High-quality black-and-white photographs of large old machines and tools

[TSiArt]

I came across a Video on youtube of cold start after 45 years of Ursus C-45. Did more searching and I almost fell in love with it. I love it how the steering wheel is the start crank too.

https://en.wikipedia.org/wiki/Lanz_Bulldog

[Jon]

I came across a Video on youtube of cold start after 45 years of Ursus C-45.

Cued to cold start at 2:40:

[Frank S]

If you blow up the photo the block and hook are defiantly an added in drawing

[cmarlow]

The bumpers and chains on the rail car are drawn in too.

[PJs]

That's a big'O 2 stroke. "cylinder capacity of 10,300 cc" (628 Cu. in.). Wonder what the fuel was?

[cmarlow]

What I was told was crude oil, but I think they meant any sort of diesel or vegetable oil. Wikipedia says the Ursus 45 tractor was an unlicensed Polish copy of the German Lanz D 9506 Bulldog tractor.

[PJs]

What I was told was crude oil, but I think they meant any sort of diesel or vegetable oil. Wikipedia says the Ursus 45 tractor was an unlicensed Polish copy of the German Lanz D 9506 Bulldog tractor.

Yeah, I was thinking fuel oil because of its availability then and the 2 stroke. What ever it was it wasn't burning too clean...they were in a cloud in only a few minutes.

[cmarlow]

Yes, I was noticing the smokiness too. My safety sense was screaming about ventilation instead of asphyxiation.

You realize it is a hot bulb engine instead of a diesel engine. While a diesel ignites the fuel with compression heat the hot bulb starts burning the oil inside the hot bulb. Since hot bulbs do not need compression to fire they can run with less than 5:1 compression ratios. Hot bulb engines can burn almost any kind of oil as long as it is thin enough to get into the bulb on the intake stroke of the engine unlike diesels which have to be able to pump the oil into the compressed cylinder as a fine spray.

[PJs]

Yes, I was noticing the smokiness too. My safety sense was screaming about ventilation instead of asphyxiation.

You realize it is a hot bulb engine instead of a diesel engine. While a diesel ignites the fuel with compression heat the hot bulb starts burning the oil inside the hot bulb. Since hot bulbs do not need compression to fire they can run with less than 5:1 compression ratios. Hot bulb engines can burn almost any kind of oil as long as it is thin enough to get into the bulb on the intake stroke of the engine unlike diesels which have to be able to pump the oil into the compressed cylinder as a fine spray.

Yes I did. Hence the fuel oil thought as it's a relatively thin, low grade Distillate fuel and #6 (thinnest) runs vary sooty and would likely work in a bulb, especially once every thing warmed up. That was a pretty good size torch he used to get it started.

However my brain thinks of diesels as 4 stroke for some reason, although I know there are 2 strokes from way back...and that they are called Diesels because the burn Diesel. Wiki or other searches didn't say much about the kind of fuel this engine burned, so it guess and by-golly for me. Could have been Kerosene just as well back then but much more expensive and more of a premium in Poland I would think at that time.

PJ

[Frank S]

to minimize my usual spewing syllogistical thesis so I will stop here.
Ha ha I'll have to remember that one judging from the length of most of my posts