Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

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MJSfoto1956   10 kW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by MJSfoto1956 » Feb 17 2019 9:41am

madin88 wrote:
Feb 14 2019 5:43am
... on BMS with common charge and discharge port, the discharge current has to flow through two banks of Mosfet's, whereas on BMS with separte ports for controller (P-) and charger (C-), the discharge current just has to flow through one bank. This means they can reduce the number of Mosfet's on the bank for the charge port which would explain the lower price.

common port:
pros: usually identical max allowed charge and discharge currents, protection against overcharge from regen (or charge via controller)
cons: more heat at given discharge current

separte port:
pros: less heat a given discharge current
cons: usually lower max allowed charge current, no protection against overcharge from regen
Thanks for the succinct explanation!

M

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by hgclobo » Feb 19 2019 12:52pm

So, last week I got my frame kit and today I just got the 200A SPIM08HP packs, I test fitted them and even though I pre measured everything before buying the batts I was still a bit nervous they weren't going to fit but check the pictures out, im glad to get them in with space to spare for the BMS, of course its no 36Ah pack, its only 8Ah but I think its going to be a super fast build, I can now take my time sourcing and building a 240 cells 30Q pack.

Next step is to paint my frame and rims before starting the build, pictures when done...
IMG-6793.JPG
IMG-6915.JPG
IMG-6916.JPG

TheBMallory   10 W

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by TheBMallory » Feb 23 2019 1:52pm

Started building the parallel packs (have not put them in series yet) :

Image

I'll probably have to double every nickel strip, especially those in series. Kweld works great btw

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MJSfoto1956   10 kW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by MJSfoto1956 » Feb 23 2019 4:27pm

madin88 wrote:
Feb 14 2019 5:43am
common port:
pros: usually identical max allowed charge and discharge currents, protection against overcharge from regen (or charge via controller)
cons: more heat at given discharge current

separarte port:
pros: less heat a given discharge current
cons: usually lower max allowed charge current, no protection against overcharge from regen
This may seem like an odd question but it is important for my particular use-case:
  • Can you discharge (i.e. power some load) while charging with a "common port" type of BMS?
(I'm 99% certain you can with a "separate port" type)

Michael

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by L3chef » Mar 02 2019 6:25am

TheBMallory wrote:
Feb 23 2019 1:52pm
Started building
Any updates on the battery pack build?

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by TheBMallory » Mar 03 2019 8:36am

Not really, I can only work on it a few hours during weekends and I'm waiting for the BMS to be delivered.

Here's a pic :
Image
This side is finished since then. I still have to do the other side.
I doubled every series connection.
I purposely left some space on the top right corner in order to have some space to fit some electronics, maybe the BMS if it fits.

That is a LOT of spot welding. I'm glad I got a proper tool

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Rix   100 GW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Rix » Mar 03 2019 5:27pm

Battery looks great.

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hgclobo   10 mW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by hgclobo » Mar 04 2019 2:29pm

Paint (lime green plastidip), statorade and hubsink done.
Next step is to lace the wheels, pictures when done...
IMG_6990.jpg
1st green coat
IMG_6997.jpg
4th and last green coat
IMG_6993.jpg
just hanging
IMG_6999.jpg
26in and 19in rims
IMG_7014.jpg
finished, 4 gray coats and 4 green coats
IMG_7005.jpg
statorade
IMG_7011.jpg
hubsinks
hgclobo wrote:
Feb 19 2019 12:52pm
So, last week I got my frame kit and today I just got the 200A SPIM08HP packs, I test fitted them and even though I pre measured everything before buying the batts I was still a bit nervous they weren't going to fit but check the pictures out, im glad to get them in with space to spare for the BMS, of course its no 36Ah pack, its only 8Ah but I think its going to be a super fast build, I can now take my time sourcing and building a 240 cells 30Q pack.

Next step is to paint my frame and rims before starting the build, pictures when done...

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Rix   100 GW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Rix » Mar 04 2019 3:47pm

Going to be sweet!!!!

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Merlin   1 MW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Merlin » Mar 08 2019 9:23pm

hubsinks allready installed?
you cant lace a wheel now :D

spraypainted the frame and rims? mhhh....powdercoat will last wayyyy longer.

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by hgclobo » Mar 08 2019 11:03pm

Damn, didn’t think the sink was going to be an issue with the lacing, no biggie, I’ll remove it, lace it and place it again.

And about the paint, well plastidip is not meant to be permanent, just a super easy way to paint over what you already got and super easy to remove and repair, under tge plastidip I still have the original black/white powdercoat.

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Merlin   1 MW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Merlin » Mar 09 2019 4:21am

Was too late for me. Missed that you are using dip.
I like dip but have no experience. But lacing a wheel with spokes I wonder if it will last without scratches.

Let me know how it ends + pics. =)

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by TheBMallory » Mar 16 2019 2:28pm

Battery almost finished, can someone please tell me I didn't screw up cable management for the BMS ? It was really a pain... I now have high and low spots and I intend to use the same solution as Offroader

Image

Image

I have yet to solder the power cables and I'll shrink wrap everything

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Offroader   10 MW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Offroader » Mar 16 2019 5:00pm

You have to check the voltages of the wires to make sure the BMS wires are correct. They should rise about 4 volts each successive wire or how much your voltage is.

Why do you mean high and low spots?

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by TheBMallory » Mar 17 2019 2:07am

Yes voltage is correct. By high and low spots I mean that the sides are not completely flat anymore and vibrations could make some cables rub against each other. I saw you put some foam in some places in order to prevent that

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by TheBMallory » Mar 17 2019 6:27am

Test fit.
Image

Putting the BMS inside is going to be fun, although there's room.

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Rix   100 GW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Rix » Mar 17 2019 9:56am

TheBMallory wrote:
Mar 17 2019 6:27am
Test fit.
Image

Putting the BMS inside is going to be fun, although there's room.
Very nice Mallory, call your build "offroader II" thats a lot of battery. I like it.

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by TheBMallory » Mar 30 2019 11:13am

Update! Starting to look like a bike

Image

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Offroader   10 MW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Offroader » Mar 30 2019 3:36pm

I don't believe I gave an update after installing my BMS.

Adaptto BMS hard wired into battery pack with 28 AWG wire.
Image

BMS wire coming out the sides of the battery pack
Image

Battery first wrapped with Kapton tape to not leave any residue. Then some electrical tape over some wires for extra wear resistance. Then multiple layers of packaging tape to hold everything tightly together.
Image

Battery inserted, battery wires still need to be run to controller through frame.
Image

Closed cell foam all around battery pack. The battery pack had to be forced into the battery compartment.
Image


Image

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by TheBMallory » Mar 30 2019 3:40pm

Mesh wire for the BMS wires is a nice idea that I'm going to steal

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Offroader » Mar 30 2019 3:44pm

Where the battery sits against the back of the frame, I had no room to insert any foam. I therefore squeezed in hot glue sticks to relieve pressure on those few cells pushed up against the metal frame.

Image

I cut pieces of small stick on foam and inserted them in various places to secure the battery. The side covers will make contact with this foam.
In the past I used foam sheets but they would force the side covers to press into the wires on the sides of the pack. I also believe the foam on the sides prevented heat from escaping the battery. The foam pieces were placed where there were no wires.

You can also see the hot glue sticks I inserted to relieve pressure on the few cells at the rear of the pack. I had to do this because I had no room to insert any foam as the pack took up all available space.


Side covers will make contact with the foam and not the wires on the sides of the battery. Foam is placed where there are no wires.
Image

Image


If you look closely you can see how some of the wire insulation split, you will see silver showing through. This may be because of the side covers pressing up against the wire. If the blue wire insulation failed it would short against the black wire below it in that location. This is why I reinforced my pack with electrical tape over these locations and also used foam pieces so the side covers would press against foam and cells without pressing against wires.

Image

Orange wire insulation split open.
Image
Last edited by Offroader on Mar 30 2019 4:06pm, edited 1 time in total.

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Offroader   10 MW

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Offroader » Mar 30 2019 3:45pm

TheBMallory wrote:
Mar 30 2019 3:40pm
Mesh wire for the BMS wires is a nice idea that I'm going to steal
Yeah that stuff worked well, just use a lighter to seal the ends after cutting.

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Offroader » Mar 30 2019 3:53pm

In the past I used these thin foam sheets. I used 3 layers of them. The issue with them is that they will insulate the battery and also push against the wires on the sides of the pack, if the wires happen to be a high point. This may have caused some of my wire insulation to be cut open.

I wouldn't use the following method to secure the pack, especially if you have wires on the sides of the pack. Cut small pieces of foam insulation and stick them where the wires are not, like I did above.

Maybe you have a better way to secure the battery on the sides.

This is what I did a couple of years back when first installing my pack:
Image

Image

Image

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by Offroader » Mar 30 2019 3:59pm

I liked the idea to use clear packaging tape because its cheap and extremely strong. I wrapped multiple layers of this around the pack . It will help secure everything, especially all the wires run on the sides of the pack, and offer wear resistance.

Image

Image

Image

Image

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Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

Post by TheBMallory » Mar 30 2019 4:38pm

I tried big ass shrink wrap with mine and couldn't make it perfectly flat without wrinkles. I use this to pack mine : https://www.amazon.fr/gp/aw/d/B00I77R9C ... b_pd_title

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