BShady wrote:Really nice build!! I love the trampa boards from the start and the mounts look amazing.
Got a couple of qu:
Is your top speed of 30kmh measured on road or off-road.
How much does your board weight?
I though or outrunners the timing is suppose to be low not high?
Are you useing the 6s2p 5800mah for both motors or is that for each motor?
How many ESCs are you useing?
Lol that's a lot of qu!!!! Amazing build!! EMTB is the way to go!
I meassured it via Handy GPS on a gravel path. But that was one of the first test with only one motor.
Sorry no balance here i dont know, will tell you soon.
My knowledge is that this big outrunners used with high timing. Maybe some experts up in here can tell us the truth (-;
First runs i used lowest timing and if i hit the trigger hard the motors lost it sync(cogging), after setting max timing its much better, the driving is more direct. It felts the motors have 30% more power with full timing. The Temperature increase about 10 degrees.
I am using 6S2P with overall 11600mAh for both motors, runtime normally at least 30 minutes if you go hard on triggger.
I am using two Hobbywing 150A ESC connected via Y-Harness
Hope that helps
amberwolf wrote:As long as the metal isn't in the magnetic field it doesn't matter. it's only if it ends up there that it makes a difference, and even then only if it's moving within the field (or the field is moving past it). If you want to see, you could use an IR imager, and then run the unit for a while, and see what gets warm.
You could also use an IR thermometer, tha tjust tells you the temperature fo the spot you point it at, and carefully move it around to see what parts are at what temperatures.
If there is any warmth generated on the questioned areas, and they are not actively being warmed by hot air from teh motor, or radiated heat, then it would be induced heat by eddy currents.
You could also probalby measure the magnetic field strengths and see about how far it goes from the motor, and if it intersects the areas, but I dunno that would be worth the effort of figuring out how to do it and setting it up.
Basically any metal moving isnide a magnetic field will create a current within the metal. That's how a generator (or regen braking) works. The coils cut thru the magnet fields, and generate a current in the wire.
You can even take a powerful enough magnet, and move it around in circles on a piece of metal (aluminum, etc) and heat the metal up by the induced currents, but doing it by hand with the magnets you'd typically have laying around probably won't be that noticeable.
thx for elaborate answer. It make sense. Unfortunately i have no IR device at the moment, i lost it on weekend during riding the EMTB (-;
I need to buy a new one. To detect if there is a influence i will do the following:
I will do testruns of 10 minutes today with nearly equal terms and conditions. First one with the Rod, second one without, maybe a third one with the second Rod i milled last night. I´m really excited what will happen.
If i get it right my logic tells me that the amount of eddy current depends on the mass of the metal material in the magnetic field of the rotor?
So i could think about to machine the braces(rod) much lighter (-; isnt it ?
Better would be using more distance for the rods, but that means new motormounts...
But first i will test it like i described.
Have a nice day