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February 24, 2011, 10:16
Filed under: CDI technologies, derbi, garelli, minarelli, morini | Tags: , , , , , , , , , ,

farewell to points and condensor

Electronic ignition for all types of mopeds. These turned replace the points and condensors. Due to the variety of brands of magnetic flywheels and engine turns, we have different colors for better equipment and more simple setup, without altering the position of the original ignition plate. CDI units 1 – 7 have two parts (coil and CDI) included in this list as separate items all with the same 2013 CDI box

CDI with out sensor

The acronym means CDI Capacitive Discharge Ignition.
As its name implies, uses a capacitor that is charged with a given voltage and discharged on the winding high at the time required for the motor.
The sensor consists of power without a supply roll, a CDI (black box) and a high coil.
Turning the flywheel coil generates AC power which sends the CDI.
The Commission charges the capacitor with the positive half-cycles of alternating current and the negative discharge, therefore each complete cycle of alternating current results in a firing spark plug.
Fliers who work with this system consist of 4 magnets and generate 2 sinusoids per turn, so for this reason the sensor ignition system produce 2 sparks per revolution, one in PMS and another in PMI.
To achieve the right setting combines cutting flywheel key, position and polarity of the magnets, the position of the supply roll with the advance degrees required by the motor.
Due to the characteristics of the CDI are always fixed point at which they are used for 2-stroke engines and low displacements that do not require an advance curve complex.

CDI with sensor

The acronym means CDI Capacitive Discharge Ignition.

As its name implies, uses a capacitor that is charged with a given voltage and discharged on the winding high at the time required for the motor.

The ignition coil sensor consists of a supply, a CDI (black box), a sensor and a high coil.

Turning the flywheel coil generates AC power which sends the CDI.

The Commission charges the capacitor with the positive half-cycles of alternating current and maintains the current stored until it gets a pulse from the sensor. With this pulse triggers the capacitor on the coil current high generating a spark at the plug.

There are two basic types of sensors, one that sits inside the flywheel with an iron core and magnetic field takes the wheel to generate the pulses and the other is located outside the steering wheel and magnetic core is excited by a cam attached to the steering wheel to go near it generates the necessary pulse.
These CDI fixed point used in 2-stroke engines or some low displacement 4-stroke engines because other require an advance curve depending on the RPM for better performance.

voltage regulators

One of the easiest circuits to produce light on a motorcycle or moped is to connect the output of a generator coil (located inside the flywheel) the source of light through a light switch.

This coil generates AC with a frequency and voltage proportional to engine RPM.

Normally with a 4-pole flywheel generates two cycles per revolution.

If we apply a focus directly to the output of the coil will have two problems:

1 – At low RPM will have very little power and therefore our light is very low (this can be noted on mopeds when adjusting)

2 – At high RPM the coil will generate more voltage than necessary thus burn the lamp.

The first problem we can not give solution because we do not have the necessary power.

In the second case, were designed surge protectors whose function is to remove the positive and negative peaks in excess of 6 or 12 volt as appropriate.

These teams do not rectify the current, but the alternates kept stable.

Have two connections, one positive and one negative, and are applied in parallel with lighting coil.
Physically can have one or more terminals may have two positive and one negative, one positive and one mass cabinet or other combination, but always connected to the coil positive and negative light to the chassis.

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6 Comments so far
Leave a comment

Don’t forget to run a resistor plug or cap with cdi. It’s very important.

Comment by nathan

good point. that really makes a difference, hu?

Comment by treatshq

Yeah, if you don’t use one it could burn out the cdi.

Comment by nathan

Would the Ducati-CEV counter-clockwise unit work with a piaggio ped?

Comment by Dominic

no, as far as i know, i dont think they work with piaggio

Comment by treatshq

peit card cdi does any one know of a cheap cdi set up for a points model vespa???????? and if so please post ive found the cdi vespa flywheel only fit cdi vespa i tryed kinetic it was a no go i tryed vespa points wheel it was a no go the cdi kinetic on a points vespa is a perfect fix and fit if your a mad scientist i have some used left over parts for vespa if we could set up a good machine service so we could send benj our used stuff to be re used with over sized pistons or used heads to be welded up and reshaped i love shopping at treatland so whens the great marsh mellow roast im ready are you happy blasting ciao george

Comment by george boardway




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