connector newbe question

[clarkm]

Just purchased a Leapard 3674 motor, are the stock connectors ok or have you been changing them to 5.5 connectors which look larger?

[Stitch]

I could be wrong here but I would not cut the connectors off the motor. If you cut them it could mess the timing or something to that affect. That's what I have heard. Maybe a expert will chime in.

[Chuck E Cheese]

dont cut the wires, but i would heat up the connectors to remove them and replace them with 5.5. however im sure that on a 3674 the stock connectors would be fine, i just like consistancy throughout all my boats.

[clarkm]

Thanks for the input guys, the connectors look good to me just slighly smaller then the 5.5's if that makes a difference in current flow? I don't know crap about the electrical end of this sport but I'm trying to learn.

I forgot to add I may need to extend the motor wires to reach my esc I under stand you should try to avoid this.

[G-UNIT]

My 3674 2200kv came with 5.5 connectors on them already and work with all my other connectors.

[Fluid]

...I forgot to add I may need to extend the motor wires to reach my esc I under stand you should try to avoid this.

It is best not to do so. Try to position the ESC near enough to use the ESC motor wires and the short wires out of the motor. In FE boats, shorter is almost always better. Wires too long will lead to burned up ESCs and lots of heat as well as slightly reduced performance (well, greatly reduced performance if the ESC blows).



.

[JIM MARCUM]

Keep the ESC as close to the motor as possible. Long wires = more resistance (wasted as heat) and less current flow (Amps). Short wires = less heat loss & more amp flow. Resistance is the ENEMY.

I use a mini-torch to remove stock bullets. Heat em up & they fall into a cup of water. If stubborn, I clip on a tiny vice grip on the bottom and let the hot bullet drop on my soldering table - a piece of granite flooring tile.

As to bullet connectors, after several stock motor/ESC/LIPO connectors melted the silver solder at the ESC/LIPO connections, I've settled on 8mm ESC/LIPO bullets for all of my ESC/LIPO connections - all sizes of motors. Makes charging easy & no meltdowns so far.

For the (3) motor/ESC connectors, I use 8mm for 5692s, and 6mm for all of my smaller motors. Having an 8mm & 6mm standard makes wiring simpler and uniform between boats & motors.

The best 8mm bullet connectors I've seen can be bought at Hobby King. They have thicker bullets, and the longer connections have more surface area for a solid electrical contact. If you need good quality bullets fast, buy them here on OSE - best FE customer service anywhere.

Used to have problems with the silver solder flowing into the contact areas, so I built this simple jig below. Use the mini-torch and regular electrical solder to fill up the connector ends, and 60/40 silver solder on the wires. With the connector in the jig, heat the bullet solder & wire with the mini-torch until the wire can be folly pushed into the bullet. After it cools down, I clip off excess solder from the holes in the bullets & a flap wheel to smooth things up prior to adding the heat shrink. JIM

NOTE: It's just a piece of >1/2" thick aluminum plate with holes drilled the same size as the "connector" OD part of the bullet to hold them in place & eliminate excess solder flow.DSCN0952.jpgDSCN0951.jpg

[clarkm]

Thanks Jim, I appricate you taking the time to write that post!