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biothundernxt replied to the thread Hello from Ukraine!.
"
Quote Originally Posted by kennystone View Post
With the tracks so far things are not very good, have to travel outside the country. Hope that things will change in the future
I would love to see some photos
That bike seems pretty great.

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biothundernxt replied to the thread Connecticut guy upgrading an E Boom Vader, E Grom..
" I looked into these a lot. I tried to buy one even with the intent of upgrading it, but the seller canceled my order.
I wasn't happy about that.
I ended up starting an XS750 conversion with a 12kw QS hub motor instead.

I can give you some of the information I gathered though.
Can you post a photo of the motor controller yours is using?
Some of them have it mounted on the side where the exhaust would go and others mount it under the fairings.
It would also be helpful to get some pictures of the text on the hub motor. I've seen a couple different ones used.

The leaf cells will have a hard time fitting.
I did measurements before, and they just won't fit well.

Any upgraded pack is going to need some fabrication done to make a metal box to hold the cells securely, or at least some sort of frame.
If you used LG chem cells you might be able to fit enough into the stock battery bay if you got creative.

You're going to need to get a BMS though. I would not skimp either. The ANT bms is a decent budget option. I would use the Orion 2 if money was not an object, but it cost more than the battery cells I used in my project.

"Zip" as you call it, is going to directly correlate to amps that your controller can provide/motor can handle.

The stock motor is okay, but if you upgrade to the 13" 3kw or 8kw hub from QS, you can push some serious power. Just make sure you get the "v3" or "v2" motor. The "v1" is their "economy" motor. AKA cheap, and not in the good way.

If you get it with a thermocouple inside and a controller with thermocouple input (like a Kelly KLS) you can also have the controller push out way more power than you could otherwise, and have it automatically dial back the power if the motor overheats so you don't cook it.

Kelly controllers have a bad reputation for burning up at random. I'm sure that they do indeed do this more than something like a sevcon controller, but I suspect that part of that is people pushing them right up to or beyond their rated power. Also keep in mind that the amp rating on kelly controllers is phase amps (or amps going to the motor) and not how many amps are being drawn from the battery. For example, my 600A rated kelly should only actually draw a max of 240-300A from my battery.
I haven't actually tested peak draw yet, but that's what the specs say.

I was not able to confirm if the 13" hub motor would just drop in, but if it had any issues they could probably be easily modified to make things fit. It's not a huge size difference.

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biothundernxt replied to the thread New Member, want to start a Kymco Spade Conversion..
"
Quote Originally Posted by caza View Post
That's fair, getting another swingarm isn't a big deal. It seems to me like QSmotor is the only real source for these types of hub motors, or am I missing something?
I have found http://www.evalbum.com/ to be a good reference for what other people have used. There are a lot of motorcycles on there and you can filter things to see what you're looking for.

QS is a good source, but if you want something made in the states, enertrac makes some hub motors.
https://www.enertrac.net/product.php
I'm not sure what they're doing right now amidst the pandemic, but other than that, despite their website looking super old and shady, they are pretty legit. If you look around on youtube you can find some videos of people using their motors.

They are more expensive than QS motor, but they're made in USA (I think... It's a US company anyway)
They also offer water cooling.
(QS does too but it's way too expensive)

Other than that, if you're looking purely for cost effectiveness, QS just released their 6kw continuous (10kw peak claimed) mid drive kits.
https://a.aliexpress.com/_mKPEYhT
Looks like just under 600 before shipping.

I'm not affiliated with them at all, and I can't vouch for anything they make at all except that my 12kw hub motor does indeed power up.
(And split my wood stand you can see in my video link in the forum when I twisted the throttle too quickly...)
I have not gotten to test anything under load yet.

So far I'm super happy with it but just don't think I'm some kind of QS motor expert.
I've just looked around at a lot of stuff.

For what it's worth, I do plan on doing another build after my current one, and I will most likely be moving to a mid-drive motor.

I don't regret getting the hub motor, but a mid drive let's you play around with different sprocket sizes and have more power in general.

Right now I'm considering an ME1616 my primary motor candidate for my next build. That's probably way overkill for your frame though.

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