[Main Sonett Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Re: Why is the speedo way off? Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by patquin [Email] (#52) [Profile/Gallery] (more from patquin) on Thu, 23 Mar 2006 17:43:17 In Reply to: Why is the speedo way off?, Jeff B, Thu, 23 Mar 2006 14:18:56 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

You guessed right. After riding shotgun in the '04 Saab-toberfest ("this is a parade, not a race!", ahem) I wanted to bring my Sonett the next time, so I went for this particular tire size to get a lower aspect ratio, more tread on the road and identical circumference so the speedo (more importantly, the odometer for rallying) would still agree. Then I noticed that at these aspect ratios, you need a 1/2 inch wider wheel than a soccerball. Then that meant looking for mags, and that's how all this started.

But I didn't mention that I also rebuilt the speedometer using a head from another vintage Saab bought on ebay--turns out that the VDO speedometers from VSAABs are NOT identical! After I discovered the problem, I noticed that the faceplates are calibrated differently across vintage units. Maybe the 3-speed cars were set up differently. Lesson: don't mix vintage Saab trannies and speedometers. So I'm going to take it out one more time and find a working head from another V4 Sonett--whenever I find one!

• Sonett V4 #1407, patquin , Sat, 18 Mar 2006 20:04:07
  • Mostly because I rebuilt it wrong..., patquin , Thu, 23 Mar 2006 17:37:38
  • Re: Sonett V4 #1407, patquin , Thu, 23 Mar 2006 17:25:39
  • Re: Sonett V4 #1407, Craig K , Sun, 19 Mar 2006 18:33:31
    • Re: Sonett V4 #1407, patquin , Sun, 19 Mar 2006 19:22:36
  • Carb level issues?, Jonathan Bartlett, Sun, 19 Mar 2006 13:28:15
    • Re: Carb level issues?, patquin , Sun, 19 Mar 2006 17:41:34
      • carb front-rear level, not left-right rotation., Jonathan Bartlett, Tue, 21 Mar 2006 09:47:45
        • Re: carb front-rear level, not left-right rotation., patquin , Tue, 21 Mar 2006 18:35:42
  • Shame about the wheels and speedo...., Chaz, Sun, 19 Mar 2006 05:34:16
    • Re: Shame about the wheels and speedo...., patquin , Sun, 19 Mar 2006 17:47:42
  • Re: Sonett V4 #1407, Tio Barry, Sun, 19 Mar 2006 05:16:52
    • Re: Sonett V4 #1407, Kemosobe, Tue, 21 Mar 2006 11:24:09
      • Re: Sonett V4 #1407, patquin , Thu, 23 Mar 2006 10:23:51
        • Why is the speedo way off?, Jeff B, Thu, 23 Mar 2006 14:18:56
          • Re: Why is the speedo way off?, patquin , Thu, 23 Mar 2006 17:43:17 <-- Viewing This Message
            • Did S&S do any metal work/rust repair for you?, Jeff B, Thu, 23 Mar 2006 20:44:14
              • Re: Did S&S do any metal work/rust repair for you?, patquin , Fri, 24 Mar 2006 16:59:19

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• Prev by Date: Mostly because I rebuilt it wrong..., patquin, Thu, 23 Mar 2006 17:37:38
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