>At 11:12 AM +1000 14/5/98, Darrell Leach wrote:
>
>>Yes the formula is backwards, A slip of the keyboard.
>>But the Chart shows correct numbers, note that the shorter tire
>>has a higher speed indicated.
>>
>>>>Speed at
>>>>Indicated Approximate
>>>>55 MPH. Tire Diameter (inches)
>>>
>>>>55 185/80/15 26.6
>>>>60 185/65/15 24.5
>>>>56 205/70/15 26.3
>>>>59 205/60/15 24.7
>>>>54 215/70/15 26.9
>>>>57 215/65/15 26.0
>
>The heading on the first column suggests a constant indicated speed, in
>which case, a shorter tyre will produce a lower actual speed and vice
>versa. If you really do mean the actual speed at an indicated speed of 55
>mph, then the table is also reversed; not just the formula.
>
Wow, a bad day all the way around, the first column should say 'Indicated
Speed at 55 MPH' vise 'Speed at Indicated 55 MPH'.
So Long,
Darrell Leach, KD6LRC DM-15, Ridgecrest, Ca
email: Triumph_TR4@ridgecrest.ca.us
http://www.ridgecrest.ca.us/~token/PAGE1.html
1962 TR-4 (CT5368LO) Everyday
1962 TR-4 (CT13108L)
1965 Spitfire Mk 2
1967 Spitfire Mk 3 In work, lots of 1500 stuff
Keeper of the TR-4 List, Version 2.0 availible.
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