GNG / CYC X1 Pro 3000w

[Lenk42602]

Jon reached out today to confirm the specifics of my order before shipping.

Haven't received confirmation of shipping yet, but I think we should start seeing these units on bikes soon!

:thumb:

 

[n2mb]

What gearing is everyone choosing?
12/72 42t chainring
11/63T 38t chainring
11/53T 32t chainring

https://m.facebook.com/story.php?story_fbid=840589686287795&id=559486201064813&__tn__=-R

What would give best pedaling cadence?

Any ideas the diameter of the three options?

My bike currently has a race face 104x 34T, which is about 6" diameter. It looks like I could fit a 6.6" diameter chain ring. Would that be the 38t?

 

[anttipaa]

What would be best gearing for offroad? I dont need fast top speed. Im going with 14s controller. I can use max 38t chainring.

https://m.facebook.com/story.php?story_fbid=846612332352197&id=559486201064813&__tn__=%2As%2As-R

Is it 72t and 36t chainring on that bike? How would that work?

 

[Lenk42602]

SHIPPING INFO RECEIVED!

 

[Glennn]

Did anyone actually received their X1 pro yet?
Thoughts?

 

[Lenk42602]

Not yet here. This is my most recent update after being unable to use the tracking # provided:

Dear Len, 4/30/19

Not yet shipped, but will be shipped in these few days.
All hardware and controller and display are finished and prepared.
But the manufacturing version controller upgraded a mosfet and we are testing several new firmware which unlocks more power.
It's a fast firmware upgrade and we will ship your unit within this week. Thanks.

Im sure it will be a mere few days before we ride to glory!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



"

 

[fullofdays]

Just ordered the kit.

What battery packs are you guys planning on running?

 

[Bikegirl]

I'm looking at pairing this motor with a 14s lipo pack

What do you guys think of this one?

https://www.pulsebattery.com/plu45-500014-pulse-lipo-5000mah-51-8v-45c-stick-pack-version.html

 

[Andrewol]

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).

 

[Animalector]

That is 14S, 5000mAh, so 51.8V nominal. Enough to power the drive certainly, but I would want two of those sticks... at least.

 

[fullofdays]

No bms with lipo, correct?

 

[n2mb]

Just ordered the kit.

What battery packs are you guys planning on running?

https://lunacycle.com/luna-wolf-v2-52v-battery-pack/

 

[Bikegirl]

Has anyone here thought about a pack made of headway 38120 cells?

https://www.evworks.com.au/headway-38120-10ah-cell-lifepo4-cell-3.2v-10ah

Nominal 3.2v 10ah per cell 10C discharge.

Maybe a 16 or 17s 2p pack for around 52v 20ah pack?

Please correct me if I'm wrong, stillearning about different battery options.

 

[pyroladine]

Will this kit fit in BB with the same adapters that they sell for the BBSHD or only in a BSA BB? Specifically can I stick it on a 2019 Giant Reign 2 ?

 

[n2mb]

Has anyone here thought about a pack made of headway 38120 cells?

https://www.evworks.com.au/headway-38120-10ah-cell-lifepo4-cell-3.2v-10ah

Nominal 3.2v 10ah per cell 10C discharge.

Maybe a 16 or 17s 2p pack for around 52v 20ah pack?

Please correct me if I'm wrong, stillearning about different battery options.

Seems like great peak power, but very heavy for capacity, compared to li ion. 18650 Samsung 30q would be a great choice. Or Samsung 40t cells

 

[Bikegirl]

Seems like great peak power, but very heavy for capacity, compared to li ion. 18650 Samsung 30q would be a great choice. Or Samsung 40t cells

Thanks n2mb

How would the 21700 cells stack up against this? Seems like they should be easier to get soon as they hit production with Tesla.? Having 5ah per cell would be awesome.

 

[Tommm]

Seems like great peak power, but very heavy for capacity, compared to li ion. 18650 Samsung 30q would be a great choice. Or Samsung 40t cells
[/quote]

Thanks n2mb

How would the 21700 cells stack up against this? Seems like they should be easier to get soon as they hit production with Tesla.? Having 5ah per cell would be awesome.
[/quote]

You can aleady get 21700 cells, they aren't much better for wh/kg, but are useful if you are looking for specialist cells such as the 30t which doesn't have a popular and affordable 18650 equivalent. The 40t comes out to the exact same w/kg and wh/kg as the 30q.

 

[n2mb]

Samsung 40T is 205 wHr / kg
Samsung 30Q is 237 wHr / kg

40T is rated for 35A / 45A discharge
30Q is rated for 15A discharge (though 20A is probably ok for short bursts, if the temp of the battery is monitored)

Weight: 40T is 70g,
30Q is 48g

So, 45% more weight, but 233% more discharge current. Slightly lower capacity, though. I'd say the Samsung 40T is more similar to the Samsung 25S.

There are 21700 batteries that have more capacity, 5000 mAh, which is probably similar to what Tesla uses in the Model 3. But, they are only rated for 9.8A discharge. So, you'd need a lot of them in parallel (7p) for the X1 pro.

 

[Föppel]

Hey guys, just got my motors, ordered 2 chain kits and some more parts to try different combinations.



will build one bike with the motor in the frame, so i have to separate the controller from the sheets and mount it elsewhere, probably under the downtube, near the BB.



controller looks nice and is pretty small, its the 48-52Volt version.



motor fits nice in this Specialized Epic Elite-frame, i tought that it would have some kind of flex, but it feels rock solid for now


there would be enough space in the frame to mount a EM3-Supershark, but i try to keep the bike as light as possible, so i think i will go for the backpack-style again... but not sure, since it would be a such a nice fit.



we will use the new HG2-Cells from Em3ev for both bikes. Im very happy with the 14S4p and 14S5p-packs with those cells. not sure about the specs, but feels more powerfull than the Samsung 30Q and 25R-packs (?).

Think i will limti the power to something a bit over 2kw, as the bike is not the strongest (ca. 12Kg)

 

[Tommm]

Samsung 40T is 205 wHr / kg
Samsung 30Q is 237 wHr / kg

40T is rated for 35A / 45A discharge
30Q is rated for 15A discharge (though 20A is probably ok for short bursts, if the temp of the battery is monitored)

Weight: 40T is 70g,
30Q is 48g

So, 45% more weight, but 233% more discharge current. Slightly lower capacity, though. I'd say the Samsung 40T is more similar to the Samsung 25S.

There are 21700 batteries that have more capacity, 5000 mAh, which is probably similar to what Tesla uses in the Model 3. But, they are only rated for 9.8A discharge. So, you'd need a lot of them in parallel (7p) for the X1 pro.

I think you got the 35/45 mixed up with the 30t. The 40t will blow up if you do 45a.
https://www.e-cigarette-forum.com/attachments/d6de5246-3d58-426f-9c9e-bb86eef69e12-jpeg.757603/
It is 25a/32a temp limited, the same way 30q is 15a/20a. So a bit more than 50% extra discharge for 50% extra weight, and less than 50% extra capacity. At 30a it sags a bit less than the 30q at 20a but gets hotter.

 

[n2mb]

Nope, it's listed as 35a / 45a in the Samsung datasheet.

https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.vapcelltech.com/uploads/file1/20180614/5b223d66be21d.pdf&ved=2ahUKEwjQ3K2Yyo_iAhUDLK0KHZX8C2IQFjAAegQIBRAB&usg=AOvVaw0YOWK5E7i5jk0LzXnixeBK

 

[Tommm]

Nope, it's listed as 35a / 45a in the Samsung datasheet.

https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.vapcelltech.com/uploads/file1/20180614/5b223d66be21d.pdf&ved=2ahUKEwjQ3K2Yyo_iAhUDLK0KHZX8C2IQFjAAegQIBRAB&usg=AOvVaw0YOWK5E7i5jk0LzXnixeBK

Yes, and looking at this picture with brutal sag at 40a and 96c without being crammed in a pack, everyone can decide how much they want to risk. :lol:
https://www.e-cigarette-forum.com/attachments/d6de5246-3d58-426f-9c9e-bb86eef69e12-jpeg.757603/

 

[Grantmac]

Foppel:

Do you think the short motor mount will work with a chain primary or just the gear setup?

-Grant

 

[n2mb]

Nope, it's listed as 35a / 45a in the Samsung datasheet.

https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.vapcelltech.com/uploads/file1/20180614/5b223d66be21d.pdf&ved=2ahUKEwjQ3K2Yyo_iAhUDLK0KHZX8C2IQFjAAegQIBRAB&usg=AOvVaw0YOWK5E7i5jk0LzXnixeBK

Yes, and looking at this picture with brutal sag at 40a and 96c without being crammed in a pack, everyone can decide how much they want to risk. :lol:
https://www.e-cigarette-forum.com/attachments/d6de5246-3d58-426f-9c9e-bb86eef69e12-jpeg.757603/

True. Is it possible his setup had too much resistance or didn't do four terminal measurements correctly?

I just wonder how the Samsung spec would be so far off.

 

[Tommm]

True. Is it possible his setup had too much resistance or didn't do four terminal measurements correctly?

I just wonder how the Samsung spec would be so far off.

Such a big advancement would be unlikely from just a format change with same chemistry. I guess the spec sheet was for an aspirational one for a prototype. These things are leaked onto the net anyway, and when any one sheet starts to get passed around even if the final one does come out it will not spread. The 30t spec sheet just shows 35A and is a way stronger cell.