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Old 07-01-2004, 02:25 PM   #1
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Default gearing

Does anyone know the best gearing for a tc3? the gearing i have right now is

27 T Pinion
72 T Spur
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Old 07-01-2004, 02:44 PM   #2
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Need to know what motor and tires
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Old 07-01-2004, 02:47 PM   #3
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if it's the AE 19 turn you have under your post ......thats pretty close for that motor......mabe try a 26
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Old 07-01-2004, 11:17 PM   #4
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yes try around a 7.0 final .. what would be close is like joe said a 26 pinion ,, or you can try in the mid 6's ive had very good luck.. also make sure of track situation .. sweeping , or tight track and adjust as needed ..
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Old 07-01-2004, 11:22 PM   #5
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Default reedy

If you have the REEDY 19t #513 quad magnet at the Reedy Race we were running that motor around 5.7 If your running stock it depends on which motor your running 7.0 is a good place to start. you can also check out the other forums on this site ie the stock motor forum and the 19t forum
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Old 07-01-2004, 11:24 PM   #6
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if your running a monster stock a 7.0 to 7.5 ratio is always nice with the TC3
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Old 07-09-2004, 11:53 AM   #7
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Hey guys,

I have a xxx-s gp with a reedy 19t quad mag. Our hobby shop has a small 50 x 30 carpet track. Right now I am running a 90t spur and an 18t pinion 48 pitch. How should I gear this thing? So it's not too hot but still maintains it's performance?
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Old 07-09-2004, 12:40 PM   #8
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For the Reedy Quad 19t on a small track I'd go with about 6.5 - 7.0 final drive ratio (that's 6.5 - 7 turns of the motor to rotate your tires once). I'm running a 100spur with 41 pinion on my tc3 on a 94'x40' track. It's probably not as technical as yours so I can gear taller (taller = smaller ratio number). I'm also using 64 pitch gears. My tires are also 60mm right now... as they get smaller the raitio I run drops below 6.0.

If you are using a 90 spur and 18 pinion your final drive ratio is like 12.5. Your motor probably raps out almost instantly. You are WAY under geared. BTW... a motor can get pretty hot when undergeared that far.

Try a 32 pinion and then go up or down based on your lap times. The 32 gets you to a 7.0 final drive ratio. Your track may be technical enough that you'll have to go up more than that but I can't say without seeing the layout. I wouldn't think you would ever need to go over 7.5 with a reedy quad 19t motor since they have WAY more torque than most other 19t motors.

Hope that helps.
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Old 07-09-2004, 06:04 PM   #9
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Quote:
Originally posted by UnderDaHill
For the Reedy Quad 19t on a small track I'd go with about 6.5 - 7.0 final drive ratio (that's 6.5 - 7 turns of the motor to rotate your tires once). I'm running a 100spur with 41 pinion on my tc3 on a 94'x40' track. It's probably not as technical as yours so I can gear taller (taller = smaller ratio number). I'm also using 64 pitch gears. My tires are also 60mm right now... as they get smaller the raitio I run drops below 6.0.

If you are using a 90 spur and 18 pinion your final drive ratio is like 12.5. Your motor probably raps out almost instantly. You are WAY under geared. BTW... a motor can get pretty hot when undergeared that far.

Try a 32 pinion and then go up or down based on your lap times. The 32 gets you to a 7.0 final drive ratio. Your track may be technical enough that you'll have to go up more than that but I can't say without seeing the layout. I wouldn't think you would ever need to go over 7.5 with a reedy quad 19t motor since they have WAY more torque than most other 19t motors.

Hope that helps.
Thanks for the info...I'll try it out.
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Old 07-13-2004, 06:50 PM   #10
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Quote:
Originally posted by UnderDaHill
I wouldn't think you would ever need to go over 7.5 with a reedy quad 19t motor since they have WAY more torque than most other 19t motors.

Hope that helps.
Thanks man. The car seems faster and isn't as hot. I'll shoot the temps out in a couple of days. Do you know where the temps need to be?
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