iMustBeCrazy
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Everything posted by iMustBeCrazy
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Tim, I get it as 89-90° to the keel (leaning aft if 89°).
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You can try sitting her on coloured paper to get a feel for how it looks. If you go high gloss it's going to have to be perfect, if you go satin finish it will be more forgiving. That said, I'd probably try a gloss black. Another option might be a diorama type sea (just the top of the plinth) with her floating above.
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That's a tough question Tim, it all comes down to taste but it sounds like you're not convinced. Myself, I feel that there's too much wood and too much straight grain. I think a black marble (or faux black marble) would add elegance and contrast. Otherwise a heavily figured wood, something complex and contrasty. My tuppence anyway.
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Bill, Cutters were traditionally of clinker (or lapstrake) construction. The launches, long boats, barges, pinnaces, and yawls, are carvel-built; and cutters, jolly boats, galleys, gigs, and life boats, are clincher-built. Also Cutters of a Ship, (bateaux, Fr.) are broader, deeper, and shorter than the barges and pinnaces-, they are fitter for sailing, and are commonly employed in carrying stores, provisions, passengers, etc. to and from the ship. In the structure of this sort of boats, the lower edge of every plank in the side over-lays the upper-edge of the plank below, which is called by ship-wrights clinch-work. Yawls, (canots, Fr.) are something less than cutters, nearly of the same form, and used for similar services ; they are generally rowed with six oars.
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A bit more, oil separator plugs and leads: And a comparison with a real (later?) one:
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I don't blame you. I've spent about eight hours trying to draw a plug lead. 🤬
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Ok, lets try this again: In this photo we see lots of oil pipes, we see the oil pump (or is that pumps?) at the rear of the engine with pipes coming out the top and bottom, we see an oil line running under and going into the front of the engine and into the prop shaft. In this photo we see a crankcase vent (fuzzy closest to the camera) and a junction block (mid engine) connecting a fuel line, coming from the rear of the engine, with the fuel lines going to the cylinders. This photo showing the crankcase vent tied it all together. This photo shows the oil pump (rear right, note the wide belt) better and a water pump (front right). EDIT: I think it shows the oil pump and fuel pump (together) and the water pump.
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You can see that in the shot above. I think William nailed it. Now, the only other shot of the tube I can find appears to have a narrower tube coming out the front then up. Tilting the head to the left when viewing helps.
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I certainly can't say for certain, they could have changed anything. The engine was designed with 'fuel injection' I put that in quotes as it was a continuous spray system spraying all cylinders at once, when the inlet valves were sucked open fuel and air were drawn in. I assume throttle was by controlling the amount of air.
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Not by me, I'm certain that it's two tanks with the coolant to port of the fuel tank. It has a conical bottom like the fuel tank and is probably 'tear drop' shaped (like an aluminium mast). It shares the fuel tank mount. Meanwhile I've found a new puzzle.
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I'm not sure but I think what you're seeing might be the body of the device, it's really hard to tell. Anyway, I can't find a definite oil pump on any of the Antoinette engine images, it is probably internal. See post 241. The pic above I interpret Lets start from scratch, there is a journal (a path for fluid) through the block running the length of the engine above the camshaft. It is always seen with a copper pipe attached. This would have to be for fuel or oil. I now believe fuel. Near the connection there is an aluminium block with a brass 'nut', I think this is a regulator. In the above pic the pipes also go to the dash, I'm guessing to a priming pump so as to get fuel to the cylinders before the fuel pump is turning. This is still common in aircraft. There is a tap into the journal mid engine (V8) with lines going (apparently) to the injectors. Which again suggests fuel. Why am I bringing this up? Well with the magneto on the aft end of the engine there is no room to get pipe into the journal at that end so either all the fuel plumbing is external or the fuel now goes in the front and perhaps the fuel pump is there too. But then what is the belt driven device aft?
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I thought so but boy do I have a curved ball for you, what if they turned the whole engine around? It was designed to be able to be run backwards. Lets ignore that for the moment and stick with what we know. On the aft end we have a magneto, a water pump and another belt driven device (probably a fuel pump but we don't know). The magneto must be gear driven using the same (type and size) gears as the camshaft. On the forward end we have a possible pulley (?) driving possibly another pulley (??) driving another device. We cannot see crank or camshaft gears but they may still be there. Coolant (most likely) comes down from the header tank into the 'Y' manifold, into the top of both radiators, out the bottom of the radiators to another 'Y' manifold, along the hull to the back of the engine and up to the water pump, out both sides of the water pump to the lower cylinder manifolds, out the upper cylinder manifolds to two 'T' joints (a guess) and back to the header tank via the two bent pipes.
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Keith, these are crops from pics in post 221. I think it's fairly obvious from the outlet that this is a water pump, not fuel or oil. And the double cross pattern here is the same but it has been rotated so the outlets are horizontal.
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Now, bear with me I've just woken up so I might get some of this wrong. The prop, I think, is driven directly off the crankshaft. The gear on the crankshaft has 32 teeth, the gear on the camshaft has 64 so the ratio is 2:1. It's a four stroke. It's easier to see in this V8 pic (and you can count a quarter of the teeth on the v16 and get the same result): Then I found this: The Antoinette engines used a primitive type of direct fuel injection. A belt-driven fuel pump at the rear of the engine fed fuel into a small reservoir (injector) located above each intake valve. So it needs a fuel pump as well as an oil pump and a water pump. Or is my 'oil pump' a fuel pump, I still need to check but I don't think so yes it probably is.
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Ok, I think this nails the water pump. The "I don't know" may be a booster pump given the extent of the plumbing and the height of the header tank. Maybe. The ?? (post 215) may be a gear driven oil pump moved to the front. Just a guess. The top pipe from the radiator 'Y" manifold could go to the water pump or the lower cylinder manifolds. In the top pic it looks like the water pump feeds the lower cylinder manifolds. EDIT: Sounds like I mostly agree with William.
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The red arrow is pointing to the camshaft drive gear, note that the pipes to the radiator join behind it and go up then bend back to run along the top of the block.
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Greg, The Demoiselle had a coolant header tank there so I suspect that's it. So, from the header tank through the radiators to the water pump through the lower manifold through the cylinder jackets to the upper manifold and back to the header tank. Demoiselle below.
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I've been trying to nut out what's going on up front, and failed. Having the water pump aft was normal on the V8 and having the magneto aft helps keep it out of the spray. But what ? and ?? are I have no idea. There's not much space for ? to be a pulley and ?? could be gear driven so why would you need a pulley?????
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The progress is a little more visible this time, I've added a cam housing, cam shaft and cams, cam followers, a water pump and a magneto. I've also moved the oil tank to the side and done some stupid things we're not going to talk about.
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You could try gluing the brass to a backing then when finished cutting soak it in the appropriate solvent to remove it.
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A quick upscale:
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Not much visible progress, I built the intake manifolds and piping (you can see one, rear right, in the second last photo. And that's a real crankshaft: I found some more photos of a 40hp Darracq, very close to the one used. I was wondering how they moved the Oil Tank and Pump to clear the bamboo longeron, now I know.
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Ok, I've averaged 4 photos: They come out as: 2.1:1 2.0:1 2.0:1 2.1:1 So I'm guessing 2:1. These photos are not to scale so don't read anything else in the numbers. Greg, note the clearance between the prop and the hull in the last shot when considering the diameter.
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