How to measure electrical output of bike?

[NzBrakelathes]

Originally Posted by Megadan

10 Amps at 9000rpm maybe, and even that is a big maybe. Max output means very little in most cases. The average output for most bikes that you really want to go off if is usually around 4000-5000rpm for any bike that doesn't generally go beyond 10k rpm.

In the case of the typical 8 coil stator, that is right around 5 Amps, give or take a little.

I would say the claimed is just that........ nice number to believe but reality as we know from them is totally different.
But you get the gist - more coils and bigger and or wider equals more bigger number etc.

[mtiberio]

The TT250 claims a 300 watt alternator. Do all of the counterbalanced Zhongshens have that? Looking at my Brozz, it has a rather large alternator bump. Just wondering.

[Biker_Andy]

No CSC specifically requested Zongshen to put in the biggest stator available (300W) for all of their models TT, RX3, RX4, SG ect. Zongshen like most Chinese companies will try to keep production cost as low as possible and use as small of stators as they can get away with. The exception is on their police models.

Id like to add that a clamp on meter to measure current is flawed. Cheap clamp on meters can only measure AC current at 60Hz. A motorcycle almost never has 60Hz frequency - only at a specific RPM. More expensive clamp on meters can accurately measure AC current at various frequencies. Only the most expensive clamp on meters are able to measure DC current found in most motorcycles. Measuring AC current and AC voltage at the stator isn't much use when you have high losses converting it to usable DC.

[NzBrakelathes]

Originally Posted by Biker_Andy

No CSC specifically requested Zongshen to put in the biggest stator available (300W) for all of their models TT, RX3, RX4, SG ect. Zongshen like most Chinese companies will try to keep production cost as low as possible and use as small of stators as they can get away with. The exception is on their police models.

Id like to add that a clamp on meter to measure current is flawed. Cheap clamp on meters can only measure AC current at 60Hz. A motorcycle almost never has 60Hz frequency - only at a specific RPM. More expensive clamp on meters can accurately measure AC current at various frequencies. Only the most expensive clamp on meters are able to measure DC current found in most motorcycles. Measuring AC current and AC voltage at the stator isn't much use when you have high losses converting it to usable DC.

RX3 has had the 300W stator since long long ago, only the TT is bigger then common.

CB and CG seem to have around 5-6 options on stator output claims etc and what I said is correct re diameter and width.
CB and CG do not seem to share the same stator tho....

[NzBrakelathes]

Originally Posted by mtiberio

The TT250 claims a 300 watt alternator. Do all of the counterbalanced Zhongshens have that? Looking at my Brozz, it has a rather large alternator bump. Just wondering.

Study the pic of the stator or remove the cover count the coils, diameter and width - that tells all etc

[China Rider 27]

The point I get here is that the weak nature of the charging systems and these small batteries dictate a battery tender is key to maintaining your battery in the best state possible prior to use. If you can't use a cord, I saw this solar charger for around $20.00 bucks and they make versions that go from 1.5w up to 8W.

https://www.amazon.com/SUNAPEX-maint...xpY2s9dHJ1ZQ==