Merlyn wrote:Most interesting Andrew but you will not find the answer to my question in the workshop.
It was said to be very common occurrence caused by not decoking the engine.
The excessive backpressure, as shown by the gauge on the control panel clearly showed the fault.
The bar was used to get the broken part of the engine out, when it was done correctly, being made of carbon steel would make an excellent addition to your tool box.
A crosscut chisel jib
That crank, sure it's not a wrist watch crank?
Think about the back pressure load caused by excessive carbon build up on two strokes.
Yes Merlyn, you do not know how much I appreciate your remarks. because I know that I will not find them in the workshop manual ... It's good that you want to work with me with your experience. As you know, I do not have too much, because I thought it was a good thing.
You have noticed the excessive accumulation of carbon. Now that we have a new type of engine Feliks Commer, where there is no classic crankshaft, only pins with a diameter of 30 mm, we can approach the issue in a different way, as it was so far. These small plates do not need such lubrication as large crankshaft bearings, they do not even turn round, and do semi-turn .., so the lubrication can be a little smaller .. I do not know if you remember that two-stroke engines for motorcycles, are lubricated only with oil in the fuel and a ratio of 1: 50. And these engines, completely protruding .. so I thought that my Felix Commer can be lubricated with normal diesel fuel, also with the addition of this oil, let's also say 1; 50 as we know that diesel fuel has already been sold in the world. Imone would be in the engine instead of lubricating oil. Well, when 10 liters of such fuel are needed for lubrication, the amount of oil added would be smaller than that. No, I would think this would not plug the windows, because the rest would be the same as the main fuel, it would be fired without coke .. And I think this should solve the problem of this too nagar. Simply a new lubricant oil felix, ie diesel fuel plus 0.2: 1 oil for two strokes ... .. poured into the engine, instead of lubricating oil ..
It would have been so great that it would not be too dense, and the price would not be too high.
So with a large amount of "oil" you would not have to worry about ... because it would not be created ... because, from burning fuel, it does not arise ...
I just do not know what oil companies are doing ...
here, one bottle is enough to make 50 liters of "feliks oil"
https://www.mobil.com/English-PL/Passen ... -Racing-2T
And here the drift part of the watch, which I personally will do on an ordinary lathe. The material to do this crankshaft weighed 80 KG and the shaft lasts 4 KG. It lasted for a month ...
You know how you see the problems of crankshaft production, and that's why I know it's not a simple thing ...
Here are a few examples, however, that the crankshaft is not necessarily a successful construction, and sometimes its ends, and sometimes it ends ... And I will ask if ever seen such a broken clutch shaft, despite the fact that it is much thinner than the crank ..
http://new4stroke.com/rootes%20diesel%2 ... 0small.pdf