Why are 19 turns faster?
#1
Why are 19 turns faster?
how come 19 turn motors have less rpm that the stock motors, but the 19t go faster?
what gearing could i use for a fantom 19t motor and also what brushes to use as well?
what gearing could i use for a fantom 19t motor and also what brushes to use as well?
#2
Tech Apprentice
Because they make more torque, and torque is what accelerates the car.
#3
And who says that 19T has less RPM than stock? On the same Turbo Dyno, my cobalt stockers hit 23-25K RPM, while my KD's hit 27-28K RPM. And my KD's are geared for a rollout of ~1.06-1.110, while my stockers are rolled out at ~1.12-1.16.
#4
Originally Posted by Stealth_RT
And who says that 19T has less RPM than stock? On the same Turbo Dyno, my cobalt stockers hit 23-25K RPM, while my KD's hit 27-28K RPM. And my KD's are geared for a rollout of ~1.06-1.110, while my stockers are rolled out at ~1.12-1.16.
also what voltage are you dyno'ing the motors? just curious
-Zac
#6
the rpm i have on my fantom 19t is 21,000 rpm@5v, so at 7v is would be just under 30,000 rpm.
#7
Tech Addict
Horsepower is calculated as RPM multiplied by Torque.
#8
Revs are nothing without torque to push them
#9
Tech Apprentice
In 1/12th scale I'm rolled out around 1.7" for stock motors and 2.0" for 19 turns. It's crazy how much high you can gear a 19 turn.
#10
Tech Regular
iTrader: (2)
low end grunt is everything. look at diesel engines low rpm, high hp
geared correctly torque will smoke rpm based motors and much easer to drive smooth
also look at motor cycles
once in the golden days of 2 stroke motors you had to be at 8000+ rpm to 20,000 to be in the powerband
ya i know thats a little high but some gp 125's do 20,000+rpm
now its all 4 stroke mostly
lower rpm tons of torque alot easer to rip the track with.
so torque is very much a key over looked in racing because everbody loves the sound of a motor all spooled up!
its the quiet guys to worry about!
geared correctly torque will smoke rpm based motors and much easer to drive smooth
also look at motor cycles
once in the golden days of 2 stroke motors you had to be at 8000+ rpm to 20,000 to be in the powerband
ya i know thats a little high but some gp 125's do 20,000+rpm
now its all 4 stroke mostly
lower rpm tons of torque alot easer to rip the track with.
so torque is very much a key over looked in racing because everbody loves the sound of a motor all spooled up!
its the quiet guys to worry about!