Yep, easily
Bindings also mounted
Rear phase wires wired up, front still needs to be done. After that just finish up the internal wiring of the box in like 20 minutes and run detection
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She’s done!!!
Phase wires soldered, sensors not at the moment. VSS works surprisingly smooth though! One click and then it gets going with barely any if any cogging.
Fiberglass tape “enclosure” to hold the cables to the deck.
Gonna make an abs one sometime but tape will do for now
Inside’s wired up pretty clean. Missing the hall sensors and metr pro module. My Metr module has some issues with it’s power delivery being dicey if the cable is held in a certain way. But I swapped the cable and it’s still not working so probably something up with the connector or the pins. Medium term project.
Battery in! Dang 88v and 4 ESC’s caps and it sparks pretty violently when connecting!
VESC config went alright. For now setup with 70m/180m, -160m/-90m, 25b/65b, -60b/-30b. Needs either more brake at the front or less at the rear, power delivery feels pretty good other than that though!
And she’s done!
Ride height - super low. Rear axle is close side on the pic which is like 3x as far from the standing platform compared to the front, but already pretty good!
Binding position is 10/10. Really nailed that. Miss having a W concave though. Gonna try to glue some W onto the frit.
All my riding on it was taking it around the block with some carving. Steering response is definitely different. Feels dead, quite dead actually. Maybe too dead. Need to have more time on it.
My guess for the “why” is that this is a combination of a few things:
- long wheelbase (105.5cm / 41.5")
- near axle standing platform
- lot of weight on the front axle
- WFB bushings inherently make a setup feel more dead
I basically had all the rebound disappear. All the not much rebound that I had previously. Now the first thing is getting some time on the setup and maybe get used to it more.
But me being such a tinkerer thinking of solutions before getting to know the problem, I think there’s a few ways forward:
- a bit higher angles, maybe +2.5d both trucks (32.5/12.5)
- 100a wfb if Brad is willing to make some
- 95a aps might be worth a try
- saying fuck them reacher motors and move the current V5 85s onto my offroader build which is waiting for parts, and swap the fronts to 65s to make it less heavy. 1:7, 21S, 175kv, 7.5-8" tires. What could go wrong? Not sure yet if this is the way I want to proceed, definitely need to actually start pushing the setup first.
Here’s the basis of that future offroad build
7 Likes
Stance is looking sexy!
Love this.
No curb hopping😉
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Will soon have another lightweightish torque monster board for that 
Way too heavy anyways for it in 4WD. 28kg / 62lbs
oh and also
The board now no longer has a haero bro deck but has a tomiboi deck. So name’s changing from RaceBro to RaceBoi
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I made 14mm wideners for 6.5" race tires. Mainly for the set of linnpowers I have coming in but also for the exway venators which I already have for an indoor only tire.
Profile looks good
Lowwww rider
Deck touches the ground a bit before full turn…
When I’ll run these tires I might move the trucks inward on the deck to gain clearance, but there’s some tweaking first.
Then I did a bit of drag racing on the exway tires
2wd time was 1.09
4wd sensorless 1.33, but the main issue was that even at 70/180 I was just spinning the front. Thinking about trying 50/200 tomorrow.
Then a T-race session. That 14.90 definitely felt quite fast and I was only improving but had to cut the session short because it became dark.
I miss my lines sometimes, need to get used to the steering more.
Also printing 2.5 degree wedges with kingpin pass through to bring the angles to 32.5/12.5. I need less lean / more turn now but don’t want to make the full 5 degree jump.
Gonna head out for a longer session tomorrow.
Then I also made W concave footpads. Not sure if they will hold up as it’s glued onto the frit… But I am not shifting my feet in the bindings so maybe it will work.
5 Likes
Quick update.
Yesterday I did 14.58 toeside in T-race, being fast in the straights due to 4wd (48 and 49 km/h), but slow in the corners due to the different steering response. Felt like I don’t have enough steering angle. That said I was turning pretty tight still, but it was definitely tiring because it required a lot of lean to be able to make any corner. Which was especially tiring heelside. Also wasn’t super confident in grip, have to play with the tire pressures again. I had about 0.8G in my best lap, but later in the session as I was getting used to the setup and started pushing grip limit more, I did manage around 1G where I was able to slide the rear a bit. In this spot I used to like low pressures but I was still on the high pressures I set at Montrevel. Hopefully I can experiment with the pressures next session.
Then today I swapped to 32.5/12.5 truck angles. I definitely got back a lot of the steering I needed with this. Took it around the block, then hit up a closeby parking lot, and it was much better. Next I’ll have to try it on the T-race track. Will have to see if I find it enough angle on T-race or if I have to change the front to 35 degrees.
10 Likes
Finally the weather allowed another t-race session now on the 32.5/12.5 angles. Angles feel really good. Responsive and turn great, deck lean not too much. Straight line stability is great as well, went about 65 km/h on it no issues.
Did a toeside PB, 14.00. Hoping to break into the 13s next session.
Also it seems like the linnpower slicks could arrive any day now, getting excited for those.
Been also experimenting a bit with putting my glove down
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Congrats dude, fast af
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So uhm, as you may recall, I used to have the phase wires exposed on the bottom.
That is finally changing! Today I made a thermoformed ABS enclosure.
Started with making a quick and easy mold from styrofoam.
This unfortunately wasn’t the smartest idea because when the ABS got hot, the styrofoam kinda melted and lost shape, making my first thermoforming job even harder.
It’s probably the ugliest enclosure you will see on any otherwise super high end build, but damn it was a lot of work. I suck at this 
But it’s only purpose is to protect the cables and it will do it’s job. I might end up giving it a second go if I ever feel super bored and don’t know what to do with myself for 5 hours. Also I will add washers below the screws but I am out of M6 so need to get some first.
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not like anyone’s looking at the bottom lmao. if it does its job protecting the wires, that’s good enough in my book.
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Maybe a timber skirting/kickboard would be ideal to form over?
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It would be much better but making a wooden buck for a one off is a lot of extra work.
The one I’m looking at in my house rn could be cut to length and taped straight to the deck super easy.
Why not use kydex or something like that?
I think kydex is pretty similar as far as working with it goes? Just a higher glass transition temperature? I was already struggling heating up the ABS.
Also, ABS was much more accessible to me. I couldn’t find a sheet of kydex, ABS I could find a 2x1.25m 3mm sheet for around 35€. That’s comfortably enough for 8 of these large enclosures.
And I don’t really need the better properties of kydex I think.
2 Likes
Today’s T-racing. Consistently could do 14.07-14.09 toeside.
53 km/h and 49 in the long straights, 39 in the short straight, no overshooting the cones, 117m total distance, 1G in all corners. Still only 14.07s
The only thing that can make me faster at this point is more cornering grip I think.
At 15C ambient cloudy weather, I was really pushing the edge of traction around that 1G mark. Went over the limit as well quite a few times. Last session the weather was a bit warmer and sunny when I did that 14.00.
Edit: I got the input that maybe a tighter line doesn’t always equal better even at this acceleration. Next session I’m experimenting with forcing myself onto a wider higher speed line.
I’m also excited to try out the fresh set of 9x3.5s from a different brand. Not sure if they will deliver the same performance or better, need to test it to know. They were cheeaaap though!
Also excited for the linnpower slicks when those come in, but I will have to use risers on my trucks to avoid scraping the deck on cornering. Which obviously isn’t ideal.
I am getting closer and closer to the realization that what I need is a custom made set of BRPs at 7.5" or maybe even 8" height. (Need to check ground clearance while turning)
However to fit those I need a custom made wheel hub set. Which supports the MBS pattern and has a smaller bearing spacing compared to standard.
That’s unfortunately going to be a longer term project. Most likely next spring.
Also the dimensions in that model need to be finalized, that was a blind mockup. I am not ready to get it manufactured yet anyways.
3 Likes
Finally down in the 13s!!! And not just for one lap, but 3 in a row! Toeside 13.83
This was on my usual CST tires.
Today’s findings:
Firstly: slow is smooth, smooth is fast.
Secondly: forget trying to count on trail braking during the whole turn. It stiffens up the front truck significantly on 4wd at least. Easier to let off completely for part of a turn.
Thirdly: the shortest line is indeed not the fastest line.
Next, I need to combine yesterday’s dynamics with today’s smoothness and findings. That way there’s definitely a sizeable room for improvement still, on the current setup and current tires.
6 Likes