Ignition Module Question
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
when my module went south, my mechanic replaced it with a crane cam ignition - I'm pretty sure it's a dual fire - they claimed (and I trust my mechanic to work on MY bike for MY type of riding) that single fire/dual fire won't make much difference unless on a racing/performance type application. I like the idea of everything in one little package - it bypasses the voltage regulator under the seat, which I removed completely.
As far as aftermarket ignitions, I've never seen a properly set up one hurt performance. I have sen them improve performance over a stock module. A plus is as the gas gets worse you can do some adjusting to compensate. Just my two cents worth.
Well I put a stock one back on it just to be safe and got it fired up this weekend. I need to adjust the timing a little more but for the most part it's runnin like a song. Thanks for the input fellas and I hope to aquire some more helpful advice later on down the road from y'all and hope that maybe I'll be able to help you as well.
Intermediate
Joined: Oct 2011
Posts: 47
Likes: 0
From: Missouri
The piece under the seat was your ignition module. The stock ignition only has a pickup in the nose cone.
As far as aftermarket ignitions, I've never seen a properly set up one hurt performance. I have sen them improve performance over a stock module. A plus is as the gas gets worse you can do some adjusting to compensate. Just my two cents worth.
As far as aftermarket ignitions, I've never seen a properly set up one hurt performance. I have sen them improve performance over a stock module. A plus is as the gas gets worse you can do some adjusting to compensate. Just my two cents worth.
Cruiser
Joined: Sep 2011
Posts: 236
Likes: 0
From: Ontario, Canada
It is a myth that dual fire is inefficient, the system is designed to give adequate spark at both plugs and spark size has very little to do with power output unless the spark is so compromised that it can't ignite the gas, gas explodes once lit, you just need enough spark to light it.
I have fitted single fire systems for people and couldn't tell the difference...now a tuneable module...that IS a good thing :-)
I have fitted single fire systems for people and couldn't tell the difference...now a tuneable module...that IS a good thing :-)
The firing voltage in a dual fire system is actually higher than in single fire system. The second sparkplug gap that has to be jumped to make the circuit forces the coil to saturate more deeply and that and the extra distance makes the voltage higher to the plugs.
Shittin' Chicken modules increase the rev limit and some have different curves. Aftermarket ones are more adjustable and more apt to be misadjusted.
Shittin' Chicken modules increase the rev limit and some have different curves. Aftermarket ones are more adjustable and more apt to be misadjusted.
Stellar HDF Member
Joined: May 2009
Posts: 2,856
Likes: 127
From: Middle of Kansas
The module on my 84 sportster went intermittant on me where it would sometimes start, and sometimes would not. I bought a points coil, a breaker plate with a flyweight advance, and changed it out to points ignition. I thought it ran better than it ever did, and even though I carried an extra set of points and condenser, I never needed them. It had about 20,000 miles on that setup when I sold it. I know the electronic is probably better, but sometimes old school just makes you smile. About the only difference I could tell was that my gas mileage dropped a little because the timing did not advance quite as far. Otherwise I liked it better, and I could fix it if I had a problem without spending $150.00.
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