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Surpass V4S Motors

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Old 02-07-2019, 10:41 AM
  #271  
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Based on those current draw numbers, I'd back off the timing a bit. 33* (and the resulting free-spinning current draw) sounds awfully high for a 6.5T motor.

AmiSMB, did you take timing reading on all of those motors?
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Old 02-07-2019, 11:31 AM
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Hmm, seems, that the stock motors are better than the modified. I exchanged all my SkyRc Ares Pro competition 17.5 and 13.5 to Surpass V4s and they have all better values @6.0A than the SkyRc.
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Old 02-07-2019, 01:42 PM
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Originally Posted by Davidka View Post
Based on those current draw numbers, I'd back off the timing a bit. 33* (and the resulting free-spinning current draw) sounds awfully high for a 6.5T motor.

AmiSMB, did you take timing reading on all of those motors?
V4S 6.5T with 19 Timing 4,[email protected],8V 4875KV
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Old 02-07-2019, 02:31 PM
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Originally Posted by Peter Dietrich View Post
V4S 6.5T with 19 Timing 4,[email protected],8V 4875KV
Is that how it was set when you ran it? I've only used the 17.5 & 13.5 and I find them to have what I perceive to be a very tight air-gap. The magnetic cogging is stronger/heavier than any motor I've ever had. This explains why I'm not seeing Kv #'s as high as other motors I have that are slower when in the car.

If you haven't tried your motor with the lower tiiming setting, try it geared up a tooth or two from where your Sky RC motor was, see if it'll pull more gear.

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Old 02-07-2019, 03:12 PM
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Originally Posted by Davidka View Post
Is that how it was set when you ran it? I've only used the 17.5 & 13.5 and I find them to have what I perceive to be a very tight air-gap. The magnetic cogging is stronger/heavier than any motor I've ever had. This explains why I'm not seeing Kv #'s as high as other motors I have that are slower when in the car.

If you haven't tried your motor with the lower tiiming setting, try it geared up a tooth or two from where your Sky RC motor was, see if it'll pull more gear.
No, it was set with the factory timing (33).
Didn`t try the 19 timing until now.
Next race day i will try the 19 timing higher gearing setup
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Old 02-08-2019, 09:47 AM
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wow so you guys are spinning up mod motors at basically 2S voltage with no load and no issues? remember doing that with some novaks back in the day and the rotor spun itself a part.

Been leary of doing that with mod motors ever since.
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Old 02-08-2019, 09:54 AM
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Originally Posted by Peter Dietrich View Post
No, it was set with the factory timing (33).
Didn`t try the 19 timing until now.
Next race day i will try the 19 timing higher gearing setup
Cool. I'm interested to hear how it turns out.
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Old 02-09-2019, 07:13 PM
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It has taken me a longer than I thought to build due family health issues but the dyno is almost ready
Parts to be able to run the motor only are on the way . Too.

The roller is a massive 3430 grams so it is a real test. I like the mini pro but the flywheel is to light in my opinion
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Old 02-10-2019, 05:26 PM
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It looks like I might be needing a new ESC now, one of mine has an intermittent fault. I see that Surpass make a bunch of different ones - what are their racing ones actually called? And anyone know where I could source one in New Zealand?
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Old 02-12-2019, 01:20 AM
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Originally Posted by Davidka View Post
Based on those current draw numbers, I'd back off the timing a bit. 33* (and the resulting free-spinning current draw) sounds awfully high for a 6.5T motor.

AmiSMB, did you take timing reading on all of those motors?
I did not take a timing reading as my motor checker is an older Team Powers model which does not have that function
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Old 02-12-2019, 05:24 PM
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Originally Posted by danny325is View Post
It has taken me a longer than I thought to build due family health issues but the dyno is almost ready
Dyno test
Parts to be able to run the motor only are on the way . Too.

The roller is a massive 3430 grams so it is a real test. I like the mini pro but the flywheel is to light in my opinion
What advantage do you see in testing with a heavy flywheel?
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Old 02-13-2019, 05:29 PM
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Have any of you tested the rotor strength and stator resistance in the V4S 17.5 ??
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Old 02-13-2019, 06:03 PM
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Originally Posted by clint View Post
Have any of you tested the rotor strength and stator resistance in the V4S 17.5 ??
for rotors Ive seen readings between 1630-1650 on the facts 2. For 17.5 Ive seen numbers from high 17s to low 18s on the facts 2.
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Old 02-13-2019, 07:07 PM
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Originally Posted by RC*PHREAK View Post


for rotors Ive seen readings between 1630-1650 on the facts 2. For 17.5 Ive seen numbers from high 17s to low 18s on the facts 2.
Those are some pretty legit #s for what these motors cost.
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Old 02-14-2019, 06:24 AM
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Originally Posted by Peter Dietrich View Post
@ AmiSMB

i can confirm your Surpass 6.5T V4 readings.

My Readings with the Sky RC Motor Analyser:
Surpass V4S 6.5T 33 Factory Timing 6,[email protected] 7,7V 5303KV
Sky RC 6.5T Ares pro competition the old sliver one 19 Factory Timing 4,[email protected] 7,9V 5575KV
Set the Sky RC to 33 Timing 5,[email protected] 7,8V 6000KV

I dident like the Surpass power Curve compared to the Sky RC.
In the lower and middle RMP range the Surpass has much less power then the Sky RC.
In the upper RPM Range the Surpass feelt very punchy.
The Sky RC has a much linearer power curve ( with Factory Timing dident try the 33 timing)

I have drove both motos in 2WD on Carpet with same FDR. (9,65)
i upgraded from an 8.5 ares to 8.5 v4s and the surpass felt much much better. Both on factory settings the v4s gave me same top speed with a much stronger rotor what resulted in noticeable traction improvement
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