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BrendaEM · 02-16-23, 03:17 AM

Well, here is the translated bore and stroke for various engines. It didn't do well with Roman numerals.

https://www-u--historia-com.translat..._x_tr_pto=wapp

Interesting:

"...A pair of Motoren-Werke Mannheim (MWM) RS34S (six-cylinder) engines were to be used as generators in the type IXd2 Uboats. These engines developed a power of 575cv at 750rpm. and had a bore by stroke of 260x340mm.
An engine almost identical to the RS34S, the RS134S would be fitted to the Type XXIII Uboats that began entering service in 1944. This engine gave the same power as the previous one but at 860rpm.

In both engines the crankcase and cylinder block were made of one piece. Each cylinder had two intake and two exhaust valves, a starting air valve and a pre-combustion chamber. This pre-combustion chamber could be electrically preheated to aid in cold starting. The engine had a valve to purge seawater that could accidentally enter when the uboat was submerged. ...."

260mm is a pretty big piston, my 10" guess was pretty close, 10.236220 Inches : )

02-16-23, 03:17 AM	#8
BrendaEM Mate Join Date: Aug 2022 Posts: 56 Downloads: 0 Uploads: 0	Well, here is the translated bore and stroke for various engines. It didn't do well with Roman numerals. https://www-u--historia-com.translat..._x_tr_pto=wapp Interesting: "...A pair of Motoren-Werke Mannheim (MWM) RS34S (six-cylinder) engines were to be used as generators in the type IXd2 Uboats. These engines developed a power of 575cv at 750rpm. and had a bore by stroke of 260x340mm. An engine almost identical to the RS34S, the RS134S would be fitted to the Type XXIII Uboats that began entering service in 1944. This engine gave the same power as the previous one but at 860rpm. In both engines the crankcase and cylinder block were made of one piece. Each cylinder had two intake and two exhaust valves, a starting air valve and a pre-combustion chamber. This pre-combustion chamber could be electrically preheated to aid in cold starting. The engine had a valve to purge seawater that could accidentally enter when the uboat was submerged. ...." 260mm is a pretty big piston, my 10" guess was pretty close, 10.236220 Inches : )