09-03-2017, 04:03 AM | #341 | |
Quarry Creeper Join Date: May 2009 Location: Scotland, UK
Posts: 401
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
Is that true? I thought that was only the case with linear BECs not switching type BECs like the 1080 has | |
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09-05-2017, 01:17 PM | #342 | |
RCC Addict Join Date: May 2015 Location: Price Twp.
Posts: 1,291
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
Amp x volts=watts. Watts is the expression of power needed to complete work. The work hasnt changed so to balance the equation the Amps used must decrease. But that doesnt mean anything so long as the Amp x volts meets or exceeds the wattage needed to opperate your servo. Sent from my SM-G928V using Tapatalk Last edited by Ditchrat; 09-05-2017 at 01:20 PM. | |
09-05-2017, 02:06 PM | #343 | |
Quarry Creeper Join Date: May 2009 Location: Scotland, UK
Posts: 401
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
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09-05-2017, 04:52 PM | #344 | |
Quarry Creeper Join Date: Aug 2016 Location: The Netherlands
Posts: 334
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
It will not provide the same Amps, it will provide the same power (Watts). Since with 3S you're increasing the Volts, the supplied Amps go down for the same Wattage. It's the maximum power draw (the Watts) being limited by heat, which is what kills components. | |
09-05-2017, 04:58 PM | #345 |
Quarry Creeper Join Date: May 2009 Location: Scotland, UK
Posts: 401
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC
I'm still confused. I was in the understanding that regardless if it's 2s or 3s input on on the 1080, the BEC output was either 6v 3a regardless. It has a switching type BEC so it doesn't convert the higher voltage to a lower voltage by heat. That's liniar BECs |
09-05-2017, 05:14 PM | #346 | |
Quarry Creeper Join Date: Aug 2016 Location: The Netherlands
Posts: 334
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
I mean, I could be wrong. Was pretty sure I read it in the manual, but can't find it right now. Regardless, I still think it power draw that's the limiting factor. Switching in general generates heat as well (main problem for mosfets). Not 100% sure though, since I don't know enough about wrangling angry pixies (electricity) to explain it clearly. | |
09-05-2017, 11:25 PM | #347 |
Rock Crawler Join Date: Mar 2016 Location: Zagreb, Croatia
Posts: 747
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC
Depends on the circuit. It could be limited by either. Only Hobbywing engineers know... |
09-06-2017, 07:47 AM | #348 |
Newbie Join Date: Jun 2016 Location: Canada
Posts: 29
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC
Has anyone tried this esc on a dual 35t motor setup and a 400oz servo on 3s?
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09-06-2017, 09:13 AM | #349 | |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,935
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
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09-06-2017, 09:17 AM | #350 |
Newbie Join Date: Jun 2016 Location: Canada
Posts: 29
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC
the dual one says BEC Output 3A/5V (Switch Mode) :(
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09-06-2017, 02:52 PM | #351 | |
Quarry Creeper Join Date: May 2009 Location: Scotland, UK
Posts: 401
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
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09-06-2017, 03:12 PM | #352 | |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,935
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
The specs for the 1080 say: Brushed Motors 540/550/775 Series 2S LiPo or 6S NiMH: ≥10T or\RPM<30000@7.4V 3S LiPo or 9S NiMH: ≥16T or RPM<20000@7.4V I believe that means it can support two 20T motors on 2S. So if that's correct than two 35T's shouldn't be an issue. | |
09-06-2017, 03:29 PM | #353 | |
RCC Addict Join Date: May 2015 Location: Price Twp.
Posts: 1,291
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
Let me put it this way, you want to fill a pool at a rate of 6 gal per minute but only have a hose that delivers 12 gal per minute. You only want 6 gal per minute. You split the hose and put 6 gal per minute into a bucket and 6 gal per minute into the pool. You then turn of the hose at the same time you open a valve from the bucket. Once the buckets empty you turn on the hose again. It all happens so fast that there is not interruption in the fill rate. So your switching bec is about 90% (often more)efficient. Unlike a linier that burns up the extra as heat, the switching loses some(to heat)from the creation and dissipation of the magnetic field. Now back to your 2s vs 3s. If your BEC out put is 6V@3A the your wattage is 18 watts. Using 2s your voltage is 7.4 so 7.4(Amps)=18 your input Amp should be 2.4 Using 3s your voltage is 11.1 so 11.1(amps)=18 your input Amp should be 1.6 None of that considers the heat loss. Now your BEC will put out a maximum of 6V@3A, regardless of what your input is(so long as it is more then the output). The actually out put of your BEC completely depends on what the device you are powering is asking for. If you have a 6v LED that draws 20mA then that's all that is coming out of the BEC. The only time the output voltage drops is when the demand exceeds the amps available. Amp is the volume of energy being used, voltage is the pressure in which it is supplied. (not exactly accurate but the commonly accept analogy) Hope this helps some. Last edited by Ditchrat; 09-06-2017 at 03:33 PM. | |
09-06-2017, 04:42 PM | #354 | |
Quarry Creeper Join Date: May 2009 Location: Scotland, UK
Posts: 401
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
Great information and explanation. Thank you. | |
12-12-2017, 09:12 AM | #355 |
Newbie Join Date: Nov 2016 Location: France
Posts: 33
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC
Does anyone has feedback with a Holmes Crawlmaster 16T or 13T? Regarding the specs above, this little boy handle: 2S LiPo or 6S NiMH: ≥10T or\RPM<30000@7.4V 3S LiPo or 9S NiMH: ≥16T or RPM<20000@7.4V I run it with and oldy bu trusty Novak Rockstar 35T; it work fine. I made a G6 and won a local comp' with it but now it is time for a "fresh" motor. Right now I use 2s battery but I keep in mind, in a close futur, to use 3S. So basicaly, a 16T should be the motor to choose. Thanks! Last edited by RockyMtn; 12-12-2017 at 09:14 AM. |
12-12-2017, 11:04 AM | #356 |
RCC Addict Join Date: Jun 2017 Location: Canada
Posts: 1,742
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC
If im not mistaken the crawlmaster is a 5-slot motor so the turn count cannot be compared directly with 3-slot motors like the Traxxas Titan line-up. Maybe John himself will jump in to explain but it's been posted on this forum before. Sent from my Nexus 6 using Tapatalk |
12-12-2017, 09:23 PM | #357 |
Quarry Creeper Join Date: Aug 2016 Location: Christiansburg
Posts: 279
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC
I run the Crawlmaster Pro 13T and 1080 in my SCX10.2. Zero issues with heat, etc. It's nice and smooth. Plenty of Torque and wheel speed, but not too fast. Jboucher is correct. It's a 5 slot motor so it's speed isn't equivalent to typical turns. From RPPHobby: All Kv (rpm per volt) measurements taken at zero timing, no load, and 7 volts: 11t = 2675Kv 13t = 2250Kv 16t = 1850Kv 20t = 1500Kv |
12-13-2017, 12:30 AM | #358 | ||
Newbie Join Date: Nov 2016 Location: France
Posts: 33
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
Quote:
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12-14-2017, 06:21 AM | #359 |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,935
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC
FYI HobbyWing Direct is having a sale. Use the code TIME2GIVE17 to get the WP 1080 for $35.69 shipped! I picked up two last night. The coupon code applies on everything. https://www.hobbywingdirect.com |
12-14-2017, 07:45 AM | #360 | |
Slow is the new Fast Join Date: Nov 2013 Location: Winterpeg
Posts: 2,905
| Re: Hobbywing Quicrun Waterproof 1080 Brushed Crawling ESC Quote:
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