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Old 10-15-2008, 09:14 AM   #1
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Default x-ray t2'008 gear ratio

good day guys! just new with this sport, i have x-ray t2'008 and i was hoping you can help me out with what final drive ratio im suppose to use in a 27turn rebuildable motor and a 23turn rebuildable motor..? thanks in advance and God bless!
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Old 10-15-2008, 03:43 PM   #2
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That depends on what kind of track your running on but you could just get a set of pinion gears and make sure the motor stays at about 160-170 degrees tops.
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Old 10-15-2008, 04:19 PM   #3
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thanks!
ill be running on an asphalt track.. maybe you could tell me whats the average ratio or at what ratio to start from.. i set up the fdr at 6.5 with the stock 27turn rebuildable motor..
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Old 10-15-2008, 10:59 PM   #4
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That depends on what kind of track your running on but you could just get a set of pinion gears and make sure the motor stays at about 160-170 degrees tops.
160-170 too hot for stock 27T brushes motor...
The best way is to find the right gearing , What other racers their FDR is and go from there...
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Old 10-15-2008, 11:02 PM   #5
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thanks!
ill be running on an asphalt track.. maybe you could tell me whats the average ratio or at what ratio to start from.. i set up the fdr at 6.5 with the stock 27turn rebuildable motor..
dont' let the motor get over 150 deg. use the motor fan cooler,help

Run the car around the track three ot four times and check the brushes, to make sure the brushes is not turning colour or blue....( Blue is burnt)
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Old 10-21-2008, 07:37 PM   #6
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thanks a lot guys.. knowing the temperature of the motor is another problem for me, i dont have the device to monitor it.. hehehe!

regarding the fdr of other drivers, they won't tell me. they say they don't know. they just experiment on their spur and pinion but they again wont tell what they use..

im from a tropical country so its hot in here.. ill try get those cooling fan.
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Old 10-21-2008, 08:06 PM   #7
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160-170 too hot for stock 27T brushes motor...
The best way is to find the right gearing , What other racers their FDR is and go from there...
only if you want to be slow... 170 is fine after a 5 min run. It also depends on the motor somewhat. With trinity motors, over 180 is bad.with the reedy motors, they run hot (200ish).

My local track is a 110ft straight, and i run a 6.6 FDR.
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Old 10-22-2008, 04:24 AM   #8
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HI,

I use 17,5T on a carpet and my final ratio is around 4,45. (34T pulleys, 78/30)

I think you should use smaller spur gear (~74) for lower ratio.
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Old 10-22-2008, 05:00 AM   #9
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If you have a blue cobalt motor, start at a 7.5 ratio. If you have a green monster motor, start at a 8.0 ratio.
Sorry,I don't have info for the 23turn motors.
Hope that helps.

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Old 10-22-2008, 06:40 AM   #10
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thanks a lot for all the infos.. now i have an idea on where to start. really a big help.
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