Motor very hot - Tekin gen1 sensored In my Bomber I got a 17 tooth pinion and 56 spur. Esc is a mamba max pro, and motor is tekin gen 1 redline 13.5 turn sensored. After 10min or so of running, the motor is hot so that I can't even have my finger on it for a second. Is this OK to run the motor with this type of heat? The Bomber is probably reaching 20-25mph. I like the speed. |
Re: Motor very hot - Tekin gen1 sensored I ran a Gen 1 13.5 in my Wraith on 3s geared at 13/56 and didn't have heat issues. Given they are similar in size and weight I'd say your geared way too high. You should be able to hold a finger anywhere on the motor for a count of 3. If it burns you immediately, its way too hot. Sent from my XT1575 |
Re: Motor very hot - Tekin gen1 sensored So in order to go faster do I need a lower turn motor like a 10 turn or 8 turn? I like the sensored motor I have because you have good control at low speeds. Maybe a tekin 8.5 turn redline? |
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that is geared way too high! you want speed, then gear down and volt up! what battery are you currently running? |
Re: Motor very hot - Tekin gen1 sensored A 3s |
Re: Motor very hot - Tekin gen1 sensored So 64/12 gearing maybe (which was stock) and what kind of motor that is sensored and can have my bomber go 30-40 mph? I don't know why you would gear down. I thought to go faster you gear up like 56/13 which I have now. |
Re: Motor very hot - Tekin gen1 sensored you gear down to save the motor and then volt up to make it turn faster, thereby going faster...if you run 2s on 64/12 and then run 3s on the same gear set, the 3s will be going much faster....that being said...if you want 30-40mph out of your bomber, then you will have to get a better brushless sensored motor..like the proHD3500 or similar motor. Holmes Hobbies has a few brushless motors that would do the job... |
Re: Motor very hot - Tekin gen1 sensored OK got what you mean. What about Castle 3800kv motor https://www.amazon.com/Castle-Creati.../dp/B004QQSKC4 Or Turnigy TrackStar SCT 5T Sensored Brushless Motor 4150KV (550 size) Turnigy TrackStar SCT 5T Sensored Brushless Motor 4150KV (550 size) The tekin prohd3500 looks nice but expensive. |
Re: Motor very hot - Tekin gen1 sensored Bombers are awesome for what they are - but trying to reach close to 40mph you're going to hate it. They don't handle well at those speeds - weren't designed for it. If you are insisting on going for some more speed you'll need a lot of suspension changes - lower it, springs & shock oils, adjustable sway bar(s) - and beef up the drivetrain - hardened steel gears and shafts. Try a 2 speed transmission to get that last bit of top-end. Find the gearing / speed calculator to get a better idea of just how fast you are really maxing out at now - that will give you more of an idea of how hard it is to reach those speeds. I'd keep those expectations more realistic and get a used Traxxas for the high-speed stuff - You'll still enjoy the Bomber more... try some more intense terrain, harder climbs, etc. |
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Yah your right. I used an online calculator and was getting 18.24mph with the 64/12 gearing. And with the 56/13 I have in it now, I am getting 24.85mph. I also stuck a GPS on the car and got 26.24mph. 40mph is too fast like you said. But 25 to 30 is what I'm looking for. I got 10wt oil and proline shocks, and a sway bar. It handles pretty good at 26mph for me and I can go slow with the sensored motor for some climbing but the problem is my motor can't handle this speed. Some people recommed these motors on this thread: Tekin prohd3500 3000kv 550 si,e Holmes hobbies puller pro 540 4300kv or Holmes hobbies puller pro 540xl 3500kv... this one looks nice I was looking at these. A little cheaper. I don't know if they would work. Hobbywing xerun 4274 2200kv 550 size Hobbywing xerun 3656 3400kv, 4000kv, or 4700kv My bomber weighs 8+ lbs with the 3s battery. Would the hobbywing 4274 give me speeds close to 30? It is a 550 size for heavier cars but the kV is only 2200. Then they have the 3656, which is only a 540 size but comes with 3 higher kV ratings. Higher kV 540 size motor or 550 size low kv for 25-30mph? Ive been reading some Info online and am still learning. |
Re: Motor very hot - Tekin gen1 sensored 2 Attachment(s) No wonder it gets hot, unless I've entered something wrong the calculator I use says it's trying to run more than 45mph!!!! Poor 2 pole obviously doesn't have the torque to get it there & is nearly burning itself up trying. R/C Calculations and you want it faster lol |
Re: Motor very hot - Tekin gen1 sensored Your calculation is off, total tranny/tcase reduction is 1.94, not 1.08. |
Re: Motor very hot - Tekin gen1 sensored Well that would explain something any way lol I looked up the trans ratio but obviously didn't take into account the reduction in the transfer . I wasn't quite believing that speed but didn't get the chance look up why. It took me a couple of goes at the calc when I first entered the 17t pinion he says in the first post, then realised it changes to a 13t later. A 550 3500kv on 3s with a 15t pinion will still only just tip 30mph, at least that should have the grunt to turn it. |
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