List of DB 605A engine construction numbers?

[schwarze-man]

Originally Posted by newcomer

In the book "Messerschmitt Bf 109, The Yugoslav Story, Operational Record 1939-1953, Volume II", by Ciglic, Savic and Micevski, in the list of Yugoslav AF register of Bf 109G, page 188, for the two-seat Bf-109G YAF s/n 9943 had DB 605 V13.

Thanks for that. These details are interesting, especially if there is an explanation and photo's of the plates. Cheers

SM

[schwarze-man]

Further to my posts #68, 69 and 70, I have further considered the apparent lack of low numbers from a xxxx ( up to 9999) Block. If the first 2,000 or so numbers were allocated to DB600 production, this would leave still leave 8,000 odd numbers unused. I do not think I have the evidence for the use of these numbers in this data. 8,000 would be nearly 80% of DB601A production. Plus the fact that the other engine numbers already add-up to the known production of DB601A, and also the DB601 production figures of all types. There are no "holes" in the production numbers. Now, there could well have been some carry-on numbering after the DB600 production, possibly before the full scale Block numbering was introduced. Maybe numbers were initially split in 5,000 Blocks, Marienfelde with 1 to 4999 and Genshagen with 5001 to 9999 ? I simply have no information about DB600 engine numbering. Overall though, if more than a few DB601's were produced with low numbering, there are two points: First, the total engine numbers from the overall engine numbering data would show it and, secondly, the low numbered engines would appear in the data in a statistical ratio, but they don't. Cheers

SM

[Dénes Bernád]

Just a general note. I am happy someone is looking, in details, at the German engine manufacturing and construction number sequences, as I feel this is a neglected topic, which should also be researched, not only the airframes. Thanks to all involved people, particularly to SM. I hope you will share your findings with us one day.

[schwarze-man]

Thank you Denes. It is great that Matti was able to donate his resource of 750+ Bf109 airframes and engine numbers. I am not sure if any better record exists. Due to the complex and convoluted way that the later DB605 and DB603 engines were produced, I am certain that examination of those records will involve some contradictions and questions. However, I do think that some similar patterns will be revealed. Cheers

SM

[schwarze-man]

For the next stage of my analysis I am considering the engine numbers and production of the DB605A and B series, including the AS and AM types, as far as can be deduced. This is a somewhat complex topic, working with approx a 1% sample of numbers. The period includes the complications of Allied bombing disruption, wide dispersal of production, possible Axis jumbling of engine numbering, the introduction of the DB605D series engines and the shortage of production data for 1945. One other complication is the effect of DB610 engine production. The DB610 was a "Double" engine, consisting of a pair of DB605 engines on a common reduction gearbox. To suit the vibration characteristics of the paired engine, the component engines have a different firing order than a standard DB605. Also, the righthand had a mirror image rear gearhousing and supercharger etc, to suit the air inlet on the RHS. Now, after the curtailment of the He177 bomber programme, some spare DB610 engines were rebuilt as DB605A or B engines. These engines retained their different firing order and they have distinctive red painted instructions on their cylinderblocks to show the revised firing order for the mechanics. I will lookout for any evidence of these engines in the data but, I do suspect that they were re-processed back into the numbering system and may not appear as such? I would be grateful if anyone has more info on the Ex-610 605's?
To start, I am going to review the DB605 production plants listed in the BIOS post war report on Mercedes-Benz. Cheers

SM

[Dénes Bernád]

I would suggest to compile a table with ALL DB 605 engine manufacturers, their location, three-letter factory code and - possibly - the Werknummer sequence allocated to each of them. That would be a great support for further in-depth research.