I just hack saw the crimped band off to gain access and then reassemble it using 4" heat shrink tubing.
Next time you have to take your Tach or Speedo apart, throw away the metal loop that holds the bezel on and use a piece of 4" heat shrink tubing instead.
Use a hack saw to saw the bezel in two opposite places and remove it.
1. Buy a one foot section of 4" heat shrink tubing.
2. Cut a 15/16 in strip of tubing from the one foot section.
3. Prop the Speedo / Tach face down on a .31 in high round "thing". I used a lid from a small jar of "Dromedary Diced Pimientos" (upside down to accommodate the slight curve in the glass)
4. Place the 15/16 in strip of heat shrink around the bezel.
5. Apply heat from a heat gun evenly all the way around.
(Don't pay attention to the mug with the Golden on it.
That's her food cup. The wine is there to reduce the stress from owning a Golden...
The Tums are there to reduce the stress from the wine...
Here is a front view:
Notes: The .31 dimension is from the front edge of the bezel to the work surface, with the tach / speedo face down on a suitable prop. You have to allow for the slight curve of the glass. If done exactly, there is no trimming required. A lid from a small jar of "Dromedary Diced Pimientos" works perfectly because it forms a cup to keep the glass curve from wobbling when you apply the heat.
There is enough material in the 1' length of 4" heat shrink material to do 12 Tachs or Speedos, so share with your buddy.
