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28T 20DP 0.874" Round Bore, Steel Gear (am-0139)

 
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Price: $14.00

Stock Status: In Stock
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Product Overview:
The purpose of this gear is to be located on the shifting shaft of an AndyMark transmission (AM Shifter, Super Shifter). It is to be paired with a 35 tooth Medium Cluster Gear. This 28 Small Output Gear and the 35 Medium Cluster gear replace the standard set of Small Output Gear (35 tooth) and Medium Cluster Gear (28 tooth) on AndyMark transmissions.

Specifications:
  • Material: 4140 steel, cold rolled
  • Teeth: 28
  • Diametral Pitch: 20
  • Pressure Angle: 14.5
  • Pitch Diameter: 1.4 inch
  • Face Width: 3/8 inch
  • Bore: 0.874 inch, with dog pockets, for pressing in the FR6 bearing
  • Weight: 0.088 pounds
  • Tooth Size: 0.08 inches
Gear Ratios:
35 Medium Cluster Gear : 28 Small Output Gear --> 4:1 ratio between high and low gear on an AndyMark transmission (AM Shifter, Super Shifter). The standard ratio for these same transmissions are 2.56:1. This gear provides a TALLER ratio between high and low gear on these transmissions.

Average Customer Review: 5 of 5 Total Reviews: 2 Write your own review!

  0 of 0 people found the following review helpful:
 
Very Good February 22, 2016
Reviewer: Cybots FTC from Denver, IA United States  
This product is very high quality and just as the CAD files and drawings show. We have had very good luck with it in a two-speed gearbox we made.

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  0 of 0 people found the following review helpful:
 
. February 23, 2012
Reviewer: Pat O'Cain from Kincardine, ON Canada  
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