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iMustBeCrazy

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Everything posted by iMustBeCrazy

  1. iMustBeCrazy
    Doh!
  2. iMustBeCrazy
    Yes.
  3. iMustBeCrazy
    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.
  4. iMustBeCrazy
    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.
  5. iMustBeCrazy
    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.
  6. iMustBeCrazy
    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?????
  7. iMustBeCrazy
    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.
  8. iMustBeCrazy
    You could try gluing the brass to a backing then when finished cutting soak it in the appropriate solvent to remove it.
  9. iMustBeCrazy
    A quick upscale:
  10. iMustBeCrazy
    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.
  11. iMustBeCrazy
    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.
  12. iMustBeCrazy
    Greg, I think you're pretty close. My estimation is that the shaft should come out to about the cylinder heads and that the blades are two and a bit (two and a half?) longer. The diameter is most probably a nice round metric number. Actually most of the measurements would be.
  13. iMustBeCrazy
    More detail on the engine:
  14. iMustBeCrazy
    Some more progress on the engine today. It should look like this (note, rear view): It currently looks like this:
  15. iMustBeCrazy
    And still not as scary as a 1909 Demoiselle.
  16. iMustBeCrazy
    Here we go again..... The Demoiselle came in three main variants, the 19, the 20 and the 21. I believe Santos-Dumont was only involved in the 19 and 20 while other third parties made versions of the 20 and 21. Santos-Dumont made changes on the fly, the 20 started with a V8 but was refitted with a two cylinder horizontally opposed engine slightly more powerful than the 19. Anyway, it's confusing. I'm drawing what I think was the latest 20 which I'm designating (unofficially) the 20d. It won't by any means be perfect but should be reasonable: The main bit are mostly done, just everything else to do. And I've started on the engine.
  17. iMustBeCrazy
    That's a very good question, somewhere in the 20's.
  18. iMustBeCrazy
    This was the first version of the '20' with the V8 between his legs (well almost) I think I'm doing the last version of the '20' with the water cooled twin (which I'm just starting drawing, luckily there's a patent with drawings). He re-used everything. It makes it really hard to work out if a photo is earlier or later.
  19. iMustBeCrazy
    Greg, I hadn't noticed this before: Anything look familiar?
  20. iMustBeCrazy
    Maybe. I have to move in the next few months so I'm not starting anything non digital. If/when I do it would probably be in 1:8 to match Camel and SE5a kits I have.
  21. iMustBeCrazy
    That's never a problem, sometimes the venting helps the thought processes. Doing anything Santos-Dumont can be painful. With the Demoiselle there are so many variations and copies with their own variations it's really hard to tell what's going on. (there, my own little vent )
  22. iMustBeCrazy
    I would probably try the brass as both the fins and spacers. Building in a jig is probably easiest, clean all the brass first, tack the first piece in place with tiny spots of glue, glue the spacers to the next piece then glue that to the previous piece, rinse and repeat. Slide a knife blade between the first piece and the jig to release. Blacken the whole thing then fit end caps. Yes, I drew it with the spacers glued to the previous piece, I think the other would be easier. EDIT, I really need to post faster.
  23. iMustBeCrazy
    Possibly, but realistically a bit early. I suspect it was to cut the spark to the engine, a kill switch, or probably a dead man switch, if he lets go (or falls off) the engine stops.
  24. iMustBeCrazy
    As I see it at the moment: The rear bracing convinces me that the foil does not rotate, therefore the 'rudder' is just a fin. The wheel is, in this version, non functional. Perhaps steering was done by leaning, that could work. I still think the lever is massive for a throttle but at this stage I can conceive no other plausible function. The video shows that the front foil is inadequate, probably the rear foil is too big and pops up first changing the angle on the front foil and preventing it from lifting leading to the changes aft.
  25. iMustBeCrazy
    Greg, do you have any evidence of a rudder? I can see what may be a rudder in the middle of the rear foil in the early version and perhaps aft of the hull in the later. If I'm right about the early version the entire foil must rotate to turn. I don't think the wheel was used for steering at least in the early version, I think the lever on the right was. It's too big for a throttle lever and a lever was how he steered his aircraft. I think the speed was controlled by 'blipping' the engine with a kill switch on top of the lever, this would be consistent with aircraft through WW1.

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