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TCI Replacement 2020 It Works

Discussion in 'The Garage' started by Team Junk, May 15, 2020.

  1. It occurs to me Earth has a permanent magnet system, so who are we to argue against them?
     
  2. 80650xs

    80650xs XS650 Member

    I want in on this. I have an '80 650g. Gonzo box has been ordered I'll post back with results when It gets here
     
    MaxPete and Jim like this.
  3. 313-Matt

    313-Matt XS650 Member

    Hey, everybody. First time poster. Wasn't aware you guys were out here. Anyway, I have a dead box on my '81. (Two now, actually.) I ordered a cheap GN250 box and will wire up a pigtail this week. Jumping on the Gonzo bandwagon! Thanks for all the hard work, guys.

    -Matt
     
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  4. Jim

    Jim Beyond the edge is the unknown. Here be Dragons XS650.com Supporter Top Contributor

    Keep us posted. The more feedback we get, the better we can make this work.
    ..... and welcome to the madhouse. :D
     
    MaxPete, gggGary and 313-Matt like this.
  5. gggGary

    gggGary I'm listening, change my mind XS650.com Supporter Top Contributor

    It's actually a VERY low frequency AC setup.......:cool:
    " Earth has settled in the last 20 million years into a pattern of a pole reversal about every 200,000 to 300,000 years," :D
     
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  6. Jim

    Jim Beyond the edge is the unknown. Here be Dragons XS650.com Supporter Top Contributor

    .000000000000000000000000000000000007Hz to be exact. :rolleyes:
     
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  7. rickthefix

    rickthefix XS650 Member

    9
    13
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    N GA USA
    I've been repairing the XS650 TCI's for quite a few years. Not as many last few years as I used to.
    Not posted here in several years, but Marty sent an email to "The List" that I picked up on and just started reading this thread.
    Interesting read so far but only 4 pages in. Too tired to focus or retain right now so will continue when time allows.
     
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  8. itschrisb

    itschrisb XS650 Addict

    I just ordered two boxes to try. My ‘83 is currently not getting spark. Out of curiosity what is the failure rate on the stock tci pick up? And is there an affordable replacement? I didn’t see anyone posting about a different pick up adapted to a TCI bike, only to a points bike.
     
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  9. Jim

    Jim Beyond the edge is the unknown. Here be Dragons XS650.com Supporter Top Contributor

    The one we finally settle on for a points bike will also adapt to a TCI engine.
     
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  10. itschrisb

    itschrisb XS650 Addict

    okay cool, I have a feeling my pick up is dead that’s why I was curious. I have to retest it to be sure this week.
     
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  11. jetmechmarty

    jetmechmarty What should I put here? XS650.com Supporter Top Contributor

    I don't have any direct evidence, but I believe it is very low. The pick-up coil has not been available for many years. Yet, these bikes remain on the road and I don't hear of failures and I consider myself active in this community. As @Jim said, "They work until they don't." Two coils in the pick-up unit. All of the pins should should some resistance with an ohmmeter. A failed coil shows up as an open circuit. I believe that's the only failure mode.
     
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  12. itschrisb

    itschrisb XS650 Addict

    Okay that’s good to know. Mine did show up with some resistance so it most likely isn’t bad.
     
  13. Jim

    Jim Beyond the edge is the unknown. Here be Dragons XS650.com Supporter Top Contributor

    Checking 'em is easy... there's a center tap that branches off to the two coils. 3 wires... you should get 700Ω on each coil and 1400Ω across both of 'em. It's only 3 wires...ya don't even need to know which is which.... if you can hit those numbers, you're golden.
    I've got 2 here where one coil (or the other) is open. I'm not aware of any other failure modes... anyone?
    Like Marty... no evidence, but I believe the failure rate is low.
     
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  14. gggGary

    gggGary I'm listening, change my mind XS650.com Supporter Top Contributor

    Yes an open reading is failure mode, fairly rare but I've sold a few over the years. a pinched or damaged wire would be my first suspect in an open coil failure. Found a couple of those, typically near the sprocket. 5T and I have both found a "one strand left" pick up wire creating poor running.
    A weak magnet in the rotor is reported more often. Not certain if it's actually a weak magnet or a gap issue tween rotor face and pick up coil........
     
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  15. itschrisb

    itschrisb XS650 Addict

    not to sound dense but what exactly do you mean by across each coil and across both? If we are talking wire color, I have a grey, black, and an orange. Grey to black is one coil, orange to black is another coil, and grey to orange is across the coils? Would that be correct?
     
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  16. gggGary

    gggGary I'm listening, change my mind XS650.com Supporter Top Contributor

    yup. But like Jim sez check all three possibilities if two read 700 and one reads 1400 +- 10% you're good.
     
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  17. itschrisb

    itschrisb XS650 Addict

    awesome thank you! I’m excited to get these boxes and wire them up. I have 3 Honda mp08 coils coming from eBay as well. Hopefully my pick up isn’t bad and I can get this bike running ASAP. I will keep everyone posted on my results as well.
     
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  18. kshansen

    kshansen XS650 Guru Top Contributor

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  19. gggGary

    gggGary I'm listening, change my mind XS650.com Supporter Top Contributor

    No but you might need to reflash the generator on the farmall. :)
    Oh and go around and turn all all your electric plugs upside down otherwise the electrons going backward will leak out on the floor and stain the carpet.
     
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  20. kshansen

    kshansen XS650 Guru Top Contributor

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    Well I'll have you know the Farmall has been upgraded to a 10SI Delco generator so as it puts out AC current it should adapt ok. Now for the for the magneto that might be a different story! Have to consult the ouigia board on that detail!
     
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