16 Joule valve

Joined: June 6th, 2008, 7:00 pm

June 6th, 2008, 7:00 pm #11

The 16 joule valve is the same one that is exported to the USA .

This replacement valve is meant to replace the standard "F" version (low powered )that is sold in Germany which is considered free to buy if marked ( stamped ) with the "F" .

Ted
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Joined: February 9th, 2008, 1:44 pm

June 6th, 2008, 10:45 pm #12

270 m/s = 885.826 ft/s so that one is a faster valve. But our 850 in .177 has a rating of 760 ft/sec. That's 100 fps more so it must be a different valve they have for sale or their numbers are off.
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Joined: June 5th, 2008, 5:51 am

June 7th, 2008, 3:32 am #13

Well I just checked the math...


It seems 16 Joule = 11.8 foot-lbs (fpe) http://www.onlineconversion.com/energy.htm

Then I found this handy formula:
http://www.pyramydair.com/site/articles/formulas/

If you plug 11.8fpe in there and say 6.94 grain for the weight of a .177 RWS
super-H-point you get 875 fps.

You need 30 Joule = 22 ft-lbs with that pellet wt to get 1200 fps.

Now how you calculate effective range I'd like to know....anyone have

a clue?
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Joined: February 9th, 2008, 5:05 am

June 7th, 2008, 12:38 pm #14

A next step on your journey to wisdom might be to check the web for the ingalls tables and/or exterior ballistics.
If you are willing to spread for $40+M&H, some ninety odd pages of data detailing your question and much more can be had by getting the FSI Airgun Ballistic Tables available at most airgun dealers.
Last edited by codger77 on June 7th, 2008, 4:38 pm, edited 1 time in total.
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Joined: February 9th, 2008, 5:05 am

June 8th, 2008, 3:21 pm #15

Well I just checked the math...


It seems 16 Joule = 11.8 foot-lbs (fpe) http://www.onlineconversion.com/energy.htm

Then I found this handy formula:
http://www.pyramydair.com/site/articles/formulas/

If you plug 11.8fpe in there and say 6.94 grain for the weight of a .177 RWS
super-H-point you get 875 fps.

You need 30 Joule = 22 ft-lbs with that pellet wt to get 1200 fps.

Now how you calculate effective range I'd like to know....anyone have

a clue?
Mark,
If you have not already found it, go to airgunexpo.com calculators. I believe that this site will give you all the information that you need to find your effective range. Good luck
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