RaceBoi: Tito Duality, Tomiboi Hellhound, 21S4P, 4WD 6395+6385, BN straight cuts, 9x3.5s, D100S (formerly RaceBro)

So today I checked clearances on the new deck.

165mm tires at full lean, deck clears the ground by 5mm. Tires are uninflated and it’s without my weight on it, so if it will actually work remains to be seen. Might have the move the trucks a hole closer to gain a bit of clearance when I put on the small tires.

Standing platform 86mm from ground with the same tires


Middle of axle about 8-10mm below top of deck, and I’ve decided on not running a footpad, (just a tiny bit of W implant in the middle) so that’s the final ride height, assuming I will still want to run 25/10 degrees (achieved by angled risers which add some ride height)


And front gear drive angle is setup. Using same angle as rear.


Backlashes checked, regreased, reassembled. Gears all ready to run. Well, rear would appreciate some fresh grease but that’ll have to wait when I am less busy.

So now I gotta make two boxes, one for my build, one for my friends replica

Mount esc, heatsink, figure out the wiring, mount box to deck. Quite a bit of work.

Then gotta extend the motor wires. They will run under the deck, inside a very slim thermoformed ABS enclosure that I still need to make and plan to mount with the threaded inserts that are already in the deck.

And in the meantime I gotta work on my friends build as well which has the same amount of work left plus a gear drive setup and the BMS install for the battery pack. The only difference is that build is using a flux deck which was more accessible locally but has a higher ride height.

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i really want to try a deck with that much lean. looks so comfy in a turn

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It feels really great. This is probably the most lean any high end esk8 setup ever had, as these trucks without lean stoppers allow 33 degree articulation which is significantly more than any other trucks I’ve ridden. Also not having to worry about undermount enclosure clearance really allows a much better setup in my opinion, it’s the only way to achieve both great ride height and lean

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:chestnut:

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There goes @Dinnye and @tuckjohn around the T race track again

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Have you considered trying to find some kaly hellcat wide wheels?
They have the double row angular bearings already, i bet you could make a spacer for those and have your ideal wheel pretty easily
@Dinnye i have a question, which tomboi deck is that exactly?
I really like what you have going on here!

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The Kaly wheels wouldn’t work, they have the bearings one on each half, both need to be on the same half otherwise it takes up more axle space which I don’t have. Also I am pretty sure it’s 3.75" and not 4" diameter

Honestly no clue which model the deck is :sweat_smile: Bought it from @AlexB maybe he knows?

It’s kinda similar to the Deathwish model but it’s not the same. This one has 30/30 ends which work better for me compared to the 35/25 on the Deathwish. Length is 41.5"

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looks like a hell-hound

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It’s the 41.5” mountainboard (didn’t have a fancy name). Not the Deathwish but similar. Equal angles on each end. Not sure if @tomiboi makes it anymore but it’s a good deck.

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That’s the Hellhound.

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Is the difference between the two only angles, or deck profile as well?

Deathwish has some w-concavity to it. The hell-hound does not.

The warlord is 35/35 with a little d-concavity. Stay-tuned for modularity. After I get moved and set up in my shop. I’d like to make it so you can chose the nose/tail angles, concavity and shape.

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will that be for only the mtb style decks or all your boards?

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I would looove to see a Hellhound length standing platform with W concave and 25 degree tails both sides that are customized to be the perfect length to make the duality trucks the perfect ride height down to the exact millimeter

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I’m doing it with my long drop decks too.
@Dinnye You should be able to do that when I’m done.

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lmk when you have that set up for the deathtoll. i’d love to try some changes for my replacement deck

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This is gonna be a long update post.

Not much progress has been done on my board but my friend’s 4wd copycat while not finished is operational.

There’s quite a bit of work left but most of it will be left after the Montrevel race. Till then it’s only getting swapped to the 8x3 Carlisle slicks and a new set of PETG rim spacers as the original PLA set finally failed. Not from use though, but from heat. It was left in a dark blue car in the sun at 35-37C ambient for a full day… It warped pretty badly from the heat

The battery build for that:





The finished heatsink and vesc wiring



On off button and receiver not pictured, wiring will going to accommodate the sensors as well which were not hooked up due to lack of time. Running VSS at the moment

Looking good on my 9x3.5s as well. It’s going to get one of the fresh 8x3 sets though!

And some balatonkarika updates: it was a 200km+ group ride event we attended with a small race on the first day. The race was mainly onewheel focused but esk8s also had a go. Sadly the timing was messed up. The esk8 race was on a rubber running track, really narrow, not a whole lot of stuff could happen. I was the fastest by far which was expected. I was surprised by the medium grip of the wide slicks on the rubber surface. I suppose higher pressures might have helped again but I was lazy to experiment. There were some pictures taken on a nice camera as well but those haven’t found their way to me yet so I’ll upload them later. Then I had a go on the onewheel track as well which was an off-road track, much more fun.


The slicks kinda worked. Real slippery but enough grip to have a bit of fun without competition. On the loose parts they didn’t sink in which was a plus.

The trucks handled super well offroad as well, taking the edge off the harsh bumps and they were stable when landing jumps. Did a few small ollies off some small ramps, no crazy jumps though

Then the 200km+ two day group ride. Me and my friend were 90 minutes late with the start due to some vesc config difficulties (bullshit stuff). Then we had to catch up to the rest.

This was my friend’s first time riding his board. He absolutely loves the Dualities and the 4wd.

Some fast charging half way to catch up


Joke
Was “only” charging at 30amps other than taking this pic because P42A don’t like more than that :crazy_face:

Then some panorama pics

I also had a fall, lost some skin on both my knees due to over throttle while turning onto a dusty road. Not fun. Unfortunately that’s it for having a bath in the lake…

Of course only because I refused to wear my bulky tsg dhp kneepads in 35C / 95F weather. I need to buy something for next summer that isn’t as hot so I will actually wear it…

And that’s about it for first day!

And second day.


Started the ride with knees that hurt like hell on every bump so you can imagine how I felt by the end when we got back to the car.

And my friend had his first fall on this board on this day, loosing grip on the shitty 9x3.5 turfs while carving.


But at least we have it on video :laughing:
Looks gnarlier than it is, he is okay though

Was a fun weekend!

And regarding my 4wd it should be possible to get it done for Montrevel race. But time’s tight. I have an exam on the 28th, no chance of working on it till then, and driving from 29th morning. However I should be able to get it done in one day.

But also the longer and lower deck in itself would be a tremendous advantage over the current setup there. And 4wd would also be pretty nice.

So now I’ll have to decide if I actually want to take it apart before…

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45A charging!? Even 30A is nuts. What are you using? You rolling with this on the board, or leaving it behind, charging back at the car? I’ve thrown money already at a mobile 18S charging rig that charges as 6S sub-packs at 10A, would love to not wrangle so many bits, carry one piece. Somebody making a GaN-based charge controller that handles 21S?

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It’s a Huawei R4875 based power supply converted into charger. You can get it on Alibaba

I just have it in my backpack and charge at 220v outlets. It’s quite heavy compared to more common charger setups but it can basically max out a 220v 16A outlet alone if it needs to. I am in the EU so every outlet is 220v thankfully. Also it runs quite loud.

The 45A charger is the 50-102V 0-45A model. I haven’t tried lower voltage then 21S on this one, but on another model from the same seller which was supposed to range from 12S-22S it really didn’t like 12S at high amps so your mileage may vary it you try it for a different voltage than 21S.

Also the solution is not GaN if you need high power. It’s looking into these modified server PSUs.

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