bean can ignition advance module rebuild

Discussion in 'Old's Cool' started by datchew, Sep 22, 2008.

  1. datchew

    datchew Don't buy from Brad

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    Before I begin, has anyone used the motobins advance springs in this rebuild?
    I've received info that these WILL NOT work and would like to hear more before I use them.
    #1
  2. Rob Farmer

    Rob Farmer Long timer

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    Why don't they work?
    #2
  3. datchew

    datchew Don't buy from Brad

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    There's an echo on here. :lol3


    Just messing with you Rob. I'm trying to find out that same question.
    Oak told me they don't match the bosch original springs and that they screw up the advance curve of the unit.

    If Jason sends his down, I guess i could rebuild 2 cans... 1 with motobins and 1 with originals and then have a comparison... but then, to be meticulous, I'd feel the need to find a dyno and that's just too much like real work.

    So, I wanted to get other info/validation/invalidation before I jumped into this.
    #3
  4. camgregus

    camgregus riding gently now

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    you want another one to rebuild once mine is welded?

    :lurk
    #4
  5. datchew

    datchew Don't buy from Brad

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    Lemme see how the first one goes and then check with me again.
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  6. datchew

    datchew Don't buy from Brad

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  7. Rob Farmer

    Rob Farmer Long timer

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    So much mess in so little time. That's got to be some kind of record :D
    #7
  8. datchew

    datchew Don't buy from Brad

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    Not for me. I can make a mess with the best of them.
    Normally, I have cleaner rags, but I wanted to show some team spirit for Stagehand. :lol3
    #8
  9. Solo Lobo

    Solo Lobo airhead or nothing

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    add another to the list... I see a new business in your future!
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  10. datchew

    datchew Don't buy from Brad

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    Business? I thought you guys were just donating. :deal


    he he he. The easy part is done. Disassembly. Now for the cleaning and soldering (did I ever mention how much I hate soldering?)

    I'll let you know how it goes. A side business could assist with parts for the /2. Hmmmmm...
    #10
  11. Stagehand

    Stagehand Imperfectionist

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    yeah- Rick Motorad's guy isnt doing rebuilds anymore- this could be a great sideline for you. Salvation comes in a Bean can? :lol3
    #11
  12. datchew

    datchew Don't buy from Brad

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    Nice. I like it.
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  13. DucatiPete

    DucatiPete In denial

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    I just got back from a 2500k trip and my g/s is not returning to idle (as quickly) as it should... suspect stretched advance springs due to sustained high speed running (and old/original springs).
    I had a similar problem when i first got the ol gal on the road which i sourced to corroded advance weight pins (another case of little/improper maintenance by PO). While i was in there i noticed the springs were decidedly dodgy but replacements weren't available then.
    Our BM parts guys (Munich Motorcycles) now offer them - i suspect they're the same as offered by m'bins etc.
    I just ordered them so hopefully they'll arrive soon (tomorrow) so i can install and get back to normal...
    meanwhile i might get a new trigger sender and perhaps i'll do that install too. But that's a little more involved... ie drilling/replacing rivets i think.
    For more info re this stuff check out these sites:
    http://maniac.deathstar.org/~flash/ig_trig.html
    http://www.geocities.com/fwarner_au/mc_things/bmwr_ign_sensor.html
    The second one has a method of adding an additional sensor - it's a bit too involved for my simple self. I figure if mine has lasted almost 30 years then one is probably enough. But a new one might just guarantee another couple of decades anyhow.
    There's another really good replacement description (with v good pics) is out there by Robin Frankham. I can't find it and have emailed Rob to see if it's still available. I'll post it here if/when i get it.
    #13
  14. datchew

    datchew Don't buy from Brad

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    Yes, neck deep in that right now. It SUCKS!!! Dammit I'm frustrated. :kboom


    With me, it's the hall sensor. bike just cuts out sporadically. Springs look good though.
    #14
  15. DucatiPete

    DucatiPete In denial

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    Got the sender - good price: $AU20.

    Debating whether to replace it or just the springs - s'pose i should seein as i have it now... but how much drama is involved???

    Waiting for your story datch b4 i get m'self all worked up too!

    :ear
    #15
  16. Frank Warner

    Frank Warner Traveller

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    Possible .. but check carby diaphrams.. and weight sticking .. you WD40ed them? If you did then that is why they stick .. clean out the WD40 gunk and then put in a bit of engine oil .. or nothing .. don't use WD40 in there.


    -------------------
    datchew - with that flame out you'd better lay off the beans..
    #16
  17. datchew

    datchew Don't buy from Brad

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    Ya man. How'd you know I ate mexican food for lunch yesterday? :lol3
    I put it back on the table before the rage hit so it didn't get smashed to bits.
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  18. camgregus

    camgregus riding gently now

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    mine, one of the ears that hold it on broke off. Have a guy TIG welding it, but the TIG has to be serviced. Has anyone reverted to points?

    Seems like a next step option.
    #18
  19. datchew

    datchew Don't buy from Brad

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    From the little i've looked into it, you can't convert just the can to points.

    If you don't want to endure the pain of a rebuild, in my opinion, it's easiest to just upgrade to electronic ignition.
    #19
  20. Frank Warner

    Frank Warner Traveller

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    Umm .. you already have electronic ignition .. you mean other electronic ignition. ...

    A new bean can here was some $300 ,,,, but that was many many years ago .. But I think that or second hand bean can would be the easiest, simplest and probably cheaper than reverting to a points system ... (for a points system you need a bean can with points - that interfaces to the offset dirve you have, and is the right size to plug the hole in the crank case. Wires up to a new coil (the old one will blow up if driven by points) ..


    Beer and Tv time.
    #20