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Roger Delon's Stable-Climate Hive (La Ruche Climatstable)
Roger Delon (1919-2007) was a commercial beekeeper in the Vosges/Jura region of France/Switzerland and is understood to have kept at least 600 hives in apiaries over a 120 km wide range. He was committed to the Warré box size, as his was only 5 mm higher, and to the principles of keeping in the brood nest warmth by adding new boxes underneath at the critical time. However, his hive and its management differs in several ways from Warré's as set out in the following table:
| Item | Warré (People's Hive) | Delon (Stable-Climate Hive) |
| floor | flat with 120 mm wide entrance notch; an alighting board | sloping down to front; rim; 45 degree alighting board; 300 mm wide entrance (full width); mesh floor for Varroa control |
| hive-body box | 300 x 300 x 210 mm box internal size; at least 20 mm thick walls; painted outside | 300 x 300 x 215 mm box internal size; 30 mm thick walls, dipped in creosote then linseed oil; painted outside |
| comb support | 8 top-bars with starter strips | 8 'semi-frames' with foundation; stainless steel rod round sides and bottoms of combs |
| comb spacing | template to space out top-bars while pinning them to rebate | castellated spacer strips |
| top-bar cover | cloth | cloth |
| quilt/crown board | 100 mm high vapour permeable 'quilt' containing moisture absorbing material, e.g. straw, sawdust, etc. | 30 mm high vapour impermeable insulated crown board |
| roof | mouse-proof gabled roof with ventilated loft | communal steel roof for up to 5 hives |
| stand | only one hive to a stand | communal, up to five hives |
| wintering | two boxes of comb | two or three boxes of comb; wrapped with black plastic sheet bound at the bottom |
| adding new boxes | underneath (except for sections) | underneath to start with; later on top in strong flows; and even in the middle of the brood nest |
| swarm control | artificial swarming with or without keeping brood of parent colony | aimed for 1-2 year-old queens; routinely made nucs to raise new queens, selected for non-swarmyness |
| race of bee | recommended Apis mellifera ligustica | recommended a locally adapted bee of a good breed |
| harvesting | draining crushed comb; tangential extractor in special cages | radial extractor; cut comb |
The thick walls, the insulated crownboard and the sloping floor with its full-width entrance to deal with any condensation suggest that Delon's variant of the People's Hive hive would be better suited to cold climates than the latter. His use of frames that do not prevent the nest from being hermetically sealed at the top, or from being bridged in places to the sides of the box, yet can be removed easily because of the single length of stainless steel reinforcings rod embedded in the comb at the sides and bottom, may have special value in countries where state law requires combs to be easily removable for inspection, e.g. USA and Canada.
Example of Delon frame
A Dadant 'growing down' or migrating into a Warré fitted with Delon frames and foundation. This process was started on 10 April 2008. Two weeks later there were mature queen cells in the Dadant and the Warré. The unit was used to make four colonies: 2 Dadant, 2 Warré (photo: Benoît Dupret).
Download 17-page illustrated description of Roger Delon's Stable-Climate Hive (PDF, 2.2 Mb)
Slobodan Z. Jankovic (Serbia) has further developed the Delon version of the Warré into what he calls the 'Alpine Hive': http://www.pcela.co.yu/alpine_hive_1.htm. It has either Delon frames or wooden ones.
Most of the information on this page is taken from Beekeeping For All (Warré) and http://ruche-warre.levillage.org/La Climatstable de Roger Delon.htm (Delon).