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Mechanical Model Kits - Gear Driven

 

SINGLE MESH GEAR DRIVE
4Z4-001
              Type:   Gear Drive

Drive illustrates speed relationships in a single mesh, external, spur gear drive. 48-tooth gear on crank operated input shaft drives 96-tooth gear on output shaft with indicator. Useful in studying speed ratios and control of direction of rotation obtainable with gearing. Price: $63.83

 

GEAR DRIVE WITH IDLER
4Z4-002
             Type:  Gear Drive

Drive illustrates speed relationships in a gear train with idler. 48-tooth gear on input shaft drives 36-tooth gear (idler) on intermediate shaft, which meshes with 96-tooth gear on output shaft. Illustrates function of idler in changing direction of rotation without affecting output shaft speed. Price: $68.99

 

DOUBLE-STAGE GEAR DRIVE
4Z4-003
                  Type:   Gear Drive

Drive indicates speed and directional relationships in a compound gear train: dependence of speed ratio between input and output shafts on tooth ratios of both meshes (93/36x54/48), while number of meshes determines direction of rotation (in this case both shafts rotate in same direction). Price: $78.41

 

WORM-GEAR DRIVE
4Z4-004
  Type:  Gear Drive

Drive illustrates motion transmission between two non-parallel, non-intersecting shafts at right angles; speed relationships in a worm-gear drive (note high reductions); and introduction to irreversible drives; crank and indicator on the two shafts assist in studying speeds and direction of rotation. Price: $73.17

 

BEVEL-GEAR DRIVE
4Z4-005
Type:  Gear Drive

Drive illustrates motion transmission between non-parallel, intersecting shafts (in this case at right angles), and speed relationships in a bevel-gear train. Crank and indicator on the two shafts assist in studying speeds and directions of rotation. Price: $73.17

 

GENEVA DRIVE
4Z4-006
Type: Shift Gears

Drive illustrates principles of an indexing motion. Crank-operated drive shafts engages six-station, external geneva wheel, motion of which is intermittent (1/6 turn advance followed by dwell). Illustrates speed variation and constructional characteristics of an intermittent-motion drive. Price: $66.06

 

RACK-AND-GEAR DRIVE
4Z4-011
  Type:  Gear Drive

Drive illustrates conversion of a rotation into a proportional translation with limited travel. Gear sector on crank-operated drive shaft engages rack mounted on dovetail slide. Drive shows dependence of speed relationships on geometry of drive. Price: $56.45

 

GEARED RECIPROCATOR DRIVE
4Z4-013
                
        Type:  Gear Drive

Drive illustrates conversion of rotational motion into variable-speed reciprocation using gearing and slotted-link connection between crank-operated input shaft and oscillating out-put motion. Indicators useful in studying speeds and phase relationships involved. Price: $97.24

 

PLANETARY GEAR DRIVE
4Z4-014
            Type:   Gear Drive

Drive illustrates principles of planetary gear systems. 108-tooth internal gear engages 30-tooth planetary gears, which mesh with 48-tooth gear on shaft concentric with input; arm holds planetary gears. Arrangements for holding different members fixed. Illustrates speed ratios, directional relationships and principles of construction in drives involving gears on moving centers. Price: $188.19

 

SMP15.TIF0.GIF (15510 bytes)CYCLOIDAL CRANK
4Z4-015
  Type:  Gear Drive

Drive illustrates conversion of a uniform rotation into a unidirectional, variable-speed rotation. Arm drives planetary pinion riding inside stationary, internal (sun) gear. Pin on planet pinion engages slotted link on output member, imparting variable speed. Center distance between shafts variable. Useful in studying speed variation and motion characteristics of a non-uniform motion drive. Price: $94.09

 

EPICYCLIC GEAR DRIVE
4Z4-017
        Type:  Gear Drive

Drive illustrates motion of a gear train consisting of a 60-tooth sun gear and arm (input) carrying a 24-tooth planet gear riding externally on the sun gear. Planetary (epicyclic) motion shown by following the path traced on a fixed end plate by a scribing point attached to the planet gear. Useful in illustrating characteristics of an important class of compound motions. Price: $57.51

 

TRIPLE-STAGE GEAR TRAIN
4Z4-031
               Type:   Gear Drive

Drive illustrates motion transmission in a three-mesh, four axis gear train (96/24x72/36x90/30). Indicators on the four shafts illustrate speeds, phasing and directions of rotation gear transmissions. Price: $104.54

 

FOUR-STAGE CHANGE-GEAR ASSEMBLY
4Z4-032
                                      Type:   Gear Drive

Drive illustrates principle of angular-speed variation using change gears. Drive shaft connected by a sliding clutch to any one of a set of change gears connected to output shaft, thus providing a choice of speed ratios. Useful in understanding design principles and kinematics of transmissions, such as are found in machine tools and vehicle drives. Price: $229.79

 

HELICAL-GEAR DRIVE
4Z4-035
     Type:  Gear Drive

Drive illustrates principle of single helical gear mesh (36/48) for coupling two parallel shafts with a constant speed ratio. Indicator on output shaft assists in studying speeds and directions of rotation involved. Price: $48.09

 

CROSSED HELICAL-GEAR DRIVE
4Z4-036
       
                Type:   Gear Drive

Drive illustrates principle of motion transmission at constant speed ratio between two non-intersecting shafts at right angles, using helical gears (48/36). Indicator on output shaft useful in studying speeds and directions of rotation in a commonly used instrument drive. Price: $54.36

 

DOUBLE-STAGE CROSSED HELICAL-GEAR DRIVE
4Z4-037
                                              Type:   Gear Drive

Drive illustrates motion transmission at constant speed ratios involving more than two shafts using crossed helical gears. Crank-operated drive shaft coupled to parallel output shaft by intermediate gear mounted on a shaft at right angles. Indicators on intermediate and output shaft useful in studying speeds, phase, and directional relationships involved. Price: $70.03

SMP38.TIF0.GIF (36390 bytes)HERRINGBONE-GEAR DRIVE
4Z4-038
        
         Type:  Gear Drive

Drive illustrates principle of motion transmission at constant speed ratio between two parallel shafts using herringbone gears. Indicator on output shaft assists in studying speeds and directions of rotation in a type of gearing used to minimize axial thrust power drives. Price: $72.14

 

BEVEL GEAR FORWARD & REVERSE MECHANISM 4Z4-048       Type:  Gear Drive

Mechanism consists of a 48 tooth bevel gear which drives either of two 24 tooth bevel gears mounted on the cross shaft. When the shift button is depressed, the drive is shifted from one 24 tooth gear to the other, reversing the direction of rotation of the output shaft. Indicators on the shafts facilitate the study of speeds and directions of rotation involved. Price: $80.50

 

COMPACT TOOL KIT 4Z4-0ST

Five piece kit consisting of two screw drives and three wrenches. Price: $12.95

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