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Belted tires are going to be needed by the looks of it. Also, I'd run the cage without the body as that body will catch alot of air at higher speeds. As for diffs, I'd say heavier fluid, but I'm really uncertain on that.

I would start with 1 million oil in the front and rear diffs, if it has a center diff I would go 2+ million oil for the center. You could also stuff some silicon ear plugs in each diff, one or 2 depending on size, and that would give a "soft locker" type of action and no oil required. I would also look for some belted tires, will greatly help with control at speed.

In my Losi SBR 2.0 set up for speed on hard surfaces I run 2 million CST oil in centre and 500K CST oil in front & rear. I would adjust your rear shock lower mounting point to the last hole closest to the rear diff as this will lower the ride height/centre of gravity. I also changed shock oils to a thicker oil for more dampening. To reduce the ballooning on my own SBR 2.0 I removed the tyres, turned them inside out and then wrapped them with thick duct tape so. You then turn the tyres back the right way and reattach to the beadlocks and it should act more like a belted tyre that way.

I appreciate how you keep it real, and show us the good, the bad, and the ugly!! 👍👊 💪You're not afraid or ashamed to share when you crash and break your cars! Respect!!

I'm glad to see nothing caught fire with such a brutal crash Raz!

Asphalt speed RC car WR, a very ambitious goal: does everything, preps wheels, diff, suspension to insane precision, ads carbon or titanium parts, precision made carbon wings, perfect pass and giro for absolute stability and torque control Off-road speed RC car WR, an actual and surprisingly, possibly a fairly easy to attain goal for him: no wheel prep, no diff prep, no reinforced parts, no special wings or body prep or even a body, no perfect pass, no gyro... Classic :D

Are you firm on using those tires? I think you will hit 100 easy on belted wheels

nice to see you on the camera more Raz and appreciate the comedy and keeping it lighthearted even though you had a bad wreck! try some belted tires! may be better at high speed! and maybe silicon plugs in center and rear diff is what i would suggest! looking forward to your next video!

Speedruns and traffic. Story of my life! Good runs, 💯mph will be no problem for you my man!!

This is an awesome build dude! I never comment on any media but this truck is awesome, belted tires and heaved diff oil, and a off road speed run as well as an on road speed run would be cool. Look forward to more from this build.

Sitting here sipping coffee and I came across your channel! Love the work man!

Congrats on 80k+ subs 👏👏👏 Another entertaining video, fingers crossed you get it sorted next time your out 💪

Razz… You are an innovator in this Hobby… A true inspiration to RC car hobbyist like myself… i’m looking forward to your come back… and I hit the bell notification so we can keep your numbers going up…💪🏾👏🏾✊🏾👍🏾❤️🙏🏾✌🏾😃… and I believe if I may if you tighten up the suspension it’ll help you stay straighter… in my experience converting an off-road car to an on road vehicle suspension is key…

It's always that one last run 😂 that looked so scetchy with how much those tyres were ballooning.

Hi Raz, contrary to popular belief I found that a locked up solid rear diff made my sc trucks more unstable at high speeds on gravel and damp sand. Sure, agree with other folks on belted tyres. Good luck man, would like to see what you setup and how it will survive the tests. Its going to be a great project to follow.

I Raz I guess the most stable to do an offroad speed run with is the mojave V1 or V2. It's lighter than the SBR but also heavier and more stable than the typhon and kraton offroad. Can't wait to see you make one!

Bloody hell Raz, fun to watch at least. I think you need to start with the wheels, after a certain point you are driving on saw blades again. Ummm, for what this car is supposed to do, I think you really need to test off-road and set up for that. Great vid, look forward to the next part.

Loved the vid :) Surprised the tires didn't blow out. :) As speed increases the contact gets smaller. You could say exactly opposite to your "normal" car where down-force created by the aerodynamics increases the contact area (however slightly). I think once you have the imbalance created by tires increasing any "slight" change is going to have an amplifying effect. Good luck with this build. I am going to enjoy watching you conquer this mountain. Keep up the great work. :)

Hey Raz, Great channel mate love the content you are a master of speed for sure , you should run this on grass for the fastest off road speed rc 👍👍👍

your videos are so so cool Raz , i love every second and the way you put them together is nothing more than an art form , 10/10 Man , Lets hope you can send this bad boy to the moon @ 100+ MPH that would be awesome , i was thinking of getting me one of these but leaving it stock as 60 MpH for now is plenty lol cheers Raz and Thankz

I subscribed to your channel only recently but I'm glad I did it. Watching your videos for a while and I really do appreciate the effort you give to the rc world 🌎 😊. Especially the speed runs. Best wishes to get the world record. Hope Kevin is not reading

Wow, you will need some belted tires for that beast. 👍 The belted Katar tires from the Talion EXB should do the trick. 🤗

Great content as always brother! Took my Limitless GT out for the first time this year, today....had my Perfect Pass turned down all the way, pulled the trigger a bit hard and now it's a 3 wheel drive! Rear right wheel has no power, which is scary considering I have the Scorched RC locked rear :) Time to tear it down I guess! Take care Raz!

Oh wow what a crazy video as always keep it up Raz hopefully we can see you soon

I recommend stronger springs, and thicker fluid in the diffs. After upgrading my Mojave with a Max 6, 1750 kv combo, I had a MAJOR problem trying to drive it straight for top speed runs. It looked almost exactly like your truck did when I would try to go full throttle. After upgrading to stiffer springs, front and rear, it made the truck MUCH more manageable and will actually track straight now and/or not fight nearly as much against steering input. You know enough about the other issues with the tires/etc that I won't comment about those.

The FPV Piolt in me heard you say last run I was like NOOOO never say that its always when you crash lol. Good stuff Raz and if I were you I think 1mill in the diffs for sure and if possible lock the center.

To my knowledge the rear diff is already locked but you need to hit up Vitavon for their gear set for the car, the rear links, basicly the Vitavon kit. Plus HR and GPM make other parts like aluminum mounts to mount the links and such too. And if nothing else BEFORE you run, get the rear body brace. There are several on eBay, but Schorched makes one. Also, HR has a hardened steel drive shaft

Another great video and project. Thanks

DAAAMN that was brutal. 😆 To be fare it wasn't made to go 80 - 100mph to see it hit 81mph was pretty dang cool. 🔥 Definitely needs belted tires or something a lot stiffer. Can't wait to see what comes next bro. 🔥👍✌️

Some suspension tuning, proper diff weights, belted tyres, and just the cage, and I reckon you've got it.

👍👍 thanks you for share the video I'm thinking the same way how to put a big motor to my Baja Rey 1/10 do you have any ideas

1-2 million weight oil in the diffs. Perhaps also for on road testing use 1/8 buggy foam tires to prevent it from "wandering" as you try to keep it in a straight line.

The diff fluid is fine with a set of street tires. Those stock tires are very soft. If you intend on running the offroad tires. 500k front, 2 mill center, and 1 mill in the rear.

You could try to stop the tires blowing up by strapping them. use some strong fishing braid that has zero stretch. More tread on the ground should make it more stable.

the rear diff is not a problem in my opinion, but you really need belted tires in order to keep it controllable and you certainly need to have a very big anti-roll bar to keep the torque twist away...

Must admit they were pretty scary runs, great job controlling them, start with 1 million diff fluid, get another diff and lock it so it can be tested on the same day, great work my friend, keep it up, 👍👍👍👍👌👌👌👌

I would find some better tires(belted) and lock at least the rear and center diff to start with. You may have to lock the front as well but that will limit your steering which may be a good thing in this case.

I would start with some Method RC belted tyres as for locking the rear diff that will only make it more unstable you’ll be drifting all over the place 😎 Torque twist is just a part of straight axle life that’s why hittting 100mph with this really will be a challenge 🤷‍♂️ not to mention how much the body on these type of rigs parachute 😬 I would concentrate on getting the Road record before going down this rabbit hole 😂 can’t wait to see more of both, good luck 🤞😁

I think the weight of the body and the spare tires especially would have helped a lot with stability. I love that you're trying this, keep going!

Are u running a stability gyro?

You also need to stiffen the shocks, do the steel springs and go high on the shock fluid. Also if you had the body on the car it would have stiffened the cage up and possibly saved the car.

There is an easy way to take apart the SBR, 10 screws a d the whole cage comes off with the body. 4 on the chassis, 2 at the top of the rear bulkhead, 2 up front behind the bumper, and 2 at the rear brace that supports the whole floating rear of the body. It is easiest to drill 2 holes in the body to get to these.

I think you should shorter and stiffer suspensions for more stability. And you can use ropes for extending wheels.

I would stiffen the shocks up, to start. A lot. That will help eliminate a lot of that body roll, which is contributing to, if not causing it to "diff out" like that. If it has 40wt in it, bump it up to 80wt. As far as rear diff weight,I would at leastb match the front. You've already got super thick fluid in the front and center, right?

Definitely diffing out, up the weight of diff oil or lock it with some ear plugs or putty. I'd also up the damper oil to help with weight transfer under power

Hi Raz. I fitted top-tuning 24mm wheel hex's and 5th scale wheel and tyre combo (80mm wide) as the stock wheel setup is not great even on 6S the balooning and grip is terrible, this has tamed the beast quite a lot even on grass. I would lock the rear and centre diff and leave the front to start with. I cant wait to see the next run, great project 😎👍

Honestly there are a few things you could do t stabilize it. Without a doubt start with different tires. You could still technically run offroad tires and possibly gain 5-10 mph. Kudos on testing on a crazy road though. Good content 👌

Most important factor for me is belted tyres, it will help reduce the amount it walks around the road and with any luck it will stop you articulating so much and causing one wheel to spool up.

Definitely recommend using gorilla tape in the tires if you run them as they balloon a lot and some thicker oil/ear plugs would help. Look forward to more vids

Belted tyres are a must but I wouldn't lock rear diff solid as your just wheelie. I'd go heavier than it is tho

Quality content right here. Keep it up!

Some strong wire around the tires (its cheap you know🤷🏻‍♂️) seen it help against blowing the tire up.

Are you using a steering gyro to assist with stability?

I was excited for this one damn I hope ya hit at least 105

For the diff you just need to put some crazy heavy dif oil inside wich will basically lock them up. Use ear plugs and it will lock it up and make it much easier to drive

Raz, not sure if it was the angle of the camera. But it looked like your back right side tire was cambered in a little bit. Like to see this rc vehicle reach the 100 mph , that's would be epic.

I did this when I was a kid. Went to the hobby shop and told the guys I wanted to go 100mph with am ecx amp MT. I got to around 80mph. My tires were always the limiting factor and that what I think is holding you back. Those tires will balloon and you'll lose control. Either need to get different tires that wont balloon like that are maybe some fishing line around them? Imo those tires gotta go to go faster. Its not about diff fluid. You got the tire speed for 100mph plus but the tires are ballooning before you get there.

Ah raz buddy it’s always the way the last run is when it gos wrong buddy but what a awesome build bro

I run ear plugs in the rear so it tracks straight your tyres will need to be changed mx43s seem to work well but I have some taylor rc foamless to try. 80mph on road is more like high 60s off road

What others have said. Thick oil or earplugs. Belted tires will help a ton. Better control, no chance of a catastrophic tire failure and you won't lose power to tire deformation.

I locked the rear diff on mine, it drives much straighter on dirt and faster thru bumps, I recommend a rear cage stiffener due to it shaking a lot, but I dont do speed runs, Im a scale fanatic, and desert performance is my fav

I liked it. Clean build. Even if the end was a disaster good results I think

Can we see how fast it is off road, maybe a dirt road or freshly mowed grass and other congrats on 80k mate 🇦🇺🤘🏻🇦🇺

Lmao your hyper-speed build edit was great. All those body screws 😵‍💫😵‍💫🤮

You could check out Louise wheels.. they have MFT which stops balooning. I had some pretty good results with them

I'd start by thickening that shock fluid and maybe some hefty shock limiters . That shock travel is allowing it to float all over and in turn allowing the flex so that tire lifted right off the road and it was loss of traction from there. I would thicken the fluid too. Idk what is stock in that but at least throw some 50k in it. I wouldn't lock it if your gonna keep driving it on road tho. Because you not going to 100% eliminate that flex of the car so you want the diffs to be diffs lol. Awesome idea. I can't wait to see what's next

Definitely lock the rear diff. I have the losi ¹/¹⁰ Baja Rey Raptor. In between the solid rear axle and the tires turning into pizza cutter. Speed runs on pavement is nearly impossible! Maybe better luck at the runway, more room to to wonder all over🤭 Quick question what would be the better TP motor for my limitless and a hobbywing max8 for bashing and a speed run here or their.

Okay Raz here’s what you do get some gorilla tape and bubble gum and slap it all back together then lock both diffs and send that doggy to the moon brother. Lol 😆 much love brother thank you so much for your fun videos. It’s nice to see you do more than one thing once in awhile cause RC is fun and we should not forget that on our quest to be the fastest.

Try using a 10th scale arrma senton there’s quite a bit room for a larger motor and mine survived being slammed into a brick wall at almost full speed stock with no snapping or bending

No bud you make insane passes and content 👌 awesome,your job quality shows in the numbers

Raz you should invent a circuit breaker that’s G force triggered. So in a crash it pops and saves your ESC. Maybe it could sit right off the battery or something.

I recommend soft locking the diffs with silicone ear plugs like Kevin Talbot uses for his bashers instead of throwing heavier grease or oil that thins out with temp increase . I also recommend heavier shock oil, lowering the rig, belted tires ( you can also take some light weight plastic meshing with some shoe glue and make your own belted tires) and run the cage without the body so you don't take flight.

You need to get the tires belted, you can do this with strong fishing wire if you want to keep the same tires.

A crash always sucks, but you will get there with it

I currently am experiencing the same situation, hauling ass at half throttle, give it more and she pulls hard right and almost crashes... I came to the conclusion that the tires are causing the problem?

Hey Raz , I just finally got hold of the new v2 carbon driveshafts . They sending to Australia. I want to be the fastest speed runner here down under with some help from you and all your great tips and trips! I mean tricks. Thanks man! 🤙🏻😜

1ST Issue first Raz, belted tyres, you're getting way too much ballooning under load, it ruins any chance of a repeatable run and always leads to cars floating away into oblivion, Rip HobbyWing XeRun Revo combo (That thing never let any tyres last more than 30 seconds and it was before belted ones were really available)

I'd also add in some thicker damper oil too, but, good effort mate,

Idk, I only have a year or two exp...But if you can access the length needed for the run? Why not add more weight? (in the rear, and maybe even all around as long as you have the space. You already know you have the power? Since you already know you get 81-mph, I think upgraded servo and better running gear plus weight might do the trick🙃

That is crazy power !!!

Maybe some tires that don't balloon as much.. nice runs though!

That was amazing. Thicker diff oil.

Try adding a lateral stiffener tying the the back to the chassis to the front on both side of the vehicle somehow so it keeps the car from breaking in half like that

Please buy and review the losi mini t 2.0, it is 1/18th scale, but it has oil filled threaded aluminum shocks, aluminum chassis, fully RTR, and someone swapped it for a castle mamba micro x and got 85+ mph!

Awesome amp draw 👍

Foam tires will settle it all the way down. Love the videos

Nice build👍wait I mean crash 😂👊

Hey Raz. Are there going to be more Perfect Pass Launch Controller available on Amazon? They are currently out of stock.

Try modding the diff to accept a ball diff. That would be pretty incredible

If its spinning the wheels, get larger diameter banded tyers fitted, then you'll get less spin and a better top speed, basically its a gear change to help get your goal

I'd run the body for better aero for sure. Not a sealed body so I doubt it will catch too much air. And id definitely thickn up all three diffs. With the power u have. Also id lower it

Silicone swimming ear plugs in the diffs works really good and it won’t leak out

What motor is that in this Losi?

I would go as thick as I could on the diff fluid, and something I would do is duck tape the inside of the tire. It acts like a belted tire, and will stop most of the ballooning.

i would lock the diff Raz with that much power higher fluid probly wont make that much of a difference to be honest.

Maybe tie a wire around the tires properly and balanced, so too keep them from ballooning uncontrollably.

Definitely use thicker diff oil and try some belted tyres to stop the ballooning

Get some Louise uphill belted tyres or duratrax are the same I think. I got some on my X maxx and my arrma big rock and they handle speed no problem 👍🏻🤘🏻🤘🏻

You need to adjust the rear shocks all the way back that will GREATLY I'mprove handling