DH, CSU Manual

CSU AY 5100

Hi all.

Does anyone know what an AY 5100 (25L/3971) is used on?

[ATTACH=CONFIG]259047[/ATTACH]

[ATTACH=CONFIG]259048[/ATTACH]

Cheers.

Hello Mark

Thanks for the post I already have a copy of that CSU manual but its only a general thing and not a specific overhaul manual. Its on my computer if you would like a copy.

The hydromatic props use a different type of CSU I am afraid.

Thats a good site for manuals but a bit pricey.

Ken

.
I’m not sure the CSU’s for the Gipsy Six and small engines would be the same as the hydromatic props in any case.

I collect original DH engine / airframe manuals and have 3 original prop manuals:
The de Havilland Hydromatic Propellor – Service Manual
& the de Havilland Hydromatic Propellors – notes for pilots and ground staff,
neither of these details the types of CSU’s by model.

The de Havilland Controllable-pitch airscrew constant speed (spring and pressure operated types – Service Manual.
this one doesnt cover the CSU’s at all because it refers to:
The de Havilland Controllable-pitch airscrew – constant speed control unit – Service Manual. “available from the Stag Lane works”.

My DH Engine Manuals dont seem to cover the CSU other than in general terms:
Gipsy Six (series I) – no mention
Gipsy Six series II – mentions “optional extra equipment” for oil system modification and governor fitted for use with DH constant speed airscrew
Gipsy Queen II calls up the BX series
Gipsy Queen III calls up “fixed pitch of approved design”
Gipsy Queen 30 – doesnt address the prop CSU at all?

I have multiple copies of the Gipsy Six (series I), Queen II etc, with some carrying additional sections or leaflets/booklets covering starter motors, magnetos, fuel pumps etc, none cover the CSU’s?

The elusive CSU manual from Stag Lane referred to above seems to be where all would be revealed?

google yields the following:

http://www.lindbergh-aviation.de/WebLindbergh/kataloge/Katalog_21_Manuals.html

This seems to be a current catelogue of books for sale?

this book seems to be what you are looking for??

de Havilland Controllable-Pitch Airscrew Constant Speed Control Unit
Instructions for the Installation and Operation
Undated original manufacturers manual, ca. 1935.
Original company folder 42 Seiten many illustrations outside used appearance, inside in good condition.
Hatfield, Herts, England 1935 The de Havilland Aircraft Company Limited
85,00 Euro – Best.Nr. 3262

& Ken FYI the same site lists the following
(even though my CD copy is on its way to you)

Care and Maintenance of the de Havilland D.H. Gipsy Six Series II. Aero Engine
Rare original company manual.
Very well illustrated, comes together with an “Addenda” which are amendments to the Engine Handbook, which contains 5 additional technical fold-out drawings.
Contents:
Specifications and Leading Particulars
List of Illustrations
Introductory
Description
Installation and Storage
Starting and Running
Dismantling for Overhaul – Inspection – Reassembly
Recommended Maintenance Schedule
Original company folder 38 Seiten with 14 + 5 plates and fould-out diagrams, one in color (lubrication details) outside used appearance, inside in very good condition.
Hatfield Aerodrome, Hertfordshire, England 1936 The de Havilland Aircraft Company Limited
140,00 Euro – Best.Nr. 3263

contact details?

Postanschrift: Antiquariat Lindbergh
Flugkapitän Peter Klant, Reinhardswaldweg 28, D-64546 Mörfelden-Walldorf
[email]peterklant@Lindbergh-aviation.de[/email]

regards

Mark Pilkington

Just found in amongst my poop:

AP1538D Part 2 & 4 DH Hydromatic Variable Pitch Propellers MAJOR REPAIRS
Its not amended but do I have up to AL85 loose (BIG stack).

AP1538D Part 3 DH Hydromatic Variable Pitch Propellers Schedule of Fits, Clearances & Repair Tolerances.
(unknown amendement level- but looks like 15)

This only seems to cover the AY and BY series upon a quick scan at the schedule listings of section 2(Constant Speed Units).