Late, but hopefully useful: Try anchoring the base to the ground. Also add wheels to the axles to act as "cams", lace them with rope. Use two people to pull the ropes to launch. Basically you're doubling the power (2 people pulling vs 1 pushing), creating a larger fulcrum with the wheels, and wasting less energy by keeping the frame locked down.
There's not a lot of info about traction trebs out there. 70 meters is pretty good, actually. You'd probably lose performance converting to a counterweight design. You could try different sling lengths to change the trajectory is you want to.
Well, with a traction treb the shooter is the counterweight. Do you think you could load your frame up with the equivalent of your body weight as CW? Also, your machine is interactive; you can apply the force more efficiently than simple gravitational pull on a CW.
Late, but hopefully useful: Try anchoring the base to the ground. Also add wheels to the axles to act as "cams", lace them with rope. Use two people to pull the ropes to launch. Basically you're doubling the power (2 people pulling vs 1 pushing), creating a larger fulcrum with the wheels, and wasting less energy by keeping the frame locked down.
jjbad12 2 years ago
Consider going halfway.
add some weights to offset the payload's mass, but no so much that it will put the loaded arm through a fireing motion.
angagaur 2 years ago
There's not a lot of info about traction trebs out there. 70 meters is pretty good, actually. You'd probably lose performance converting to a counterweight design. You could try different sling lengths to change the trajectory is you want to.
akitist 3 years ago
You think I'd lose distance by adding a counterweight? Interesting. Can you explain why? The physics behind these things is pretty fascinating.
RSammy 3 years ago
Well, with a traction treb the shooter is the counterweight. Do you think you could load your frame up with the equivalent of your body weight as CW? Also, your machine is interactive; you can apply the force more efficiently than simple gravitational pull on a CW.
akitist 3 years ago