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A: Oil Pipework Oil capacity of Egli

TouringComet

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What is the oil capacity on an Egli? How full do you fill it?

My sight hose at the front of the tank is not too clear. I changed the oil, and filled it until a spoke inserted through the cap had a level about 3” from the bottom. The backbone tube is 4” diameter, correct? I assume a previous owner put the white zip tie on the tubing as a level indicator, but eyeballing it, it looks like it is roughly in the middle of the backbone tube.

image.jpg
 

Paul Coene

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Can't you see the level if you keep a strong flashlight against the tube ? The zip tie is indeed the OEM level indicator., not an invention of the previous owner. And there should be 2, indicating min. and max. level.
 

TouringComet

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So maybe my zip tie is at the min level?

The flashlight idea is good, but the new oil is pretty translucent, I can’t see where it is.
 
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Paul Coene

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It looks like it. Changing the oil (and filter), I needed 3 l. to reach the max. level.
And - I just checked it out - the recommendation by Patrick Godet was: don't put more than 3,5 l in the thank when changing, which was "the original recommandation of the Vincent factory"
 
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Paul Coene

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So maybe my zip tie is at the min level?

The flashlight idea is good, but the new oil is pretty translucent, I can’t see where it is.
Maybe you should wait until the next day. The indication will be sharper.
In a new engine, Godet used MoS2 (molybdeendisulfide) which turned the level tube black.
 

vibrac

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What is the oil capacity on an Egli? How full do you fill it?
The answer to the second part is as I have found "carefully" I have on occasions forgotten and it takes a lot of time to clean the head and underside of the result. Its not a question of funnels its a question of flow, the bottom of the oil hole is restricted, certainly on the last few "Egli" back bones I filled, Its just a 3/8" or 1/2" hole at the bottom of a half pint tube (do your own metrics) you just have to take your time. its a real pain.
 

davidd

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I was not aware that Patrick copied the original filler neck design for his frames. Non-Egli owners might be wondering what you are complaining about, but the early Eglis were designed with a very restricted filler neck, which seems to have been adopted for later frames.

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This is a shot of EV4's Filler neck. If you are too quick with the oil it will spill over and also it will run down the tank breather tube. This design was most likely done to minimize the loss of strength caused by piercing the 4" (100 mm) tube. It was certainly necessary on the prototype frame which was designed with very thin tubing. The use of thin tubing allowed the builders to work much faster and assemble the data necessary for the production build. The prototype frames were not designed for street use, although they may have been used for racing. I suspect that welding the filler neck onto the 4" tube did minimize some loss of strength and it was carried over to the production frames.

When building my own frame I made a 2" hole in the frame and slid a heavy gauge 2" filler neck in the hole and welded it up. Most owners are familiar with the welded bar in the UFM, so I made a small piece of SS and welded it to the bottom of the filler neck.

100_1583.jpg

When welded into the frame I slide a few 2 x 4s that position it at about 2/3 full in the tank. It is just a benchmark to gauge how full the tank is. The venting is done by the vented Monza oil cap that screws onto the threads.

100_1577_edited-1.jpg

In the photo, the parts are mocked up for the photo, so they are not in their final position for welding. I have leveling legs on the jig and I would use a level on the filler neck when tacking if in place.

I did not worry about the weight of the frame. Using slightly thicker metal did not add much weight and it should add some reliability.

David
 

TouringComet

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I found 50 foot rolls at the big box supply store, but instead went to one of the few remaining independent hardware stores in my area, and they still have reinforced plastic supply lines for sinks and toilets, most of their stock for that type of item is now stainless braided. With new tubing, and the new oil now darker after my ride yesterday, I can now see where the oil is.

IMG_3044.JPG
 

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