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Old 01-14-2017, 10:56 AM   #71
Diving Gecko
Shooter & Shooter
 
Join Date: Nov 2014
Posts: 955
Re: Another Pneumatic recomendation thread

To answer my own question. Yes, the Italian modders seem to have gotten it wrong.
Cutting off coils and stretching the spring back will make it stiffer. It kinda makes sense as you end up aligning the rod in the spring more with the pin itself.

Also, I measured a Mares spring just now to be 0.6mm (diameter of wire) x 5.2mm (OD) x 14mm (length) with 9 active coils.
With this info, you could have some fun with a formula for how to calculate the spring constant of a compression spring or... you could just input the same data into an online spring calculator.
I did the latter and assuming the spring is made of 302SS, then the spring rate is 1.28N/mm. Cut off two coils and this increases to 1.64N/mm.

Viva Italia...;-)

Last edited by Diving Gecko; 01-14-2017 at 11:14 AM.
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