R/C Tech Forums - Motor Timing Help

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Quote:

Originally Posted by Joosh M (Post 15164656)

Alright, so most of you seem to be saying that there is no "magic number" to set the motors to and that it is hard to compare motors based on amp draw. As for my lap consistency, I usually run in the top 3 positions in the A-main in the stock class at my local track, always higher than a 90% consistency ( I think this last Friday's race was a 97%). I finished 3rd this last week as well and it was simply because 2nd place was faster down the straight and was able to overtake me, hence my question concerning a faster motor. I think that I will just take a weekend and go down to the track and setup each motor and play around with gearing, timing and temperature to determine which one feels the fastest on the track. Ideally I believe that it would be the one that can run the fastest with the smallest gearing/lowest amount of timing and the least amount of heat.

How close to the other guys fastest lap times and race times are you? How close to your fastest lap is your top 5, 10, & 15 laps?

Usually when someone motors you on the straight in a spec class, it is because they carried more corner speed through the corner before the straight. If you are racing on a high grip surface like carpet it is easy to do pretty well by not crashing and going a good bit slower.

Sounds like you should be able to figure out some adjustments to lower your lap time.

I know guys that run 17.5 outa the box and turn the motors timing up to 47 and others that stay at 15.. i use my old aps dyno get the highest # of rpm per volt and kept heat under 125F

Quote:

Originally Posted by Volksford (Post 15164697)

The people that say don't use free amps either has someone tuning for them are more equip than the average joe. The average joe doesn't have an analyzer or dyno but he probably has a amp reading device. (DVOM). Also if doing an amp draw between battery and esc, the esc does draw a bit of power. On the order of half amp to 1amp.
As a guy that started with nothing and built up to dyno's, analyzes and stator equipment I can give you this info from an average guy point of view.

Many speed controls now have data logging capabilities. I look at the actual data the car is producing when I drive it. I sometimes make adjustments based on telemetry data. Data that most people could have access to. I know to look for such features when I select a speed control. I also know how to extrapolate the data and make the adjustment I want based on the data. Before esc's had built in data logging I used a stand alone data logger I bought used off here for $50. I still have this data logger too.

Once you understand the data and the way adjusments make it change, it gives you confidence in a change you want to make will make the car noticeably quicker on track.