Coil Sticks no more!

Discussion in 'GS Boxers' started by HackyMoto, Aug 4, 2011.

  1. HackyMoto

    HackyMoto TEAMUSAGSTROPHY2012

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    I just did 4000 miles from sea level to 9000 feet temps from upper 50f. to 100+f. and loads all up and down the scale running supreme pump gas. I’m happy to report that the coil mod worked without a problem. It worked so good it got me first place in the Rawhide’s Adventure Rider Challenge on day 1:clap
    So far I know of two coil mods a friends twin spark 04’ 1150 and mine with no problems. So there you go. Happy motoring. :ricky


    Side note:
    I just placed 2nd in the GS trophy on the west coast and if you are on facebook I would like your vote to represent the U.S.A. and the Motorcycle community in the GS Trophy Challenge. Vote at BMW Motorrad USA facebook page. Click on my pic. to vote for me. Note not iphone friendly.
    Thanks all :thumb

    Me Rippin it up in Moab.
    [​IMG]
    Photo by Overland Motorsports Photography
    #61
  2. pcwirepro

    pcwirepro Aspiring Adventurer

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    I just dropped $240.00 on two new sticks. They will be my last.
    #62
  3. scooteraug02

    scooteraug02 Dog Rancher

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  4. PeterW

    PeterW Long timer

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    No need for the cap unless you have points ignition.
    AFAIK, those bikes have an electronic ignition.

    Pete
    #64
  5. def

    def Ginger th wonder dog

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    Hackey, I attempted to vote twice but the Face Book Voting Police wouldn't allow it.

    Good luck.

    def
    #65
  6. Sporttour

    Sporttour Been here awhile

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    Thank you!

    I took a different aproach:
    Got 2 stick coils from a guy who was parting out a 1200, then I bought two straight 27 inch coil lead wires from autozone, after some creative use of zip-ties I fixed them to the subframe, one on each side of the airbox.
    I spent less than $60 including the coils. Best part: I didn't had to mess with the conectors.. 6,000 mi later I'm still a happy camper:evil
    #66
  7. pcwirepro

    pcwirepro Aspiring Adventurer

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    Dam. I thought I had an original idea with that one. Cheap sticks can be had from FleaBay. I found a bunch of stick coils for sport bikes.
    #67
  8. jdbski

    jdbski old but getting younger

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    Pictures please
    #68
  9. Sporttour

    Sporttour Been here awhile

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    I will post them in a couple of days since I have to take of the tupperware; mine is an '04 R1150 RT
    #69
  10. Jammess

    Jammess Native Oregonian

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    Well, I did the conversion to Ford C.O.P and she no run good at all. It is as if the primary plugs are not there and it runs only on the secondaries. Oh, this is an '04RT I'm playing with. I pull the primary plugs and ground them then turn over the engine and I get spark on both plugs so it must be that the spark is just not strong enough when under compression. I didn't pay any attention to which of the two wires from the motronic I connected to which of the two coil terminals. The coils I am using are Accel coils I bought on Amazon. I am at a loss.....HELP!
    #70
  11. pcwirepro

    pcwirepro Aspiring Adventurer

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    That's one hell of a first post. What wires did you use?
    #71
  12. johnjen

    johnjen I've Been Resigned

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    Um, unless I'm missing something here, they are called primary and secondary coils for a reason. The secondary is timed to fire later than the primary which may account for the poor performance.

    JJ
    #72
  13. Jammess

    Jammess Native Oregonian

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    lol..lol..I guess I haven't had much to say on this forum come to think about it. As to what wires did I use, I connected the two outside wires from the stick coil connector to the primary side of the Ford coil. The center (third) wire is a shield ground used by the original stick coil I believe.
    #73
  14. Jammess

    Jammess Native Oregonian

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    Evening John, I was referring to the center spark plugs which the stick coils connect to as the primary plugs and the two plugs located on the lower side of the head are commonly referred to as secondary plugs fired by conventional coils. I'm not fooling around with the secondary plugs or secondary coils at all just the stick coils. I also refer to the primary and secondary windings of each stick coil. Going to reverse the connections to the Ford coil-on-plugs tomorrow just to see if that makes a difference as I think the low side of the secondary winding is connected to the low side of the primary winding. If that makes sense.

    Also, I thought both primary and secondary plugs fired together, no time difference. I'm pretty sure my problem is a weak spark on the primary plugs that gets blown out when under compression. Hey, worse case is I go back to the original stick coils.
    #74
  15. johnjen

    johnjen I've Been Resigned

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    Ah I see.

    And yes the primary and secondary inputs to coils do make a BIG difference. Primary coils usually measure under 10 Ω (sometimes well under as in 0.5Ω) and the secondary coils measure in the KΩ (thousands, as in 10K ±). So wiring them in backwards will result in no to extremely weak spark. If you know how to use a DVM you should be able to readily tell the difference.

    JJ
    #75
  16. pcwirepro

    pcwirepro Aspiring Adventurer

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    How did you connect the wires to the primary plugs? Did you buy or build wires to go from the spark plug to the new coils?
    #76
  17. roger 04 rt

    roger 04 rt Long timer

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    I guess you knew primary from secondary, and your question is about whether there is a polarity to the two primary wires.

    The three wires, according to my schematic disk that you can see here ( R1150 Electical Schematics) at X9506 are: primary-side +12, primary-side trigger, and secondary-side ground.
    #77
  18. Jammess

    Jammess Native Oregonian

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    And a good morning pcwirepro. I bought two spark plug cables (BMW) that are for the R1100RS which doesn't use stick coils then it was simple to connect them to the high voltage terminal on the Ford coils.
    #78
  19. Jammess

    Jammess Native Oregonian

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    Hello Roger. Hey, I'm an Oregon Tech graduate so yup, I know primary from secondary.:1drink
    #79
  20. HackyMoto

    HackyMoto TEAMUSAGSTROPHY2012

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    Oboy here we go. more info needed was the bike running bad before the swap?




    #80