Originally Posted by catchm3srt
Im looking for a Motor to put in my XXX-CR that will smoke the tires like nothing... lol
Sooo. Im gonna race at the indoor tracks so i cant have a brushless motor which i would like the Novak 3.5..
So what it the best motor and the best servo for the job???
And since im a lil new to the electric department, explain the difference between a 19 turn motor and a 7 turn ect? why would you even get the 19 since the lower is better?
And whats the quickest servo i should look into>?
Ummm... can i ask a silly question?
Why does the fact you race indoor affect your ability to run brushless?
So... here's the thing... if you need to ask what a 7 turn is, i can gurantee you that you're not ready for one lol. Read on....
Assuming you know the basic jist of an electric motor, the "turns" describes the number of times the wire has been wrapped around the armature.
Less turns = more RPM but less torque. Needs shorter gearing to overcome its lack of torque, but makes up for it with its higher RPM.
Higher turns = less RPM but more torque. Needs taller gearing to overcome its lack of RPM (and also to utilise its torque advantage)
Why even consider a 19 turn? Track size, gearing and maintenance.
A short, tight, technical track may be better suited to a 19turn, it has more torque and you dont need huge RPM if the straights are fairly short. To run a 7 turn on this short track, you'll need to gear it down big time... and will loose a lot of that top speed advantage.
If you have, well, an oval where you can keep the buggy at full speed - obviously the higher rpm motor is going to excel here, as torque isnt a huge issue if you dont need to slow down/speed up.
A 7 turn (i dont think anyone runs 7 turn motors in offroad, but let's stick with it for an example) will need to be dismantled and have its commutator (surface where electric current passes to the electromagnet in the motor) cut on a special lathe... probably after every race meet, if not... during the race meet itself. These are very 'high stress' motors - constantly fighting to overcome their lack of torque (this generates a lot of heat and wears the commutator quickly) and when they do get up to those amazing RPMs, it wears everything out like hell.
A 19 turn, you can prob get away with cutting the commutator a few times each racing season.
Of course there's a lot more factors to it... wont even go into motor timing... but they're the basics...
Servos? Get the strongest, quickest one you can afford.