Search found 12 matches

by Sparky123
Jan 02 2022 12:23pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

In addition to making a list of what the bike will do, you should also make a list of the build constraints, if you already have a frame picked out, like the one from your other thread. Specifically you want to make sure you have the clearance and the right dropout width, since that can impose some ...
by Sparky123
Jan 02 2022 8:36am
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

I recommend that you make a detailed list of exactly what you want the bike to do for you, under the specific conditions you need it to do those things. Then go to http://ebikes.ca/tools/simulator.html and read the entire page to learn how it works and what it does for you. Then use the simulator t...
by Sparky123
Jan 01 2022 7:15pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

Why you say it should be 5T before even knowing which motor you want?? Regarding qs273 and escpecially qs205, I guess for a 5T the winding resistance and inductance will be too high to push 26kw through it at 72V. To push more power through it you need higher voltage or less turns. QS273 is below $...
by Sparky123
Jan 01 2022 5:51pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

Why you say it should be 5T before even knowing which motor you want?? Regarding qs273 and escpecially qs205, I guess for a 5T the winding resistance and inductance will be too high to push 26kw through it at 72V. To push more power through it you need higher voltage or less turns. QS273 is below $...
by Sparky123
Jan 01 2022 3:48pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

The battery output will be 26kw. I didn’t know that the number of turns affected the motor power, surely even with only 72v with a 5T motor there is a certain rpm where it will make 26kw which would be at low speeds, right? I have seen videos of people doing something very similar and it worked out...
by Sparky123
Jan 01 2022 3:39pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

So where do you find a QS273 for less than $500?
[/quote]
You’re right, I will probably have to spend upwards of $900 but it’s not what I originally planned
by Sparky123
Jan 01 2022 3:37pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

Are you talking about 26kw motor output or motor input power? If you want to run it only at 72V, 26kw output is probably impossible with a qs205 or qs273 without rewinding the motor with less turns. For 26kw motor input power at 72V, a QS205 or QS273 with 3T winding could be enough. Both motors wil...
by Sparky123
Jan 01 2022 2:54pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

I know that a 26Kw rated motor is overkill so what power rating should be sufficient Sufficient for what? I want the smallest and lightest motor that won’t overheat or melt at 26Kw QS273 Sent from my POCO F2 Pro using Tapatalk Yeah, that’s what I’ve been looking at, it seems like it can easily hand...
by Sparky123
Jan 01 2022 2:39pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

E-HP wrote:
Jan 01 2022 2:27pm
Sparky123 wrote:
Jan 01 2022 2:23pm
I know that a 26Kw rated motor is overkill so what power rating should be sufficient
Sufficient for what?
I want the smallest and lightest motor that won’t overheat or melt at 26Kw
by Sparky123
Jan 01 2022 2:38pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

Re: What motor do I need for 26Kw?

brazilianboy wrote:
Jan 01 2022 2:25pm
Hub motor or mid-drive?

Sent from my POCO F2 Pro using Tapatalk
Hub motor
by Sparky123
Jan 01 2022 2:23pm
Forum: EBike Technical
Topic: What motor do I need for 26Kw?
Replies: 24
Views: 549

What motor do I need for 26Kw?

I’m building a 26Kw ebike that run off of about 360 battery amps at 72v. I need to buy a hub motor but I don’t know what one will be suitable. Im looking for a 5T motor and I don’t want to spend over $500. I know that a 26Kw rated motor is overkill so what power rating should be sufficient, I don’t ...
by Sparky123
Dec 31 2021 10:47pm
Forum: EBike Technical
Topic: Wondering if I can fit these batteries
Replies: 0
Views: 422

Wondering if I can fit these batteries

I have one of those full steel enduro ebike/ bomber clone frames as shown in the picture. I want to fit a massive battery into it, composed of ~420 18650 cells (Samsung 30q). I want to put the batteries end to end in the frame (width ways). It’s a tight fit but allows me to fit largest battery possi...