The Chainlink

These two catalog pages describe an undisclosed year of the product range from MDI.  These models are:

  • Super Deluxe G
  • Super
  • Motor (M.T.) Pump
  • No.1 Pump
  • Model A Pump
  • Model B Pump
  • Model C Pump
  • Top Super
  • Super SS
  • Folding "Baby" Pump
  • New No. 1 Pump
  • Model D Pump
  • Frame Pump
  • Step Foot Pump (2 models)
  • Deluxe Step Foot Pump (2 models)

Bicycle Pump Heads or "Adaptor"s

  • 64-1 for "english (Dunlop) or american (Schrader) pattern valve"
  • 64-2 Thumblock
  • 70-1 for "american pattern valve" (Schrader)
  • Model A for "english pattern valve" or Dunlop valve
  • 64-1F for Presta or Schrader
  • 64-2F for Presta or Schrader
  • 78-1 for Presta
  • 81-1 for Presta with chain
  • Needle for basketballs, etc.

Other accessories:

  • Hose/tubing or "Pump Connection" with 64-1 adaptor, 20" and 24" long
  • Frame "Pump Connection" hose/tubing, 6", 8", 10", 15" lengths
  • Models (D) and (C) clips to hold tubing and accessories to the pump tube.
  • (Leather) Pump Washers in 1-1/2", 1-3/8", 1-1/4", 1-1/8", 1", 7/8", and 1-3/4" diameters.  These are known as Cup Packing leather washers if there is nothing currently available for your pump.

If you were lost before and looking for answers about your MDI pump this should help a bit.


Matt M

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1 - 1/4 " leather pump washer dimensions (Top Super, Cyclepro, likely others):

2.4mm (3/32") thick, approximately 30 degree cut on radius (angle cut on outside of leather - not the angle of the outside of the cup)
9.5mm (3/8") center hole
9.5mm (3/8") height
27.8mm outside diameter at top (1-3/32")
31.75mm outside diameter at base (open end) (1-1/4")
(28.6mm or 1-1/8" inside diameter pump tube)

Image is from Monarch-McLaren, Ltd.  This is not a drawing representing the MDI pump washer but it will help interpret the given dimensions.



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