Summerboard SBX V1 reviews, discussion, mods, deals, problems, mostly problems. Maintenance/upgrade guides.

Ok good point :sweat_smile: thanx! Better double check that I setup the correct restrictions then.

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Well actually I forgot the SBX uses like ~190KV motors pretty sure.
So see here if you tried to max out the Stormcore at 18S or like 75V


Red arrow points to possibly dangerous number, almost 90K ERPM is a lot of trust to have.

honestly from looking at these guesswork numbers I think the sbx has higher than 190KV motors. Surely less than 220KV tho.

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Early SBX models did not have the slot to remove the motor I want to say… but maybe it was always covered by the belt cover so I did not see. someone can confirm.

A little while back I asked Aaron for the Summerboard source code since it is a derivative of VESC which is released under a GPL. It took @trampa to call Aaron out on this, but to Aaron’s credit I was sent a Google Drive link with these files.

@Fosterqc You asked about traction control a while back, there’s no code in here pertaining to traction control that I can see.

This drop forks from BLDC/3.59 and dates back to Sept 2019.

I suspect that this might have been the last code drop that was done by a 3rd party design house and changes after that were either brought in house or moved to whoever Summerboard currently has doing their engineering.

I was trying to merge all of the SBX changes into the current BLDC mainline, but there’s been a lot of changes since the fork and I haven’t figured out a way to cleanly do this.

Lately I’ve just been riding stock Summerboard FW, but I’m sure at some point I’ll get back to trying to complete this merge.

One interesting tidbit is that there’s already support in this FW to flash the BMS.
Requiring people physically send back their battery for ā€œrepairā€ is BS and it should be feasible to unbrick batteries with just a software update.

Aaron’s response to this was ā€œthis is an incredibly complex solution that would only benefit a tiny fraction our our customers, and we are working on new products and solutions to benefit all customers.ā€
Which of course is to sell us a $600 V2 motherboard/battery replacement.

These gas gauge files are for TI’s bqStudio.

bldc-master.zip (7.1 MB)
Copy of SB1GoldenImage_V1.1.gg.csv (53.8 KB)
Copy of SBXGoldenImage_V2.0_Beta.gg.csv (53.8 KB)
isolator_pcb-master.zip (6.5 KB)

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Thanks a lot for pushing this along. Let us know however we can help!


I updated the top/first post to be more helpful also.

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Worth a read if you liked @jchum 's post
https://www.reddit.com/r/summerboard/comments/1502v43/bms_fw_unbrick_vesc_merge/

For some reason, I am wondering if there is any fine print you agree to when you buy the SBX V2 electronics that SB is not liable for your injury if you install it wrong. That is absolutely not my field.

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I was charging my battery yesterday waiting for the LED to turn white to indicate fully charged.
When I came back to check on it the battery LED was off, the board wouldn’t turn on by pressing the power button and the LED on the charging brick was out.

Just by charging the motherboard with the OEM charger, it blew up the motherboard.

This was the exact same issue that @Fosterqc had on the board he sent me for reverse engineering, the reverse protection/transient voltage suppression diode across the battery supply blew and fused short. I’m super lucky that it didn’t generate yet another battery fault.

Check the 3x TVS diodes if your supply to ground measures as a short.

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So someone on Reddit just gave me their Summerboard for parts and so I could ride it, as I’ve been waiting like 6mo for my parts from support (after paying). I heard some cracking while moving the caster around and noticed a crack on his sbx base housing as shown below. This is the exact same way my casters broke on my Summerboard all those months ago, and I’m wondering why they are so faulty, or if it’s just my experience. There seems to be only a few pressure points on the bottom of the housing where the bearing puts a lot of pressure on, and logically this seems like it could be improved if some silicon were placed below it or if it was even just flattened out. You can see the marks where the housing is elevated and all the pressure of the base is going to in my picture:


I think my best bet is to epoxy mold the base together to make it strong again…

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Yeah I could make a 3d printed part that fit around that center part that cracked so you just just pour epoxy in and it helps you get the correct height

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My casters are also cracked… board is a year old. I’m not having troubles yet but at some point they will need replacement. Hope @Fosterqc can sort you out for now :v:

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I’m not sure if you saw this post from Aaron from 2 weeks back.

> new 360 base housings coming out in the next 3 weeks with updated materials, I’ll be making a post here soon with a video on this!

In that same post was this, which I asked for clarification on and never heard back…

Also from now on, if you have a battery issue, we’ll just send out a new battery, no more repairs, etc.

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Shit I don’t check this much just saw this… I just blindly added epoxy:

Low key id be down, wouldn’t epoxy all the way to that height theoretically help the board? I’m gonna order a set of casters from sb today for my other board…

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Hi, I’ve recently purchased a used summer board sbx (2020) and while standing undisturbed charging there was a pop and spark. After which it no longer charged and will not turn on. When the charger is plugged in the lights on charger go dark. I sent a note to their support email and am waiting a response.

I’d appreciate any ideas, and thoughts on how to trouble shoot, fix etc…

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Idk if y’all seen this but, are they upgrading bad google reviews to new v2 hardware for free?! Idk if it’s everyone, but if I got a board from them I’d get on that asap lol

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@jg8092 This is the TVS diodes blowing. The exact same thing happened to me, see my post like 2 weeks back.

There are 3x TVS diodes on the motherboard. One by the battery connector and one each by the front/back power MOSFETs.

If you ohm across the TVS diodes you’ll likely find it’s shorted. Remove the diodes one at time with a solder iron and to see which one is blown.

I have no idea how these can blow under something as common as charging.

Let us know what Summerboard support says. I suspect they’ll want to charge you like $250 for a new motherboard, when it could be a simple fix with a soldering iron.

@IDES Summerboard’s after market support has been infuriating, particularly if you bought second hand. I suspect they’re only offering free V2 upgrades for those still within the 90 day chargeback period. Where did you find these ā€œGoogle Reviewsā€?

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