders down to shoulder level.

A few photographers even experimented with removable (under canopy) sliders, however that required far to much labor to re-assemble after every jump.

[PhreeZone 20]

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A few photographers even experimented with removable (under canopy) sliders, however that required far to much labor to re-assemble after every jump.

Removable sliders are back for a lot of serious swoopers. It helps them spread the canopy and remove some drag. Never jumped one so I have no idea how well it works.

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[AnotherGoodin 0]

Thanks guys for all the info... like i said people just don't talk much about them so it's good to find new things out...

If life gives you lemons then make lemonade, if not then go thirsty and keep on truckin'