gearing
05-13-2005, 11:00 PM
#3
Senior Member
Join Date: Jan 2005
Location: Winnipeg,
MB, CANADA
Posts: 273
Likes: 0
Received 0 Likes
on
0 Posts
RE: gearing
Unless you had a motor with unlimited power, then higher gearing would excellerate faster am I right?
Well I mean if the motor reached the same RPMs at the same speed either way you gear it.
Well I mean if the motor reached the same RPMs at the same speed either way you gear it.
05-14-2005, 07:56 AM
#4
Senior Member
Join Date: Sep 2004
Location: york, UNITED KINGDOM
Posts: 775
Likes: 0
Received 0 Likes
on
0 Posts
RE: gearing
it depends what you mean by higher gearing. TECHNICALLY i think higher gearing makes acceleration faster. but common sense tell me higher gearings makes it slower acceleration (like trying to accelerate from dead stop in gear 4 in a car or something).
smaller pinion and bigger spur means faster acceleration but slower top speed and visaversa
smaller pinion and bigger spur means faster acceleration but slower top speed and visaversa
05-14-2005, 11:39 AM
#5
Senior Member
Join Date: Dec 2004
Location: Toronto,
ON, CANADA
Posts: 678
Likes: 0
Received 0 Likes
on
0 Posts
RE: gearing
taller gearing means more acceleration, even thought it sounds like it means more top-end (and most people use it the wrong way)
The word taller means difference in numbers. if you had a pinion with 10 teeth and a spur with 60, the ratio would be 1:6. But if you had a pinion with 20 teeth and a spur with 60, the ratio would be 1:3. So the taller one is the first one, 1:6, because the numbers are farther apart on a number line. And a ratio of 1:6 has (theoretically) twice the acceleration and half the top speed.
The word taller means difference in numbers. if you had a pinion with 10 teeth and a spur with 60, the ratio would be 1:6. But if you had a pinion with 20 teeth and a spur with 60, the ratio would be 1:3. So the taller one is the first one, 1:6, because the numbers are farther apart on a number line. And a ratio of 1:6 has (theoretically) twice the acceleration and half the top speed.
05-14-2005, 10:56 PM
#7
Senior Member
Thread Starter
My Feedback: (-1)
Join Date: Nov 2004
Location: , NY
Posts: 358
Likes: 0
Received 0 Likes
on
0 Posts
RE: gearing
is there some type of chart that explains your ratio for the gearing you have likewhen you say 10 pinion and 60 spur =1:6 . i just wanna fully understand what im doing. dont know much about gearing.
05-15-2005, 06:46 AM
#8
Senior Member
Join Date: Dec 2004
Location: Toronto,
ON, CANADA
Posts: 678
Likes: 0
Received 0 Likes
on
0 Posts
RE: gearing
I don't know about a chart, but there probably is one somewhere. All you do is set up the ratio of teeth 10:60 - 10 tooth pinion, 60 tooth spur, then you divide teh smaller # by itself and the bigger # by the smaller # and you get 1:6. with a ratio of 24:78, you divide the smaller # by 23, then the bigger # by 23 and you get 1:1.25
Or some people divide the numbers so you get a ratio with all whole numbers. so 24:78 would be 4:13. In this case I found the smallest number that goes into both 24 and 78, which is 6, and I divided both numbers by 6.
Hope this helps.
Or some people divide the numbers so you get a ratio with all whole numbers. so 24:78 would be 4:13. In this case I found the smallest number that goes into both 24 and 78, which is 6, and I divided both numbers by 6.
Hope this helps.
05-15-2005, 08:37 AM
#9
Senior Member
Join Date: Mar 2005
Location: Goleta,
CA
Posts: 139
Likes: 0
Received 0 Likes
on
0 Posts
RE: gearing
Hello Sgt Canada...Just looking over the gearing talk here. In my old car club days when someone ran a 4:11 rear end gear he would be able to accelerate quicker but have slower top end than someone with a say 3:78 rear (slower acceleration,more top speed). Any way my take is in RC racing what is important is better acceleration than top speed. All the slowing and speeding up at a track where there usually there are not real long straight aways would call for quick accel and slowing rather than a long sustained speed run. DBM [8D][8D]
