magicmat Posted January 19, 2008 Report Share Posted January 19, 2008 im building my bike and i cant get the thing to spark !! its winding me up ! the frames been powder coated but i havn't taken the pant off any of the lugs for the grounding. (why im thinking no spark) However ive been doing continuity tests between the engine and bolts on the frame and there positive. So its making me think the engine and frame are connected therefore the engine is grounded? but still no spark. Multimeter - - Getting a voltage output on the magneto cables. - but im not getting anything on the cable that goes to the coil (the one that comes from the 'advance' box. So is it cos of the ground or my advance box? I've tried different plugs and nothing, cut the ht lead down alittle and nothing. Reason i havn't taken the paint off yet is because i dont know where to mount the black box, (and the ground point is next to it, whereever that is. looking for abit of advice really guys. If you can offer any ?? - btw, in the second photo where i put the clip, that a good grounding point? (been using the bolt on the coil) Quote Link to comment Share on other sites More sharing options...
betapete Posted January 19, 2008 Report Share Posted January 19, 2008 is the killswitch working? make sure the frame is bear metal where the earths go to Quote Link to comment Share on other sites More sharing options...
magicmat Posted January 19, 2008 Author Report Share Posted January 19, 2008 ah killswitch, its not stuck down. I think ill grind the paint off in the second photo, where the bracket is... Quote Link to comment Share on other sites More sharing options...
barrybaines Posted January 19, 2008 Report Share Posted January 19, 2008 Try sanding down a part of the frame you will never be able to see! and even if you don't use it for the permanent Earth you can always chuck a blob of paint on it to protect it Quote Link to comment Share on other sites More sharing options...
tombo46 Posted January 19, 2008 Report Share Posted January 19, 2008 I had trouble when re-building my beta. turned out to be the earth yet when I tried earthing the coil to several points it still wasnt working. to check that it definatly isnt a problem with the earth, take the ring connector that is meant to earth on the frame and run a wire from it and connect it to the negative termninal on a battery, also make sure your holding the plug against the cylinder head when you check it. earthing can be very very tempremental so you need to make sure that definatly isnt the problem before you go messing around with other things. Let me know how ya get on. Tom Quote Link to comment Share on other sites More sharing options...
betapete Posted January 19, 2008 Report Share Posted January 19, 2008 ah killswitch, its not stuck down. ohhhhh dear, by test killswitch i meant test it lol, not see if its stick down!!! multimeter on continuity test, wire on each probe, button in operating position, no continuity, button depressed.... continuity Quote Link to comment Share on other sites More sharing options...
magicmat Posted January 19, 2008 Author Report Share Posted January 19, 2008 (edited) Right im getting continuity when i press the switch down. I thought that it would be the other way around. Ie the circuit would be broken when i pushed the button. ? Also i've filed the paint off a lug. sanded it right down... still no spark but good continuity. Ill try the battery idea in a minute Edited January 19, 2008 by Magicmat Quote Link to comment Share on other sites More sharing options...
magicmat Posted January 19, 2008 Author Report Share Posted January 19, 2008 will a 9 volt battery do it? Quote Link to comment Share on other sites More sharing options...
magicmat Posted January 20, 2008 Author Report Share Posted January 20, 2008 B*****ks knows, tried that nothing. I at a loss. btw im not getting continuity between the wire to the coil and any of the earths. Im also not getting continuity across the black box. Im at a loss Quote Link to comment Share on other sites More sharing options...
betapete Posted January 20, 2008 Report Share Posted January 20, 2008 hold on hold on before you plug it into the mains and set your house on fire, reason for the continuity when button is depressed is that it earths signal from pickup.exciter coil to frame, rather than coil, let me have a look at the diagram a , ok, blue and black wire from stator, attach multimeter across these two set on 20v DC, make sure plug is out (easier to kick)then get someone to give big boot, watch display and you should get voltage, if not then something is up with exciter/pickup, if voltage there, re attach wires to advance box then keeping meter set the same, ground one probe, then place other to red, and kick, ther again should be voltae, other way to do it is by measuring resistance and comparing with what is on diagram, but this only really works with quality multimeters Quote Link to comment Share on other sites More sharing options...
magicmat Posted January 20, 2008 Author Report Share Posted January 20, 2008 (edited) ok. Betapete i will take minute. Right. ***quick note, i have not got anything attached to the yellow cable from the stator, this is because the voltage rectifier looks knackered (yellow cable is missing) so ill order another at some point. Thought this cable was just for the thermostat and fan and wouldnt affect the spark, so i left it out*** Multimeter on stator - blue and black cable - gives reading of 0.30 at the most. Thing is i cant get a reading on the red cable that goes to the coil, i cant even get continuity between that cable and any earth (in continuty test im getting 570). I do get continuity between the red cable and the other end of it at the plug that goes into the red box. so the cable isnt broke. I have two conclusions 1 - the stator is giving out too low a volatge? 2 - the black box (advance module) is knackered? ... Any more advice betapete? apart from take it to a mechanic ( i may take a trip to gasgas at this rate !) Cheers Matt just done a test - with a 9 volt batter on one end of the advance module and a multimeter on the other - hope this makes sense. On stator side: battery +ve on the blue pin connector -ve on the black pin connecotor On the other side Nothing stator side Battery +ve on black connector - ve on blue cable Only one reading on the other side Red Probe Blue cable pin Black Probe Black cable pin Gave a reading of 0.60 from a 9v battery. This seems odd to me. I thought the battery would work on the blue cable was the black would be an earth. But no. Also the otherside. That says to me that the kill switch is getting power and not the coil wire!!?? (maybe i should uncrimp the blue wire and send it to the coil ! ) Betapete, can you shed anylight on this? ill put the wiring diagram below so you can look at that too. Edited January 20, 2008 by Magicmat Quote Link to comment Share on other sites More sharing options...
copemech Posted January 21, 2008 Report Share Posted January 21, 2008 You must have continuity between coil(red) and frame(earth) with red disconnected from box! 1.5 ohm is the spec in the diagram. Be suer the coil is mounted to clean metal with the bolts! Quote Link to comment Share on other sites More sharing options...
magicmat Posted January 21, 2008 Author Report Share Posted January 21, 2008 red plug out of black box - Continutiy between red coil wire and outside of coil. Coil is not mounted to bare metal but i am getting good continuity. But im not getting power to the red (coil) wire anyway ! Im thinking the black advance box is broken if im getting power to it, but non from it. ? Quote Link to comment Share on other sites More sharing options...
betapete Posted January 21, 2008 Report Share Posted January 21, 2008 yep, 99% sure that your problem, you not know anyone with one you could borrow off their working bike and try out? Quote Link to comment Share on other sites More sharing options...
magicmat Posted January 21, 2008 Author Report Share Posted January 21, 2008 Seems like thats the prob doesnt it. No i don't know. Ill talk to gasgas and see if i can order one with the potential to return. Cheers betapete Matt Quote Link to comment Share on other sites More sharing options...
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