Good morning and congratulations for the nice hand made project!damirsky wrote: ↑Sep 21, 2018 9:54 pmthank you guys for very kind words.
i bought my cells few years ago from russia. it was announced that the capacity is 35ah, rated current is 170-180a, max current is 350a. as i mentioned the seller beleives they made for nissan leaf by aesc. if you look at leaf's cells these cells look pretty similar.
nissan leaf cells:
in my opinoin my cells are lipo made in china. if they die i can try to buy used nissan leaf cells.
thank you.icherouveim wrote: ↑Sep 22, 2018 12:47 amGood morning and congratulations for the nice hand made project!
Do you have a pic from the battery tabs to see how exactly they connect to each other ?
I like pouch cells, If they are good quality it's always a better and simpler solution compare to 18650 cells (less sag voltage, more reliable, brutal acceleration, longer cycle life).
I have made two battery packs with Westart cells and they are still work fine after lot of abuse and cycles. I don't have to sacrifice capacity by not fully charge them every time. 3V to 4.2V
The only penalty is the additional weight and size so they are suitable only for big frames likes yours.
What the final weight will be ? 120 kilos ?
i was looking at them and the denzel motors either. i finally plan to order qs motor because of their well known reputation, i red some feedbacks from russian guys who have experience with qsmotor 3000w mid. finally qsmotor factory store at aliexpress have pretty attractive offer - i can buy motor+foc controller+delivery for about $500.macribs wrote: ↑Sep 24, 2018 11:34 amWhat about looking at the sur ron motor? It spins faster but it got a build in reduction in the motor housing. I wrote about it here, and there are links to read more about it. Motor comes in various versions, including a dual motor, and can even be paired with a controller. Don't know the price but as cheap as Sur Ron bike's are maybe the parts are low priced as well? viewtopic.php?f=30&t=91144&p=1413388#p1412910
yes, you are right. the metal near the rotor is not a good idea. i'm gonna work on this.spinningmagnets wrote: ↑Sep 25, 2018 3:32 pmI am no motor expert, but I think there is a chance that you may need a little more airspace between the spinning shell of the outrunner and the metal parts in the frame. It would not take much to ensure there are no eddy-current issues.
These outrunners are typically using a thin section of "back iron" as the steel shell, in order to save weight, since their main customers for RC models are sensitive to grams of weight between one motor and the next.
I am surprised that they still carry any motor model with 0.50mm thick laminations. The extra cost to use the thinner 0.35mm is very minimal, and quite affordable.