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Replacing The Spring In A Crossbow


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#1 Tsunami

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Posted 31 May 2007 - 04:45 PM

When I replace the spring, it doesn't cock anymore, it goes all the way back but doesn't "lock". When I put the old spring it works just fine but it's too weak of a spring. So yeah, anyone ever have this problem or have any suggestions? I think the spring may not be the right size, maybe too long. I don't want to cut it and it to still not work though.

Thanks.
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#2 frost vectron

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Posted 31 May 2007 - 05:02 PM

One of two things is happening here:

1) The trigger catch is not seated correctly or is not catching for some reason. Your plunger may be upside down so the grooves don't fall into place correctly for the trigger to catch. The trigger spring might be too weak (I suggest replacing it anyways since you did a spring replacement).

2) The spring is simply too long. When it is fully compressed, it is still too large and won't let the plunger catch. This means your plunger isn't travelling the full distance it should be--the size of the compressed spring is longer than it should be.
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#3 Tsunami

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Posted 31 May 2007 - 05:08 PM

One of two things is happening here:

1) The trigger catch is not seated correctly or is not catching for some reason. Your plunger may be upside down so the grooves don't fall into place correctly for the trigger to catch. The trigger spring might be too weak (I suggest replacing it anyways since you did a spring replacement).

2) The spring is simply too long. When it is fully compressed, it is still too large and won't let the plunger catch. This means your plunger isn't travelling the full distance it should be--the size of the compressed spring is longer than it should be.


Thank you. Also, do you have a crossbow? What spring do you use to replace the old spring? What ranges do you get? Do you need rubber bands or bungee cords to obtain the huge ranges that are bragged all the time? How accurate is it? Thank you for your replies.
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#4 six-five-two

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Posted 31 May 2007 - 05:10 PM

You can you bungee cords or rubber bands, although I have never done it because if you don't put it on right, it can cause a lot of stress to the charging rod, bending or breaking it. So I've heard atleast.
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#5 OfAllTheNerf

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Posted 31 May 2007 - 06:18 PM

You can you bungee cords or rubber bands, although I have never done it because if you don't put it on right, it can cause a lot of stress to the charging rod, bending or breaking it. So I've heard atleast.


First of all, I agree. Second, you really don't need to change the spring; the spring is not "too weak" just use bands or mini bungees. I can get 100-130'+ with a good dart. That's with no spring replacement. And yes, it causes even mroe stress when just cocking the gun, and even more when firing.

But yes, if it cocks with the Crossbow spring, the spring is too long and cannot compress enough to have the catch along the plunger rod connect with the catch.

Edited by OfAllTheNerf, 01 June 2007 - 03:09 PM.

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#6 Tsunami

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Posted 31 May 2007 - 08:29 PM

Everyone says it's too weak, and it's a lot weaker than my BBB (which has a replacement spring)
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#7 Gengar003

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Posted 31 May 2007 - 09:07 PM

I hear the spring from the Defender T3's Arrow Shooter is a good replacement for the stock Xbow spring. It looks to be the exact same spring in terms of diameter and guage, just longer. I personally think it's a pussy spring and that a crossbow should have something stronger inside, but it was one of the few replacement springs I came across (didn't look too hard, though) that would still allow the gun to cock - the others were, as has been mentioned, still too big when compressed for the plunger rod to catch.

Other'n that, bungee/bands. Bungees could look nice, I guess, if they match a custom paintjob or you find a crossbow-colored ones, but plain ol' rubber bands seem less gaudy and more universal to me. Personal preference, though. Not everyone has access to

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