Ayden Crequer

Ayden, found me through my website, lives in Christchurch and works as an engine and frame engineer at Air New Zealand. He was very interested and asked if he could come and look at the fuselage and the engine. So today he came.
Ayden was very impressed with the Velie engine, and the quality. One of his colleagues is prepared to do a Non Destructive Test on the crank shaft and the con rods. I am a little reluctant to take all of that apart because it looks so good, no movement in any of the bearings and pins. But on the other hard I would like to do the tests. So will talk with him soon.
Also the fuselage made him jealous. He loved it !! 🙂

Disassembling magneto’s

Been away last weekend so nothing done !! But this weekend I started taking apart the carburetor and the two magneto’s. One of the magneto’s was mechanically “locked” but after taking it apart I noticed dried up oil on the rotor, so after cleaning that at tuned around beautifully.

I need to get grease for my grease gun, for the bearings, so I can start putting it back together and see if it still makes nice sparks!

Crank shaft out

Continued for a few more hours today. Turned the engine around and stated working on the front side. In the photo on the left, I have just taken of the thrust bearing cover off. On the crank shaft , you see the green front bearing nut, and the little strip screwed on top of the shaft, the propeller hub key that stops the propeller from slipping. You also see the thrust bearings just behind the green nut.

After taking of the nut, the key and the thrust bearing, in the photo on the right, you see the second bearing.

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To the right you see the inside after taking of the crank case cover.

 
Below, after moving the crank shaft backwards and forwards, I moved the con rods for piston 1, 2 and 5 through the cylinder 1 opening, as a preparation of taking the whole assembly of crank shaft + master con rod and the 4 remaining con rods out of the crank case.

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All out !!!!

Easy 🙂

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Amazing quality

I AM VERY IMPRESSED WITH THE QUALITY OF THIS ENGINE !!   VERY HAPPY WITH IT !!!

Been working on the back of the engine today. On the left you see the “thing” that holds the 2 magneto’s. Behind the big hole is a coupling that can be used for adding a starter motor.

Photo on the right is what’s behind the green “thing”. On the left you see the coupling for the optional starter motor.

I am thinking of getting an alternator for charging a little battery to power the radio, avionics and maybe lights. To the right you see the two magneto drive shafts. Really nice looking gears !!!!

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About to take the gear case cover off 🙂

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What you see here is at the back of the gear case cover. Its the cam. Its going twice as slow as the crank shaft and the 3 lobes that control the 10 valves.

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Here are the 10 valve lifters and rollers. Also one of the 3 roller bearings is visible here. That will come out so I can start taking the crank shaft out, maybe tomorrow ………

4965684_origThe whole idea is that crank shaft and the 5 con rods are going to be X-ray’ed just to make sure they are all OK.

Prop hub and mags off

Just before going to work, I quickly tried to get the propeller hub off. I tried it yesterday but didn’t know how to. Last night looking at the drawing of the engine, I suddenly had a thought….

And I was right.

Easy (-:

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And after work took the 2 magnetos off. Just in case you don’t know what that is, its making the sparks for the spark plugs. There two for powering the two spark plugs for each cylinder.

As Jack said, one of the mags was not functional. That’s right, the right one seems mechanically stuffed, not moving. So will open it up when I am ready and find out. The left one rotates nicely and as shown in photo ( below right ) the contacts are nicely moving.

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A bit apprehensive

Here we go;

The engine.

I am a bit apprehensive, never worked on an engine before. This will be great as it’s a basic and simple engine. This is the kind of engine I always wanted on my plane 🙂

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The valve rocker arm and push rod:

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Something would have been at the bottom of the carburetor. Probably some forward facing air inlet, so not to hard to make. At the top of the photo, between carburetor and the engine housing is the carburetor adapter. Looks like its some kind of heat exchanger, as it has two tubes on either side that are internally connected but don’t interfere with the air – petrol mixture going up into the engine.

Left, rocker arm removed.

Below the carburetor hanging from the bottom of the engine.

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Left the oil sump, in between the two bottom cylinders.

Right (a bit blurry) the position of the oil sump, the oval hole, and “behind” it the round hole for the carburetor.

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Left the first piston, with the 3 cylinder rings, two “normal” ones and one “double” one.
The piston pin left, was easy to push out.

Below one of the 4 con-rod’s (connecting rod). The 5th one is the master con-rod that is connected to the #1 piston, in the cylinder that’s on top of the engine.

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Below a cylinder and the intake tube. Sort of looks a bit messy on the photo here, but it looks really good. As you can see, I will have to make some gasket’s here.

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One cylinder left, the number 1 cylinder that has the master con-rod on it.

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All cylinders are removed now. So far it has been going really well, very happy with it, all nice and clean, and no problems up to now !