Author Topic: Dwell meter  (Read 1473 times)

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Offline 6adan

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Dwell meter
« on: September 06, 2007, 09:28:23 PM »
  Just got a dwell meter off ebay with no manual,never used one before. How do you use it? Thanks Dannie



eldar

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Re: Dwell meter
« Reply #1 on: September 07, 2007, 08:29:49 AM »
Well what brand and model is it? different models work differently. You can also search the net for an online manual.



Offline 6adan

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Re: Dwell meter
« Reply #2 on: September 07, 2007, 10:08:14 AM »
  It is a Sears model 161.216500. It two leads a black and a green with a switch for RPM Dwell and Volts. Dannie



Offline TwoTired

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Re: Dwell meter
« Reply #3 on: September 07, 2007, 11:47:00 AM »
Dwell meters are clipped across the point contact set.

Interpreting their reading is the tricky part.  They can be calibrated for 8 Cyl, 6 Cyl, 4 Cyl, 2 cyl, etc.  Technically, you would use a one cyl, setting as the four cylinder Honda ignition fires  once per revolution.  The auto dwell meter is expecting 4 pulses for two revolutions.
You can still use your dwell meter regardless of scale indication.  Just use new points, set the gap mechanically as accurately as you can and note the dwell reading on a scale that looks "sensitive" or sensible to you.

That will be your goal the next time you wish to adjust points.

My Dwell meter on the car 4 cyl scale, reads 46-49 degrees.
The specified dwell angle for the SOHC4 is 190 +/- 5 degrees of crankshaft rotation.

Divide 190 (specified dwell) by 2 Cylinders = 95.
Divide 95 by 2 (doubled firing pulses) = 47.5

Hope this helps,


Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC

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Offline Jonesy

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Re: Dwell meter
« Reply #4 on: September 07, 2007, 01:01:54 PM »
Very well done, TT!

I've asked this question before, but have never gotten any sort of good response. I knew how to get a reading, but no idea what to do with it or what it meant. This was the kind of answer I have been looking for.

This is something that interests me despite that fact I now run a Dyna-S module...
"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen



Offline mark

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Re: Dwell meter
« Reply #5 on: September 07, 2007, 02:15:18 PM »
  It is a Sears model 161.216500. It two leads a black and a green with a switch for RPM Dwell and Volts. Dannie

Black lead to ground and Green lead to points.

Happy trails.
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F you mark...... F you.



Offline 6adan

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Re: Dwell meter
« Reply #6 on: September 07, 2007, 02:46:04 PM »
  Thanks a lot T T. That is what I was looking for,like I said have never used one before. Dannie