enginehistory.org

Hi everyone,

I asked this question in the "oil in sump during operation" thread, but didn’t get an answer, maybe nobody read this Crying or Very sad

So, I start another try, how did they prevent ...

I think, that's true

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

the fan wasn't a bad idea at all:

https://www.youtube.com/watch?v=9wb5YzVbTNo&ab_channel=Greg%27sAirplanesandAutomobiles

there was almost no power loss at high speed, butter better airodynam ...

Hi

the well known Ford GAA tank engine was derived from a V12 aero engine develoment (GAC). I would like to find out more about this intresting design, since it has some modern features like DOHC, ...

puplished in 1917, so it's about the really old stuff:

https://www.ajhw.co.uk/books/book61/book61.html

for the time, there are suprisingly many photos in good quality, also intresting to read

The center of the tool is not involved in the milling, the surrounding is cast geometry and only the washer area is mashined. I doubt that a countersink tool will give a better surface quality with it ...

I have to say, that idea is brilliant, I will keep it in my mind and might reuse it somewhere else in future... He deserved every penny for it!

the crankcases of radials are full of thread holes, therefore steel makes much sence. You can use bolts with higher strenght in steel thread holes which can save quite a lot of weight. You also get ri ...

actually, the cylinder head of the BMW 801 are made of an aluminum alloy wich is very corrosion and heat resistant and was used on motorcycles (the Boxer engines). I've been searching this alloy (I re ...

I took a look into my book (Kyrill von Gersdorf, Kurt Grassmann, Helmut Schubert: Flugmotoren und Strahltriebwerke) and found no direct information, but a section view of the BMW 801. The walls of the ...

Hi,

I'm from Germany, I send you an user mail,

Impressive presentation, I’m going to by the book... It is really very well researched. I’m sure, it was the last chance to talk with people which were really witnessing the development. It’s th ...

did the 4360 really have silver plated bearings?

According to the links above, the ZDDP content in older STP is very low (8 ppm) which is lower than the limit of 10 ppm (written in your link) for t ...

it might have nothing to do with the addetives, but with the viscosity. STP seams to be a very thick and sticking fluid (as seen in the Link), so it will help to prevent corrosion on the cylinder surf ...

ZDDP was once a common additive in engine oils for cars. Many older engines suffer from modern ZDDP free oil (e.g. the Chevrolet Small Block engines), but youre right, it has disadvantages. For modern ...