- Joined
- Jan 31, 2010
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- 3,027
This morning I removed the OEM ignition that I had installed some days ago for "curiosity purposes" and reinstalled the TriSpark.
In one way I preferred the OEM - the bike's response was a bit sharper off the line with the timing set at 28 BTDC for both ignitions. I'm sure that was due to the fact that even though the Trispark is similar to OEM as far as the ignition advance, the OEM is still quicker to full advance.
In fact, I would have kept the OEM in except for one thing...battery charging. With the OEM ignition and the Alton/Podtronics, charge voltage didn't get above 13V until nearly 3k RPM. I switched out the Pod with the old Lucas rectifier/Zener and the voltage went up a couple of tenths but still not all that great.
I reinstalled the TriSpark and charge voltage immediately was 13.2V at idle (around 1100 RPM).
So the TS is back to stay - just wish it had the more aggressive advance curve of the stock AAU. I think I'll do the old hot-rod timing trick to see if I can get a bit more urge - advance the timing till it pings then back it off 2 degrees. Of course, if that ends up with kickbacks on start-up, that's no good either. Oh well, life's full of compromises!
In one way I preferred the OEM - the bike's response was a bit sharper off the line with the timing set at 28 BTDC for both ignitions. I'm sure that was due to the fact that even though the Trispark is similar to OEM as far as the ignition advance, the OEM is still quicker to full advance.
In fact, I would have kept the OEM in except for one thing...battery charging. With the OEM ignition and the Alton/Podtronics, charge voltage didn't get above 13V until nearly 3k RPM. I switched out the Pod with the old Lucas rectifier/Zener and the voltage went up a couple of tenths but still not all that great.
I reinstalled the TriSpark and charge voltage immediately was 13.2V at idle (around 1100 RPM).
So the TS is back to stay - just wish it had the more aggressive advance curve of the stock AAU. I think I'll do the old hot-rod timing trick to see if I can get a bit more urge - advance the timing till it pings then back it off 2 degrees. Of course, if that ends up with kickbacks on start-up, that's no good either. Oh well, life's full of compromises!