Flexible Couplers Cat Nos 50, 529

Eddystone (Brand), Stratton and Co., Ltd., Eddystone Radio Ltd.; Birmingham

Data
Forum
Pictures
Collections

  • Year
  • 1945 ??
  • Category
  • Radio part (not a module) 
  • Radiomuseum.org ID
  • 356989

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Special material, described in the notes.
  • from Radiomuseum.org
  • Model: Flexible Couplers Cat Nos 50, 529 - Eddystone Brand, Stratton and
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 38.9 x 38.9 x 23.8 mm / 1.5 x 1.5 x 0.9 inch
  • Notes

  • The Eddystone Cat Nos 50 and 529 Flexible Couplers are designed to connect standard 1/4" diameter control shafts without backlash. They allow for a slight misalignment of the shafts and provide a high degree of insulation between a component and a panel control. The Cat No 50 version has an outside diameter of 38.9 mm, a hub diameter of 12.7 mm, a width of 23.8 mm, and weighs 20 g. It withstands a 50 Hz AC proof voltage of 6.75 kV for one minute. The smaller Cat No 529 model has an outside diameter of 26.6 mm, a hub diameter of 9.53 mm, a width of 21.4 mm, and weighs 9 g. Its proof voltage is 3.75 kV.

    In both models the insulating material is white DL12, the spring spokes are nickel plated phosphor bronze, the hubs are nickel plated brass, the grub screws are zinc plated and passivated steel, while the rivets are nickel plated copper. Some of the couplers have "Eddystone Radio" moulded in the insulation, others have "2494P", and some have "Rd. No. 80.558" stamped on one of the spokes. Some military versions carry the UK Air Ministry stores number 10A/12380.

    An even smaller Cat No 550 coupler was produced that is designed for 5/32" diameter shafts. Cat No 893 is similar to Cat No 529 but has a 12.7 mm diameter hub and uses nylon loaded bakelite insulation instead of DL12.

  • Net weight (2.2 lb = 1 kg)
  • 0.020 kg / 0 lb 0.7 oz (0.044 lb)
  • Mentioned in
  • - - Manufacturers Literature (Eddystone Radio catalogues)
  • Author
  • Model page created by Bruce Taylor. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Flexible Couplers is part of the collections of the following members.

 Forum