2LikesTamiya TRF418
08-18-2014, 03:40 AM
#1681
The track width is going to change either way but imperceptibly so. Don't sweat it.
08-18-2014, 03:47 AM
#1682
As new in TC, I have a question.
If you need more top speed on the strait, how do you know whether to go up a tooth or more in gearing or to increase some of the timing options in the speedo?
My son runs a 418 in kit setup, FDR gearing in the 8 region (according to table in manual to the 6.5T LRP X20 motor fitted), LRP Flow speedo in default settings.
Well, how do you know how to gain more top speed, play with gearing, speedo timing settings or both?
If you need more top speed on the strait, how do you know whether to go up a tooth or more in gearing or to increase some of the timing options in the speedo?
My son runs a 418 in kit setup, FDR gearing in the 8 region (according to table in manual to the 6.5T LRP X20 motor fitted), LRP Flow speedo in default settings.
Well, how do you know how to gain more top speed, play with gearing, speedo timing settings or both?
08-18-2014, 04:42 AM
#1683
08-18-2014, 04:49 AM
#1684
08-18-2014, 04:53 AM
#1685
Only catch is that they the plastic cups are actually not much cheaper than the steel ones, but the plastic cups will probably not wear the pins on the dogbones, saving the shaft.
08-18-2014, 04:55 AM
#1686
Don't forget the alu parts ! Tamiya 9804389
Andre
Andre
08-18-2014, 05:05 AM
#1687
08-18-2014, 08:17 AM
#1689
08-18-2014, 08:45 AM
#1691
08-18-2014, 10:14 AM
#1693
As new in TC, I have a question.
If you need more top speed on the strait, how do you know whether to go up a tooth or more in gearing or to increase some of the timing options in the speedo?
My son runs a 418 in kit setup, FDR gearing in the 8 region (according to table in manual to the 6.5T LRP X20 motor fitted), LRP Flow speedo in default settings.
Well, how do you know how to gain more top speed, play with gearing, speedo timing settings or both?
If you need more top speed on the strait, how do you know whether to go up a tooth or more in gearing or to increase some of the timing options in the speedo?
My son runs a 418 in kit setup, FDR gearing in the 8 region (according to table in manual to the 6.5T LRP X20 motor fitted), LRP Flow speedo in default settings.
Well, how do you know how to gain more top speed, play with gearing, speedo timing settings or both?
Anyway. All that motor timing will help but at the expense of torque (i.e. acceleration) for a given gearing. So will do gearing changes. But you already knew that. The advantage with dynamic timing is that you can decide by using the speedo settings when it kicks in. That way, you can have little timing applied at low revs to use the potential of the torque and once the revs build up you can have more timing added on.
Either way, watch motor temperatures.
Some motors can be geared to high heaven, others not so much. Hacker motors of the past had such huge torque, you'd run out of room to move the motor before you reached their peak.
What to change depends in principle on the track.
But.
Ideally, you should find the motor timing where it's at its best efficiency (not highest torque or RPM), find the optimal gear ratio for that (i.e. so it gives strong acceleration) and then add ESC timing and adjust when/how (delay/ramp) that kicks in.
Last edited by niznai; 08-19-2014 at 05:18 PM.
08-18-2014, 10:58 AM
#1694
All of the above plus timing on the motor. And a better motor. And a better battery (some will argue there's some black magic that gives some .0000001 sec a lap or some such). And so on.
Anyway. All that motor timing will help but t the expense of torque (i.e. acceleration) for a given gearing. So will do gearing changes. But you already knew that. The advantage with dynamic timing is that you can decide by useing the speedo settings when it kicks in. That way, you can have little timing applied at low revs to use the potential of the torque and once the revs build up you can have more timing added on.
Either way, watch motor temperatures.
Some motors can be geared to high heaven, others not so much. Hacker motors of the past had such huge torque, you'd run out of room to move the motor before you reached their peak.
What to change depends in principle on the track.
But.
Ideally, you should find the motor timing where it's at its best efficiency (not highest torque or RPM), find the optimal gear ratio for that (i.e. so it gives strong acceleration) and then add ESC timing and adjust when/how (delay/ramp) that kicks in.
Anyway. All that motor timing will help but t the expense of torque (i.e. acceleration) for a given gearing. So will do gearing changes. But you already knew that. The advantage with dynamic timing is that you can decide by useing the speedo settings when it kicks in. That way, you can have little timing applied at low revs to use the potential of the torque and once the revs build up you can have more timing added on.
Either way, watch motor temperatures.
Some motors can be geared to high heaven, others not so much. Hacker motors of the past had such huge torque, you'd run out of room to move the motor before you reached their peak.
What to change depends in principle on the track.
But.
Ideally, you should find the motor timing where it's at its best efficiency (not highest torque or RPM), find the optimal gear ratio for that (i.e. so it gives strong acceleration) and then add ESC timing and adjust when/how (delay/ramp) that kicks in.
08-18-2014, 11:00 AM
#1695
As new in TC, I have a question.
If you need more top speed on the strait, how do you know whether to go up a tooth or more in gearing or to increase some of the timing options in the speedo?
My son runs a 418 in kit setup, FDR gearing in the 8 region (according to table in manual to the 6.5T LRP X20 motor fitted), LRP Flow speedo in default settings.
Well, how do you know how to gain more top speed, play with gearing, speedo timing settings or both?
If you need more top speed on the strait, how do you know whether to go up a tooth or more in gearing or to increase some of the timing options in the speedo?
My son runs a 418 in kit setup, FDR gearing in the 8 region (according to table in manual to the 6.5T LRP X20 motor fitted), LRP Flow speedo in default settings.
Well, how do you know how to gain more top speed, play with gearing, speedo timing settings or both?
Unless you are running on a tiny indoor track
8:1 is about right for a 4-5t motor
Gear up, try around 6.5 to 7:1 for a 150' straight
Leave timing at default on motor, use Flow timing to fine tune how hard you want it to hit
temp at 4m