FAQ: How To Make A Motorcycle Regulator Rectifier?

Can a motorcycle run without a rectifier?

Re: running without a regulator rectifier It won’t damage anything to run without a working reg/rec. The issue is that you’ll have a very limited range, so the engine might die on you at any time; typically not while riding under load, but rather when you go to idle to come to a stop.

Will any rectifier work on any bike?

Yes you can fit pretty much any reg/rec from a modern motorbike with a few exceptions. Honda ones would be easiest because they use the same wire colours (although in a different connector block) so if you connect red to red, green to green and yellow to yellow, you’ ll be right.

How does a motorcycle regulator rectifier work?

The rectifier regulator converts AC power to DC allowing the alternator to charge the battery, and controls the amount of power delivered to the battery. Without a functioning rectifier – regulator, a weak, dead, or overcharged battery would be the result.

Can a bad stator damage a rectifier?

Registered. To answer your question yes it can, there are three diodes(phases) within the rectifier that allow current to go in one direction through the device (ie. Stator > Rectifier > Battery). But will not allow currrent to flow in the opposite direction.

What are the signs of a bad Rectifier?

You’ll note signs right away like poor starts, fluctuating meter readings, and dimmed headlights. around 13 volts, the bike will start to drain the battery. When this happens, it’s only a matter of time before the engine stops completely.

What is the difference between a voltage regulator and a rectifier?

Perhaps the biggest thing to note is that a rectifier converts input AC power into DC electrical power. Regulators are, on the other hand, systems configured to automatically maintain a constant voltage level to protect various apparatus against damage that can be caused by fluctuating voltage.

Does Rectifier need to be grounded?

The R/ R does not need to be grounded or bolted. It will work if you were holding it in your hand. Adding that the R/R is grounded through the wire harness. If anyone is having a problem check the connectors and the grounds.

Are motorcycles AC or DC?

Additionally, motorcycles need DC, or direct current, to power the electrical systems. Motorcycle alternators produce AC, or alternating current, requiring the rectifier/regulator to complete the system.

What does a voltage rectifier do?

Rectifier: A component that converts AC voltage (alternating current) to DC (direct current) voltage. The engine’s stator produces AC voltage and the rectifier converts it to DC voltage in order for it to continuously charge the battery.

Can a bad regulator rectifier cause no spark?

The regulator / rectifier is a voltage regulator that keeps the battery supplied with a steady 13.4 dc volts no matter what the stator is putting out, which is AC volts that varies with engine RPM. A bad regulator / rectifier will result in a dead battery, and once the battery is competely dead you will not get a spark.

What causes a stator to go bad?

There are a few things that may cause a stator to fail. Too heavy of a load when operating accessories (winch,heated grips,headlights, etc). If working several of these items at one time (plowing/pulling/possibly stuck at night) you would overload the system. This could cause either the stator or rectifier to fry.

What causes a rectifier to get hot?

It’s normal for an OEM shunt-type regulator/ rectifier (RR) to get quite hot — especially when the load being drawn by the electrical system is low. The RR is simply converting excess stator output wattage (that isn’t needed to run the bike and charge the battery) to heat. That’s why there are cooling fins on the RR.