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02-04-2007, 10:45

The speedometer on 90 PT40 reads roughly 15-20% high. Presumably racks up miles
at a higher rate as well.

The VMSpc speed reading appears to be just about dead on; I would like to
improve the accuracy of the speedometer, and I wondered if anyone here has any
info on the programming?

On the back are 12 dip switches. 1-4 are labled "Ones" and 1, 2, 4, 8. 5-8 ae
labled "Tens" and 10, 20, 40, 80. 9-12 are labeled "Filter."

Only 2 and 4 are on (values 2 and 8).

This is an obvious question for Bluebird tech support, but so far on other
issues I'm batting .000 with them (meaning I have yet to talk to a human) so I
thought I would ask on the forums first in case someone has previously received
programming info.

Don Bradner
90 PT40 "Blue Thunder"