How many wires are there on a CDI?
On the CDI, there are 5 wires – black/red (Connected to engine-block) – blue/white (Connected to ignition coil) – green wire (Connected to ignition coil AND to all earth wires)
Where does the CDI cable come from on a bike?
Can’t make a picture of that now, as it’s under the gastank. From this unit (besides the new extra line I made) there are two cables, a Black/yellow and a full-green. Both directly run to the CDI (using the original cable and plug). : and a red/black, which also comes from the engine block.
How does the ignition circuit work on a CDI?
I am assuming that both the red/black and white/black would normally run to the “key” in the steering wheel, making the ignition circuit by connecting red/black on turning the key while breaking the white/black to earth connection, and on key-off making the white/black to earth connection while breaking the ignition circuit.
Where does the spark plug go on a CDI?
The ignition coil (connected to the spark plug) is attached to the frame and seems to make an earth connection to the frame itself. I ran an extra cable from one of the holding screws to be an “earth point” for all my earth connection.
What does a CDI box do on a dirt bike?
Here’s a CDI box in a dirt bike. You’ll often find them lurking under your seat. Andy Greaser photo. The basic CDI system is a trigger mechanism, coils, and a box, often black, with capacitors and other circuitry inside. The trigger tells the box to fire, the box determines when to fire which coil with the capacitors,…
Where does the CDI wire come from on a bike?
Both directly run to the CDI (using the original cable and plug). : and a red/black, which also comes from the engine block. A note to make here: The core red/black seems to be silvercoloured instead of cuppercolored wire, while the one from the CDI is a cupercolored cable.
What are the parts of a CDI circuit?
Parts List for the CIRCUIT DIAGRAM R4 = 56 Ohms, R5 = 100 Ohms, C4 = 1uF/250V SCR = BT151 recommended. All Diodes = 1N4007
Why is my CDI not working on my bike?
The problem may get worse as the bike warms up. It might not even hold low revs at all. You’ve tested everything but the CDI unit, including the charge of your battery, your spark plugs, the health of your coils, and the triggering mechanism itself. Could it be your black box?
What does a performance racing CDI look like?
Performance racing CDI. The box is typically an anodized blue with a sticker indicating some sort of curve. Amusingly the curve has no units nor meaning and the box does not have any sort of timing curve built in. Also interesting is the advertising of either a “2 stroke” or “4 stroke” version.
Is there a timing curve on a CDI moped?
This would imply a timing curve (advancing for 4t, or retarding for 2t, but both appear on all accounts to be identical and without timing curve. The 5 pin wired version should have a connector which matches the 5 pin CDI pinout shown above.
Where does the power come from on a CDI?
Can you take photos of all the main plugs as some of them colours dont match up to me. Also since you have that black/red wire from the engine to CDI that tells me that the CDI is powered from the Stator and no power will be needed from the reg/rec.
On the CDI, there are 5 wires – black/red (Connected to engine-block) – blue/white (Connected to ignition coil) – green wire (Connected to ignition coil AND to all earth wires)
Performance racing CDI. The box is typically an anodized blue with a sticker indicating some sort of curve. Amusingly the curve has no units nor meaning and the box does not have any sort of timing curve built in. Also interesting is the advertising of either a “2 stroke” or “4 stroke” version.
Can you take photos of all the main plugs as some of them colours dont match up to me. Also since you have that black/red wire from the engine to CDI that tells me that the CDI is powered from the Stator and no power will be needed from the reg/rec.
Why do Chinese 50cc scooters have CDI installed?
Pretty much all of the Chinese 50cc scooters have a restricted CDI installed. I can’t tell for sure why, but I believe the Chinese government might have enforced a similar rule, or the Chinese manufacturers just wanted to ensure that their models can be sold to the Japanese market without modifications.