My GPS unit says differently!! My Weddle tranny with 4.57 r/p and .082 4th gear with Agilis tires shows 3400rpm @70mph on the spedo, just exactly what the GPS says I'm doing. do you think Big Brother would lie to you?? 70 and 60 series tires will definitely give you a false sense of speed. DM&FS At 07:11 PM 9/6/2004, Wade Yorke wrote: >You may not actually be going as fast as your speedometer indicates >since the Vanagon speedometer is at least 15 miles per hour optimistic >at the higher speeds. In the Bentley it states that at 1000 rpm in >high gear you are going 18 miles per hour (29 kilometers per hour) with >the 4-speed transmission. I don't think the 5 speed has a higher ratio >in 5th, just different spacing of the gears. >Divide your indicated rpm by 1000 and then multiply that by 18 and you >will get your true miles per hour. For example: your engine rpm is >4,500. 4500 divided by 1000 = 4.5. Multiply 4.5x18= 81 miles per >hour. My 1.9TD conversion (with gas transmission) shows 80 miles per >hour at about 3,700 rpm. It sounds and feels like 80 but is really 67 >miles per hour. > >Wade Yorke >Nova Scotia >'84 Westy 1.9TD |
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