Mike, You seem to be suggesting (correct me if I got this wrong) that you are getting an accurate speed reading but an inaccurate odometer reading - so the gauge is disagreeing with itself? But, as you then say, you only think the speedo reading is accurate at 70mph, so the discrepancy may be accumulating while you are driving at other speeds.
I'd be more inclined to believe that the odometer within the speedo is working correctly, since it is powered just by a set of gears - so many revolutions of the speedo cable must always give a certain number of revolutions of the digits, regardless of speed. That only leaves the input to the speedo cable being wrong - and that is just a function of the ratio between the speedo drive and the gearbox output shaft, the diff, and the tyre diameter. The speedometer mechanism is more likely to be wrong, as the mechanism has more scope for inaccuracy than the odometer. The fact that you had to tweak it so much adds strength to that arguement. This really leaves only the diff and the speedo drive, since you are running standard tyres. Since you have checked the diff ratio, I suppose it can only be the speedo drive - which is the conclusion you already seem to have come to! There's another reason (beyond the fact that all 4-spd boxes have a 1:1 final output) that the problem can't be the gearbox ratios - the speedo drive is connected directly to the OUTPUT shaft of the gearbox, so it doesn't make any difference what the gear ratios are, because the bit you are measuring is always what is being fed directly to the wheels. Richard & Daffy P.S. what you seem to have hinted at, but totally omitted any details on, is that you just took Carly on holiday to Cornwall and back! Tell us more - how was the trip? ---------------------------------------------------------------------- Important Notice: The information in this email is confidential and may be legally-privileged. If you have reason to believe you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful and you are requested to contact the sender urgently and dispose of this email -----------------------------------------------------------exp. /// [EMAIL PROTECTED] mailing list /// Send admin requests to [EMAIL PROTECTED] /// or try http://www.team.net/cgi-bin/majorcool /// Archives at http://www.team.net/archive /// Send list postings to [EMAIL PROTECTED] /// Edit your replies! If they include this trailer, they will NOT be sent.
