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#4462276 - 02/21/19 07:47 AM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Hmmm - nice theory but no - it was to reduce the amount of airflow into the rear of the fuselage and prevent structural damage.

The Fokker DR.1 was new in service and was flown by Heinrich Gontermann.
On the 29th of October 1917, Heinrich Gontermann took off in a Fokker Dr.I, Serial No.115/17. He had not yet recovered fully from a bout of dysentery. Nevertheless, he was anxious to try his new airplane, despite misgivings about it.
After a few minutes, he tried aerobatics at 700 meters altitude. He pulled out of the second loop and dived into a left turn. The upper wing collapsed and broke completely off. His airplane plunged into the ground.
Gontermann was pulled from the wreck alive, though with severe head injuries after slamming into the machine gun breeches. He was taken to the Jasta's medical bay, where he died from his injuries several hours later.
Some sources say his death occurred the day after his accident.
Gontermann was only one of several German pilots killed testing the new Dr.I. As a result, Fokker was accused of shoddy construction and directed to change production methods for the manufacture of the plane.

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#4462279 - 02/21/19 08:57 AM Re: OT - Cockpit quiz [Re: Sandbagger]  
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The upper wing collapsed and broke completely off.

Thanks SB, a familiar photograph. One thing I’ve never quite understood from the story, though, is if the upper wing became detached, how come what’s left of it (the cantilever box spar plus an aileron) is clearly lying on top of the wreckage?

#4462383 - 02/21/19 10:23 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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I suspect the leading edge (Plywood) and struts stayed attached, but the ribs, rear spar and linen covering went walkabout.


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#4462668 - 02/23/19 05:56 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Hi all,
Moving onto detailing the engine.

The cooling of the engine cylinders was carried out by cooled water from the radiator being fed by pipes to the water pump, located on the bottom, rear of the sump. This water was pumped through a pipe and through interconnected stub pipes at the bottom of each of the cylinders.
The water was then pumped up through the cylinders jackets and then out through the interconnected stub pipes at the top of each cylinder, from where it returned front of the engine and back to the radiator for cooling.
On the kit part the pre-molded coolant pipe for the cylinder jackets looks unrealistic, as it extends through and between the cylinders (which should be separate), presumably to form a solid fixing base for the cylinder block.
I've cut away the pipe completely and replaced it with plastic rod.

[Linked Image]

A magneto was located on each side at the rear of the engine. These were driven by the engine through a split drive shaft. Attached to each magneto were six ignition leads, which  were routed through support tube attached to each side of the cylinder block. Each cylinder ignition lead exited the support tube through an aperture and was then attached to the cylinder spark plug (two per cylinder). The pre-molded support tubes supplied in the kit seem under sized, so I replaced them with micro-tube. 

[Linked Image]

The sump of the engine was essentially a ‘wet’ sump, as the oil reservoir was in the rear and lowest part of the sump. The oil was drawn from this reservoir by the oil pump (located at the rear of the engine) and distributed through the engine, after which it returned to the reservoir to be recirculated. The forward part of the engine sump appears to have been open, as can be seen through the open apertures and the front of the sump in the following photograph. An oil contents sight glass was located on the sides of the oil reservoir at the rear of the sump. Some engine installations had an oil tank installed in the engine bay and outside the engine, although this particular kit does not have this feature. I've drilled out the apertures and created a sight glass on each side - the 'glass' will be made of PVA adhesive once the engine is built.

 [Linked Image]

 [Linked Image]

Next inline will be

Intake manifold nuts
Spark plugs (late type)
Fuel priming cups
Complete timing gear
Ignition leads
Engine controls

Mike

Last edited by Sandbagger; 02/24/19 10:31 AM.

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#4462698 - 02/23/19 09:36 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Hi all,
To enhance the engine detail I replaced the engines pre-molded locking rings for the fuel inlet manifold with the ‘Taurus Models’ engine intake manifold nuts (3211).

[Linked Image]

[Linked Image]

The kit does not have spark plugs to fit to the six cylinders (two per cylinder), however the cylinders do have a pre-molded location hole for the spark plugs.
The plugs to be used are from the ‘Taurus Models’ engine spark plugs (late type) (3204) set.

[Linked Image]

Mike

Last edited by Sandbagger; 02/25/19 07:16 PM.

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#4462723 - 02/24/19 01:13 AM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Mike some amazing after market add-ons are available these days it seems. I jumped over to Taurus Models web site to see what they offer and was quickly impressed.
For those interested, try this link: Taurus Models Web Site


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#4462961 - 02/25/19 07:14 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Hi all,
I decided not to use the 'Taurus' spark plugs after all as although they are good, attaching the ignition leads to the tiny end of the plug was difficult to do without leaving it looking unrealistic.
Instead I've made the spark plugs from 0.8 mm and 0.4 mm diameter 'Albion Alloys' brass tube with a 0.31" aluminium nut from 'RB Motion'.
This way the fine lead wire I use to represent the ignition lead can locate inside the 0.2 mm bore of the 0.4 mm tube.

[Linked Image]

The fuel primers for each cylinder are built using the 'Taurus Models' fuel priming cups (3219). They'll be painted when fitted to the engine.

[Linked Image]


Mike


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#4462966 - 02/25/19 07:37 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Mike;

making those miniscule spark plugs from scratch is a stupendous exercise in patieince given the fact you have to make so many. notworthy


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#4463259 - 02/27/19 06:21 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Hi all,

Rob:
They were tricky to make but not as tricky as the cylinder fuel primers!!

The engine is progressing although there's a way to go yet, not including application of the weathering effects:
Cylinder fuel primers
Fuel manifold and locking rings
Coolant pipes
Ignition leads
Oil filler pipes
Exhaust

The oil sight glasses were made by dropping PVA adhesive into the holes - it dries clear (good for making windows etc).

Mike

[Linked Image]

[Linked Image]


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#4463272 - 02/27/19 07:41 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Mike are you planning to display this model with an open engine compartment? That would be cool to see a mechanic working on it. I think this engine details would be a shame to fully hide or obscure given all the work you are putting into it.
No, don't tell me! I'm enjoying the suspense!

Best Regards;


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#4463344 - 02/28/19 09:28 AM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Hi Rob,
This engine is the test bed for the second Fokker D.VII and will be more or less covered by the forward fuselage panels.
The next engine will be visible when I build the second aircraft, which will have the internal structure and engine etc totally exposed
I know it seems senseless to cover the detail on this engine, but at least I know it's there,

Mike


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#4463610 - 03/01/19 08:33 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Hi all,
Well the engine is done.
There are details I've not added as this model will have the engine fully enclosed.
The second Fokker D.VII will have more detail as its engine will be fully exposed,

Mike

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]


[Linked Image]

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#4463638 - 03/01/19 10:54 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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I really like the serial numbers on the exhaust manifold pipes, and the beautifuuly fitted wiring harness work and copper fuel feeds. Very nice detailed work.

The weathering over all is top notch and reaaly gives a feel of a well used oily engine.

Another great piece Mike. I never tire of following your builds.

Best Regards

Last edited by Robert_Wiggins; 03/01/19 10:55 PM.

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Case: Cooler Master Storm Trooper
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Vid Card: ASUS GTX 980Ti STRIX 6GB
OS and Games on separate: Samsung 840 Series 250GB SSD
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#4463641 - 03/02/19 12:42 AM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Absolutely amazing work sir.

#4463646 - 03/02/19 01:41 AM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Mike, does the engine work? Wow!


"Take the cylinder out of my kidneys,
The connecting rod out of my brain, my brain,
From out of my arse take the camshaft,
And assemble the engine again."
#4463664 - 03/02/19 09:39 AM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Thanks guys.
It's not a runner at the moment as it has a bent valve stem - fortunately the crown of that piston is not damaged - I'll strip the timing gear down and replace it then it should be OK biggrin


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#4463666 - 03/02/19 10:24 AM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Ah yes, the life of an Ack-Emma.


"Take the cylinder out of my kidneys,
The connecting rod out of my brain, my brain,
From out of my arse take the camshaft,
And assemble the engine again."
#4463678 - 03/02/19 02:25 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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L'Etoile du Nord
.

daaaaaaamn. That engine looks so real I can almost feel the scraped knuckles as the wrench slips off one of those greasy bolts.

.

#4463684 - 03/02/19 02:53 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Ouch Lou, did you get a tetanus shot for it?


"Take the cylinder out of my kidneys,
The connecting rod out of my brain, my brain,
From out of my arse take the camshaft,
And assemble the engine again."
#4463715 - 03/02/19 06:51 PM Re: OT - Cockpit quiz [Re: Sandbagger]  
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Fullofit, with the amount of mechanical work and house projects I do, my tetanus shot is always up to date, as are my medical insurance payments.

.

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