Last summer I thought it would be nice to have not only MTBs but also a commuter board which is a bit more practical and has more range than my good old boosted board.
So I started to get some hubs with the first GB from @rey8801 MAD hubs as well as ordered one of the Tayto decks on the @moon GB.
That was in September last year and I thought it would be an easy to finish that build till January/February this year…
but than DIY happened…
The Tayto took way longer for production as planned, which was good in the end as I came across @Sender skinning skills and decided I need that for sure.
Sender was that kind to pack some other stuff I ordered in US together and shipped all over in one parcel which saved me a ton on shipping I would pay for all the single parts.
After two weeks of praying all ship well this parcel arrived with all that goodies
Meanwhile it was already end of March 
The enclosure from @BigBen is a dream and just work flawless
Test fit how much cells I could get in
At this point I was close to go with Surfrodz and dual 6374 maytechs, just because I thought I need that.
I bought all necessary hardware, but than realized that it´s a bit stupid to do so with a 12s3p battery pack.
Still have the parts as back up in case something goes wrong with the hubs, but in case I probably go with dual 50xx motors than.
The battery, the battery I decided to go with Sony VTC5A cells.
I don´t really need the extra capacity of the 30Q cells and I was hoping for a bit less sag with those cells, pluuuus they where on sale on Nkon aaaaand I anyway ordered some for my MTB pack, so I went all VTC5A.
I thought a lot about the how to best do the wiring. I worked out my own 3P PCBs and got them produced toghether with some @akhlut 3P and 5P PCBs as backup in case mine don´t work out how they should. It´s not a big deal to create your own PCB, but still a lot of new things for me. Thx here to @DerelictRobot answering the questions I had and couldn´t find out by my own.
I still have 3P and 5P PCBs left over, so in case somebody is interested I will put them up for sale anyway sooner or later.
3P packs are hold togehter with silicon.
The PCB is packed on with silicon as well.
Test fit with two Flipsky VESC 6.6
4 of the packs are in one rown, which is packed with plastic corner protection from the hardware store and covered with silicone heat shrink.
all glued into the enclosure with silicone and space for routing the balance wires later
There is a 80A fuse on the positve main lead and a 10A fuse on the charge port as well.
The balance wires routed inbetween the packs covered all over in silicone.
I deceided to not go with a bms.
Firstly it´s super less space in the Tayto enclosure.
Secondly I will not charge it so often as I need maybe 5-10km everyday to commute.
So plan is to charge it 5-10 times just through the charge port and than open up the enclosure every two weeks or so to do a balance overhall check.
The balance wires are routed out to two 6S plugs, so I can use the smart bms I use to charge my Lipos etc.
The initial plan was to use Flipsky vesc6.6 for the board, but than @YUTW123 came up with his mini maker x vesc 6 which seem to be a good option as they really super tiny and the specs say they handle the current I would need for the hubs.
So far I´m very happy with the escs. I did and still do some recordings to find out what they really can handle.
I will post about them a bit later some more information I think.
After the big wave of smoked up anti spark switches I decided to stay oldschool and go with a simple loopkey.
A bit a personal note should be on that one as well, so I came up with this
So, some weeks ago I finished the build. It took me close to one year from the first thought on doing that.
If I look back, it wasn´t that bad as the waiting time brought me up to some opportunities I wouldn´t have had if everything would work be in time.
Unfortunately the last weeks where filled with a lot of rain and I couldn´t drive as much as I wanted to, but I still hope it will get better soon.
Last but not least some pictures of the finished board
