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Old 04-04-2010, 01:49 AM #1
rowdy6789
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Velocity Problem

Teammate has a Veloctiy Problem with the Geo out of the box. He is using a 68/4500 (I dont know if its low presure or high presure). The whole team was shooting the same paint. We tried turning it up, and we turned it up alot but the velocity stayed at 78-86. Yes air was on, however we got it straight from the box and didnt put a new batter or anything. Any suggestions?

Thanks

Rory N
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Old 04-04-2010, 02:50 AM #2
Staska
 
 
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I saw that you asked about the black spacers in another thread. Did your teammate insert these into the gun? Not having a tank with an output pressure of 850 psi could also be a factor. A reading that low, something has to be up for sure.

Last edited by Staska : 04-04-2010 at 02:53 AM.
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Old 04-04-2010, 05:58 AM #3
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No he didnt put any spacer in. I will ask what kind of tank it is (HP or LP) any other suggestions?

Thanks for your help/input Staska
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Old 04-04-2010, 06:01 AM #4
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BTW should a GEO run on HP or LP air system?
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DYE PRECISION, INC.
www.dyeprecision.com
Rory @ Dye Precision
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858.536.5183 ext. 221


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Old 04-04-2010, 06:27 AM #5
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runs on an HP tank....if you use a med or low pressure tank you need to get the low pressure spring for the in line reg.from PE
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Old 04-04-2010, 11:36 AM #6
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Yep, as stated, the Geo is intended to be used with an HP output tank.

As there is no LPR, the output of the inline reg is limited to protect the solenoid. As the output will vary somewhat depending on whether you are using an LP output or HP output tank - with the output pressure being higher when used with an HP output tank - it was decided to limit the maximum output pressure of the inline reg to a safe pressure when using the HP output tank.

Had the inline reg been limited to the correct operating pressure when using an LP output tank, people could crank out the reg adjuster to get full velocity with an LP output tank, but if they then switched to an HP output tank without first adjusting the Geo's inline reg, they might send too much pressure to the solenoid and damage it.

So, long story short, in stock configuration, the Geo should be used with an HP output tank. However, for those people who already have an LP output tank, there is an alternative reg spring available to convert the Geo's inline reg for use with an LP output tank. However, that brings us back to the original problem - don't then start using an HP output tank without switching the springs back, or you risk damaging the solenoid.

A good paint to barrel fit will help with velocity; no harm in trying a fresh battery; as I think you have the ST kits installed, increase dwell 2ms from the stock 12.5ms dwell setting - the ST kits have a slower bolt cycle than stock (to reduce kick and make the marker softer on paint) and this means that the dwell needs to be increased; make sure that the solenoid's back check ball is clean and undamaged, and that it is 4.00mm in diameter or larger (4.00-4.10mm is optimal); check that the bolt tip o-ring is in good condition (to prevent air loss due to blow back); check that the hole behind can's o-rings is just a pin hole - if it is too large, air from the firing chamber will be vented as the solenoid switches, wasting air and reducing velocity.
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Old 04-04-2010, 09:24 PM #7
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Quote:
Originally Posted by Uziel Gal View Post
Yep, as stated, the Geo is intended to be used with an HP output tank.

As there is no LPR, the output of the inline reg is limited to protect the solenoid. As the output will vary somewhat depending on whether you are using an LP output or HP output tank - with the output pressure being higher when used with an HP output tank - it was decided to limit the maximum output pressure of the inline reg to a safe pressure when using the HP output tank.

Had the inline reg been limited to the correct operating pressure when using an LP output tank, people could crank out the reg adjuster to get full velocity with an LP output tank, but if they then switched to an HP output tank without first adjusting the Geo's inline reg, they might send too much pressure to the solenoid and damage it.

So, long story short, in stock configuration, the Geo should be used with an HP output tank. However, for those people who already have an LP output tank, there is an alternative reg spring available to convert the Geo's inline reg for use with an LP output tank. However, that brings us back to the original problem - don't then start using an HP output tank without switching the springs back, or you risk damaging the solenoid.

A good paint to barrel fit will help with velocity; no harm in trying a fresh battery; as I think you have the ST kits installed, increase dwell 2ms from the stock 12.5ms dwell setting - the ST kits have a slower bolt cycle than stock (to reduce kick and make the marker softer on paint) and this means that the dwell needs to be increased; make sure that the solenoid's back check ball is clean and undamaged, and that it is 4.00mm in diameter or larger (4.00-4.10mm is optimal); check that the bolt tip o-ring is in good condition (to prevent air loss due to blow back); check that the hole behind can's o-rings is just a pin hole - if it is too large, air from the firing chamber will be vented as the solenoid switches, wasting air and reducing velocity.
Thank you sir, we will try the instructions you have given us and see how it turns out.

Thanks again,

Rory N
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REST IN PEACE MY BROTHER, JASON "TOWLIE" CALEF
DYE PRECISION, INC.
www.dyeprecision.com
Rory @ Dye Precision
rnamimatsu@dyeprecision.com
858.536.5183 ext. 221


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