Search found 56 matches

by Andrewol
Jun 06 2019 2:44am
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 336
Views: 30015

Re: GNG / CYC X1 Pro 3000w

Let us know how Nucular controller works with x1
by Andrewol
Jun 05 2019 6:42pm
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 336
Views: 30015

Re: GNG / CYC X1 Pro 3000w

no, 75600erpm 10800rpm at 72v.
Alan Hu spinned it to 14K rpm
by Andrewol
Jun 05 2019 4:23pm
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 336
Views: 30015

Re: GNG / CYC X1 Pro 3000w

150kV 7 pole pairs. Are you looking for a suitable controller?
by Andrewol
May 08 2019 1:22am
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 336
Views: 30015

Re: GNG X1-pro 3000w

5Ah for one cell or for battery? If one cell, 1.8kg weight with 14 cells result in 25kg or over 50lbs.
With 90 days warranty I would only take it for free).
by Andrewol
Mar 26 2019 12:59pm
Forum: Battery Technology
Topic: 18650 capacity loss test - garage vs basement vs fridge
Replies: 40
Views: 5228

Re: 18650 capacity loss test - garage vs basement vs fridge

You have a special frame made to fit battery pack nicely. As I see you welded the cells in the battery with wires? Or you just soldered wires to the cells? I bought sheets of soft rubber like silicone to wrap around a battery. To save space I'm thinking to buy or make some triangle bag instead of ma...
by Andrewol
Mar 26 2019 1:55am
Forum: Battery Technology
Topic: 18650 capacity loss test - garage vs basement vs fridge
Replies: 40
Views: 5228

Re: 18650 capacity loss test - garage vs basement vs fridge

With glued cells it can be difficult to replace some if required. I used honeycomb brackets. Did you spot weld the cells? Could you please show how did you place it in your ebike? Have you used some kind of buffering, as it should be more than 13kg of weight and bottom cells can be jammed on a rough...
by Andrewol
Mar 25 2019 11:46am
Forum: Battery Technology
Topic: 18650 capacity loss test - garage vs basement vs fridge
Replies: 40
Views: 5228

Re: 18650 capacity loss test - garage vs basement vs fridge

Offroader, where have you placed so many batteries in your ebike? Could you show how you did this?
I would like to put 273 cells in a triangle of my hardtail, but space is very tight, 1 cm left for case with some buffering.
by Andrewol
Mar 25 2019 6:29am
Forum: Battery Technology
Topic: What battery to choose after your last one burned your house.
Replies: 94
Views: 4065

Re: What battery to choose after your last one burned your house.

I'm not going to blast it in the can. It's for storage only, no all energy release in 1 second is expected
by Andrewol
Mar 25 2019 5:59am
Forum: Battery Technology
Topic: What battery to choose after your last one burned your house.
Replies: 94
Views: 4065

Re: What battery to choose after your last one burned your house.

Will aluminum can with 2mm thick sidewalls be fine for fireproof battery storage?
What bms 21S best options for diy we have? Preferably based on TI BQ76940, BQ76PL455A ICs
by Andrewol
Mar 25 2019 5:10am
Forum: Battery Technology
Topic: Nearly had a fire with 18650's, rubber-banded together
Replies: 7
Views: 423

Re: Nearly had a fire with 18650's, rubber-banded together

I don't understand what rubber band is all about?
You got a cell internal short circuit due to a fall and high impact. Conclusion: never fall your batteries to save your house.
by Andrewol
Mar 23 2019 1:39am
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 336
Views: 30015

Re: GNG X1-pro 3000w

Does anybody know how to implement battery temperature monitoring in this set, like it's done with motor temperature?
by Andrewol
Mar 12 2019 10:24am
Forum: E-Bike Non-hub Motor Drives
Topic: Direct-Drive conversion of the new GNG/cycmotor X1-pro 3000w
Replies: 96
Views: 7445

Re: Direct-Drive conversion of the new GNG/cycmotor X1-pro 3000w

Perhaps better would be to redesign the rotor for Cyc with magnets shells like in bbshd. I'm for the chain drive as well now.
Will wait for your test results Crossbreak.
Thanks.
by Andrewol
Mar 12 2019 8:24am
Forum: E-Bike Non-hub Motor Drives
Topic: Direct-Drive conversion of the new GNG/cycmotor X1-pro 3000w
Replies: 96
Views: 7445

Re: Direct-Drive conversion of the new GNG/cycmotor X1-pro 3000w

With 2K rpm on a motor spindle chain isn't an optimal solution here for best performance efficiency value, however most available. If the magnets will fly at that speed, than it's a warranty issue. Is there a space for carbon wrapping?
by Andrewol
Mar 12 2019 4:37am
Forum: E-Bike Non-hub Motor Drives
Topic: Direct-Drive conversion of the new GNG/cycmotor X1-pro 3000w
Replies: 96
Views: 7445

Re: Direct-Drive conversion of the new GNG/cycmotor X1-pro 3000w

You are right partially. That's why I wrote before about wind resistance. But with one reduction ratio half of throttle position (fixed phase amps) with given wind resistance and road condition you will have 30kmh. With another reduction ratio and the same other conditions you may have 35kmh. The di...
by Andrewol
Mar 12 2019 2:56am
Forum: E-Bike Non-hub Motor Drives
Topic: Direct-Drive conversion of the new GNG/cycmotor X1-pro 3000w
Replies: 96
Views: 7445

Re: Direct-Drive conversion of the new GNG/cycmotor X1-pro 3000w

So, the main reason it won't fit. I don't wish to discuss, but throttle has not much to do with efficiency of the system, this is just a speed lever for your ride. I think everyone agree. We need highest torque point with lowest phase amps ratio. As it will be fixed gear, efficiency must be taken in...
by Andrewol
Mar 11 2019 7:28pm
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 336
Views: 30015

Re: GNG X1-pro 3000w

Anyone who has Phase runner (upgraded Bac 800) which is only 50A max., will be able to compare it with stock 72V controller when CYC ships it out.