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Old 02-07-2007, 09:07 PM   #1 (permalink)
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F1 Illustrator leak

So riddle me this. When I hook a bottle up to the F1 it leaks down the barrel unless it is cocked. Once cocked, it does not leak and fires fine. When I recieved it leaked from everywhere so this is the last hurdle. Is this normal? What do I need to do to fix this?
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Old 02-07-2007, 09:14 PM   #2 (permalink)
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disconnect the air source.
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Old 02-07-2007, 09:15 PM   #3 (permalink)
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So riddle me this. When I hook a bottle up to the F1 it leaks down the barrel unless it is cocked. Once cocked, it does not leak and fires fine. When I recieved it leaked from everywhere so this is the last hurdle. Is this normal? What do I need to do to fix this?
It just means the Mainspring is stronger than the valve spring. While annoying it's not really a problem unless the velocity is way off. To stop the leak uncocked you need a stronger valve spring or a weaker main. Does it have a velocity adjuster? or is it using the spacers?

-MR
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Old 02-07-2007, 09:16 PM   #4 (permalink)
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disconnect the air source.
HA HA HA. .... smatherfrathergammadummit
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Old 02-07-2007, 09:18 PM   #5 (permalink)
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It just means the Mainspring is stronger than the valve spring. While annoying it's not really a problem unless the velocity is way off. To stop the leak uncocked you need a stronger valve spring or a weaker main. Does it have a velocity adjuster? or is it using the spacers?

-MR

It has a velocity adjuster on it, but it is all the way out. I will dig out a few springs and see what I can do with that.
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Old 02-07-2007, 09:23 PM   #6 (permalink)
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FYI, an Illustrator was my first semi back in 1991. I LOVED that gun. Very reliable and lightweight. There's nothing special about them in particular save that they're just plain nice.
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Old 02-07-2007, 09:30 PM   #7 (permalink)
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Its because there is preload on the valve. When the gun is uncocked the hammer has enough force to keep the valve open. When you gas the gun up the air does'nt have enough force to slam the valve shut....most blow backs are like this. You simply have to cock the gun before you air it up.

-Jake
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Old 02-07-2007, 09:56 PM   #8 (permalink)
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FYI, an Illustrator was my first semi back in 1991. I LOVED that gun. Very reliable and lightweight. There's nothing special about them in particular save that they're just plain nice.
Same here. Sold my Spectre () to fund an Illustrator. I snapped an assload of cocking pins before in one final gasp I managed to snap the striker. Man I was pissed. Learned the hard way you really want to put a dab of lock-tite on it to keep it in there.

-MR
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Old 02-08-2007, 02:31 PM   #9 (permalink)
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Yup. Most blowbacks need to be cocked or else they will leak because the hammer holds the valve slightly open. Just cock it when you gas it up - thats standard.
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