Cypres Questions!

[nightcrew17 1]

Hello, I am a student still, but I am shopping around for a rig right now, and what is the difference in a cypres expert and student, and one pin and two pins??? thanks for your help.l

[eames 0]

Expert: Fires at 78mph at 750 ft.
Student: Fires at 29mph at 750 ft.

One pin: For one pin reserve containers.
Two pin: For two pin reserve containers.

Jason

[nightcrew17 1]

So, I have to see what kind of container I will have before getting a specific cypres?

[eames 0]

Yes, but most modern sport rigs use a one pin system. Racers are probably the most common example of a two pin system.

Jason

[AndyMan 7]

Sort of.

Student cypres's are intended only for drozone student operations. They're indended to students jumping "student" gear.

The difference is that speed they activate at. A 'Student' will active 29 mile per hour, the idea being that if the student is in a spinning malfunction, it will activate.

An 'expert' cypres will most likely not activate in a spinning malfunction, to allow for that would also allow the unit to fire in a diving turn, for example.

If you're buying your own Cypres, buy an expert one. The student ones are exactly that - for Students.

As for one pin or two pins, yes - this depends on what rig you buy. However, almost all modern rigs are 'one pin' designs.

_Am

__

You put the fun in "funnel" - craichead.

[USPA 0]

Quote

Expert: Fires at 78mph at 750 ft.
Student: Fires at 29mph at 750 ft.

This is wrong!
In m/s:
Expert:
fires at 35 m/s or faster at 750 feet
Student:
fires between 13 m/s and 35 m/s at 1000 feet
Fires at 35 m/s or faster at 750 feet.

The student is only ment for the first few (Student) jumps. Go for the expert.

The 1 or 2 versions depends on the rig you are jumping. (E.g. a pop-top needs a 2 pin version).

The trouble with skydiving; If you stink at it and continue to jump, you'll die. If you're good at it and continue to jump, you'll see a lot of friends die...

[eames 0]

You're correct, thanks for clarifying.

Jason

[eames 0]

Quote

The 1 or 2 versions depends on the rig you are jumping. (E.g. a pop-top needs a 2 pin version).

The existence of a pop-top does not a two pin system make (e.g. Reflex).

Jason

[pkasdorf 0]

Well, it is not wrong as far as speed is concerned, if you allow for english - metric conversions both speeds are practically the same!

HISPA # 18 POPS # 8757

[jerm 0]

Quote

Quote

Expert: Fires at 78mph at 750 ft.
Student: Fires at 29mph at 750 ft.

This is wrong!
In m/s:Expert:fires at 35 m/s or faster at 750 feet
Student:
fires between 13 m/s and 35 m/s at 1000 feet

How exactly was the first post wrong? 35meters/sec = 78.75miles/hour

and as for the student version... are you saying that over 35 m/s it won't fire?

Here is what Airtec has to say about it:
(http://www.pia.com/airtec/SC_eng.pdf)
"The Student CYPRES will activate and therefore cut the reserve loop when it detects a rate of descent above 29 mph (13 m/s) at an altitude of approximately 750 ft AGL
(225m)."

Landing without injury is not necessarily evidence that you didn't fuck up... it just means you got away with it this time

[eames 0]

His numbers are right, he's just clarifying that it technically won't open at 750 ft if you're going 29 mph (13 m/s): It'll open at 1000. Here are some examples:

@1000 ft -> student is traveling 29-78: Cypres fire.
@1000 ft -> student is traveling 78+: No Cypres fire yet.
@750 ft -> student is traveling 78+: Cypres fire.

This is very significant when a student rides the plane down (because of weather, etc.). I've seen a Cypres fire @1000 ft due to a high descent rate.

Jason

[apoil 0]

Quote

This is wrong!

..snip..

The 1 or 2 versions depends on the rig you are jumping. (E.g. a pop-top needs a 2 pin version).

Nothing like following up a correction with more misinformation.

A two pin pop top requires a two pin version.

Reflexes and Tear Drops have one pin poptops.

Javelin, Wings, Dolphin and a few others have one pin semi-poptops.

To my knowledge ONLY the racer has a two pin poptop.

[riggerrob 643]

May I add a correction to your correction of a correction?
Racers may be the only two-pin Pop-Tops currently in production, but in previous years many factories copied Racers.
The best Racer clone was probably the Excalibur built by Flying High in Canada.
British companies built Chaser and Tracer harness containers. One was licensed by Jump Shack and the other was not, but I cannot remember which.
Sod Shit in Florida built copies of the early SST.
At least one New Zealand company built Racer clones, but they used their imagination when it came to routing shoulder straps through 3-Ring hardware, so there was s service bulletin on them.
All this is history since all these companies quit building Racer clones a while ago and several of them quit the skydiving business completely.