So I participated in Hummie’s Kickstarter campaign in 2019.
At the time I also bought the ESC (Flipsky FSESC 6.6 dual mini), battery (eskating.eu 12S3P 15Ah Li-Ion with 80A BMS) and fiberglass enclosure from @BigBen.
I stored them until a few weeks ago when finally I received the parts.
Everything seems of excellent quality. I am very satisfied.
I started by drilling the holes to attach the enclosure to the deck. I used hot glue to poke the two together.
My Li-Ion pack is a little wider than the compartment dug in the deck, so I bought a router which I used here for the first time… I had to put some wood filler back in on one side…
I coated the inside of the enclosure with Shoe Goo.
Once the wiring was done, when the smart BMS was first switched on, an ESC capacitor exploded. The ESC still worked. I removed the capacitor, which wasn’t easy as it was cast in epoxy resin.
I ordered new ones from AliExpress, but I won’t receive them until August…
https://fr.aliexpress.com/item/4000746324994.html?spm=a2g0o.order_list.order_list_main.33.21ef5e5bt5OxhF&gatewayAdapt=glo2fra
So I finally bought new Flipsky ESCs, two FSESC 6.7 mini Pro. I had already used two pairs on other builds without any particular concern. These are equipped with 100V capacitors instead of 63V for the FESC 6.6 dual mini.
I replaced the smart BMS switch with an XT60BE-F port, and added an XT90E-M on the circuit to avoid new problems.
https://uk.aliexpress.com/item/1005004166086908.html?spm=a2g0o.order_list.order_list_main.57.21ef5e5bt5OxhF&gatewayAdapt=glo2eng
https://fr.aliexpress.com/item/1005005435104056.html?spm=a2g0o.order_list.order_list_main.63.21ef5e5bt5OxhF&gatewayAdapt=glo2eng
I machined holes on an aluminum plate to attach the ESCs together.
I added a fuse to the charging port.
I added rubber washers to the fixing screws of the enclosure (https://www.amazon.fr/dp/B06XQMSLQN?psc=1&ref=ppx_yo2ov_dt_b_product_details), and a gasket all around with black Sugru. It was not the best choice for the joint, because it is not liquid enough and it was therefore a hassle to spread it.
Grip is DopeGrip Pro :
Here is the final rendering:
I updated the firmware to 6.02 following Flipsky’s recommendations (especially the disabling of phase filters), in particular to benefit from the new HFI.
I set each ESC’s Battery Max to 40A, Battery Min to -20A, Motor Max to around 35-40A and Motor Min to -35-40A. The Absolute Max must be increased to around 100A otherwise the HFI triggers ABS Over Current faults.
It starts without cogging, including when climbing.
As @Hummieee advised me, I use it as a front wheel drive.
It’s flawless. Free rolling downhill, while retaining the ability to brake, is what I like the most with hub motors.
I use this remote control from HotRC: RC DS-4A.
https://fr.aliexpress.com/item/1005004963118061.html?spm=a2g0o.order_list.order_list_main.158.21ef5e5bt5OxhF&gatewayAdapt=glo2eng
Cheap, solid, reliable. It’s also prettier than the GT2b I’ve been using so far.
In short, I really don’t regret having trusted @Hummieee. Many would have kept the money and disappeared in the face of all the problems he encountered (COVID pandemic, etc.)
