QUAD 4WD HubMotor Build + Hub Motor Testing

[chuttney1]

Made a quick graphic using a photo I took before pressing the top, something I couldn't do until I verified the 12s BMS didn’t have any clearance issues. The large compartments get routed out a second time after the top is pressed and an aluminum top cover is used for the final enclosure.

Board dimensions for this one?

 

[chaka]

thats a great looking shape! is it meant as drop through or are you filling the chambers there as well?

Those are chambers that are cut to save weight but they also double as a telemetry readout compartment. I do install a cell in those areas when pushing for maximum capacity.

Made a quick graphic using a photo I took before pressing the top, something I couldn't do until I verified the 12s BMS didn’t have any clearance issues. The large compartments get routed out a second time after the top is pressed and an aluminum top cover is used for the final enclosure.

Board dimensions for this one?

Dimensions: Length 38.75 inches / Width 10.25 inches
I can go shorter with this one without to much trouble.

 

[chaka]

A little update on Dexter's build. He has been gracious enough to let me focus on a few other builds and VESC manufacturing but it is time to finish this sweet deck!

The deck still needs some profiling and another coat of epoxy to seal the edges. If you look closely you will see the the cavity has a rabbited edge to receive the aluminum top hatch.

 

[torqueboards]

Sweet!! Can't wait!

 

[okp]

beautiful, this is going to be STRONG !

 

[chaka]

What an awesome deck, what's the battery configuration going to look like in there? What sort of capacity and ratings are we looking at, I assume the channels are ~65mm wide to fit cells or is this a lipo pack style build?

This board has an 18650 12s6p pack(72 cells), it will get about 40 miles on a full charge. The battery bays are a little wider to accommodate the cell level fuses, fishpaper, and shrink wrap.

Edit:
I want to add that this board is fresh off the bandsaw, still needs to have the edges rounded.

 

[torqueboards]

can't wait!

 

[whitepony]

really like the shape how much concave does it have?

 

[jeroenimo]

"Add to basket"

Oh, I already did!

My fingers are itching to get that board coasting with such an awesome range.

 

[Vulthor]

The board looks great, and the setup with Vesc and hub Motor gonna be insane.

The only beside I see is the weight, how many does it reach fully assembled? (The deck is really thick on non cnc parts)

 

[jeroenimo]

Standard 40 18650 cells will make the total weight about 17 lb or 8 kilo. Adding more 18650 cells will make the board heavier of course.

 

[rmrf]

Samsung 25R weight 45 grams for example

 

[astilwell611]

Whats the range on the standard 40 cell?

 

[chaka]

really like the shape how much concave does it have?

Cavity depth is about 1/2 inch or 13mm.

The board looks great, and the setup with Vesc and hub Motor gonna be insane.

The only beside I see is the weight, how many does it reach fully assembled? (The deck is really thick on non cnc parts)

The areas that look solid are actually hollow too. With 72 cells it will probably weigh somewhere around 20 lbs.

Whats the range on the standard 40 cell?

About 20-22 miles or 33km depending on velocity.

 

[whitepony]

Whats the range on the standard 40 cell?

About 20-22 miles or 33km depending on velocity.

oh, funny, 33km, thats EXACTLY the number I got with dual torqueboard ESC and dual enertion rspecc, 75A 90mm flywheels and 10S4P battery.

I was a little disappointed by that range, what kind of average speeds were you talking about here?

 

[chaka]

Whats the range on the standard 40 cell?

About 20-22 miles or 33km depending on velocity.

oh, funny, 33km, thats EXACTLY the number I got with dual torqueboard ESC and dual enertion rspecc, 75A 90mm flywheels and 10S4P battery.

I was a little disappointed by that range, what kind of average speeds were you talking about here?

It's an easy calculation, divide your total watt hours by 10 and you have your probable range in km. However, the larger packs are much more efficient due to less voltage sag. You get an almost flat discharge curve which extends the range. When comparing a 40 cell pack to say an 80 cell pack, the 80 cell pack will give you an extra 5-10% more mAh's per cell.

 

[chaka]

Fitting top hatches today!