The GEO CS2 (Planet Eclipse)

Written by Phil on . Posted in Markers

The GEO CS2 is the top-of-range Planet Eclipse for closed-ended markers called Spool valve. It has the following characteristics:

– Low pressure (450psi)
– SL5 controller
– POPS (On / Off / Purge System) with integrated regulator
– spool valve design
– Canon Shaft FL 14.5 inch with base 0.689 and 0.681
– Bolt CS2, GP core
– Firing trigger via mechanical or optical switch (optical recommended)
– Adjustable LCD screen card compatible E-portal
– weight: 869g (barrel and battery included)

The GEO CS2 of this article is the Destiny Edition. It is announced at 1495 € ttc, customer price.

The GEO CS2 is a real revisit of the GEO CS concept.

1. The Gun case

The gun case will be delivered to you in a cardboard box designed by the GEO CS2 which is the same as its predecessor.

The GEO CS2 gun case is a rigid plastic box that opens with a horizontal pull. It has its colors reviewed as you can see in the pictures. When you receive it, the gun case is covered with a clear plastic film. Once the gun case is open, there are 2 compartments. The compartments are filled with a rigid foam. The first compartment will contain your marker, as well as a set of allen key on a stand, a beautiful glossy manual, a barrel cap design GEO CS2, a tube of grease, part complete kit and a second cylinder head.

The second cylinder head is a cylinder head for hard ball. Planet eclipse had used not to recommend for it for  its fragile ball head and good for the CS2, it’s the opposite. Planet advises to use its fragile ball bolt which is the one  of origin on  the CS2.

The second compartment contains the Shaft front carbon tip and 2 Shaft FL bases, a 0.689 and a 0.681. The location to place the third additional base is already provided.

2. Ergonomy

Ergonomics is completely revised. The GEO CS2 is equipped with a grip on the front handle and on the rear handle. The front grip is in one piece. The grip of the frame is in 2 pieces. New: Note the disappearance of the screws on the grip of the frame. This is the grip that equips ETHA2. For those who have disassembled this grip, there was a blue plate pushing on the map button. In the CS2, this plate is integrated into the rear grip.

The front grip holds with clips. Just pull vertically down to unhook it.

Compared to the GEO CS1, the GEO CS2 is smaller than its predecessor. He lost weight of 119g.

For the moment, Eclipse did not foresee grips of colors. Be aware that the CS2’s frame grip is perfectly compatible with the one of  GEO CS2.

3. Barrel

The barrel becomes the FL Shaft which is the new standard gun at Planet Eclipse. The advantage? The carbon attenuates the noise of the shot and lightens the marker.

The GEO CS2 is supplied with 2 bases: a 0.689 and a 0.681. The gun, once mounted, is 14.5 ”. Point of view shooting quality, it surpasses these carbon competitors.

The FL Shaft is a cocker screw. It should be noted that the screw pitch for the junction with the front is reversed.

Other bases are available in 0.677 and 0.685. If you want a longer barrel, note that Planet did not release a 16 “carbon front cannon.

Parenthesis: the vast debate 14 “against 16” Apart from considerations of place in the game, the 16 “has that, as an advantage, to have a precision LONG distance greater than 14”. In addition this is marginal, since the guidance of the ball is longer, the pressure required for the same range is lower so the air consumption is reduced as well as the kick and the risk of breakage ball. BUT we insist that this point, on the consumption of air, is more theoretical than anything else.

4. Trigger

The trigger was, for once, reviewed. It is in 2 parts.

Screw A (the big black) will change the shape of the trigger in the future. Originally, the trigger is the comma-shaped blade.

Screw B sets the tension in the return spring of the trigger. The more it is managed, the more the tension is strong.

Screw C sets the post-trip distance. The more you screw it, the more the distance post firing trigger will be short.

Screw D sets the pre-trip distance. The more you screw it, the shorter the distance will be.

The screw E regulates the spring force of the magnet. Tightening, increases the strength of the magnet.

The post-travel screw F is the axis that holds the whole trigger block. If you unscrew, you risk losing it in game. There is NO advantage to play with it. Let it screw well.

A word on the firing trigger: The optical system disappears. Eclipse takes a step back by leaving only the switch.

5. Feeder

The feeder is the low rise model, smaller than its predecessor.

The feeder is of the same design as the GEO 3. It is of robust design. It is independent of the body of the marker, which is worth to be tightened to the body via a screw. The adjustment of the loader tightening is also done with a screw but is big enough to be taken by the fingers.

Small peculiarity, the feeder is offset compared to the axis of the marker to reduce ball breakage.

Despite their robust design, all Planet Eclipse feeder are breakable. In case of a fall, Planet prefers to see the marker breaking rather than the bones of their owner.

Unlike the old model, here with the low rise, you do not risk losing your clamp. Contrary to the clamp of the old model, it does not go on the low rise.

6. The eye System

The eye cover are completely revised. The big news for this system lies in the absence of electric cable! This is a real innovation for Planet Eclipse.

It must be said that this system has already been tested in ETHA2.

To access the eyes, remove the front grip by pulling it in the axis perpendicular to the marker body. Once the grip is removed, locate the sliding black plate, slide it and you can remove the eye cover. You will discover that it is held by a magnet. Under the eye cover you will find the diode of the eye as well as 2 ball detent. A first, in traditional position, used to hold the balls and the second serving reserve.
If on the field you damage the first ball detent, you just have to slide the second one in its place. A damaged detent is a cause of ball breakage. Do not forget once the day is over to replace the spare ball reserve you find in your kit share.

Technical level: under the eye cover is a “crystal” that redirects the infrared beam of the diode which is under the firing chamber.The result is the diode is not in contact with the ball A longevity element?

To turn off the eyes: turn on your GEO and hold down the upper button until the upper curve of the eye logo fades. The process is the same to relight.

Malfunction of the eyes: If the curves representing the eyes become a rectangle, you have a problem. Tip: clean and replace your eyes properly and check your battery.

When cleaning your eyes, properly remove paintballs and paintball debris. To remove the diode from its location, use a tip between the marker body and the diode cable to pry. Please remove all the dirt, even in the location of the diode.

7. The air system

The regulator is the same as the CS1. This is the SL5. The regulator has changed places. It is in the frame (back handle).

The SL5 controller is in direct connection with the On / Off. The GEO CS2 can operate in low (400 psi) or high pressure (850 psi). It is recommended to play at LOW 450 psi. We also recommend playing with the Ninja V2 pro, to have a good air flow.

ATTENTION: we talked about 800 psi, not 1000 psi or more. At too high pressures you risk damaging the joint that joins the pops and the frame. In addition, the piston seal of the SL5 and the seal do not like high pressure in the medium term.

In terms of autonomy, the GEO CS2 will draw its 11 pots and its loader with a bottle at 4500 psi. TO CHECK
It should be noted that since GEO 3, GEOs are serving alone.

8. The bolt

The bolt system of the GEO CS2 is also reviewed. This is an evolution of the gamma core that equips the marker GTEK.

The bolt since the GEO3.5 gets rid of the body of the marker by a clip no-tools. This one has been reviewed design point of view. Sometimes this one has a hard time locking himself. The solution is simple: you screwed the bolt guide incorrectly.

The bolt system is composed of 3 parts: the bolt, the can alias bobbin and a set of piece “pro shaft”.
The bolt is always equipped with 3 seals. The 2 front joints serve as bumper, shock absorbers. While the back seal (14×2 NBR70) is responsible for maintaining the pressure in the front firing chamber. The front seal (13 NBR70) is used to cushion the fall of the ball when it meets the bolt in the recoil phase. The seal between the 2 is a NBR 90.
Here, with the CS2, you will have 2 bolts. We recommend, for the first time, the bolt with the soft tip. The soft tip on this bolt unlike the previous edition is internal. He will be sweeter with the ball than his brother who is that of the GTEK.
The can is equipped with a single outer seal and an inner seal. The 2 outer seals (20 NBR70) make it possible to ensure the tightness for the pressure of the solenoid. The internal seal (17 NBR70) seals the pressure of the firing chamber. It should be noted here that the can is screwed to the proshaft. Please always screw completely without forcing.
The set of parts that we nicknamed “proshaft” is composed of the bolt guide with its tip, the spool, the switch, the pluger, the valve chamber and back cap.
Maintenance of spool and switch is essential. Please also correctly screw the bolt guide on the Valve Chamber. To disassemble the bolt guide, do not use an allen wrench in the holes or a wrench, just the right elbow grease with a cloth.

  • At the maintenance level, do not abuse the grease. refer to the video below.

In regular maintenance, it is not necessary to disassemble your spool. In case of problems here is a video explaining how to do this.
Spool maintenance:

9. The solenoid

To remove the Frame: Remove the bolt and the grip from the front handle. Once done, you have access to 2 screws that hold the frame. There are no special precautions to separate the body of the CS2 from its handle. There is no cable between 2. There is however against the CS2 a notch in the front to be respected.
The solenoid has been completely revised since GEO CS1. It is removable. The solenoid is in two parts: one of supply and the other a valve. Once the 4 screws hold it on the body of the marker, the 2 parts separate easily. The piston can be extracted using the small pliers.

Under the solenoid is the solenoid Gasket. This gasket is very important, please do not damage it. It requires no maintenance except the day when to dismount your solenoid.

When talking with the solenoid, please do not put too much grease . Please also evacuate any debris.

The solenoid is no longer adjustable by a screw on the trigger frame, called Solenoid Flow Restrictor (SFR). This one was removed by Planet because it caused too much problem. The amateurs of technique will regret it.

A word about Solenoids from Planet Eclipse. They are produced in the same factory as the other brands. But Planet Eclipse solenoids are produced completely separately. They are not solenoids from the industry. They are designed at Planet Eclipse and not at this plant. It is Planet Eclipse that imposes its concept and the factory only produces it. This clearly shows the pole of research and development of Planet Eclipse.

10. The regulator

The GEO CS2 is equipped with the new SL5 controller, integrated into the frame. It’s the same regulator as the GEO CS1.

The design as a whole is similar to its predecessors namely a piston, a spring and a velocity screw.

The piston seal is a 14×2 nbr70. The velocity screw sees its top “hat” reviewed. Eclipse was smart enough to provide flat surfaces for easy disassembly. Under it you will find the traditional seal, the mini spring and the white plastic rod.

When lubricating the piston seal, do not hesitate to lubricate the end of the piston to grease the seal 008 NBR70 inside the regulator body.

11. The board

The board of GEO CS2 is not the same as that of GEO CS1.

The grip of the handle opens with 2 clips on each side of the handle. For ease when reassembling it, Planet Eclipse has provided help to keep the grip in good position.

We note the presence of a long card in the upper part of the marker’s frame and parallel to it in addition to the traditional card in the frame under the main grip. The 2 boards are connected via a huge white central cable that connects via a red plug on each side of the white cable. Note that there is a meaning to the red plug. Do not force, if the sense is good, it goes all alone. This card is equipped, under it, the mechanical switch for triggering the shot. The emitter and the receiver of the eyes are in the front part of this one. There is also a micro USB port to connect the board via the Eportal4 to your PC.

Each card is held by 3 black screws. The solenoid is connected to the motherboard in the frame handle via a black and yellow cable.

The board has a screen for easy adjustments.

Once on, the board screen displays:

  • “The user selectable display option” is, by default, a screen scrolling on the main settings of the card .. By pressing the upper button, you can replace it by the countdown or by the ball counter or a graph representing the number of ball / second average (the actual rate of fire) or a graph representing peak peaks / peak peaks of fire. The graphs display 2 values. The higher value displays the measured value. The lower value displays the value that the GEO CS2 is supposed to reproduce. To set the countdown, refer to the card menu in the Game Timer section.
    To reset the different values, press and hold the lower button.
  • “The break beautiful sensor system indicator” represents the state of the eyes.
  • “The battery level indicator” represents the gauge of the battery.
    IMPORTANT NOTE: At startup, there is a question mark “?” which appears on the logo of the stack. Why ? Eclipse had always had problems with its battery indicators. Before when you turned on your Eclipse marker, the indicator was at maximum then it could drop drastically during the first shots and go up just as fast. Now, the card is waiting a few firing cycles to display the true value of the stack level.
  • “The loch indicator” is represented by a padlock. This is the state of the card lock. How to unlock or lock your card? Once the marker is lit, locate the red button on the map of your GEO 3.5. Press to unlock or lock your card.
  • “The sound indicator” represented by a loudspeaker logo to inform you if the alarms are activated.
  • “The trigger detection indicator” is in the shape of a triangle that specifies the activation of the trigger.
  • “The aux indicator out” is only displayed if your card is connected to a PC or the bluetooth connection is activated.
    Note that during the ignition, the traditional sound is decalled 2 seconds from the ignition which can disrupt more than one.

The card is powered by 2 1.5 V battery located in the front handle, initially occupied by the regulator. To remove the front grip, pull it in its axis. Once you change your batteries, take the opportunity to remove paint from the ball and any debris. Note the presence of a + and a – to help determine the correct sense of your batteries.
Eclipse estimates that it has increased the marker’s autonomy by 30% with this new process.

To turn off your GEO CS2, press and hold the central button or press the same button twice quickly. The display shows Turn Off. Then press the center button once again and your GEO CS2 will turn off.

To unlock your card, undo the grip on the right side and mark the red button. Press it with the marker on and your GEO CS2 will unlock.

To access the menu, once on the Turn Off screen, press the upper or lower button to scroll the menu in the direction as in or away from the manual. Note that the menu is accessible even if the card is locked. However, if the card is locked, you will not be able to change the values.

Turn off

What about the settings of the card? See at the end of the article our translation and explanation of the menu of the card as well as the default values.

We remind you that the card is adjustable via a PC. You will need to purchase the E-Portal4, which also allows you to customize the logo on the display of your GEO CS1.

12. The frame

The frame  of the GEO CS2 has been strengthened compared to the GEO CS1.

To remove this one:

– Remove the front grip.
– Remove the bolt,
– Unscrew the screw under the bolt and the screw between the 2 handles,
– Separate the body of the marker and the frame.

Pratical test

The test was conducted in April 2018. It was 15 ° C and wet. The ball used was proshar tournament. The Chrony is a Virtue. The base was perfectly adjusted to 0.685.

We noticed that at the exit of box, the GEO CS2 had kicked. This kick goes down with time until disappearing towards 5000-6000 marbles.

The CS2 is extremely regular and has a tight shot.

We likedWe disliked
Stretch FirePrice, again to much
Regularweight more 76g, again to heavy
New battery (2xAA)
End of electric cable between frame and body
End air pipe transfer andmacroline
Power management
Remove trigger
End of eye cover and grip screw
Second ball detent
Regulator to the frame


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GEO CS2 is the revolution of the GEO CS platform. Everything is changed, finally almost … only the regulator and the feeder of CS1.5 remained the same.

Eclipse has been in the right direction. No more screws and macrolines outside! Magnetic eye cover, grips that snap, a frame much stronger, well maintained batteries and equipped with a plug very easy to use!

The shooting quality returns to the one that made the success of this platform namely the GEO 3.0 which had a tight shot.

Nous avons appréciéNous n'avons pas aimé
Le tir tenduPrix en baisse mais pas assez.
RégularitéIl a maigri mais pas assez à mon gout.
batterie (2 piles AA)
Finis les câbles entre le corps et le frame
Finis l'air pipe transfer ou macroline
La gestion de la batterie par la carte
La possibilité de changer la forme de la gâchette
Finis les vis aux Eye Covers et au grip
Le deuxième ball detent de secours
Le régulateur intégré au frame.

Black Tiger Tips :

Keep the original settings and the original bolt. You can even loosen the trigger before you hear the click when you pull, it’s very confusing but it works.

Also, plan for a 685 base.

If you want to customize your marker, the E-portal4 is the perfect companion, soon available

If you want to dismount the POPS, watch the explanatory video below.


Promotional video :

Board menu :

Once in the menu of the map, several options are accessible to you:

PRESET, this menu has been simplified

  1. Semi Inc
  2. Semi 10
  3. Semi 15
  4. NXL 2016
  5. PSP 2015
  6. PSP Fast
  7. Retro
  8. USER 1
  9. USER 2
  10. Train


  1. SEMI
    Your GEO CS2 will fire piecemeal with each pull of the trigger.
  2. RAMP
    Your GEO CS2 will ramping according to the settings chosen in the RAMP SETUP.

ROF CAP, 3 options :


  1. ON
    Once activated, the ROF CAP will allow your GEO CS2 to be limited in number of shots per second.
  2. OFF
    Your GEO CS2 will be unlimited in number of shots per second and so the only limit will come from the speed of your loader.


This is the maximum limit of the number of shots when the eyes are activated. The limits are between 4 and 30 beads per second. You can fine-tune the setting by 0.1 bps.

To comply with the NXL, set it to 10.0 bps.


This is the maximum limit of the number of shots when the eyes are disabled. The limits are between 4 and 15 balls per second. You can fine-tune the setting by 0.1 bps.

To comply with the NXL, set it to 10.0 bps.

RAMP SETUP, 6 options :

ramp setup

  1. TYPE
    – STEP is a control where the marker will activate the ramping only if the trigger pressures match the parameters SEMI SHOTS and KICK IN. The maximum firing rate will be set by the BS ON ROF if the ROF CAP is activated.
    – LINEAR is a control where the marker will activate ramping only if the trigger pressures match the SEMI SHOTS and KICK IN parameters. The maximum rate of fire will be determined by the frequency of the trigger pressures multiplied by a BS ON ROF rate (to be determined in the following RATE submenu) if the ROF CAP is activated.
    – CANCEL, cancels and does not modify the parameters initially chosen.
    This is the number of shots needed before the ramping starts. According to Millenium rules, it takes 3 shots in semi-automatic so that the ramping can be triggered.
  3. KICK IN
    This is the speed at which triggering fires of ramping must be produced. According to Millenium rules, it takes a speed of 5 bps.
    This is the speed at which one must squeeze the trigger to maintain ramping. According to Millenium rules, it is 5 bps.
    This is a parameter that determines the time after the last press (at proper speed) during which the ramping is held. In Millenium rule, it is 0 seconds.
  6. BACK, to return to the previous menu.

TIMING, 4 options :timing

  1. DWELL
    The dwell is the time during which your solenoid sends air to the bolt. By default, it is 27.0 ms. It is important for Planet Eclipse markers to leave this parameter at its factory value.
  2. FSD COMP “First shoot droop-off compensation”
    This is the compensation of the value of the dwell at the first shot. Indeed, it is necessary to increase the dwell on the first shot to compensate for the fact that the bolt is “stick” to the can. The parameter is adjustable from 0 to 5 ms. The precision of the adjustment is done by tenth of a millisecond.
  3. FSD DELAY “First shoot droop-off delay”
    This is the time that must elapse for the FSD COMP to be reactivated. This parameter ranges from 0 min to 4h00.
  4. BACK, to return to the previous menu.

FILTER, 6 options :filter

    The debounce is the parameter that sets the sensitivity of the trigger. In truth, it is the parameter that prevents shots whose origin is not the pressure on the trigger but the kick what is called the Bounce. On some markers or on triggers too short, the kicker may throw a new unwanted shot.
    We recommend placing the DEBOUNCE on LEVEL 2.2->8. The following parameters are the sub parameters of Debounce. They are not to be modified.

    BACK, to return to the previous menu.

HARDWARE, 12 options :hardware

  2. SOUND
    Turns on or off sounds made by the card.
    Turns on or off the beeps emitted by the card.
    This setting allows you to set how long the screen stays backlit without pressing a button on the handle.
    These 3 settings allow you to choose the amount of red, green and blue you want to mix to get a custom color of your screen.
    This setting allows you to adjust the intensity of the LCD screen of the card.
    This setting allows you the amount of time your marker stays on without you using it before shutting down.
    The double click replaces the continuous pressure on the buttons on the handle of your marker.
  11. RESET
  12. BACK, to return to the previous menu.

TRAINING, 3 options :training

  1. OFF
  2. ON

The training allows to make send by your marker a bio with each pressure of the trigger and thus simulate the ramping of your marker without it being under air and thus ready for shooting.

SHOT COUNT, 3 options :shoot count

  1. GAUGE
  3. BACK, to return to the previous menu.

The shot count counts the number of shots executed by your marker. On the start screen, if you display the counter, you can zero this counter by pressing the lower button.

game timer


  1. GAME
    This setting allows you to set the countdown time.
  2. ALARM 1
    This setting allows you to set when you want to hear an alarm when your countdown timer is activated.
  3. ALARM 2
    This setting allows you to decide how you want your countdown to begin. You have the choice between pressing the button on the top of the handle or on the trigger.
  5. BACK, to return to the previous menu.

EXIT : to exit the menu and return to the start screenexit

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