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06-13-2019, 06:05 AM | #1 |
Newbie Join Date: Aug 2018 Location: In a galaxy far, far away....
Posts: 6
| Hobbywing AXE 550 System
I want to buy the new AXE set with the 550 engine for my TRX-4 sport. What should I go for, 3300kv or 2700kv? The car is only used for crawling.
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06-13-2019, 06:28 AM | #2 |
Newbie Join Date: Sep 2017 Location: Canada
Posts: 48
| Re: Hobbywing AXE 550 System
I'd do the 540 and 1800 kv myself. I have it in one of my trx's. If your only crawling it's more then enough. Sent from my SM-G955W using Tapatalk |
06-13-2019, 06:38 AM | #3 |
I wanna be Dave Join Date: Jan 2005 Location: Raleigh-ish vicinity
Posts: 3,846
| Re: Hobbywing AXE 550 System
It is really a matter of personal preference based on driving style. How do you like the amount of wheel speed and generally feel of the stock motor? From there, you can have something: #1 A little faster than stock = 2700kv, no other changes #2 Much faster than stock = 3300kv, no other changes #3 Slower than stock with more torque and control = 2700kv geared down #4 About as fast as stock with more torque and control = 3300kv geared down |
06-13-2019, 09:36 AM | #4 |
I wanna be Dave Join Date: Feb 2017 Location: My mothers basement
Posts: 2,128
| Re: Hobbywing AXE 550 System
Since brushless motors don't lose torque with higher kv iterations like brushed motors and the axe motors are kinda low torque already, I would get the 3300kv and a 9t pinion and 45t spur and run it on 3s. Sent from my SM-N950U using Tapatalk |
06-13-2019, 11:52 AM | #5 | |
Newbie Join Date: Aug 2018 Location: In a galaxy far, far away....
Posts: 6
| Re: Hobbywing AXE 550 System Quote:
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06-13-2019, 01:41 PM | #6 |
I wanna be Dave Join Date: Feb 2017 Location: My mothers basement
Posts: 2,128
| Re: Hobbywing AXE 550 System
They made it a 5mm rotor?! That's completely unnecessary but anyway go with the robinson racing 11t pinions. Or mill the end of the rotor down to 1/8, that's probably what I would do, since I doubt there is enough power to twist the shaft if they used any sort of quality metal. Sent from my SM-N950U using Tapatalk |
06-13-2019, 02:36 PM | #7 |
Newbie Join Date: Sep 2017 Location: Canada
Posts: 48
| Re: Hobbywing AXE 550 System
I still say there is no reason to go to a 550 can in a trx for just crawling...lol...get the 540 axe. Sent from my SM-G955W using Tapatalk |
06-13-2019, 04:25 PM | #8 | |
RCC Addict Join Date: Jun 2016 Location: Germany
Posts: 1,364
| Re: Hobbywing AXE 550 System Quote:
why mill the rotor down there are enough 32p 5mm options on the market (stupid idea in my eyes) | |
06-13-2019, 08:09 PM | #9 | |
I wanna be Dave Join Date: Feb 2017 Location: My mothers basement
Posts: 2,128
| Re: Hobbywing AXE 550 System Quote:
Sent from my SM-N950U using Tapatalk | |
06-14-2019, 10:04 AM | #10 |
RCC Addict Join Date: Jun 2016 Location: Germany
Posts: 1,364
| Re: Hobbywing AXE 550 System
Why shouldn't it lineup? Here's one from HR https://www.monsterhopups.de/Hot-Rac...itzel-5mm-Bore Gesendet von meinem Pixel 2 XL mit Tapatalk |
06-14-2019, 10:40 AM | #11 |
I wanna be Dave Join Date: Feb 2017 Location: My mothers basement
Posts: 2,128
| Re: Hobbywing AXE 550 System
Because the teeth on that one are out past the end of the motor shaft. For that pinion to work on a trx4 you would need to cut the shaft shorter or press the shaft out the back of the rotor some (which might break it). If you don't that fat area with the set screw is going to contact the spur instead of the teeth. Which is also an option, just not one I would use because I'm not expecting the hr gears to be as good as other 1/8" options. It's not that difficult to sand down the shaft, just turn on the motor and slowly grind it down with a stone or sand paper watching out for heat. Measure often. Sent from my SM-N950U using Tapatalk |
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