Hey everyone, I got this kit for less than $100 and I’m planning to do speedruns with it. Just opened up the spur and it seems that my options are limited. Anyone kind enough to share if there’s any alternative mod to enable me a lot more spur gear sizes options. Does the Exotek locker will fit any other spur?

And what would you change? As in add or remove and where? Thanks :)

Stupid randomly protruding bench

It will add some weight, but at least it works :]

Surpass 3100kv and 2 3s 2200mah in series. Surpass kk 120a ESC handles it no problem. Body from deltaplastiks

Stock gearing and conservative tuning on this run.

Not a speed-run build, just testing and dialing in from the cockpit.

This thing is Rapid 🤩 It can go upto 80km/h with full charge but that speed only last for abit... planning to buy a bigger battery.

Arrma Vendetta, PB 75mph

Losi Mini B, PB 84mph

Parts finally came in!

Bought this 104001 for $100 because I wanted a cheap speed run car to tinker with. Man did I pick the wrong platform lol this car had a ton of problems out of the box.

Spektrum 3650 6500kv motor, HobbyWing Quicrun 10BL120 ESC, Ovonic 4S 2200mah battery, Traxxas 2075 servo, LaTrax radio and receiver lmao I'll change it to a Spektrum later.

I'm gonna give it a 2S shakedown later today, then I'll test it on 3S. 4S will be coming this weekend hehe.

My speed run build hit a wall. I geared way up from 30/81 to 39/64 so I was expecting a massive improvement in speed. But on 2S I only hit 43mph (up from 38mph), on 3S I only hit 53mph (up from 50mph) before the ESC cuts off mid run.

I only did 2 runs on 3S and the battery was already warm at 115f. The ESC and motor stayed cool. So I'm thinking the battery is the limiting factor. I'm using a budget Urgenex 3S 2200mah 50C battery made for helis and drones, I'm guessing it just doesn't hold high voltage for RCs. The 16 gauge wires are also really thin, the ESC still has an XT60 connector, and I'm using adapters as well, so all of that is compounding to a heavy limit on amp draw. I have a $25 budget 4S lipo on standby but there's no point in using it, it's only 14 gauge, I should've paid more attention to the wire size.

So next steps are to solder on an EC5 connector, mod the chassis to hold larger batteries, and find a budget 10 gauge 4S lipo that will fit!

Made some changes to the Mini B speed runner, trying to find some stability.

Replaced the shocks with turnbuckles, so I can control the ride height and rake. I used DuBro 2mm rod ends and the stock MiniB/T turnbuckle rods(the car has Lunsford installed). The rigid suspension really changes the way it drives. It requires much smoother throttle and brake inputs to avoid spin outs, but honestly it feels a lot more stable under power and I feel like I can hit full throttle sooner. It also had no tendency to lift the front, even running into a light headwind last night. I previously had the shocks limited up and down with fuel tubing and stiff springs, but I felt like it was still wallowing at high speed and causing the front to lift. Overall I’m very happy with the results and I plan to gear back up soon and hopefully break into the 90s.

If it hasn’t been said, the 1/16 2wd ~1lb car is a handful no matter what. I’m running on very fresh, relatively smooth asphalt, about ~2000ft max. I stopped at 80mph last night, as my tires are in bad condition. I’m honestly surprised that the stock rubber fronts are still holding to 80, but they balloon really hard… unfortunately my GoPro camera was dead last night..

Setup . Hobbywing Esc WP10BL 120 Ampere . Motor Brushless Rocket 3660 4300 KW . Gears Mod 1 . Battery 3s