Speaking of speedo's

[haygood at myway.com (Brian Haygood)]

OK, so I've made another embarassing blunder.  The speedo gear for the 4.25 trans is RED, not white.  I was thinking of the wrong part on the wrong shelf.  Oops.  



How about putting a short list together for the .org gears page.  I'll start...



4.25 FD, Speedo Gear is red with 15 teeth.  Pinion shaft has 7 teeth.



And just out of curiosity:



(Wheel RPM) * FD * (shaft teeth) / (speedo teeth) = 

WRPM * 4.25 * 7 / 15 = 

WRPM * 1.98 = Speedo Cable RPM



So the speedo cable spins roughly half as fast as the wheels.



I'm running on no sleep today, so that may be full of crap, too.



BH









 --- On Wed 05/18, Jeff Toomasson < area53@validpath.com > wrote:

From: Jeff Toomasson [mailto: area53@validpath.com]

To: haygood@myway.com

     Cc: scirocco-l@scirocco.org

Date: Wed, 18 May 2005 18:22:21 -0500 (CDT)

Subject: RE: Speaking of speedo's



Really? Did you get accurate readings w/ it? I thought I saw somewhere that the <br>4.25 R&P requires a green gear...<br><br> <br>> My 4.25 tranny has a white gear as well.<br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>>  --- On Wed 05/18, Peter < peter@thescirocco.com > wrote:<br>> <br>> From: Peter [mailto: peter@thescirocco.com]<br>> <br>> To: JoshuaA.Conner@VerizonWireless.com<br>> <br>>      Cc: scirocco-l@scirocco.org<br>> <br>> Date: Wed, 18 May 2005 15:51:25 -0400<br>> <br>> Subject: RE: Speaking of speedo's<br>> <br>> <br>> <br>> Josh,<br><br>The 3.67 gear is red, and 3.89/3.94 is white.<br><br>White up<br>> to, and including '84, red is '85 and up, 8V and 16V.<br>> <br><br>Peter<br>http://thescirocco.com/<br><br>Please! Include the<br>> previous text in your reply...<br><br>-----Original Message-----<br>From:<br>> scirocco-l-bounces+peter=thescirocco.com@scirocco.org<br>[mailto:scirocco-l-<br>bounces+peter=thescirocco.com@scirocco.org]<br>> On Behalf 
Of<br>Ben Harder<br>Sent: Wednesday, May 18, 2005 12:37 PM<br>To:<br>> JoshuaA.Conner@VerizonWireless.com; jdbubb@ix.netcom.com<br>Cc:<br>> scirocco-l@scirocco.org<br>Subject: Re: Speaking of<br>> speedo's<br><br>Josh,<br><br> I am almost certain that you only change the<br>> gear on the end of the speedo<br>when you are changing the FINAL DRIVE. <br>> Changing out the 5th gear should<br>have no impact on the speedo gear.  For<br>> a stock 2Y trans (3.67 final) you<br>should be using the original white<br>> gear, not red.<br><br>Ben<br><br><br>--- JoshuaA.Conner@VerizonWireless.com<br>> wrote:<br>> I have the stock 2Y  tranny with a big ole .75 5th.  I have<br>> replaced <br>> the speedo gear with I think the correct red one.  My speedo<br>> reads <br>> about 10 mph high at indicated 45 but gets closer to accurate<br>> at 100 <br>> and above according to *ahem* radar tests(ind 85 is really<br>> 79).  What <br>> gives?  Did I get the wrong gear?<br>> <br>> Joshua<br>> 
Conner<br>> <br>><br>> ___________________________________________________________________<br>><br>> The information contained in this message and any attachment may be <br>><br>> proprietary, confidential, and privileged or subject to the work <br>><br>> product doctrine and thus protected from disclosure.  If the reader of<br>> <br>> this message is not the intended recipient, or an employee or agent<br>> <br>> responsible for delivering this message to the intended recipient,<br>> you <br>> are hereby notified that any dissemination, distribution or<br>> copying of <br>> this communication is strictly prohibited.<br>> If you<br>> have received this communication in error, please notify me  <br>><br>> immediately by replying to this message and deleting it and all copies<br>> <br>> and backups thereof.  Thank<br>> <br>you.<br><br><br><br>_______________________________________________<br>Scirocco-<br>l<br>> mailing<br>> 
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