Friday, December 31, 2010

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oil in the crankcase II

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Now for the final settlement of the plate separation of oil in the crankcase.

We have been a flat plate at the bottom board is not enough and that the curved plate, "embracing" the shaft is passed. So I propose a compromise. Hi-Tec Sutge.

begin, as usual, with cartons, looking a simple design to build sheet (flat plane) and that is above the oil level line and above the filter.

And this is the result:






see that saves the oil return line ...



... and the dipstick ...



... well be above the oil filter.




must be expected over the oil pressure lines, and secure the return of same to pan with enough holes. So we do chanante planes from the template made of cardboard.



see that the system is simple and consists of two plates, base and high, to be conveniently folded and attached to each other (we'll do it with rivets).



the moment, cut and apply the method of bending sheet Sutge ...



... making sure that everything runs smoothly and as planned, save the return line ...



... and the oil dipstick.





Now we apply to do drills, both on the motherboard ...



... plate as high.




Et voila !!!!!!







But that's not all, like Mighty Mouse said: "Do not go yet ... there's more friends!"

This invention does not solve the fact that the drainage channels of the cylinder heads are pulling a stream of oil from the crankshaft counterweights. Let us help.

The best way that we case is to mount a pipe inside the crankcase oil reconduzca to the base. We have used a copper pipe of the same diameter as the pipe that blew up in the cylinder head and cylinder (diameter 6mm) and 1mm thick, bringing the total diameter copper tube is 8mm.

will need to drill as conduits in the housing (in the cylinders and heads are not necessary). To do this we remove the stud that bothers us ...



.. and we cane gradually increasing drill bit to drill diameter, from 6 to 8 mm.




We can introduce the copper tube, which as it is very flexible, cost of entering an egg because it is rubbing against the canal walls, but that we are interested. We do not want to walk "dancing" in the groove.




The upper end of the duct in the crankcase as flare with a bit fatter. Thus, we can clinch the copper tube at its upper end, lest we fall.






And then you can bend the pipe inside the crankcase to our taste, taking care to not come to interfere with the counterweight of the crankshaft, which is why we have marked the path with pen in the walls of the housing.



built earlier
plate will help keep the tube in place and it will not kink. Thus, we opted not to fix the housing in any way.




We will play to cut the copper tubing to the desired height. In this case, the left over the board, allowing us to work better in the future engine maintenance.




And the result is chanante. Racing Sutge Pawa.



Wednesday, December 29, 2010

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redirecting oil in the crankcase

. Is known

the network a certain Pete Roper, famous and Australian Guzzi mechanic for more signs. Of this bird first became aware of what he has called "windage Plate." Let's see how they explain ... The housing

of Guzzis, the crankshaft rotates the whole nut in a soup made by oil, as there is no physical separation between the rotating shaft and the base oil, as it occurs in engines that open vertically (eg Ducati or Morini). All elements of the crankshaft (balances, crossheads ...) spinning at high speed causing a stream (windage) that pulls the base oil in the crankcase, which resists the rotation of the crankshaft itself, apart from producing a "shake" very good oil not know if it will be.

Here's how, in a Morini engine, crankshaft below is a joint board to each crankcase, on a circle, which will make the movement of engine components do not "raise" that contains more oil down the housing.

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The case is Roper's original idea is to try to physically separate the crankshaft oil through a metal plate on the board of the sump.

might think that making it (making it a more or less dry crankcase as the crankshaft) we have problems with lubrication, as they lose a certain cloud of emulsified oil, but that does not. You have to think that ALL elements of the Guzzi pan are greased by a circuit pressure (bank, stud, camshaft, pistons even base) so do not lose anything.


With that idea, we armed ourselves with a metal plate, a dremel, drill and a drill ...



... and we get the mess.




But half slaughter and we face many uncertainties.

oil filter relief valve circuit bother us.

If we insert the dipstick, we see that the engine oil level (when stationary, of course) is above the board of housing, that is, over the plate you want to install. Vale with the engine running the lower level, but ... both?




also oil drain out of the bearings will have to return to the bottom of the pan, out of the way and pick you up again the pump, so you have to drill holes ... how?


And then there is the drainage ducts of the cylinder heads, which run parallel to the career of the cylinders, and enter freely into the crankcase top, a direct stream into the spinning crankshaft counterweights ...




Total, before finishing the task and we spent the next evolution. Sutge's way. Let

. Why not make a circular plate that "hug" to the crankshaft in its rotation, the Morini engine style? You may also make long enough to prevent the "drains" from the heads go against the crankshaft ...


The first will draw on the housing front wall of the path of the counterweight of the crankshaft and connecting rod heads to be saved ...



... staying magnificent lines ...



.. with which they take some templates.




Then play "cortaypega" with some cardboard, zeal and enthusiasm.




We see that extending the "invention" prevents the drain pipe from the heads interfere with the rotation of the crankshaft.




completed the task ...



... and such that we have something like that.




But now the problem that arises is: how to build this with a simple sheet? And of course, comes the affright and turning back ... an intermediate step, not so sophisticated but, as discussed at the next delivery, well chanante.

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