|Custom Projects / Custom Questions How do I customize? What do I customize? What do I use? Share you experiences and faults here!|
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|02-09-2012, 10:05 PM||#61 (permalink)|
I've porked many
Join Date: Apr 2006
Location: Yorktown, Virginia
If meat is murder, I'll have a beer with the murder please.
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|02-10-2012, 03:07 AM||#62 (permalink)|
Brass Monkey Customs
Join Date: Oct 2006
Location: Bowie MD
To increase velocity in bows, you must use pulleys, or decrease the tip of the limb weight or make it more aerodynamic. I will see if I can modify my weak bow to shot paintballs.
|02-10-2012, 03:13 AM||#63 (permalink)|
Join Date: Apr 2006
Location: Vancouver, BC
|02-10-2012, 01:23 PM||#65 (permalink)|
DSL is new here
Join Date: Aug 2009
Location: Barrington NH
I'd rather run with an air plunger, Mount it right behind the ball, put a poppet between them and set the spring strength so that the poppet opens once theres a couple hundred psi in the chamber. Basically running a cocker valve with the air going backwards. It would be more efficient to use a pcp but we're not using actual air so I dont think it would matter (though you could reduce draw strength if you did that).
So what if we're compressing the air at 30% efficiency, you wont make a bow design that can reach 300 fps spring velocity any more efficient.
WPI BS/ME '12 MS/ME '13
Gear Bag Sale!
Take my drop box referral and we both get an extra 250 Mb free!
|02-10-2012, 04:44 PM||#66 (permalink)|
Join Date: Feb 2012
Links relavent to your interests:
Common low energy crossbow found for cheap online, at yard sales, county fairs, military surplus, etc.:
Homotron Deal Of The Day: 80lbs. Pistol Crossbow, $19.97 - Homotron.net
Novelty paintball 'crossbow' with unknown (likely low) max shot energy/velocity:
Predator PR9000 Paintball Crossbow - Toy-Gun.com
Marshmallow Crossbow to serve as donor?
Marshmallow Crossbow | SportsVibe
Make it semi-auto while you're at it?
New self-cocking crossbow creating a buzz* - Outdoors - The Charleston Gazette - West Virginia News and Sports -
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