saviown Posted January 16, 2015 Share Posted January 16, 2015 not sure on run times as never really used it till battery ran down, I was using a pair of thunder power 8s 5000mah 70c, was just trying it out at the time, the 10s I have is 10000 mah the 12s is 8000 mah that's max size I could get in battery box, not very high c rating but I bought them for the run time, Quote Link to comment Share on other sites More sharing options...
Tug Posted January 16, 2015 Share Posted January 16, 2015 That's some serious cells you got there! Quote Link to comment Share on other sites More sharing options...
saviown Posted January 16, 2015 Share Posted January 16, 2015 fingers crossed I wont damage the transmission or esc/motor, but as its a bit of fun, if it does I will just replace them, Bruno said to use esc at higher voltage on my esc not at 6/7/8s, he did tell me the reason why but I forgot Quote Link to comment Share on other sites More sharing options...
Tug Posted January 16, 2015 Share Posted January 16, 2015 Probably to stay with the mantra "volt up, gear down". It reduces current draw and is therefore easier on the ESC. The ESC doesn't have to carry as much Ampage, it also suffers less volt drop which would be caused by the cells struggling to keep up with the motors demands. 1 Quote Link to comment Share on other sites More sharing options...
saviown Posted January 16, 2015 Share Posted January 16, 2015 thanks for that explanation, brunos went straight over my head Quote Link to comment Share on other sites More sharing options...
Tug Posted January 16, 2015 Share Posted January 16, 2015 Welcome. Wow! How far off topic? Quote Link to comment Share on other sites More sharing options...
saviown Posted January 16, 2015 Share Posted January 16, 2015 keeping sky in the news lol Quote Link to comment Share on other sites More sharing options...
darrenelmslie Posted January 16, 2015 Share Posted January 16, 2015 I've got one of these thats been running well in a 5b, paired with a Toro Beast 910kv motor. I'm stripping/rebuilding the car at the moment so should have it running in a week or so. I've got a Toro 780kv to try in it as I'd like more torque than top-end but will try it on the 910 to start with. I'm also waiting on a skylink and progbox for it as I want to check the settings first. I think these must be a v2? The 'original' 200A escs had the twin fans on them. I'll be keeping an eye on the temps to see if they need retro-fitting in my application (if the ESC holds together!) but from what I've read, it handles the heat well. Interrestingly, SKYRC also sell Bluetooth and WIFI modules for it. They're touting them for firmware upgrades but it'd be useful if you could get some telemetry back this way. I'll report on the logging/programming software once I've received the skylink. From what I've seen it's not as polished as Castle's. Some thing I'm not too sure of is that it has a throttle/rx connection, plus 2 BEC outputs. I'm wondering if, with the ESC connected to the RX and receiving throttle signals down the signal wire, whether it'll provide BEC voltages over the power wire? If not I'd need to run a second lead between the BEC output back to the RX (and presumably cut the supply wire on the throttle link) there's no mention about this and no response yet from SKYRC who I mailed last nigt (doesn't bode well for the support does it..!) Quote Link to comment Share on other sites More sharing options...
saviown Posted January 16, 2015 Share Posted January 16, 2015 I have, in the past emailed skyrc, many times, never received a reply, I wont be buying their products again Quote Link to comment Share on other sites More sharing options...
darrenelmslie Posted January 16, 2015 Share Posted January 16, 2015 Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
darrenelmslie Posted January 16, 2015 Share Posted January 16, 2015 (edited) Saviown: Out of curiosity, are you running any fan cooling on your motor? My old Castle-converted Baja had the twin-fan shroud Castle provide for their 2028 but I notice none of the HPI Flux's run them any more. My Toro motor wasn't fitted with any additional cooling by the previous owner as it didn't seem to need it. I'm just wondering how many 1/5 scale brushless owners actually find they need one on their motors. It's gotta be one less thing to cause problems if the temps are low enough. Edited January 16, 2015 by darrenelmslie Quote Link to comment Share on other sites More sharing options...
Tug Posted January 16, 2015 Share Posted January 16, 2015 I think the highest temp I recorded was mid forties. That was on a warm day too. 1 Quote Link to comment Share on other sites More sharing options...
saviown Posted January 16, 2015 Share Posted January 16, 2015 yes I am using a castle cooling twin fan, had to cut and modify as tp motor is smaller in length than cc 2028, not pretty but it works Quote Link to comment Share on other sites More sharing options...
darrenelmslie Posted January 16, 2015 Share Posted January 16, 2015 That's good to hear Tug. Is that value with any motor cooling? I didn't realise the Toro esc had data logging. I was eventually going to use an EagleTree I had spare to log the lipo, esc and motor temps Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Noj Posted January 16, 2015 Share Posted January 16, 2015 Never used a fan on our 2028's, never been a need, even on the hottest of days. Their overall performance and reliability has been fantastic; think in, I fitted one to the losing 5ive and despite getting hot (hitting 31,500rpm on 10s, oops!) it pulled like a train, well over 50mph which in a 5ive, I consider excellent performance. Watching the vid of this ESC in action, it seems to run smoothly with no cogging, and it does sound exactly like the xl2 in every way, lol. Imitation is the sincerest form of flattery.... 1 Quote Link to comment Share on other sites More sharing options...
Deafty Posted January 16, 2015 Share Posted January 16, 2015 I have, in the past emailed skyrc, many times, never received a reply, I wont be buying their products again Same with me until I phoned them. This opened an email correspondence. Were helpful and bent over backwards for me. (albeit, unrelated product) 1 Quote Link to comment Share on other sites More sharing options...
darrenelmslie Posted January 16, 2015 Share Posted January 16, 2015 Thats awesome Noj. I'm keen to do a brushless 5ive in the future. Great to hear that even in a more confined space and with more of a load from the geartrain, that motor cooling at least on the 2028 isn't an issue. I guess it'll be dictated a bit by motor timing; but that aside, they must be damn efficient; they're up in the 7kw range after all, that's a lot of energy it's getting rid of. As a slight aside, I'mamazed no-one makes a dual-lipo alarm. Pretty much all large scale are running more than a single pack aren't they? I'm thinking of running a pair of the bog-standard alams (although I'm using cased versions) mounted on the battery box. It won't be as neat as it could be but it'll work. Quote Link to comment Share on other sites More sharing options...
Tug Posted January 16, 2015 Share Posted January 16, 2015 That's good to hear Tug. Is that value with any motor cooling? I didn't realise the Toro esc had data logging. I was eventually going to use an EagleTree I had spare to log the lipo, esc and motor temps Sent from my iPhone using Tapatalk Never used a fan, was tempted to get one until I saw one in use with all its blades snapped off from a few jumps. 1 Quote Link to comment Share on other sites More sharing options...
sean-vrs Posted January 16, 2015 Share Posted January 16, 2015 (edited) if you check the spec of the sky toro780kv and the castle 2028 780kv they are "roughly" exactly the same! no wonder they sound similar this also looks very "similar" to the combo sold at rcmodelz Edited January 16, 2015 by sean-vrs Quote Link to comment Share on other sites More sharing options...
Tug Posted January 16, 2015 Share Posted January 16, 2015 I think the sound is generated by the ESC, on start up the ESC agitates the rotor and makes it ring, that's what makes the beeps that you hear. What I was referring to was the sound of the motor as the car is actually on the move, very reminiscent of any car powered by a Castle ESC, regardless of the motor connected to it. Quote Link to comment Share on other sites More sharing options...
sean-vrs Posted January 16, 2015 Share Posted January 16, 2015 I think the sound is generated by the ESC, on start up the ESC agitates the rotor and makes it ring, that's what makes the beeps that you hear. What I was referring to was the sound of the motor as the car is actually on the move, very reminiscent of any car powered by a Castle ESC, regardless of the motor connected to it. well the motor looks like a clone and the esc appears to have similar characteristics, this might prove to be a good buy! Quote Link to comment Share on other sites More sharing options...
Tug Posted January 16, 2015 Share Posted January 16, 2015 Give us a full report! Quote Link to comment Share on other sites More sharing options...
Noj Posted January 16, 2015 Share Posted January 16, 2015 Seconded. If companies like sky are upping their game in terms of ESC reliability for fifth scale, it can only be a good thing for the hobby. The number of large scale BL builds on this forum is on the up, fo sho! Has the I/C beast had its day?? Quote Link to comment Share on other sites More sharing options...
Carpmart Posted January 16, 2015 Share Posted January 16, 2015 Place for both surely Noj? Quote Link to comment Share on other sites More sharing options...
Tug Posted January 16, 2015 Share Posted January 16, 2015 Seconded. If companies like sky are upping their game in terms of ESC reliability for fifth scale, it can only be a good thing for the hobby. The number of large scale BL builds on this forum is on the up, fo sho! Has the I/C beast had its day?? Antagonist! IC is here to stay, that's a cert, but so is BL. As Noj has said, we need more companies producing largescale leccy systems. The more there are, the more competitive they'll get. For example, look at MGM, it was only in the last year, maybe two, that they introduced their "lite" range. This is clearly their way of fighting back against the likes of HW and Hobbyking. Even Castle have had to rethink their range and released the cheaper smooth can motors and cheaper ESCs. Look at the Mamba Monster 2! The fan is no longer integral, it's no longer thermostatically controlled! It just plugs into the Rx separately to the ESC plug. This is all done to lower manufacturing costs! So yes, more companies making large leccy stuff is a must! 2 Quote Link to comment Share on other sites More sharing options...
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