08-03-2004, 08:14 AM
On the 2" machines I got tubing that was 1" wall thickness. it was just enough I could have done with 1.5" wall thickness.<br>
I normally use nylon rope for the cord bundles except for my manuballista where I used polyester. The manuballista has longer rope bundles in relation to its diameter than other artillery pieces so I could use a stiffer rope. With modern rope you shouldn't use a stretcher because they are not as elastic as sinew rope. When they wrote stretch the rope until it is 2/3 its original diameter they mean you should stretch the rope until it is twice its original length. If you try this with nylon rope it will go beyond its elastic limit and will just stretch. The force will probably be too much for your frames as well.<br>
I have used modern materials because I have made my artillery for re-enactment purposes and in re-enactment you cannot afford to have artillery that doesn't work when it rains and where you need to take the rope off and soak it in a bath of oil every couple of weeks. In the roman army there was plenty of manpower to maintain natural ropes in the modern world there isn't.<br>
On a 2" I would use 10mm rope twisted and not braided as braided ropes are designed not to stretch. Put as much rope in as will possably fit and pull it as tight as you can by hand you don't want any strands which are loose as they will generate little or no power. I use a needle made of thick wire<br>
to help pull the rope through the gap. and wind the rope neatly as you can get more in if it is carefully layered.<br>
<br>
I didn't get to play with my machines as much as I wanted as I generally didn't finish them until just before the delivery date but I could get 100-150 yards.<br>
<br>
Alus Cladius Maximus <p></p><i></i>
I normally use nylon rope for the cord bundles except for my manuballista where I used polyester. The manuballista has longer rope bundles in relation to its diameter than other artillery pieces so I could use a stiffer rope. With modern rope you shouldn't use a stretcher because they are not as elastic as sinew rope. When they wrote stretch the rope until it is 2/3 its original diameter they mean you should stretch the rope until it is twice its original length. If you try this with nylon rope it will go beyond its elastic limit and will just stretch. The force will probably be too much for your frames as well.<br>
I have used modern materials because I have made my artillery for re-enactment purposes and in re-enactment you cannot afford to have artillery that doesn't work when it rains and where you need to take the rope off and soak it in a bath of oil every couple of weeks. In the roman army there was plenty of manpower to maintain natural ropes in the modern world there isn't.<br>
On a 2" I would use 10mm rope twisted and not braided as braided ropes are designed not to stretch. Put as much rope in as will possably fit and pull it as tight as you can by hand you don't want any strands which are loose as they will generate little or no power. I use a needle made of thick wire<br>
to help pull the rope through the gap. and wind the rope neatly as you can get more in if it is carefully layered.<br>
<br>
I didn't get to play with my machines as much as I wanted as I generally didn't finish them until just before the delivery date but I could get 100-150 yards.<br>
<br>
Alus Cladius Maximus <p></p><i></i>
Bernard Jacobs
Any opinion stated is genally not the opinion of My group or Centurian
Any opinion stated is genally not the opinion of My group or Centurian
