Thank you everyone who shared some of your knowledge to assist me. Considering your position on high motor kv, I have selected others to hear what you have to say about them:
Ollin Board OM5065-200kv 2200W - 84,00
Ollin Board Shipping - USD 60,00 (seriously? )
SK3 6374 192kv 2750W - USD 79,96
SK3 5065 236kv 1850W - USD 60,71
NTM 5060 270KV 2400W - USD 45,44
Hobbyking shipping - USD 30,00
Torque Boards Motor 5055 280KV 1750W - USD 70,00
Torque Boards Motor 6374 190KV 3150W - USD 120,00
Torque Boards Motor 6355 190KV 2500W - USD 90,00
DIY Skateboard shipping - USD 40,00 (also expensive shipping)
I’ve seen lots of people using SK3 motors. Ollin Board seems a very nice alternative, however their shipping price… No comments on that!
From my point of view the SK3 of 79,96 (total 110 with shipping) seems a viable option with good relation in terms of performance and cost.
Here are my replies to your considerations:
@Michaelinvegas I didn’t go 10S because more cells in series means more volts, that would translate into more rotations per volt (kv) and too high max speed. 8S5P are 40 cells in total and 100A max discharge, which would satisfy the motor. With a lower KV motor, there will be less current consumption (maybe 60 or 80 max), thus I can make it 10S4P, which are still 40 cells. In short, I will use lower KV motor and make a 10S battery with the same 40 cells.
That’s exactly what I tried to achieve. I thought that maybe, more KV with adjusted gearing would improve torque significantly. But I’ll definitely see to your advice of getting a lower kv motor running higher voltage. I’ll check on your video on NTM later at home. Thanks for the advice!
@Jinra Thanks for the advice, benchwheel it is then!
This motor really looks great, however the shipping Ollinboard is charging me is way too much!
@saul I’ll change the motor, this way I can go 13T+ without fearing too high top speed. Is there a reason why you recommend 90/97mm wheels over the 80/83mm? As you mentioned wheels, what about Wheel Durometer? 78a, 80a?
@Mobutusan Thank you for this information. I used the calculator to keep max speed under 48km/h, however I did not know about VESC max ERPM limit.
@bigpianist That’s exactly what I was trying to achieve with this build - torque and hill climbing. But as this is my first build, it’s wise to listen what most experienced builders are saying. This time I will get lower kv motor, but on my next one I will attempt what you have done, and compare the results in terms of cost x efficiency.
One again thank you for sharing your insights.