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Old 04-27-2013, 09:19 AM   #1
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Default Blinky class esc

Will a 120a esc in blinky mode have an advantage over a 45a spec class esc?

I intend to compete in 13.5t and 17.5t touring car non-boost class

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Old 04-27-2013, 10:01 AM   #2
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I can't see how it would.

I assume you're comparing a Hobbywing 120a to a Justock 45a. For stock racing, a Justock is a great choice.
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Old 02-24-2014, 10:01 PM   #3
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Sorry to bump an old thread, but this is related to the same question.
It seems to me that the 120A, Xtreme Stock and Justock weigh in differently.
How significant would you think this weight would be, if it is say 20 grams, or at worst 30 grams?

Would that nullify any difference in internal resistance? Or does the IR of 0.0003 vs 0.0006 vs 0.0008 make a big difference?

I'm not used to electric so I have to ask.
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Old 02-24-2014, 10:57 PM   #4
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No difference in blinky except with respect to weight distribution.

I've run the v2.1 120a, 60a, 90a, Justock, Xtreme Stock and Stock Spec. Doesn't make a single bit of difference which one you choose.
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Old 02-24-2014, 11:34 PM   #5
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Probably find the size wire (weight) you use has more of an effect on lap times than the volt drop of the ESC.
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Old 02-25-2014, 12:18 AM   #6
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Ok, so you'd think that 14awg instead of 12awg, for weightsaving, and the 20 gram lighter esc might be an advantage then?

Because one could easily assume thicker wire would be leading more current?

Thanks for the replies
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Old 02-25-2014, 09:32 PM   #7
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So looking for a budget roar ESC what do you guys like the most
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Old 02-25-2014, 10:53 PM   #8
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Quote:
Originally Posted by TeamThibault View Post
So looking for a budget roar ESC what do you guys like the most
Didn't you... just read through this thread?
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Old 02-26-2014, 12:50 AM   #9
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Quote:
Originally Posted by Eivind E View Post
Ok, so you'd think that 14awg instead of 12awg, for weightsaving, and the 20 gram lighter esc might be an advantage then?

Because one could easily assume thicker wire would be leading more current?

Thanks for the replies
It depends on your chassis, battery, servo, motor, body, and min weight limit.

For example, with an Xray T4 2014, Sanwa SRG-BLS (2-3g heavier than some servos), a 6800mah battery (325g), LRP x20 (165g, lighter than some motors), and LRP Flow Worksteam (4xg), and a motor fan behind the motor (10g), I have to hang the ESC off the chassis about 4mm for left/right balance, and add 20+ grams in the middle to meet min weight of 1380g. That's with long 12ga wires and a LW body. So with that setup, a heavier esc would be totally fine, because I coud remove weight and move the ESC inboard.

If I ran an Mi4 or Mi5, or a tub chassis car, I'd want a lighter battery to keep weight down, and probably even opt for 14ga wire. Similar would be true if I had a european 1350g min weight. And then I wouldn't want to go with a heavier ESC.

-Mike
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Old 02-26-2014, 02:01 AM   #10
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Don't forget that (if comparing a HW v3.1 with a HW Justock) you may not get more speed out of the v3.1, but you will get more tuning options. Like more drag brake steps.
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Old 03-05-2014, 05:46 AM   #11
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Internal resistance is the issue. We have dyno tested a few "blinky" ESC's and where all are equal on the rpm they let a motor produce, they are not equal when it comes to the torque they let it produce.
Also as stated the programmability of them can give advantages in torque control and braking.
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Old 03-05-2014, 11:48 AM   #12
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Novak impact esc is perfect for blinky !!!
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Old 03-05-2014, 11:49 AM   #13
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Quote:
Originally Posted by old_dude View Post
Internal resistance is the issue. We have dyno tested a few "blinky" ESC's and where all are equal on the rpm they let a motor produce, they are not equal when it comes to the torque they let it produce.
Also as stated the programmability of them can give advantages in torque control and braking.
Which ones did you find produced the most torque?
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Old 03-05-2014, 11:53 AM   #14
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The torque difference is minimal, and will not yield better performance at all.....
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Old 03-05-2014, 03:37 PM   #15
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Quote:
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Which ones did you find produced the most torque?
Hobbywing was better than Tekin or Novak. Tekin and HW had the same peak rpm from motor but the HW showed much better torque. That is why the oval racers prefer them. Castle seems to show very good on the track also but not tested. Testing was done on a TurboDyno setup for sensored/brushless. New HW's (V3 and 3.1) seem to be better yet but from a performance standpoint in oval but we did not dyno them.
Oval racing is the true test of torque in your motor, battery and esc combo. If any one is a little weak it will show up. Racers hunt for hundredths of a second per lap. At the Spektrum/CRC race .05/lap was the difference between the "A" and the "C".
In on-road the variability in lap time mainly comes from driving inconsistency. A good oval racer can keep his laps within a couple of tenths when not in traffic.
I actually look for my top 20 average to be .1 slower than my fast lap and my last 5 to be about .3 off of the fast lap from motor heat and lower voltage.
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