The (new) Crosman Forum, your first and last stop for all things Crosman


120_2001r.jpg

Scot Laughlin's Custom All Weather 2260

2260 with short crosman receiver atop a mini riser made from aluminum tube. Barrel is a 2200 soda straw
tensioned inside a titanium golf club shaft. Three screw mod to the trigger, bulk co2, SSP 250 rear cocking
striker assembly. Factory stock, reshaped, bedliner finish and stick on cheek piece. The idea was a weather
resistant light hunter for rainy days.
I've got a Cothran stainless receiver and gas tube waiting for me to get back to this one.

 Return to Index  

Transfer port restrictions

June 25 2012 at 7:31 PM
robert  (Login gubb33ps)
Crosman Forum Member
from IP address 68.105.50.68

Restrictive transfer port.

OK..here is the data. Same gun, same valve, same everything EXCEPT striker springs were swapped. As striker energy increased, the sweet spot pressure also increased.

But the shot count stayed the same.

Spring #1
135 90BAR
10 shots from 620 590fps = 605fps averqage / 11 foot pounds

Spring #2
145- 100BAR
10 shots from 650 620fps = 645fps average / 12.5 foot pounds

Spring #3
165 110BAR
10 shots from 675- 645fps = 660fps.average / 13 foot pounds

SO, If I want a 12 foot pound gun....would running at the higer pressure level and restgricting the transfer port (so that the energy level was at 12 foot pounds) increase the shot count...or not?

 
 Respond to this message   
Responses

Crosman Corporation 1-800-724-7486

This forum is not affiliated with the Crosman Corporation in any way// Information presented in this forum is intended for informational purposes only; use at your own risk//Posts made to this forum are solely the opinion of the individual member