65 speedometer
Thread Starter
Racer
Joined: Sep 2014
Posts: 425
Likes: 32
From: richmond virginia
65 speedometer
The speedometer on my 65 reads fast. In other words, when I'm actually going 60 mph, it reads 65 mph. I know I need to remove the plastic gear but do I need to go 1 tooth more or 1 tooth less for the new gear?
Race Director
Joined: Apr 1999
Posts: 10,866
Likes: 717
From: Beverly Hills/Pine Ridge Florida
Quick answer... you need a gear with more teeth to make the speedo spin slower.
65/60 = 1.083
If you have a 26 tooth gear in there now, you'd need a 28.xxx tooth gear to slow it down.
26 x 1.083 = 28.xxxx
Chuck
65/60 = 1.083
If you have a 26 tooth gear in there now, you'd need a 28.xxx tooth gear to slow it down.
26 x 1.083 = 28.xxxx
Chuck
Team Owner
Joined: Mar 2003
Posts: 26,118
Likes: 1,874
From: Greenville, Indiana
That said, you can try one more tooth on the plastic gear and that should slow down your speedometer about 3 mph. That's if the gear doesn't shear due to mismatch with the steel gear.
Safety Car
Joined: Feb 2006
Posts: 4,142
Likes: 704
