Topic: Dyna 5 Ohm Coils + Dyna S Ignition = No Go?

[zeech]

A little info first: I'm running Dyna 5 ohm coils with an updated combo reg/rect. The bike has been entirely rewired from scratch and the wiring simplified while using a circuit breaker to fuse the bike. Headlight and hand wired signals. Nothing crazy.

I thought I remember reading something from Hondaman at some point that adding in the Dyna S was a no go on their 3 ohm coils because it would affect some other aspect which I can't remember. Would this still be the case with my current setup?

[HondaMan]

Well, based on what we have seen: the Dyna S is designed for a 4 amp maximum load. The 3 ohm coils pose just that, a maximum load. It's then a bit like running the engine at redline all the time: it will do it, for a while.

In the last 5 or 6 years, I've helped a bunch of riders 'solve' their Dyna S troubles that were: it runs for a while, then quits or runs poorly, but after cooling off, works OK again. In most of these cases, it was a Dyna S with 3 ohm coils. That's how I first started making the Resistor Pack: it was to cool off the Dyna S so those guys could ride. It adds 1 ohm to the coil circuit(s) so the "S" sees only about 3 amps, which is 75% of its capacity, helps it run cooler.

This doesn't count the outright Dyna S failures: those weren't solve-able with a Resistor Pack.

[zeech]

So this same problem persist on the 5 ohm coils since it's more juice? Sorry I don't have much knowledge of coils etc.

Guess I should just buy a new set of points, they work great anyway.

[HondaMan]

So this same problem persist on the 5 ohm coils since it's more juice? Sorry I don't have much knowledge of coils etc.

Guess I should just buy a new set of points, they work great anyway.

The Dyna S and the 5 ohm coils get along just fine.

Or, you can stay with the points you have, and get one of my boxes: those existing points will last at least another 10 years then, from all indications we have seen.

[zeech]

I haven't had any issues running the 5 ohm and the regular points for around 3K miles. Would a box do anything different or is that only for 3 ohm coils and Dyna S?

Thanks for the info good sir!

[fdbrat]

I'm Dyna s and 5, im happy. I got the box too.

[HondaMan]

I haven't had any issues running the 5 ohm and the regular points for around 3K miles. Would a box do anything different or is that only for 3 ohm coils and Dyna S?

Thanks for the info good sir!

The 5 ohm coils will work fine with the points: the stock coils were about 4.8 ohms. They make a good replacement for stockers, and have replaceable wires to boot!