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EHC replacement

Discussion in 'Technical' started by Axel, Jan 20, 2016.

  1. powerflo87

    powerflo87 Member

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    Hello Guy i got one of Alex ehc for my 04 bulldog. I hooked it up yesterday and charged the battery and tired to start it today and when i turn the ignition on it start on its on. Is that the way its post to work that way until i program it?
     
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  2. bdm7250

    bdm7250 Guru
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    Hmm... confused-face-smiley-emoticon.gif
     
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  3. KaptinAmerika

    KaptinAmerika Well-Known Member

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    If you mean you turned the key on and the starter turns over immediately then no that is not the way it is supposed to work.
    Unplug the solenoid starter wire, turn the key on and look at the LEDs on the EHC, refer to the LED schematic in the manual you received with the unit. Does the starter LED light up when you turn the key on? Now check voltage at the solenoid wire. Is their voltage present without pressing the start button?
     
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  4. powerflo87

    powerflo87 Member

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    ok Just checked the ehc box it has two blinking orange lights when i turn the key and then just two of the orange lights stay on. i checked the solenoid wire and it gave a reading of 12.1
     
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  5. Axel

    Axel Member

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    Hi Carl,

    hm, it should be almost zero when no start button is pressed. Could you remove the con at the right handle bar board and checdk if there is 5 Volt at the start button cable respect to ground ? It might happen that there is a problem with the box if the 5 volt are present at this cable. Sorry, I can not say the color yet, cause I´m outside of my office and have bno schematic with me... I´ll look on Saturday, when I´m back...

    All the best and sorry for the trouble!
    Axel
     
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  6. KaptinAmerika

    KaptinAmerika Well-Known Member

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    Which two LEDs are lit
     
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  7. Axel

    Axel Member

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    Hi Carl,

    ...have you found the time to check the button input of the start button? It is the green cable from the right handle bar board what should have almost 5 Volt against ground if the start button is not pressed.

    All the best!
    Axel
     
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  8. KaptinAmerika

    KaptinAmerika Well-Known Member

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    Just finished up.
    There is nothing functioning incorrectly with this EHC.
    Bench tested and real world tested in two bikes.
    Working exactly as the builder intended.
     
  9. Axel

    Axel Member

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    Hi Curtis,

    Thanks for the info. This is good to read (from my side...) I was not sure if my end test of the EHCs is good enough. I test the starter solenoid output of every EHC before and after potting with a 20 Ampere load for minimum 20 seconds. The current should not drop below 19 Ampere within this time. I think, this is already a bit out of the "real world" in my opinion.

    By the way, do you know the power consumption of the Dacota digital speedo? I have one client, who had problems with his ignition, what fails for seconds when he drives faster than 150 km/h with 3000 rpm for more than 1 hour. His speedo fails also in this time, what indicate that one of the internal fuses, what is responsible for speedo, ignition and tag light limit the current for a moment. This effect is not happen when he drives a bit slower below 150 km/h. Beside of the question if a japanese plastic racer would be the better option for him, I would like to know, if the power consumption of the Dacota speedo is higher compare to the original one. I assume that the internal fuse limit the current at higher rpm and think about to increase it in the next EHC´s from 1,6 Ampere to 2,5 Ampere. However, these outputs need usually 1 Ampere and I´m a bit afraid to set the fuse value to a more than a double value, cause the harness cables to the speedo and tag light are not very thick...

    All the best!
    Axel
     
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  10. francoblay1

    francoblay1 The Spaniard

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    on a Big Dog????
     
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  11. Axel

    Axel Member

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    Hi Franco,

    He told it to me. I never tried it out with my bike. I´m to old for putting my cock on the table ... ;-)

    All the best!
    Axel
     
  12. TapioK

    TapioK Well-Known Member
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    K9 and Chopper do 90mph rather nicely on Highway! What is the problem? On curves K9 becomes a bit wobbly on 90 and above, maybe since it's longer than Choppa. Or my neck bearings are just bit too lose. Only retired ppl have time to go long distances at 55mph or don't get bored on highways
     
  13. BWG56

    BWG56 Guru

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    :oldnono:Watch it there Mister, some of us like to smell the roses:chopper:
     
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  14. TapioK

    TapioK Well-Known Member
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    There are plenty of things I like to smell! Not always on boring highway heading to places though.
     
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  15. SKOGDOG

    SKOGDOG One of the old ones.

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    Whaddya mean?? Blacktopper and I are retired and we cruise at 83-84 mph routinely, altho I guess 150 kph is 92 or 93 mph.
     
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  16. francoblay1

    francoblay1 The Spaniard

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    I´ve done over 90 miles several times no problem... all I am saying is the RPM is quite higher than 3k @ 90 + Miles/h.

    This guy´s bike @ 5500 rpm on 6th gear.... must be a rocket!!
     
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  17. TapioK

    TapioK Well-Known Member
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    5500, that is pretty close to the red line? Don't remember and never pay attention to tachy... I think I remember seeing yellow light when speed is around 120. That is too much speed for K9, not Relaxing anymore and I don't think our engines take that for any longer periods, heck I've been told I'm lucky if my S&S takes 85-90 for 4 hours without breaking.
    Well, my engine is in a shop actually so maybe they are not as strong as I thought.
     
  18. dentdude36

    dentdude36 Guru

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    Why so fast what's the rush? I ride for enjoyment not to see how fast I can get someplace, also this thread is about ehc replacement nothing to do with speed so let's stick to th the topic if you wana talk about speed start a new thread.
     
    #658 dentdude36, Apr 18, 2017
    Last edited: Apr 18, 2017
  19. francoblay1

    francoblay1 The Spaniard

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    :oldhardlaugh::oldhardlaugh::oldhardlaugh: :chopper:
     
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  20. Axel

    Axel Member

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    Hi Kevin,

    Yes, it´s a bit away from my question but funny anyway...

    Btw, I agree absolute with your statement "riding for enjoyment" (whatever it mean for individuals...) :)

    All the best!
    Axel
     

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