200kv motor test

As an experiment i have attached and tested a pair of 200kv motors - so far so good.

 

1. Is the speed of the actual standing on the skateboard is the fastest? The operation is normal? 200KV motor lock point (fixed point) the same?
2. The motor is "Racerstar 5065 BRH5065 200KV 6-12S Brushless Motor Red Without Gear For Balancing Scooter"

 

Everything is exactly the same in terms of the motor size, design, connections, cables, fittings etc - attaches very easy and identical to look at.

Yes the one you reference is correct.

In use standing on the skateboard is definitely faster - fastest I have gone is 45kph, but there is still more trigger - I don't have the nerve yet to go faster.

They draw more current obviously with measured max of 20A each uphill, and cruising approx 5A each.

 

Will the modified 200kv motor, the whole high-speed taxi can run a few miles? There will be problems with the motherboard overheating or other dangerous failures may occur?

 

Will your wheel be a 97mm gear that is 32t? For 200kv followed by the original 150kv more accelerated strength and climbing strength has significantly reduced?

 

I use 97mm and 32T - I had concerns that the torque would be affected, 200kv will have less torque. But it is barely noticeable - fast and GT have more than enough and are very fast obviously. But Eco seems to be affected....but never really used that.

So far everything is within the specs for the motherboard, the motors are not drawing too much current to damage it. But it is an experiment and I have a spare motor controller just in case.

The range is affected but I still get 15km without issue....the voltage sag is worse if you try accelerating at 40kph uphill...(this may put the motor controller under stress too)..but if you drive sensibly the battery loss is manageable (I.e 30kph is less than half a trigger pull)

 

Yes Alex that's very true !!!

I did it once and do not plan to repeat it, 30-35 feel ok and 40 is the max anyone should go in my opinion and from experience.

I would discourage anyone going that fast ever and only did it myself as a test....and scared myself to be honest

 

I think the fastest speed of 200kv should be up and down at 53kph.
It is necessary to install an electronic temperature sensor to monitor the board temperature.

Is expected to be converted to the power line external battery, get longer sailing distance.

 

I'm about to do the same thing using 15-38T on 83mm wheels. So basically slightly faster than standard 97mm 15-32T. Just going to test whether a higher kV at a higher rpm would be more efficient than my current 20-32T setup. Was just wondering if the ESC could handle higher switching speeds of 60000 eRPM, but it seems to be doing fine with your tests.

 

Thats very interesting - I was originally considering the 38T myself - to allow for the theoretically reduced torque. (which would have also been worse on my 97's)

With your 38T and 83mm wheels it will be an insane speed machine with the 200kv - please let me know how you get on !!

 

i got the racestar 200KV Motors on my CGT for nearly 500km now without any Problems (mostly 97mm Abec Wheels)...Its a BEAST! BUT if i ride with AT Setup on High Grass in GT Mode Stuff will get pretty HOT!. No more drifting on High Grass

 

Nice! So no burning up esc's. Evolve really did use 270kV motors for their high speed prototype.

 

.my left 200kv racerstar motor just stops spinning after 1000km. i dunno if its a ESC or a Motor related problem. i let you guys know

 

That's unfortunate. I'd like to know what the issue is as well. I was ready to get a ESC replacement if it blew during testing. Unfortunately, Evolve-USA doesn't like selling individual parts...

On the bright side, I've finally installed my motors and been riding it for a week. So far initial impressions are good. Surprisingly I'm getting more torque than my previous setup for about the same speed of 28 mph max. As I've said before, all I changed were pulleys 20T back to 15T motor side and 32T to 38T wheel side. I haven't done a range test yet so that'll be for another time. Glad no one wanted to buy my 38T kit.

Now everything isn't all pink and roses, though. The accel and braking curve has changed dramatically, which is kind of expected as I doubt the ESC was tuned for 200kV motors, or maybe I just have to get used to a new setup. Initial startup is a little more punchy than I'd like even with fine control, and the brakes has a noticeable exponential curve. It's really weak up to 50% where it ramps up very quickly. So the infamous GT sensitivity just got more dangerous for the inexperienced. I definitely do not recommend, unless you are extremely comfortable with the GT as it is now. I do like to cruise and carve at 26 mph with trucks set very loose so there's that.
Also, I've started having drop-outs but only at one intersection on my commute that has never happened before, and it's pretty damn consistent. So there's some sort of interference going on...

 

Excuse me the size and specification of the Fixing screw in the 200kv motor gear

 

Exact same screws dimensions etc....what I have noticed is weaker breaking however. But I have got used to it now - and faster of course

 

Excuse me 200KV motor installed AT test run? Endurance, speed, overheating is how?

 

I just installed 200kv on my carbon gt. I seem to get a noise coming from the motor/gear it's a popping noise every full rotation not really sure what's going on. Took it for a test run the noise goes away going fast but as I slow it comes back. Everything seems ok riding the board only road for 2 miles, I'm not wanting to damage the board or I injure my self. Was wondering if anybody on here might have an idea as to what my issue is?

 

That sounds like a loose drive gear. Take a look at the gear while it's turning slowly. If it moves up and down on the shaft with each rotation that's your problem. From what you're describing that sounds like it.