Hi everyone...new here and need help with a dilema i have....

[krnbk2]

I just recieved my trinity speed gems 2 17turn 1wind and Associated F1 w/ reverse ESC in the mail today, and it says on the ESC intructions that i need to solder on 2 suppresion capacitors on the motor in this fashion:

__ - __ on from the top right termial to

-- _ -- top center terminal and one from bottom left terminal to the bottom center

is this right, and is it neccesary? also this may sound stupid but how do i figure out which terminals on the motor are +(they arent labeled)? also, if i am installing the capacitors in that fashion than where do i install the motor wires that connect to the esc?
these are probably basic questions that i should know but i want to make sure i do this right http://www.rccaraction.com/ubb/smile.gif

thx so very much,
Pete

[FilthyPierre]

Most trinity motors are made by Epic. The new ones all have capacitors installed in the endbell already. Not sure about the Speed Gems - check the endbell around where the armature shaft pokes though - if you see a small marking that says 0.1uF, it's got the caps installed (and they're 0.1 micro Farads). Also, somewhere on there it will have a small + sign as well, that side of the bell is the positive.
Capacitors are installed to suppress noise from the motor glitching your receiver. You generally need to install 3; one between + and - terminals, one from + to the can and one from - to the can. Sometimes a motor will have a tab that is connected to the can so you don't have to solder directly to the can.
Most important, DO NOT put extra caps if the motor has them already installed. This will halve the capacitance value and thus be less effective in noise suppression.
Maybe someone else can answer whether the Speed Gems 2 have caps already installed - I checked Trinity's website, it doesn't say there....

[tadium54]

they dont have them installed already. i have a motor like it.

[krnbk2]

Thank you very very much, i am very greatfull

thx,
pete

[JoeTheShmoe]

seems like the esc's i use say to use say to use 3 capacitors.

[jrob440]

Capacitors smooth out the flow of current through the motor circuit. If you imagine current like water flowing through a pipe, capacitors can be considered like miniature "water towers" that maintain constant pressure through various disturbances in the flow.

They are a good idea for smooth electrical operation, even though they can be a pain in the *** to mess with.

[FilthyPierre]

Actually jrob, that's not correct. In power supplies and places where you need regulated voltage, eletrolytic caps do smooth the voltage out and help maintain a constant voltage. However, those required for the motor are there for noise suppression only, and they are not just a good idea, they're a must if you don't want the motor to cause radio interference. The MOTOR will happily operate without them, but the radio might complain....

[RCJunkie]

You need the caps to keep the motor from glitching from radio noise. The speed gems have a small "+" symbol at the top of the endbell to mark polarity. That motor should have come with the caps in the package. There is a small tab with an eyelet on each side of the endbell. You can solder to one of those. Its the same as soldering to the can. Solder one cap between the "+" and the "-" terminals and then one cap from each terminal to the tab that I just described. Before you solder figure out how the motor is going to sit on the motor mount and try to solder to the tab that will be facing up so the caps won't smack the ground (if the motor hangs out the backend like a T3). If the motors pretty well protected don't worry about it.

[krnbk2]

well i have been running my motor for 2 days now without the capictors and i seem to have no problems with interference, but i will still be soldering them on....


thx for eveyones help,
Pete

[jrob440]

FilthyPierre--I think we are in agreement, I was just interpreting noise as a spike in the voltage, which is absorbed (or smoothed) by the capacitors.

That's also correct on the motor itself running fine w/o them.