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Richard Braithwaite
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Everything posted by Richard Braithwaite
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Yes, remains to be seen whether I can achieve the required level of accuracy. Placement of the thole pins in relation to the oar ports is critical to achieving the required length of stroke. The following photos show the approach I used: 1. A jig used for drilling the thole pin mounting blocks to ensure that the hole is in the right place and angle: 2. Some pins installed on their blocks together with a jig for installing at the correct angle in the boat: 3. Installing the pin in position using the jig: 4. The pin in position: 5. Finally, a check on the clearances to give the required stroke angle:
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I've used lime pretty much throughout, mainly because the density is close to that of the pine used for the full scale reconstruction. Its quite a soft wood (compared to fruitwoods such as holly or pear), but that doesn't seem to have been too much of a problem and it has a very fine grain, which is nice..
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Before I embarked on this project I built a section model to see if I could fit machinery below the central walkway to operate the oars. This remains an option for this model which is why the canopy and internal hull structure is removable (see bolts in the above pics). The machinery is quite crude (I would aim to improve on that with the full model) but did demonstrate that independent control of port and starboard oars would be possible with machinery that would give an elliptical oar path with the right stroke length.
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There are 170 oars on Olympias. One of the purposes of the reconstruction was to demonstrate that that many oars could be operated effectively from a 37m long vessel...
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Several years ago (quite a few in fact...) I started building a 1:24 scale model of a reconstruction of an Athenian Trireme. The model is based on drawings produced by John Coats for building the full size reconstruction ("Olympias"). A number of trials were conducted with the ship in the 1980's, which have been published in a number of sources by the Trireme Trust. Well worth looking up. A fascinating example of experimental archaeology. I did have a blog running to record the model build (on this site I think?) but have not updated for a long time and I think it is no longer there. I have now reduced my working hours which has given me more time to progress the model over the last few months, so I thought it would be worth restarting the blog. I have just completed the framing for the canopy.
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