Date: Tue, 7 May 2013 10:01:18 -0500
Reply-To: ddbjorkman@VERIZON.NET
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Bjorkman <ddbjorkman@VERIZON.NET>
Subject: Fwd: Re: Re: speedometer accuracy
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<div style="FONT-FAMILY: Times New Roman; COLOR: rgb(0,0,0); FONT-SIZE: 16px"><DIV><SPAN style="FONT-SIZE: 12px; FONT-FAMILY: arial; COLOR: #000000"> </DIV><BR>From: <SPAN class=misspelled>ddbjorkman</SPAN>@<SPAN class=misspelled>verizon</SPAN>.net<BR>Date: May 7, 2013 8:54:28 AM<BR>Subject: Re: Re: <SPAN class=misspelled>speedometer</SPAN> accuracy<BR>To: bike2vcu@YAHOO.COM<BR></SPAN> <BR><DIV style="FONT-SIZE: 16px; FONT-FAMILY: Times New Roman; COLOR: rgb(0,0,0)"><DIV>Before you go blaming the <SPAN class=misspelled>speedo</SPAN> (which is well documented as being off) and take the GPS as the final word. do not forget that there is an error in accuracy in your GPS also. There should be a place you can check which satellites are being used by your GPS and the expected accuracy. One may be surprised to find that that error can be more than just a few feet.</DIV><DIV>BTW, by using my GPS. I found that the error in accuracy in my <SPAN class=misspelled>speedo</SPAN> seems to increase as I increase my speed beyond <SPAN class=misspelled>approx</SPAN>.. 70 MPH. Seems to be more than just the ratio thing.</DIV><DIV> </DIV><DIV><SPAN class=misspelled>Dave</SPAN> B.</DIV><DIV> </DIV><DIV> </DIV><DIV> </DIV><DIV style="BORDER-TOP: #bcbcbc 1px solid; MARGIN: 5px 0px"></DIV><SPAN style="FONT-SIZE: 12px; FONT-FAMILY: arial; COLOR: #000000">On 05/06/13, <SPAN><SPAN class=misspelled>Stephen</SPAN> <SPAN class=misspelled>Grisanti</SPAN></SPAN> wrote:</SPAN><DIV> </DIV><DIV style="FONT-SIZE: 12px; FONT-FAMILY: arial; COLOR: #000000">Stock tire size on my '87 was revealed to be reading slow when we borrowed "<SPAN class=misspelled>Samantha</SPAN>" the GPS from <SPAN class=misspelled>neighbors</SPAN> for a trip. In addition to reminding us about all the turns we'd missed she informed us that at an indicated 65 we are really doing about 58. Here I thought everyone else was really hauling and it turns out I'm the one who is not.<BR><SPAN class=misspelled>Stephen</SPAN><BR><BR>--- On <SPAN class=misspelled>Mon</SPAN>, 5/6/13, <SPAN class=misspelled>Mike</SPAN> Miller <A class=parsedEmailparsedEmail href="mailto:mwmiller6@ATT.NET" target=_blank>mwmiller6@ATT.NET</A>> wrote:<BR><BR>From: <SPAN class=misspelled>Mike</SPAN> Miller <A class=parsedEmailparsedEmail href="mailto:mwmiller6@ATT.NET" target=_blank>mwmiller6@ATT.NET</A>><BR>Subject: Re: <SPAN class=misspelled>speedometer</SPAN> accuracy<BR>To: <A class=parsedEmailparsedEmail href="mailto:vanagon@GERRY.VANAGON.COM" target=_blank><SPAN class=misspelled>vanagon</SPAN>@GERRY.VANAGON.COM</A><BR>Date: Monday, May 6, 2013, 4:54 PM<BR><BR>I'm interested too. I've put 225/75-15 <SPAN class=misspelled>BFGs</SPAN> on and my <SPAN class=misspelled>speedometer</SPAN> is off,<BR>according to my GPS, by more than the percentage the difference in size between<BR>that and stock predict. I thought the stock VW <SPAN class=misspelled>speedometers</SPAN> were off but on the<BR>high side as <SPAN class=misspelled>Karl</SPAN> indicated, but the percentage is greater, meaning the stock<BR>was reading too slow?<BR><BR>Also I have a scan gauge and it indicates about 100 RPM less than the <SPAN class=misspelled>diesel</SPAN><BR><SPAN class=misspelled>tach</SPAN> <SPAN class=misspelled>idicates</SPAN>? Which is likely to be more correct and how does each determine<BR>RPM?<BR><BR><SPAN class=misspelled>Mike</SPAN> in <SPAN class=misspelled>Cotati</SPAN><BR><BR><BR><BR><BR>________________________________<BR>From: <SPAN class=misspelled>Karl</SPAN> <SPAN class=misspelled>Ploessl</SPAN> <A class=parsedEmailparsedEmail href="mailto:karl.ploessl@GMAIL.COM" target=_blank><SPAN class=misspelled>karl</SPAN>.<SPAN class=misspelled>ploessl</SPAN>@GMAIL.COM</A>><BR>To: <A class=parsedEmailparsedEmail href="mailto:vanagon@GERRY.VANAGON.COM" target=_blank><SPAN class=misspelled>vanagon</SPAN>@GERRY.VANAGON.COM</A><BR>Sent: <SPAN class=misspelled>Mon</SPAN>, May 6, 2013 1:29:08 PM<BR>Subject: <SPAN class=misspelled>speedometer</SPAN> accuracy<BR><BR>so I finally got a GPS in my van. And what do I notice?<BR><SPAN class=misspelled>Speedometer</SPAN> says 60 <SPAN class=misspelled>mph</SPAN> and GPS says 45 <SPAN class=misspelled>mph</SPAN>! At 70 (<SPAN class=misspelled>speedometer</SPAN>) the GPS<BR>says 62!<BR>I am running <SPAN class=misspelled>Michelin</SPAN> <SPAN class=misspelled>Agilis</SPAN> 61 in size 185/14 C and it is a <SPAN class=misspelled>Westy</SPAN> 81<BR><SPAN class=misspelled>aircooled</SPAN>. And it is in Delaware to satisfy <SPAN class=misspelled>Scott</SPAN>.<BR>The question I have: does this discrepancy also affect the <SPAN class=misspelled>odometer</SPAN>?<BR><BR>------<BR><SPAN class=misspelled>Karl</SPAN><BR>1981 <SPAN class=misspelled>Westy</SPAN> "Jenny"<BR>2000 VW <SPAN class=misspelled>Jetta</SPAN> GLS VR6<BR><SPAN class=misspelled>Wilmington</SPAN>, DE<BR></DIV></DIV><BR></div>
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