I have been looking at the airgun crossbow idea and thought that the cheap 50lbs pistol crossbows would be perfect for the job but how would these compare to a spring from an air rifle that fires... ummm.... around 600 fps at .177 caliber?
Would it be much stronger than a crossbow or weaker? i just don't know as i haven't had any experience with commercial springers.
Thanks. Hope you can help.
Comparing a pistol cross bow to an airgun spring
Well most .177 cal springers fire around 900 fps for a medium weight pellet and cock around 25 pounds. I'm pretty sure know what your talking about with the airgun crossbow but I haven't been around lately so maybe the idea is really different but the comparing the velocity of both designs without actually building one has lots of variables.
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There's no way I could cock the spring on my HW45 manually in a direct manner similar to those cheap crossbows, and that's only doing 4.5 ft/lbs or so. I think power wouldn't be too great.
This project was pretty tough to draw and the power wasn't much better than a cheap-o airsoft spring pistol...
This project was pretty tough to draw and the power wasn't much better than a cheap-o airsoft spring pistol...
hectmarr wrote:You have to make many weapons, because this field is long and short life
Actually the 80lbs crossbow is cocked using a lever at the back like this
http://www.superbows.co.uk/Archery/Cros ... d_465.html
Thats about 40kgs if i do it manually.
http://www.superbows.co.uk/Archery/Cros ... d_465.html
Thats about 40kgs if i do it manually.
Not neccasserily i've seen many under that.Well most .177 cal springers fire around 900 fps for a medium weight pellet and cock around 25 pounds
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Note that springers have a much shorter stroke than crossbows, and tend to use a wide piston. I would use a long narrow piston, and make sure that there is some sort of detent in the breech that keeps the projectile in place until sufficient pressure builds up to fire it.
hectmarr wrote:You have to make many weapons, because this field is long and short life
For this type of comparison, cocking "weight" is pretty useless without also knowing the associated draw length.
For example, my AA TX200 HC has a peak cocking force of about 40 pounds (although that can still be done with a single finger), and gets about 800 fps with an 8 grain pellet.
However, it has a very short 9.5" cocking lever and quite a short "draw length" to go with it. Which means the energy stored in the spring is fairly low.
Ultimately what that comes down to is that it's not really possible to compare without a lot more information than just draw weight.
For example, my AA TX200 HC has a peak cocking force of about 40 pounds (although that can still be done with a single finger), and gets about 800 fps with an 8 grain pellet.
However, it has a very short 9.5" cocking lever and quite a short "draw length" to go with it. Which means the energy stored in the spring is fairly low.
Ultimately what that comes down to is that it's not really possible to compare without a lot more information than just draw weight.
Does that thing kinda look like a big cat to you?
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It will certainly be cheaper than this, why not If the project doesn't work out you still have a crossbow...qwerty wrote:Ok, so i can't realy compare but do you think i should just go for it?
hectmarr wrote:You have to make many weapons, because this field is long and short life
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BLASPHEMY!!!
Looks like a 1911 on steroids, my pretty baby
Looks like a 1911 on steroids, my pretty baby
hectmarr wrote:You have to make many weapons, because this field is long and short life
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De gustibus non est disputandum, that's exactly what I like about itqwerty wrote:Its all big and stuff....
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Quite the opposite, after a traumatic experience in my adolescent yearsqwerty wrote:I hope not the same about women....
hectmarr wrote:You have to make many weapons, because this field is long and short life