callsign4223
Staff member
EC3 connectors are famed for the ease of soldering them. This is a mostly true reputation. One point of difficulty in working with them is putting the bullet into the plastic shroud however. I finally figured out a method that is reliable and does not risk damaging the connector.
Step 1) Solder battery or esc wire to the bullet. The easiest method of doing this is to place the bullet vertically with the solder point upwards. Place the pre-tinned wire into the cup. Heat the cup with the soldering iron while placing solder wire into the cup. DO NOT OVERFILL THE CUP. Attempt to get as little solder outside the cup as possible. Excess solder outside the cup makes the following steps significantly more difficult.
Step 2) Place the plastic shroud vertical on a hard flat surface with the wire insertion side up.
Step 3) While being aware of polarity (Positive gets the D side Negative gets the O side) place the bullet loosely into the plastic shroud.
Step 4) Place a small flat tip screwdriver into the shroud in the same direction as the bullet, resting on the edge of the bullet.
Step 5) Press down firmly (This will take a lot of force) until you feel the bullet snap into the connector.
Step 6) Repeat steps 3-5 for the opposite polarity bullet.
If done properly, EC3 connectors do not require heat shrink because the insulation will continue into the plastic shroud, however I prefer to use a small amount on each side anyway as an extra precaution.
Next time I go to do this I will take pictures and update this post with pictures.
Step 1) Solder battery or esc wire to the bullet. The easiest method of doing this is to place the bullet vertically with the solder point upwards. Place the pre-tinned wire into the cup. Heat the cup with the soldering iron while placing solder wire into the cup. DO NOT OVERFILL THE CUP. Attempt to get as little solder outside the cup as possible. Excess solder outside the cup makes the following steps significantly more difficult.
Step 2) Place the plastic shroud vertical on a hard flat surface with the wire insertion side up.
Step 3) While being aware of polarity (Positive gets the D side Negative gets the O side) place the bullet loosely into the plastic shroud.
Step 4) Place a small flat tip screwdriver into the shroud in the same direction as the bullet, resting on the edge of the bullet.
Step 5) Press down firmly (This will take a lot of force) until you feel the bullet snap into the connector.
Step 6) Repeat steps 3-5 for the opposite polarity bullet.
If done properly, EC3 connectors do not require heat shrink because the insulation will continue into the plastic shroud, however I prefer to use a small amount on each side anyway as an extra precaution.
Next time I go to do this I will take pictures and update this post with pictures.