SOT: 930 Tach disassembly FT! is rattling in there?, Unless your running a boosted -6 |
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SOT: 930 Tach disassembly FT! is rattling in there?, Unless your running a boosted -6 |
914forme |
Nov 12 2017, 07:58 PM
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#1
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Times a wastin', get wrenchin'! Group: Members Posts: 3,896 Joined: 24-July 04 From: Dayton, Ohio Member No.: 2,388 Region Association: None |
So I have a 930 Tach, and every time you rolled it around it would rattle. I figured that someone dropped a bulb in it, but before I did something with itI needed to find out why it rattled so.
So let the autopsy begin. (IMG:style_emoticons/default/screwy.gif) 930 Tach - so what makes these so damn expensive (IMG:style_emoticons/default/confused24.gif) That little 1 bar boost gauge hosed in the face. (IMG:style_emoticons/default/confused24.gif) Tools of the trade - custom made for this job. Opens gauge bezels like a can opener. Just work your way around, at least 3/4 of the way. All opened up (IMG:style_emoticons/default/piratenanner.gif) Flip it over remove three screws and one nut. And removed from the can More Detail just for you Tim (IMG:style_emoticons/default/beer.gif) Interior of the can And now what was rattling around inside the tach. (IMG:style_emoticons/default/poke.gif) I was right (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/happy11.gif) Can't wait to see what happens to this now (IMG:style_emoticons/default/shades.gif) |
914forme |
Nov 13 2017, 07:46 PM
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#2
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Times a wastin', get wrenchin'! Group: Members Posts: 3,896 Joined: 24-July 04 From: Dayton, Ohio Member No.: 2,388 Region Association: None |
Mark, are you talking reverse rotation on the gauge? Or have the needle facing down to the bottom? Like it does in a stock gauge. The 2nd option would be no, as it would compete for real estate with the tach movements. And updating the tach movements to a smaller unit, causes some other issues that might not be favorable. The two needles could cross, and get locked like an old typewriter.
The other item, I have been thinking about reverse rotation and have not found my complete answer. Of course I might just have to test it out. It is a DC motor of sorts, so maybe just reversing the polarity would do it. (IMG:style_emoticons/default/laugh.gif) But I doubt it will be that easy, otherwise every one would be doing it. |
timothy_nd28 |
Nov 13 2017, 08:14 PM
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#3
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Advanced Member Group: Members Posts: 2,299 Joined: 25-September 07 From: IN Member No.: 8,154 Region Association: Upper MidWest |
The other item, I have been thinking about reverse rotation and have not found my complete answer. Of course I might just have to test it out. It is a DC motor of sorts, so maybe just reversing the polarity would do it. (IMG:style_emoticons/default/laugh.gif) But I doubt it will be that easy, otherwise every one would be doing it. Not a easy task with this style motor. They have a hair spring attached to the shaft, you would need to flip the spring. Then, the gauge motors' case is grounded, you would need to remove the motor from its case and move some wires around. These wires are super thin, wouldn't be easy. I like Larry's idea with using a cheap 911 gauge motor. |
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