snuff Posted February 4, 2018 Share Posted February 4, 2018 I damaged my piston in my CS upper gearbox so I need to replace it. Std gearbox any recommendations and any to avoid?...thanks//... Link to comment Share on other sites More sharing options...
Hangtight Posted February 4, 2018 Share Posted February 4, 2018 First, eliminate the cause of it being damaged. Then the ICS POM (the orange one), Cyma metal rack or SHS would do the job. Might as well correct angle of engagement while you're at it. Link to comment Share on other sites More sharing options...
snuff Posted February 4, 2018 Author Share Posted February 4, 2018 I'm the cause and it's quite old,I think it's just wear and tear. Go for metal/ali over polymer? Cheers for the advice. https://www.amazon.co.uk/Nylon-Polymer-Piston-Airsoft-TT0031/dp/B00AAZR8LO Link to comment Share on other sites More sharing options...
Hangtight Posted February 4, 2018 Share Posted February 4, 2018 Don't bother with aluminium pistons. https://www.ak2m4.co.uk/internal-parts/pistons/cyma-15-tooth-reinforced-piston-piston-head Gets the job done,doesn't break. If you do go for a piston with a full metal rack, don't forget to epoxy the rack in once you've ground the teeth for AOE clearance. Link to comment Share on other sites More sharing options...
snuff Posted February 4, 2018 Author Share Posted February 4, 2018 Thanks.. Link to comment Share on other sites More sharing options...
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