I would think a central groove or slit from end to end of the prod would be much better, in that it would not create specific weakpoints as holes or cuts would and spread the flex.Alster370 wrote:Would drilling holes or making cuts at the centre allow it to bend more easily?
Lexan for bow/crossbow?
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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Last edited by jackssmirkingrevenge on Tue Jun 28, 2011 6:16 am, edited 2 times in total.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Yeah, drilling holes a huge invitation for very violent failure. How well does a balloon work if you poke a hole in it? Those leaf springs are under lots of stress.jackssmirkingrevenge wrote:I would think a central groove or slit from end to end of the prod would be much better, in that it would not create specific weakpoints as holes or cuts would and spread the flex.Alster370 wrote:Would drilling holes or making cuts at the centre allow it to bend more easily?
There's other cocking method available. Have a look. A cocking rope could even help. A goats foot lever would also be effective. Have a look at the swiss twinbow as well. 300 pounds of draw weight, but it's one of the easiest, smoothest, and quickiest cycling crossbows.
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maybe you could heat it up a bit more to take some of the springiness out of the steel, Thats if it can fit in your oven.Alster370 wrote:My current setup is a leafspring, but its a bit too resistant for hand cocking and i dont want to have to use a winch. So i though about ways to reduce its resistance to bending so I can cock it with less force. Would drilling holes or making cuts at the centre allow it to bend more easily?
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Then the steel stops being springyCrna Legija wrote:maybe you could heat it up a bit more to take some of the springiness out of the steel, Thats if it can fit in your oven.Alster370 wrote:My current setup is a leafspring, but its a bit too resistant for hand cocking and i dont want to have to use a winch. So i though about ways to reduce its resistance to bending so I can cock it with less force. Would drilling holes or making cuts at the centre allow it to bend more easily?

Best option is to set up a cocking lever like the goat's foot, or carefully grind the spring to reduce the width, and thus the stiffness.
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that is probably the best option, also if you are going to go this route, remember to cool it regularly while removing material to prevent the heat from affecting the temperinonickname wrote:or carefully grind the spring to reduce the width, and thus the stiffness.
The voices in my head may not be real, but they have some good ideas!
Id have to rule it out since I don't have a bench grinder yet. 
Also they tend to be rather heavy, and im going for a lightweight design. One object I notice has alot of bend and resistance, is the shaft on golf clubs( junior ones more often) I believe it is graphite/steel?

Also they tend to be rather heavy, and im going for a lightweight design. One object I notice has alot of bend and resistance, is the shaft on golf clubs( junior ones more often) I believe it is graphite/steel?
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then make a slingshot rifle.Alster370 wrote:Id have to rule it out since I don't have a bench grinder yet.
Also they tend to be rather heavy, and im going for a lightweight design. One object I notice has alot of bend and resistance, is the shaft on golf clubs( junior ones more often) I believe it is graphite/steel?
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