Moderators: DAVID THOMPSON, phlat65
Puffs wrote:Well, resistivity values of the windings in a coil (particularly a 6V coil) are quite low and may be difficult to measure with a common multimeter. MZ does not give values, but they do mention the possibility of damage to the isolation due to overheating (contact on with points closed). If you have another one, it's easy to try, but you'd need another coil known to work.
For reference Lothar's excellent document: https://pic.mz-forum.com/lothar/Elektri ... ektrik.htm, where he mentions in section A.4.3 a value of 1.5±0.2Ω for a 6V coil.
With my old multimeter I measure 5.8Ω between the poles of the primary, on a (working) 6V coil from my Jawa. So I'd guess that's the range you should see: from 1Ω to 6Ω. At any rate, not 0Ω.
But I'd still try to see if I could get a spark with a non-R plug. Or just take the cap off & hold the HT lead a few mm from the head, then you should see a spark. You don't need to rotate or kick the engine, just lift the points (isolated, & with ignition on obviously). Or just keep the points closed & break the connection at one of the primary connections, that's easiest.
Users browsing this forum: No registered users and 2 guests