120 Jota Ign Pick up to Plug on Bench

[Jugs_S]

Document in my Gallery

http://www.laverdaforum.com/gallery/albums/userpics/10144/120_Jota_1982_Pick_up_to_Plug.doc

Notes and Pix

 

[MotoJouni]

Hello, You have made very good work to document these.

I have worked on pick-up polarity on SFC 1000 some time ago and it is found here:
http://www.laverdaforum.com/forum/index.php/topic,93062.0.html

On the wiring diagrams everything about pick-up polarity is not expressed. Also at least on SFC 1000 diagram the cylinder numbering is strange. I think that the left cylinder should be number 1, center should be number 2 and right should be number 3. Then behind the pick-up cover there is pick-up 1 on the left, number 2 on the bottom and number 3 on the right. The electric boxes are for cylinders 1, 2 and 3 from left to right when looking the bike from right side. The coils are numbered 1, 2 and 3 from front to rear of the bike.

The drawer of the diagram have maybe confused that the system gives the spark on every plug at every crank revolution, not at every second only. Numbering of cylinders 2 and 3 is crossed. The firing order is 1-3-2 dictated by camshaft meaning that the sparker system gives sparks 1-2-3-1-2-3 for entire combustion cycle.

 

[andyp]

Nice one! again Jug_s

 

[Jugs_S]

Hello, You have made very good work to document these.

I have worked on pick-up polarity on SFC 1000 some time ago and it is found here:
http://www.laverdaforum.com/forum/index.php/topic,93062.0.html

On the wiring diagrams everything about pick-up polarity is not expressed. Also at least on SFC 1000 diagram the cylinder numbering is strange. I think that the left cylinder should be number 1, center should be number 2 and right should be number 3. Then behind the pick-up cover there is pick-up 1 on the left, number 2 on the bottom and number 3 on the right. The electric boxes are for cylinders 1, 2 and 3 from left to right when looking the bike from right side. The coils are numbered 1, 2 and 3 from front to rear of the bike.

The drawer of the diagram have maybe confused that the system gives the spark on every plug at every crank revolution, not at every second only. Numbering of cylinders 2 and 3 is crossed. The firing order is 1-3-2 dictated by camshaft meaning that the sparker system gives sparks 1-2-3-1-2-3 for entire combustion cycle.

I should have noted at the top that the numbers are for reference only and could have been A,B, C, my notation is while sitting on Bike #1 is LH Cyl  #2 Center and #3 RH. I've labeled pickup and Ign box So all #1 have #1 and so on.

As for the polarity of the pick up I still don't know. But what I do know is that If looking at a pickup from front with wires at top the stripe wire is on the RH side.

On the Ing box the two pickup wires go to the 2 spade contacts on the own and the stripe wire goes to the spade contact in the center. Strip connects to stripe in connector.