GTA

All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: pcp_Dave on November 23, 2016, 10:20:31 AM

Title: buttons from Maccari
Post by: pcp_Dave on November 23, 2016, 10:20:31 AM

I see reference to "buttons from Maccari".
What are these?

Title: Re: buttons from Maccari
Post by: SteveP-52 on November 23, 2016, 11:05:10 AM

Small buttons tuners glue on a springer piston to help center it in the compression chamber to smooth out the shooting cycle.

http://www.airrifleheadquarters.com/catalog/item/251488/2365157.htm (http://www.airrifleheadquarters.com/catalog/item/251488/2365157.htm)

Title: Re: buttons from Maccari
Post by: SpiralGroove on November 23, 2016, 11:25:18 AM

Hey Dave,
+^scp52 said:
They appear to be made from Delrin Sheeting and are punched out about the diameter of a paper punch (cutout-> ;)).
They're "superglued" around the piston ends (3 per side; think 3 legged stool).  Their thickness removes most of the slop that would otherwise be around the piston as it travels inside the receiver/compression chamber.

They're used to increase shot consistency 8).