Recent content by Kjell Amundsen

Hi all. I thought I'd add some updates after finishing my diy rewind of the stator in question. I decided to go simple, and estimated roughly 40 windings for each core. Doing it by hand is not ideal as it was hard to keep the wires as tight as a machine would. I compensated with generous amount...

You are right about the R/R part. I have read descriptions of poor and corroded connectors and groundings as the main enemy of charging systems like these. That is - when the battery is charged and the bike is running with low load (no main lights on), the poor connections will thus have the...

It was coil nr 4 from the start at 9 o'clock on the picture that was most severly scorched and the wire was burnt off. Secondly the two neighboring coil was suffering from overheating and was loosened on the coil in addition to burnt wires. When measuring continuity of the 3 ac output wires they...

I checked my notes and reviewed the photos once more. It for sure sums sup to something very non-symmetrical like this: Phase A has 5 coils With 160 turns total Phase B has 5 coils With 180 turns total. Phase C has *4 coils With 160 turns total. I the picture phase A starts at 9 o'clock and...

Hi again. Regarding the magnetic flywheel. I did the screwdriver thing suggested earlier and found 12 "equilibrium" spot. I am a little uncertain on how to interpret that into generator jargon, but are we talking about 12 magnetic poles then? If my findings had been that all three phases had...

Actually the 3 separate ignition coils are not part of the 3ph at all. They are split into what is reffered to as a high and low voltage output. I believe this is to ensure proper Volt and Amps at both idle and full power respectively. Ie between 1500 rpm and 10.000 rpm range. This will also be...

Thanks. I will get back with the permanent magnet setup of the rotor/flywheel within a couple of days.

Hi I did ask a stator aftermarked supplier about this non symmetric layout. "This is usually compensated for by winding slightly less turns on the 2 coils with more poles to get about the same amount of current" I understand "coil" here as the total windings distributed between several "poles"...

Flywheel fitted externally to the coils seen in first post. Permanent magnet are encapsulated along the inside of the flywheel/rotor.

Hi and thanks for reply.The external flywheel has embedded/hidden magnets so it is hard to tell how many poles, but I expect it to be multiple. -Perhaps that can be investigated by using another permanent magnet along the perimeter and count the pole changes? Further, if it is a multi pole...

Hi all. I am DYI practically oriented enginneer (B.Sc) with an practical background from mechanical and electrical industrial equipment hands-on repairs. Currently working within oil and gas industry, mostly producing documents :-) . I live and work in Norway. Found this forumwhen i was...

Hi all. I wonder if anyone has any thoughts regarding my DIY rewinding project as follows: *Motorcycle stator off an old Yam RD350 (known as RZ350 in the US) needs rewinding after some of the coils were "fried". *The stator has 3 larger high voltage coils used for the CDI system - and is left...