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Old 12-26-2011, 02:27 PM   #1
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Questions?? Measurement of Run time for RC

Hi All,

I am in this hobby for about a year(1/10 17.5 Blinky Touring).
Since I sometime encounter situations that required to explain run time for my equipments, I am bit confused about measurement of "Packs" used.

Could I ask you guys to explain how to understand "Packs".
Each batteries have various capacities and C rating and I just do not understand how I should describe run time of my equipment without misunderstand someone I deal with.

Thanks in advance.
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Old 12-26-2011, 04:15 PM   #2
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The problem becomes one of definition as there really is no standard.

To a 'racer' a 'pack' is typically one qual or main run, typically 5-8 minutes, depending on class. So with a typical race day of 3 quals and a main, that could be stated as 4 packs, or 1 race day. Racers of most any discipline rarely run to low voltage cut off, even in practice runs.

To a 'basher' a 'pack' typically means running the battery until low voltage cut off, which can be anywhere between 10-45 mintues, depending on equipment and useage.

Feel free to define your own terms and useage!
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Old 12-26-2011, 06:07 PM   #3
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Quote:
Originally Posted by 91420l View Post
Hi All,

I am in this hobby for about a year(1/10 17.5 Blinky Touring).
Since I sometime encounter situations that required to explain run time for my equipments, I am bit confused about measurement of "Packs" used.

Could I ask you guys to explain how to understand "Packs".
Each batteries have various capacities and C rating and I just do not understand how I should describe run time of my equipment without misunderstand someone I deal with.

Thanks in advance.
The term packs, like "I ran ten packs today" is the amount of time per heat. So 6 minutes for touring car, 8 minutes for 1/12.

That's if your talking to a racer... Talking to a basher, it doesn't really apply, since they could have ran it for 6 minutes too but 3 minutes of that time could has been spent mid air back flipping their house.
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Old 12-26-2011, 09:04 PM   #4
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Thanks for the info.
So I may say 6min - 1 pack of run time as long as I run 17.5 Blinky 1/10.

I set my practice run time for 7 to 8 min depends on the battery pack capacity that I run with. In the case, I have to adjust how to calc. "Pack" count accordingly right?
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Old 12-26-2011, 11:07 PM   #5
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It's really not a major measurement. It's more of a measure of how much maintenance we do on our stuff, IMO. For example, some guys rebuild ball diffs every 4 "packs". So pretty much every 4 times they're on track they do a diff rebuild.

Just the way I see it.
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Old 12-27-2011, 12:46 AM   #6
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The only quantifiable amount I can think of is the mah put back into the battery during charge. For blinky gear ratio and your driving smoothness should be all that drains your packs differently. I run boosted, so I can see different amounts of used mah depending on how the speedo profile is set up.

In terms of run time, on a very small track I've managed a 15minute race and the car still felt ok, but it was compared to the other racer who also had been on the track for the same time. You could do two race runs on one pack, but you lack punch and top end against someone who had topped up or changed their pack.
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Old 12-27-2011, 01:22 AM   #7
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When I practice with my touring car, 1 pack is around 8 minutes I think. I stop running when I feel that most of the punch is gone and the tires are losing grip (additive working out).

On a raceday, 1 pack is 5min.
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Old 12-27-2011, 10:34 AM   #8
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Thanks for all the input.
So.. "Paks" is an approximate description of equipment usage that may require additional background of info to be more precise.

Well, I just would like to avoid to provide misinformation to someone when I sell/buy stuff from racers.

Thanks again and you guys have great new year!

takeshi
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