[Healeys] Speeds, distances, and odometers.

[Bob Spidell]

Hi Gary,


re:
"For example, I normally cruise with
> the
> needle midway between the 60 and the 80 marks on the speedometer, which the
> Garmin tells me is actually 65 mph, and occasionally go up to an indicated 80
> mph when I'm in the typical high-speed urban freeway traffic (like I5 passing
> Anaheim), which the Garmin says is about 72 mph."

Although it's "safer"--from a legal standpoint--to be traveling at less speed than indicated you can "calibrate" your speedometer by removing the needle and repositioning it on the spindle.  BTW, the "peg" the needle rests on retracts to allow the needle to be positioned below zero to start.


re:
"... was running with bottled water ... in the radiator"


Must be the SoCal influence (hope it was at least Evian, not any of that nasty Costco stuff ;).



bs


--
***************************************************************
Bob Spidell         San Jose, CA        bspidell at comcast.net
'67 Austin-Healey 3000             '56 Austin-Healey 100M
***************************************************************

 -------------- Original message ----------------------
From: Editorgary at aol.com

> I do have slightly smaller-diameter tires (running Kelly Metric 165x15s) and
> your four percent estimate isn't far off from what I calculated.
> I talked to Garmin about their calculations and the journey distance that's
> shown on the summary page is in fact the actual highway miles covered -- it's
> calculated by using the time and speed information. (There are some distances
> on the garmin that are point-to-point -- such as the distance to a gas station
> or restaurant -- but the journey distance is actual miles driven.)
> It's also interesting to compare the actual speed as shown on the GPS with
> the speed indicated on the speedometer. For example, I normally cruise with
> the
> needle midway between the 60 and the 80 marks on the speedometer, which the
> Garmin tells me is actually 65 mph, and occasionally go up to an indicated 80
> mph when I'm in the typical high-speed urban freeway traffic (like I5 passing
> Anaheim), which the Garmin says is about 72 mph.
> 
> Incidentally, FWIW on the entire trip, up hill and down, my temp never read
> over 200, and generally was reading between 170 and 190 degrees. On this trip
> I
> was running with bottled water and water wetter in the radiator, with no
> antifreeze, and I have a "Texas Kooler" plastic fan on the engine.
> 
> Cheers
> Gary