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CQB upgrade parts?

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#1 Warsong



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Posted 28 August 2013 - 07:58 AM

I have a CQB with what i believe is a version 1 gearbox ( no logo )
the cylinder head has a small leak around the brass so i want to replace it with a 2 gasket all aluminum part. there must be 100s out there. which one?
also my O ring around the piston head is very loose, so i was considering just replacing the entire thing.
last, my cylinder is the older long port design, id like to build a plinker not intended for human use. would a smaller ported cylinder work out and which one? thanks.

#2 niko_gpsy


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Posted 03 September 2013 - 12:11 PM

You can certainly change the cylinder head to an aluminum if you like but consider this for a moment.  In a given mechanical system where enegy is transfered through motion of various parts, failure of these parts down the road at some point is inevitable.  So I would think a fail safe point like a polymer cylinder head that would cost the least amount of money is best.  Would you ranther replace a $15 cylinder head or a $80 gearbox shell?  Metal cylinder heads are no good at absorbing such impact and thus transfers this energy to the front of the gearbox which can lead to GB failure.

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