One for electrics gurus

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by mousitsas, Mar 19, 2013.

  1. mousitsas

    mousitsas Long timer

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    I would like to intercept the rpm signal on an SE. What are the options?
    Google search returned something about pin #6 of the cluster plug. What signal is this? A frequency pulse or an rpm-dependent voltage?
    Alternatively, would it be possible to intercept the stator signal and extract an rpm-dependent frequency from it?

    Many thanks for your input.
    #1
  2. Motomedic

    Motomedic Over-caffeinated Raconteur

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    It's a pulse-5vdc. Happens pretty quickly too- have a good meter set up in the proper range. Auto-ranging takes too long. :D
    #2
  3. mousitsas

    mousitsas Long timer

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    muchas gracias!
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  4. Remmie

    Remmie Been here awhile

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    Look at this like. It’s Dutch. But, if you look at the pictures you see what I mean.
    This is the cheap version of getting the rpm signal from the cluster plug.
    It works

    http://forum.lc8.nl/viewtopic.php?t=4222&start=45

    Remmie :nod
    <!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:Standaardtabel; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]-->
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  5. mousitsas

    mousitsas Long timer

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    Thanks Remmie. It is the yellow wire then, right? What I cannot tell is if it already exists in the harness, or if you installed it there instead.
    #5
  6. Remmie

    Remmie Been here awhile

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    <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:HyphenationZone>21</w:HyphenationZone> <w:punctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--> The yellow wire is a new installed and connects the tachometer on the dash.There is no pin in the plug for the Tachometer.

    So you have to take the plug apart and place a new pin in it. But to find e new/used pin is the problem.What you see is e cheap version without the pin.

    Remark on this picture: You have to pull the wire back in the plug so it’s just inside the plug. When you place the plug back it connects with the (male) pin from the unit.
    [​IMG]

    [​IMG]

    Remmie :D

    <!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:Standaardtabel; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]-->
    #6
  7. mousitsas

    mousitsas Long timer

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    That is excellent. Thanks for your time!
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  8. Wizard

    Wizard Adventure Rider

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    Where can you buy a tach in the USA like pictured above??

    Thanks,
    Jim
    #8
  9. pdxmotorhead

    pdxmotorhead Long timer

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    Wicks or Aircraft spruce I believe there is a small one for ultralights.. I saw one on VDO's web page too I think.. Was lookign for one for a small race car a while back..

    Dave
    #9
  10. geometrician

    geometrician let's keep going...

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    Most every tachometer on Japanese (& most Euro) bikes operates directly from the primary of the ignition coil.

    A search of fleabay or your local motorcycle salvage operation should provide plenty of cheap, easy choices. Just pick the one that fits your mounting ideas/requirements- a little wiring (hey you want the light on in there don't you?) some spraypaint & you're good to go!
    #10