If a fellow had a defective forward clutch in his AT, would that upset the
mph-to-rpm calculations?

--
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
KG6RCR

On 11/17/2007 10:14 AM Mark Drillock wrote:

> tires of 815 rev/mile (stock 14" tire)
>
> 1 x 4.09 x 815 axle revs/mile = 3333 engine revs/mile
>
> 60 mph = 1 mile/min
>
> 3333 engine revs/mile X 1 mile/minute  = 3333 engine revs/minute
>
> Don't know what the slippage factor would be for the auto tranny but the
> rpms would be 3333 or more at a true 60 mph with stock size tires
>
> 'Stock' 14" tires can vary slightly rev/mile, by + or - 10 or about 1%.
>
> Mark
>
> Michael Elliott wrote:
>
>> This is doubtless in the archives but I can't find the right keywords to
>> unearth it.
>>
>> I'd like to check my tach's accuracy. With the NH type automatic
>> transmission (1984 Vanagon), what the math to find what I should expect to
>> read on the tach if I'm doing 60mph?
>>
>> Second, if a train departs Grand Central Terminal at 2pm and heads west
>> at 52 miles per hour, and another train leaves Chicago at 4pm heading east
>> at 62 mph, what day of the week is it?
>>
>> --
>> Mike "Rocket J Squirrel" Elliott
>> 71 Type 2: the Wonderbus
>> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
>> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
>> KG6RCR
>>