Reply To: BRP Points Quality

[Mumbles]

Well, I’m not so sure about that as I’ve pulled many sets of badly pitted points out of mags which could only be caused by bad or out of spec capacitors. I’m sure the people who designed these ignition systems went to a lot of trouble to determine what uf rated capacitor to use with a certain coil. How you could install a 0.47 uF cap in a magneto designed for a 0.21 uf cap and expect longevity out of the system is beyond me. Sure, it will work at first, but I’m sure the points would be burned or pitted long before their time. If I was stranded ten miles from the ramp and it was getting dark out and starting to rain, sure, I’d do that, but only to get me home. It would then be removed from the motor, framed, and hung on the wall after replacing it with a correct cap with the factory required uF rating.

Something to be aware of are the coils and caps originally used in some 18 – 40 horse motors and early 9.9/15’s. The cap is P/N 581419 and they compliment the original 580197 coils used in these motors. (Not the 9.9/15’s.) The coils look the same as the common 584477 coils but there must be something different about them to require the 0.28 uF 581419 caps instead of the more common 580321 caps. I’m sure if the manufacturer felt one cap would cover all the bases, they would have done that.