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Thread: Indian 249 Scout Mag Problem

  1. #1
    Join Date
    Sep 2012
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    Saltsburg PA
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    Default Indian 249 Scout Mag Problem

    Original Edison magneto on this 249 Scout. When I bench test the mag by clamping and spinning it by hand I get nice bright blue spark from plugs connected to both ports. When I bolt it on the bike I get no spark. Everything is same, just bolted on bike instead of clamped in vice. Is there something obvious Iím missing here? I had it off 3 times just to make sure it wasnít some freak thing.
    Jason Z
    AMCA #21594
    Near Pittsburgh PA
    Allegheny Mountain Chapter http://amcaamc.com/

  2. #2
    Join Date
    Oct 2011
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    Are you connecting the ignition wire after installation,if so check that the wire has no continuity to ground in the run/on position ,or just try it with the wire off.
    Tom

  3. #3
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    When bolted on is it insulated in some way, gasket, paint, etc?
    Robbie Knight Amca #2736

  4. #4
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    Quote Originally Posted by tfburke3 View Post
    Are you connecting the ignition wire after installation,if so check that the wire has no continuity to ground in the run/on position ,or just try it with the wire off.
    Tom
    Did not connect ignition wire Tom

    Quote Originally Posted by Rubone View Post
    When bolted on is it insulated in some way, gasket, paint, etc?
    I thought about that. Not gasket and Verified with ohmeter so no problem there.
    Jason Z
    AMCA #21594
    Near Pittsburgh PA
    Allegheny Mountain Chapter http://amcaamc.com/

  5. #5
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    Oct 2011
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    Maybe you are spinning it faster in the vise than with the kicker.
    Mags can be a pain,but are good if you dont have electric on the farm to charge a battery.
    Tom

  6. #6
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    Quote Originally Posted by Skirted View Post
    Is there something obvious Iím missing here?
    Jason (well you asked for it!).....is the plug grounding properly when it's on on the bike? :-)
    Pisten Bulley is Harry Roberts in Vermont.

  7. #7
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    Quote Originally Posted by tfburke3 View Post
    Maybe you are spinning it faster in the vise than with the kicker.
    Mags can be a pain,but are good if you dont have electric on the farm to charge a battery.
    Tom
    crossed my mind but I was amazed how little speed this one took to create spark. Also with no plugs in engine Iím kicking it over pretty fast and figure itís spinning much faster but I kicked slow and fast just to see if any difference.

    Quote Originally Posted by pisten-bully View Post
    Jason (well you asked for it!).....is the plug grounding properly when it's on on the bike? :-)
    yes Harry definitely made double sure itís grounded and even grounded to mag case just for sheetz and giggles.
    This is my second Vertical and thought I got pretty well schooled on mags from the first one. Got this bike last fall on pick. Only sheet metal on it was gas tank but we found nearly everything for it scattered about in the basement. Had a big knobby tire on back. Had it running last fall after cleaning seeds out that were stuck under valves holding them open. Ran good but then sputtered home and it died pushing it the last bit. My wife named it Otis. I got it all back together over winter so it looks presentable and figured the ignition problem would be simple and weíd be riding it by now. These have a battery and gen for lights and I even disconnected both just in case there was some weird short reacting with magnetic field. Thatís reaching I know but this too strange. Sometimes when something seems complicated something simple is overlooked but the simple list is dwindling.
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    Last edited by Skirted; 04-07-2019 at 04:13 PM.
    Jason Z
    AMCA #21594
    Near Pittsburgh PA
    Allegheny Mountain Chapter http://amcaamc.com/

  8. #8
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    Aug 2004
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    Same plug wires as the bench test? Not resistor are they?
    Robbie Knight Amca #2736

  9. #9
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    Quote Originally Posted by Rubone View Post
    Same plug wires as the bench test? Not resistor are they?
    Yes same wires. They are copper. I did the R&R test the 3rd time with a different set of wires I had and result was same. OK on bench, no spark on bike. I have to pull the cap to install the mag, but leave the wires attached to cap so there is no disconnect and reconnect. The cap seats perfectly and is in good shape. Other than the gear being meshed and in contact with its driver gear and the housing being bolted up I can't see any other difference.
    If I get desperate I'll pull the mag from the other bike and try it but hate to disturb things when working. Thanks
    Jason Z
    AMCA #21594
    Near Pittsburgh PA
    Allegheny Mountain Chapter http://amcaamc.com/

  10. #10
    Join Date
    Oct 2011
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    452

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    Any chance there is some end to end or side play in the shaft that is not having an effect when spinning by hand but some binding or side load installed causing the problem?
    If you mounted with cam cover off and spun it by hand,without the idler or cam(no to familiar with cam chest on 249)what would be closest to the in the vise test.
    Tom

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