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German twin : Vac Do-335 nightfighter


Loic
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Guest Vincent

Hi guys,

 

thanks for the kind words :speak_cool:

 

 

@ Matt:

I will mold/cast the engine for sure as (if no better reasons) I need 2 for the Do 335.

I also think about what is coming in the future regard less if it comes from manufacturers or from my sick mind.

I will look for Vincent thread if I can find it.

 

@ Vaughn:

I have considered the 2 options indeed. The old Revell are no good I think, there are too many structural differences between the 2 engines (even if they look almost identical on pictures!). I will start from zero.

Will I sale some? I have not made my mind yet. Wait and see but keep in mind it may turn into a little piece of crap you will not want to spend money into...

 

@ Jason:

night fighters are COOL ! And a Do-217 would be as great as the design was crap (one of the worst NF in the LW) !

I am also very happy with the Uhu forthcoming release (Have a vac kit but this one is very intimidating!!)

 

@ Ron:

Can't blame you enough for that Ron... I forwarded you the bill, should be with you shortly...

Stop jocking: there is no problem as those 2 little wonders will look just great in my future Me-110 G4 conversion project :ninja:

 

@ Mikester:

The CMK DB-605 are really fine. If they are undersized, that is by very little.

The all point is that the DB-603 is a much bigger engine than the DB-605. It is like the Merlin and Griffon if I can say. So no issue with the CMK kit, it is just that they reproduce a DB-605 (which is what they are ment to do), not a DB-603.

 

I will normally start to work on the engines this weekend but I first need to buy some styren... lots off...

Thanks for following guys ;)

 

Hi

 

I somehow remembers from my research that the DB603 was a DB601 on steroids. They have the same crankshaft housing but thicker and deeper cylinder banks on the 603.... And of course the reduction housing is longer on the 603 as it was intented to be used with a combined circular oil/water radiator...

 

V

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Hi Vincent,

 

The DB-603 is in fact bigger in almost every aspect I after checking closely, I do not think there is any interest in starting from a DB-601/605 however good/accurate the base might be.

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Loic-

 

Wow- your work never ceases to amaze me. You are correct in that the -603 was bigger in almost all respects compared to the 601/605. I had started scratcbuilding one for a project many moons ago. You would be better off starting from scratch.

 

Looking forward to more updates.

 

THOR :ninja:

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Hi guys,

 

and thanks a lot for the kind words my friends :speak_cool:

 

I have been working on the DB-603 engine this weekend so here is a quick update ;)

 

I started to try replicate the big assemblies/parts of the engine first using styren in various size and shape.

 

We got styren : crank case and cylinders

DSC05548.jpg

 

Cut the bottom of the crank case at 120° angle:

DSC05551.jpg

 

Added the lower piece of the reduction gear box:

DSC05549.jpg

 

DSC05552.jpg

 

DSC05553.jpg

 

...

Edited by Loic
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...

 

Now with the cylinders:

 

DSC05555.jpg

 

Looks cool, ready for a dry fit test :speak_cool:

 

And then BANG !!

 

You know when we say measure twice & cut once, bla-bla-bla....

Well, I should add check twice you work with the right reference before you measure twice ...

 

I actually worked from a file I made from various pics and illustrations I found here and there.

I scale them myself and I screwed up the front view: biginers mistake :deadhorse:

 

I so have an engine which is basicly OK in lenght but overdone for all the rest (ie, the crank case was 3.5mm too wide and 1.5mm to tall...).

 

So I had use the dremell big time, sand, sand, sand and sand again until I managed to get back to the appropriate size... useless effort and pain, lots of wasted time... but now it is OK at least.

 

Here is the dryfit test with the corrected parts (pics are shot on sand paper as a symbol :BANGHEAD2: ):

 

DSC05556.jpg

 

DSC05558.jpg

 

DSC05557.jpg

 

...

Edited by Loic
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...

 

And then, the final batch for today with the rocker covers (not yet finished):

 

DSC05563.jpg

 

DSC05564.jpg

 

DSC05565.jpg

 

DSC05566.jpg

 

I hope it does somehow shows the complex curves of this engine as there are almost no straight lines in there but mainly gentle curves all around.

 

Hope you guys like it and thanks for following gents :speak_cool:

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Outstanding Loic, you make it look so easy! most of us would still be on attempt number four hundred to get that clean a result! Just like the rest of your Arrow, the DB is comming to life.

Excellent progress!

Wishing you the best on the rest of the engine block and details, I know there has to be hours of work alreay into it, but it's really paid off.

 

Paul

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Stunning work indeed Loic! To be able to work out in your head a method for building up the complex shapes involved is impressive. I wish I could do that sort of stuff, but I don't have the spatial acuity for it (or the talent!).

 

Great work my friend.

 

Kev

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Oh dear, you make creating a complex piece of casted machinery so easy...

 

 

...I had plans to build a Ford P68 once, but I chickened out by the thought of scratching a Ford DFV... :innocent:

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Thanks a lot guys, much appreciated.

 

I would not say it is complicated but trust me it is not "easy" either: my fingers and hand are really painfull from having to hold those tiny pieces, tools, sand paper/stick all the weekend.

 

Kev might have a good point with this "spacial acquity" thing. I actually started my profesionnal life as a CAD desinger and the thinking and approach are (amazingly !) very similar indeed.

 

Anyway, thanks for following :speak_cool:

It's time to go to bed here !!

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Loic

 

If you need more information on the DB 603 this CD-ROM from http://www.luftfahrt-archiv-hafner.de/ might be helpful:

 

 

 

CD-ROM

 

385 MB 64,95 €

 

Flugmotor Daimler-Benz DB 603 A

 

CD-Reihe „Deutsche Luftfahrttechnik“ mit ISBN

 

Technisches Kompendium, gesamt 1.550 Seiten, bestehend aus:

 

DB 603 A Handbuch, Werk-Ausgabe B, Motoren-Handbuch. Inhalt: Kennzeichnung, Beschreibung des Motors, Behandlungs- und Wartungsrichtlinien, Maßnahmen vor erster Inbetrieb-nahme, Flugklarmachen, Betrieb, Wartung, Motorstörungen und Behebung, Konservierung. 1942, 120 S. mit 41 Abb.

 

DB 603 A, Werksausgabe, Ersatzteilliste. Inhalt: Ausführungsmerkmale DB 603 Baureihe 1 und 2, Verzeichnis der Baugruppen, Übersichtstafeln, Motor-Ersatzteile und Ersatzteilbilder, Sachnummern- Gerätenummern- und Normteil-Verzeichnis, Geräte-Ersatzteillisten von Zulieferfirmen. Dez. 1942, 270 S.

 

DB 603 A, D(Luft)T3603 A, 1 u. 2, Motoren-Handbuch. Inhalt: Kennzeichnung, Beschreibung des Motors, Behandlungs- und Wartungsrichtlinien, Maßnahmen vor erster Inbetriebnahme, Flugklarmachen, Betrieb, Wartung, Motorstörungen und Behebung, Konservierung. 1944, 130 S. mit 58 Abb.

 

DB 603 Anleitung für Kontrolle, mech. Bearbeitung und Montage, Prüfstand. Inhalt: 1: Allgemeine Angaben für mechanische Bearbeitung, Kontrolle, Montage, Aggregatprüfungen und Prüfeinrichtungen. 2: Fertigmontage. 3: Motorenprüffeld. 4: Leistungsregelung. 1942, 720 S.

 

DB 603 A, Ausbildungs-Unterlagen. Inhalt: Motor, Luftschraube, Motorbetrieb und Einbau, 1943, 205 S.

 

DB 603 A-F, Werk-Ausgabe A, Vorläufiges Motorenhandbuch. Inhalt: Kennzeichnung, Beschreibung des Motors, Behandlungs- und Wartungsrichtlinien, Maßnahmen vor erster Inbetriebnahme, Flugklarmachen, Betrieb, Wartung, Motorstörungen und Behebung, Konservierung. 1941, 125 S. mit 36 Abb.

 

DB 603 A, E-F, Einbauzeichnungen, 2 Blaetter

ISBN: 978-3-939847-18-2

 

Best.-Nr. / order no.: LAH-CD-ROM-1019

Best Regards,

 

D.B.

 

(Not affiliated with Herr Hafner or Luftfahrt-Archiv Hafner.)

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