Russell iow Posted October 20, 2021 Share Posted October 20, 2021 Is there any disadvantage if you over spec a ESC? I want a ESC for a 1/8 truggy, my Thunder Tiger st1. I had fitted a max 8 and a 2200kv motor but the motor got very hot running 6s and I have since fitted that combo in my hyper vse. It still gets warm in that at 3s. In either case I don't think the ESC got hot but can't me sure. I plan to run both on 4s but may occasionally go 6s on the truggy. Quote Link to comment Share on other sites More sharing options...
Bajadre Posted October 20, 2021 Share Posted October 20, 2021 i run my truggy on 6s with a max 8 and cc motor (used the hw one before no problems ) only time i get heat problems is on a VERY hot day russ shouldnt even warm on 3s maybe binding in the drivetrain or something? wheel size will matter too if running MT tyres id try gearing it down first and see if the temps are better 👍 1 Quote Link to comment Share on other sites More sharing options...
Kpowell911 Posted October 20, 2021 Share Posted October 20, 2021 Theres nothing wrong with over speccing an ESC provided you have the space for a Max 6, But Id say your 2200kv motor is either too high of a Kv (Id suggest around 1900kv) or youre geared too high Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted October 20, 2021 Share Posted October 20, 2021 a hot motor is usually a gearing issue..... but if the motor was hot, not the ESC....then the ESC was fine. 1 Quote Link to comment Share on other sites More sharing options...
Bert_w164 Posted October 20, 2021 Share Posted October 20, 2021 (edited) Could you please define warm? Depending on what you define as warm, this may be normal. What's your cooling solution like? 2200kv on 6s isn't easy to tame without some good air flow. I run the same setup (albeit sensored) and this is pretty normal. Running on 3s generates heat too, but nothing major, e.g. I can hold the motor once a 3s /4s cell is depleted without issue. Depending on the shell, e.g. when I used a narrower shell with less air flow, 4S on 16T 2200kv was a challenge... Edited October 20, 2021 by Bert_w164 2 Quote Link to comment Share on other sites More sharing options...
Yrkoon Posted October 21, 2021 Share Posted October 21, 2021 (edited) 8 hours ago, Russell iow said: Is there any disadvantage if you over spec a ESC? I want a ESC for a 1/8 truggy, my Thunder Tiger st1. I had fitted a max 8 and a 2200kv motor but the motor got very hot running 6s and I have since fitted that combo in my hyper vse. It still gets warm in that at 3s. In either case I don't think the ESC got hot but can't me sure. I plan to run both on 4s but may occasionally go 6s on the truggy. i don't see a problem in overspeccing the esc, (a motor will draw as much current as it wants) but your motor getting hot sounds more like a gearing issue to me 🙂 the only issue would be the opposite where a motor draws too many amps from a lower specced esc and the esc goes pop 🙂 Edited October 21, 2021 by Yrkoon Quote Link to comment Share on other sites More sharing options...
Russell iow Posted October 21, 2021 Author Share Posted October 21, 2021 Ok thanks all. The motor was just a bit to hot to hold my hand on for more than a couple seconds when running 3s. I plan to run it on 4s so I will change the gearing when I do that and try again. Quote Link to comment Share on other sites More sharing options...
Bert_w164 Posted October 21, 2021 Share Posted October 21, 2021 Check meshing isn't too tight and what pinion gear are you running - air flow is really important, if air isn't flowing past your motor no matter what you do with gearing the heat will continue to build. I'm geared up beyond spec at the moment and I don't have cooling issues anymore, even on 6S - and that's all down to air flow. My 2200kv motors seem to run a fair bit hotter than my 2000kv of the same can size... Quote Link to comment Share on other sites More sharing options...
Juanmacine Posted October 27, 2021 Share Posted October 27, 2021 The best way to know the temps is to use a hand infrared thermometer. Quote Link to comment Share on other sites More sharing options...
Russell iow Posted October 27, 2021 Author Share Posted October 27, 2021 What's the recommended max temp for ESC and motor? Quote Link to comment Share on other sites More sharing options...
Juanmacine Posted October 27, 2021 Share Posted October 27, 2021 8 minutes ago, Russell iow said: What's the recommended max temp for ESC and motor? Here is the table where the brand says to you the thermal limits for this ESC: And for the motor the image below: Quote Link to comment Share on other sites More sharing options...
dazp1976 Posted October 29, 2021 Share Posted October 29, 2021 On 20/10/2021 at 19:00, Nitroholic said: a hot motor is usually a gearing issue..... but if the motor was hot, not the ESC....then the ESC was fine. Unless you are permanently running on a grass field. I generally have to drop about 5 teeth on the pinny if I come off the black stuff onto the grass. Quote Link to comment Share on other sites More sharing options...
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