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Chaps,

Here's a picture from Hervé Ribet of his shoulder harness installation on his Z-1R Stummelflitzer.

I hope to see more of this exciting project soon.

Here's another view showing the upper harness restraint cable attachments.

March 23, 2007 - Head Rest Z-1R

March 25, 2007 - Empennage

Group,

Here's a picture of Hervé Ribet's Z1-R tailbay for the record.

May 5, 2007 - Engine-Fuselage Fairing

Group,

Z-1R builders note Hervé Ribet's oil tank (or oil tank + annular cooler) attachment brackets for the firewall. I have not shown details of this attachment on the drawings, merely indicating the position of this 6 or 8 litre tank. In all probability Hervé's design will be the standard.

Thanks Lynn. Are the holes in the bent over support tabs just lightening holes or is there a cunning plan to them.

Regards

Just lightening. There are three attachment holes to each of the bulkhead uprights. Don't know what size he's used.

Cheers,

May 20, 2007 - Engine-Fuselage Fairing

Group,

Here's Hervé Ribet's Z-1R engine ancillary cowling. The entire crankcase and cylinders engine will be external to this but it will contain the oil tank, starter generator, engine mount and so forth. It looks very impressive, I think!

Cheers,

May 29, 2007 - Pannier Tanks

Group,

First pictures of Hervé Ribet's pannier tanks for the French Z-1 prototype.

Great work! This project is really moving along!

Regards,

These panniers contain 17 litres each, ie. 3.7 Imp. gals. of fuel; slightly more than the 3.5 gals I estimated.

With the fuselage tank at 14 gals, this provides over 21 gals. The ribs are Klegecell.

Well done Hervé!

Here is a link to Klegecll foam. It has excellent strength properties and is impervious to moisture inc. oil/fuel, and flameproof.

Tschuss,

June 12, 2007

Group,

Here's Hervé's recent progress with his pannier tanks.

Lynn

June 15, 2007

Q: This is the first time I have seen these pannier type tanks. Could you give me some background info regarding their use. Are they just used to increase the Flitzer's range? How is the fuel moved to the main tank and how are the pannier tanks filled?

A: The panniers are specific to the Type R with the radial engine which has a higher fuel burn and whose installed shape provides a natural contour to the stringered fuselage cross-section. There are small differences to the tank design from the drawings on the Z-1R sheets, but Hervé has done an excellent job of interpreting the early sketches.

In the case of 'flat-sided' fuselaged types, such as the Z-2 and Z-3 which also require additional fuel capacity, use is made of the independent upper centre-section of the 44" chord three-piece upper wings of the Z-2, and the inner wing locations of the 39" chord Z-3 (with a two-piece or single-piece 'Bobka' wing), both these aeroplanes having a greater dimension between the upper wing spars for fuel cells than the 'standard' Flitzers, which have only 16" separation, including the Z-1R. Insufficient spar-separation on the shorter (36") chord wings of the Stummel makes useful fuel storage there impractical.

There is nothing to prevent the use of panniers on the Z-3 however, especially if a radial engine is installed, but it's more difficult on the Z-2, even with a radial, because of the low-cut port side longeron and large door located on the longtudinal CG, though longer, shallower panniers could be located below the horizontal 'drop-down' door hinge line.

The panniers are used to replenish the main fuselage tank once the main tank has used about three Imp. gallons of fuel. The idea is to empty the tanks via a dedicated pump (Facet 12v) one at a time, transferring some 3.5 gals. in one operation. These pumps are paired on a transverse support beam just behind the main tank. Non-return valves may be included in the system between the pannier and the pump. Full depth breathers allow pressure to be maintained. To increase reserve factors aerobatics are prohibited with any fuel in the panniers or with more than 7 gals in the main tank.

I attach some more pictures of Hervé's Z-1R tanks and a view on the upper longerons on the 'R'. Not that drawings may be subject to alteration.

October 22, 2007

Group,

This dramatic aeroplane is Hervé Ribet's Stummelflitzer Z-1R. It has the air of a Blériot-SPAD fighter of the late 1920s as it sits in his shop. I can hardly wait to see what it looks like on its undercarriage with its magnificent radial engine in place.

I've made a few cosmetic changes to the picture including a small adjustment to the wing root, trailing edge and headrest shape and added a typically French 'period' windscreen to see how it might eventually look.

November 3, 2007

Group,

Here's Hervé's engine/fuselage fairing which will contain many ancillaries including the 8 litre oil tank.

I can visualise the whole front end being metallised as planned for von Schmirk's Z-21B Habicht.

Group,

Here are a pair of photographs of Hervé's StummelflitzerType R forward fuselage which has been given a more curvacious cross-section to fair-in the pannier tank which is a little wider at the top than shown on the drawings. It results in a very elegant and vintage shape to the fuselage and the cabane struts are half-buried. If these struts are given streamline fairings the cabane drag will be reduced considerably compared to other Flitzer types.

This aeroplane is going to look as though it has leaped 'fully formed from the womb of time'!

Fantastic!

November 20, 2007

Here's one of the latest pictures of the French Z-1R Stummelflitzer cockpit showing the instrument panel cut outs. It looks like it will be well equipped for an aerobatic type.

Regards,

December 12, 2007

Groups,

Herewith more inspirational pictures: another section of metal cowl, this time Hervé's R2800 on the front of the Stummelflitzer Type R.

He says it's like a Warbird and who would argue!

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