Difference between revisions of "AMTreadMountsPage"

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For the 2010 season the 4 wheel pivot drives used 4" ANDYMARK Plaction wheels. Our design of the pivots originally allowed for the removal and replacement of the wheel treads without disassemble of the pivot. The original treads that came with the wheels used staples to join the ends. We continued with this method. This meant that the side plates of the pivot had to be removed to change the treads. This is a very time consuming process. Also, there is the chance to incorrectly assemble the pivot. This happened before ramp-riot and resulted in a failed bearing. To remedy this problem we came up with using 6-32 threaded brass inserts and Pan head screws to hold the treads on. This PDF can be printed out and used as a template to drill and screw in the inserts. It can also be used to locate the holes in the tread. [[Media:AndyMarkTemplate.pdf | AndyMark Tread Template]]
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For the 2010 season the 4 wheel steering pivot drive used 4" ANDYMARK Plaction wheels. Our design of the pivots originally allowed for the removal and replacement of the wheel treads without disassemble of the pivot. The original treads that came with the wheels used staples to join the ends. We continued with this method. This meant that the side plates of the pivot had to be removed to change the treads. This is a very time consuming process. Also, there is the chance to incorrectly assemble the pivot. This happened before ramp-riot and resulted in a failed bearing. To remedy this problem we came up with using 6-32 threaded brass inserts and Pan head screws to hold the treads on. The McMaster part number for the insert is 99362A300 and the Screw part number is 91770A147. The thread inserts list a .191 hole. This is to big. A .181 to .183 hole works best. This PDF can be printed out and used as a template to drill and screw in the inserts. It can also be used to locate the holes in the tread. [[Media:AndyMarkTemplate.pdf | AndyMark Tread Template]]
  
 
Tread length for the 4" ANDYMARK Plactraction wheels is 11-11/16 inches.
 
Tread length for the 4" ANDYMARK Plactraction wheels is 11-11/16 inches.

Revision as of 13:19, 22 May 2010

Deaver Mounting Method for AM Plaction Wheel Treads


For the 2010 season the 4 wheel steering pivot drive used 4" ANDYMARK Plaction wheels. Our design of the pivots originally allowed for the removal and replacement of the wheel treads without disassemble of the pivot. The original treads that came with the wheels used staples to join the ends. We continued with this method. This meant that the side plates of the pivot had to be removed to change the treads. This is a very time consuming process. Also, there is the chance to incorrectly assemble the pivot. This happened before ramp-riot and resulted in a failed bearing. To remedy this problem we came up with using 6-32 threaded brass inserts and Pan head screws to hold the treads on. The McMaster part number for the insert is 99362A300 and the Screw part number is 91770A147. The thread inserts list a .191 hole. This is to big. A .181 to .183 hole works best. This PDF can be printed out and used as a template to drill and screw in the inserts. It can also be used to locate the holes in the tread. AndyMark Tread Template

Tread length for the 4" ANDYMARK Plactraction wheels is 11-11/16 inches.

The following pictures show the method.

  • screw inserts

  • screw inserts installed in Plaction wheel

  • Treads with pre-punched holes

  • finished wheel with tread secured

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