F.A.Q Frequently Asked Questions

What Model or Ratio Velvet Drive do I Have?

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What Model or Ratio Velvet Drive do I Have?
Transmission
Assembly Number		 Previous Trans.
Assembly Number		 Transmission Ratio
Forward Reverse
10-17-000-001 AS1-71C 1:1 1:1
10-17-000-002 AS1-71CR 1:1 1:1
10-17-000-003 AS1-71CBR 1:1 1:1
10-17-000-004 AS1·:71CBR 1:1 1:1
10-17-000-005 AS2-71C 1.52:1 1.52:1
10-17-000-006 AS2-71CR 1.52:1 1.52:1
10-17-000-007 AS7-71C 1.91:1 1.91:1
10-17-000-008 AS7-71CR 1.91:1 1.91:1
10-17-000-009 AS3-71C 2.10:1 2.10:1
10-17-000-010 AS3-71CR 2.10:1 2.10:1
10-17-000-011 AS14-71C 2.57:1 2.57:1
10-17-000-012 AS14-71CR 2.57:1 2.57:1
10-17-000-013 AS15-71C 2.91:1 2.91:1
10-17-000-014 AS15-71CR 2.91:1 2.91:1
10-17-000-015           AS20-71C 1:1 1:1
10-17-000-016 AS20-71CR 1:1 1:1
10-17-000-108 None 1.88:1 1.88:1
10·18-000-001 AS11-72C 1:1 1.10:1
10-18-000-002 AS11-72CR 1:1 1.10:1
10-18-000-003 AS12-72C 1.52:1 1.68:1
10-18-000-004 AS12-72CR 1.52:1 1.68:1
10-18-000-1 06 None 1.88:1 2.07:1
10-18-000-005 AS17-72C 1.91:1 2.10:1
10-18-000-006 AS17-72CR 1.91:1 2.10:1
10-18-000-007 AS13-72C 2.10:1 2.31:1
10-18-000-008 AS13-72CR 2.10:1 2.31:1
10-18-000-009 AS14-72C 2.57:1 2.83:1
10-18-000-010 AS14-72CR 2.57:1 2.83:1
10-18-000-011 AS15-72C 2.91:1 3.20:1
10-18-000-012 AS15-72CR 2.91:1 3.20:1
10-18-000-013 AS20-72C 1:1 1.10:1
10-18-000-014 AS20-72CR 1:1 1.10:1
10-18-000-01’5 None 1:1 1.10:1
10-18-000-106 None 1:1 1.10:1
10-18-000-017 None 1:1 1.10:1
Notice there are two or more model numbers for each ratio. Velvet Drive used different model numbers for each rotation input.
With exception to the 2.10:1 ratio you can change the pump to be used on the engine you have. Changing the front pump will have no effect on the output rotation. The transmission will do nothing if not indexed for the proper engine input rotation.

Typically Even current production model numbers are used on standard (automotive) rotation engines and odd current production model numbers are on opposite automotive rotation engines.

1.88:1 and 1.91:1 Ratio transmissions reverse the output rotation from the input rotation

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