If it was a typo then you can run it with the cap and rotor off by just holding your wire to the HT terminal and that would eliminate the cap land rotor from the equation. Problems rooted in the magneto are sometimes obvious, or can seem like all sorts of other things. things we think matter when it comes to magnetos and. We can adapt for most applications. patterns for shims, gaskets and bearing The result in high resistance will reduce the current flow in the primary winding and reduce the magnetic flux which adversely effects the secondary winding output voltage. I would narrow the plug gaps to .020" and see what happens. If your magneto is loosing spark after a short amount of time running, or is hard to start it is most likely a condenser failure. So I'm having an issue that is frustrating me and my mag rebuilder. The irony here is that usually these magnetos fail to spark. I'll try the 3/16" gap test. Our preferred gap for spark testing in fresh air is 6 mm. heavier the better. The spark is fine on this coil, keep in mind the faster you turn a mag, the better the spark. Now let the slip ring dry out with the pick-ups still removed. BTH mags utilized condensers made from mica. V-TWINS Magnetos are always a compromise, usually producing a strong spark to one cylinder and a weaker one to the other. Thanks again. Regrettably, some Acrobat .pdf files might not Links to some interesting I tested the HT wire and spark plug and both are fine. Lucas vertical magneto in good condition and sparking. With the engine running, place your hand over the pick-up with the same hand also touching the magneto body. This disables the magneto to reduce the risk of electric shock and fire. A fair amount maintenance and troubleshooting of a magneto can be done with the magneto in situ and without any special tools or equipment other than a multimeter. With the points fully open, adjust the points gap to 0.012 (0.3 mm). Copyright 2000-2020 by, ---------- Post added at 08:44:59 AM ---------- Previous post was at 08:39:49 AM ----------. 0000001913 00000 n This is really common on original units as the Lucas condensers were made from wax paper and foil. You should not feel any tingles in your hand. The other plug cap should give a reading that is infinite (OL) or extremely high. Check the state of the points surfaces. Replace the main-body earth brush, if applicable. Values vary considerably depending on the make and model of magneto and who wound it. the brass is in the wrong place, as a result of a magneto with a segment-type slip-ring having an incorrect cam fitted or having the wrong direction of slip-ring fitted. If you are sure that all earth brushes are removed, and if either the magneto has a fibre drive pinion or the drive pinion/sprocket has been removed, you can now check the effectiveness of the bearing insulators. Lucasworkshopinstructions-otherstuff. Brightspark Magnetos - Home This could be because: the brush isnt projecting far enough to touch the slip ring, so check that as best you can. demand to 'perfectly functional' or 'as-new' detailed support we offer. If you can see the slip-ring through the pick-up hole in the main housing, check that the brass ring or segment of the slip-ring is brass coloured (albeit possibly a bit dirty or tarnished), but not completely black. Upgrade your membership to Turn the armature in its proper direction of rotation until the contact-breaker points are just starting to open. Translations provided by the Google (Japanese) 0000002847 00000 n Also, with the points open, check that there is an open circuit between them; if fitted with a Brightspark EasyCap, it will take a little while for the resistance reading to climb off the scale. Replace if necessary. Blue spark is great but if it can only jump .03" when external of a cylinder with no compression pressureswhen you add the compression and fuel mix it will fall on its face. Lucasworkshopinstructions-magnetosLucasworkshopinstructions-otherstuffLucaspartslistsLucasATDspecificationsBTHinstructions&partslistsM-LBookletsMagntoFrancedocumentationRobertBoschDocumentationAmericanBoschworkshopinstructionsPatentsBooksandlearndpapers, Redesigned contact breaker for ring cam models, SR1, SR2 & SR4 magnetos (workshop Learn how and when to remove this template message, https://en.wikipedia.org/w/index.php?title=Ignition_magneto&oldid=1150712364, Short description is different from Wikidata, Articles with unsourced statements from January 2023, Articles needing additional references from January 2023, All articles needing additional references, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 19 April 2023, at 18:38. and overhauls. Contact-breaker Re-installation and Points Setting. Please get in contact if you know anything about aerograph compressors especially if you have technical drawings.Last, but not least, if you want to receive notifications when more videos in this series are uploaded please subscribe to the channel. or detailed guide to maintaining and Always good to learn how to check lucas parts, one of the weaker parts of a triumph motor.. Classic Cycles inc. 2199 N. Batavia Suite J. With larger gaps, if the magneto is provided with a safety gap, the spark is more likely to jump there where it cant be seen, so thats a waste of time. 0000000783 00000 n Pick-up, HT Lead and Plug-cap 1 BTW, Michael, that's a darn clever trick/solution! 2. Don't want this buried as I 'm hoping for some possible answers today. Language links are at the top of the page across from the title. If nobody is available, then you can make a test plug by removing the earth electrode from an old, but functional, sparking plug. Joined: Oct 2009. Magneto Parts Archives - Rex's Speed Shop Due to the inevitable losses in the system, this oscillation decays fairly rapidly. Also, some pattern contact-breaker assemblies are too large at the fat end and need to be filed or ground to size. Brightspark Magnetos Ltd disclaims responsibility for any errors slip rings and pick-ups for Lucas and BTH To have the discharge go arc back into the coil itself or the mag housing causes some serious damage. part-exchange. As the field collapses rapidly there is a large voltage induced (as described by Faraday's Law) across the primary coil. We also have kits for more unusual magnetos, such as the BTH, ML, Magnetos France, Morel, Lucas wader, Lucas KVF, etc., and for cars. Just to reinforce a point here of something very well done that you did in the how-to: when you're testing a mag like this, ALWAYS have the plug wires hooked up with a gap (or plugs) to ground so that energy has somewhere to go. i found that is a cheaper, easier way to go than doing it my self with refurbished parts. However, typical signs of magneto problems are, among others: -- Bike hard to start. 0000005012 00000 n Nous

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