Search found 113 matches

by owhite
Aug 20 2020 1:16pm
Forum: EBike Technical
Topic: Feedback for ebike battery build: 20s 40ah lithium polymer pouch
Replies: 9
Views: 495

Feedback for ebike battery build: 20s 40ah lithium polymer pouch

High Capacity Li-ion Battery 3.7v 40ah Li Polymer Battery Battery Type: Li-polymer Nominal Capacity: 40Ah Nominal Voltage: 3.7v Dimension: 8x104x345mm Weight: 650gm Internal Resistance: ~1mohms Discharge rate: 5C 200A Max discharge rate: 8C 320A Cost: $40 USD Does anyone have an opinion about the do...
by owhite
Aug 20 2020 7:48am
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

So I'm starting to see the beauty of graphene cells. I made a spreadsheet of some configurations. https://i.imgur.com/YJq0czq.png Yours is the top row. I was interested in if instead of going with 3p I did 2p. That's the second row. It seems like the penalty would simply be less distance even though...
by owhite
Aug 19 2020 10:02pm
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

Okay i'm getting it now.

That's 30lbs of battery, and THREE HUNDRED AND SIXTY continuous amps.

Head officially exploded.
by owhite
Aug 19 2020 10:48am
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

break out the popcorn. :-)
by owhite
Aug 19 2020 10:43am
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

That's really amazing. So it seems like the main downside of using your packs is the mAh - my config should give me with 20s10p should give me about 20Ah, and in your case it would be 8. I calculated that 'aggressive' bike operation (30 watt-hours), my 20s10p should let me travel about 60 miles whic...
by owhite
Aug 18 2020 8:01pm
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

Wow. That's awesome! Four, 4 x 6S packs, connected in series. That puts the weight distribution all around your bike.

That's genius. :idea: :idea: :idea:

All this time I was think of using 18650s.

Could you shout out a link to an example battery pack?
by owhite
Aug 18 2020 5:34pm
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

I love that video so much. That frame is sweet. I was wondering - is it hard to get forks to match a frame? Are they getting standardized somehow? And I cant for the life of me imagine where the battery pack would go. In my case I kind of dont want my bike to look like a high performance machine. I ...
by owhite
Aug 18 2020 11:40am
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

aw thanks. I should probably insert an atom bomb gif here for possible outcomes.

Right now I'm hoping to get a little more feedback on my build and then will get started on battery-pack construction. :thumb:
by owhite
Aug 18 2020 10:57am
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

:shock:
sorry am i missing something?
Bad calculations?
Simon Cowell syndrome?
MadRhino doesnt think?
by owhite
Aug 18 2020 9:23am
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

Well this is incredible news. Can I reality check my build with you? The bike frame is a rattan fat bear: https://www.rattanebike.com/products/rattan-fat-bike It's 60lbs with stock motor and battery, I can still only guess but my motor / battery config will be an additional 50lbs. Hearing all this I...
by owhite
Aug 18 2020 6:56am
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

That is incredible news. Can I just to confirm to be sure before I cook this thing - yours is also labeled "WP30039X"?

and thank you!
by owhite
Aug 17 2020 9:04pm
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Re: Identifying a motor: WP30039X

More information. According to the QS motor website: http://www.cnqsmotor.com/en/article_list_153.html They give information about the markings of their QS 205s: QS Motor Steel Seal We could laser print it on side cover or edge of side cover. For V3 type motors(e.g. WP20040X140607 7355) WP= V3 type ...
by owhite
Aug 17 2020 6:05pm
Forum: EBike General Discussion
Topic: Identifying a motor: WP30039X
Replies: 33
Views: 1336

Identifying a motor: WP30039X

Hello folks, I recently purchased a conversion kit that came with a motor with this marking: WP30039X. I have found a couple of bits of information from the googles. On amazon I got one hit [ https://www.amazon.ca/5000W-Highest-Torque-Windings-Motor/dp/B06Y5NLD1L ] That has my motor, but it also has...