What is your Alton Charging Voltage versus RPM? Mine is below

Lorenz · Sep 9, 2023

Today I have receive a replacement Magnet Ring from my friendly dealer Dominator Engineering and replaced the old one for a test.
And the outcome is clear: high idle 1500 rpm it is 17V AC and at 3000 Rpm 31 V AC
So far the Altenator side is fine. Unfortunately Battery still didn't charge. Maybe the Boyer Box is also down.... what a mess.
now I will assemble a new podtronic rectifier with a ferrite magnet against interfering my Tri-Spark.

Lorenz · Sep 26, 2023

Finaly I have solved now this mess. A new rotor from ALTON arrived, but now I had an issue with clearance. between rotor / stator. After slight and carefuly tighten of screws the clearance at on side is more compare to the other and the white shim plates are stiff taking out. By advise of ALTON I should rework the stator M5 bore a bit from 5.5mm to 5.7mm and then the gab is better to control. But by the first test I have at high idle approx 16.5 - 18 V AC and at the Battery by the PODTRONIC Rectifier 14.1 V DC. Due I have a Tri-Spark ingnition I must first make an electrical noise reducction at plus by a ferrit ring.
Hopefly now I will have no stress anymore by this issue.

seattle##gs · Sep 26, 2023

recently a friend lost all magnetism because a wire shorted out and required 3 fuses while finding the problem.
also, try as I might, I could not get even clearance between rotor and stator....008 at its thinnest.

cliffa · Sep 26, 2023

Lorenz said:
Finaly I have solved now this mess. A new rotor from ALTON arrived, but now I had an issue with clearance. between rotor / stator. After slight and carefuly tighten of screws the clearance at on side is more compare to the other and the white shim plates are stiff taking out. By advise of ALTON I should rework the stator M5 bore a bit from 5.5mm to 5.7mm and then the gab is better to control. But by the first test I have at high idle approx 16.5 - 18 V AC and at the Battery by the PODTRONIC Rectifier 14.1 V DC. Due I have a Tri-Spark ingnition I must first make an electrical noise reducction at plus by a ferrit ring.
Hopefly now I will have no stress anymore by this issue.

I was having issues getting the clearance on mine at around the 2 o'clock position, so I very slightly opened up the lower two holes which enabled the stator to "Swing" on the top screw enough to get a better clearance.

What is your Alton Charging Voltage versus RPM? Mine is below

Lorenz · Sep 29, 2023

I have received from ALTON the info to rebore the M5 at 5.7mm I will do so and let you know

DennisMo · Sep 29, 2023

The Alton Crank nut looks like it is on backwards. The ridge is supposed to go into the recess in the rotor. Also, there is a washer on it instead of the Alton supplied lock plate (that is very thin and is secured to one of the rotor's 6 allen bolts)
Dennis

DennisMo · Sep 29, 2023

I want to post a photo of what my setup looks like with the Alton crank nut ridge facing the other way and no thick washer. Note that your orientation has less nut threads biting the crankshaft threads. However it wont take the photo so if you send me a private message with Email address i can send you the photo

Dennis

Dave F · Aug 5, 2024

If the magnetic ring is losing magnetism does it happen gradually or all at once? I had good charging but now it’s gone! I have the impression that it has “declined” rather than dropped dead

Nortoniggy · Aug 6, 2024

Hard to say how quickly it declined on mine. I only realised when I was out one day and battery wasn't charged enough to start the engine after a stop. I managed to get home and then did the output tests which indicated magnet ring had lost some of its magnetism.
It would be nice to find a way to remagnatise the ring. Villiers Services are near to me and they can remagnatise Lucas rotors so I took my Alton magnet ring to them and asked. They said they couldn't help.

What is your Alton Charging Voltage versus RPM? Mine is below

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