natemeins
Seaman
- Joined
- Oct 20, 2013
- Messages
- 73
Hey fellas,
So I've done all the research I can and have decided there are too many answers- either that or I'm confused in terminology. I have a '71 Evinrude Lark 50. Recently bought a Faria tach to install in my boat. Wiring it up has been no problems. Verified the gray wire I tapped at the control that I now have connected to the "send" terminal on the tach feeds all the way back to the motor and connects to the terminal block screw with the yellow/gray wire from the stator, yellow/gray wire from the Diode & Lead Assy pack, and yellow wire from the rectifier (new rectifier, both wires are yellow), so I'm certain I'm tapped at the UNRECTIFIED side, direct from the stator.
According to Faria's installation sheet, Evinrude/Johnson's "All 2-cylinders less than 70HP" is set to 10P. I found another note from Faria (don't remember where it came from) that says Evinrude and Johnson 2-cyl 50-55hp (elec. start only) 1971-1977 is 6 pulse. THEN, in my 1971 Evinrude Service Manual for the Lark 50 on page 7-6 the 6-amp charging system's stator assembly is "made up of 8 coils wound over a laminated iron core."
When Faria describes these settings as a "10P" are they referring to pulse or pole? When the term "pole" is used is that the same thing as a "coil", and is that the same thing as a "winding"? So as I'm understanding it correctly, if there are 8 charge coils on my stator (8 charge coils plus 2 ignition coils total on the stator, but we don't count the ignition coils, right?) would that mean this is an 8-pole system, and the switch on the tach should be set to 8P? If the second note I found from Faria is correct and it's a 6-pulse, would that mean it's a 12 pole system? This has driven me nuts for some time now, and I just want to get to the bottom of it. Normally I would've just used my Craftsman timing/tach light, in which it has a 2-stroke setting and just match numbers with it, but lately it's been in question as to it's accuracy. The last time I tried to use it the tach was bouncing all over the place and read ridiculously high, like over 2000rpm when the motor was idling.
Mostly I'm trying to make sure the indication of my Faria tach is accurate because I'm testing different props and motor tilt angles and want to make sure I'm not overreving. Currently I have the tach set for 10P, and at WOT I can easily tilt the motor and shoot the tach past 6000rpm and still have the ability to tilt the motor and increase boat speed.
Thanks for any help y'all can provide.
So I've done all the research I can and have decided there are too many answers- either that or I'm confused in terminology. I have a '71 Evinrude Lark 50. Recently bought a Faria tach to install in my boat. Wiring it up has been no problems. Verified the gray wire I tapped at the control that I now have connected to the "send" terminal on the tach feeds all the way back to the motor and connects to the terminal block screw with the yellow/gray wire from the stator, yellow/gray wire from the Diode & Lead Assy pack, and yellow wire from the rectifier (new rectifier, both wires are yellow), so I'm certain I'm tapped at the UNRECTIFIED side, direct from the stator.
According to Faria's installation sheet, Evinrude/Johnson's "All 2-cylinders less than 70HP" is set to 10P. I found another note from Faria (don't remember where it came from) that says Evinrude and Johnson 2-cyl 50-55hp (elec. start only) 1971-1977 is 6 pulse. THEN, in my 1971 Evinrude Service Manual for the Lark 50 on page 7-6 the 6-amp charging system's stator assembly is "made up of 8 coils wound over a laminated iron core."
When Faria describes these settings as a "10P" are they referring to pulse or pole? When the term "pole" is used is that the same thing as a "coil", and is that the same thing as a "winding"? So as I'm understanding it correctly, if there are 8 charge coils on my stator (8 charge coils plus 2 ignition coils total on the stator, but we don't count the ignition coils, right?) would that mean this is an 8-pole system, and the switch on the tach should be set to 8P? If the second note I found from Faria is correct and it's a 6-pulse, would that mean it's a 12 pole system? This has driven me nuts for some time now, and I just want to get to the bottom of it. Normally I would've just used my Craftsman timing/tach light, in which it has a 2-stroke setting and just match numbers with it, but lately it's been in question as to it's accuracy. The last time I tried to use it the tach was bouncing all over the place and read ridiculously high, like over 2000rpm when the motor was idling.
Mostly I'm trying to make sure the indication of my Faria tach is accurate because I'm testing different props and motor tilt angles and want to make sure I'm not overreving. Currently I have the tach set for 10P, and at WOT I can easily tilt the motor and shoot the tach past 6000rpm and still have the ability to tilt the motor and increase boat speed.
Thanks for any help y'all can provide.
