“The 100mph Traxxas Slash Project” - EPISODE #22 - Top Speed Attempts!! GPS Recorded!!

[@DoURC]

Would it help to run a battery each side, to evenly distribute the weight. May help it go straight. Plus you had quite a bit of rear wheel play. Either way 80mph is quick, keep it up. 👍

[@RCKnockout]

Thanks! Yeah I have some slop going on in the rear. I probably should shim it. A 3S lipo on either side would help even out the weight

[@gourobkundu2173]

Yeah. Getting close. Can feel that. All the best.

[@RCKnockout]

Thanks!

[@theforzaboi3776]

I actually got this in my recommendations so congrats

[@RCKnockout]

Thanks!

[@alfiecox6946]

Same

[@fumasrcs1886]

that's cool man🙌

[@kitchenbriks3685]

Just sold my slash to build an LMT. Best decision of my life!

[@RCKnockout]

Is that the Losi Monster Jam looking truck?

[@StopFaffin]

Great run mate I find it impressive that you broke the 80mph barrier, but now it will become increasingly difficult to reach higher speed, if I may come with a few suggestions, 1. The body needs to be more aerodynamic, meaning no holes to let air flow through. 2. Wheel arches to prevent airpressure to build up under the body. 3 rear diffuser to help the car get sucked to the ground and prevent air pressure build up under the body. 4. Front splitter must be fixed and glued to the wheel arch, for keeping it stable.

[@RCKnockout]

Thanks for the tips! I’ll definitely have to make some changes if I want to crack 💯

[@theworry184]

Need to do the burn out on a piece of carpet can use the format of a car Messing up your tires wearing them unevenly and that can make you vear off

[@RCKnockout]

Nice tip….didn’t think about that…what kinda carpet are we talking about?

[@theworry184]

@@RCKnockout Can use a carpet doormat can use a car floor mat An old piece of carpet

[@EJ-74]

Great idea 👍✌️

[@jarretzendt3527]

Havent seen an update in awhile. Hopefully more videos to come on this!

[@RCKnockout]

Yep…I think a new video tomorrow or Monday…can’t remember

[@christiansrcs7789]

More power

[@alantaylor353]

YEEE-HAAW.!!! I enjoyed this.! Subbed & liked & best wishes from Scotland.!! 😜 👍

[@RCKnockout]

Thanks! I appreciate it!

[@josediaz9483]

Nice run. Your getting closer and closer to reaching that 100mph goal. Awesome video bro.

[@RCKnockout]

Thanks! I appreciate it!

[@theworry184]

Congratulations on the PB

[@RCKnockout]

Thank you!

[@ethannunley1205]

Only like a 3 second burnout is good to warm them up and you don’t want to wear out those tires

[@RCKnockout]

Once they wear out I’ll just replace them

[@_Volkhunter_]

My man said freakin like 10 times. He was stressed out son😂😂

[@RCKnockout]

It’s an expensive car lol 😂

[@anpianpi3673]

saving money for buying this tough rc car. Love it

[@RCKnockout]

Thanks! It’s an Awesome rc!

[@FortekNine]

Nice run man, your getting close 😁👍

[@RCKnockout]

Thanks man! I know this power system can definitely exceed 💯….it’s just a matter of getting a solid run in and everything coming together at once

[@petekobraoutdoors7324]

When you did your first burnout the rear end was wobbling. Anyways, keep on goin, it will eventually get better 😌 KEEP ON BASHING, OR SPEEDING! FROM BARRIE ONTARIO CANADA

[@RCKnockout]

Yeah it might just need shimming. The rear suspension arm probably has some slack in it or something

[@jdubbfam37]

I think your suspension might have a lot you do with it ? Like a shim or two in the hub axle caryer or next to the bearings. Theres alot of play

[@RCKnockout]

That is true there is quite a bit of play

[@petermakeithappen8336]

Great effort kid the biggest problem is that Ross your on. It's easy to bumpy. You need to find a spot that's really smooth like a big parking lot and that thing will hit your goal

[@RCKnockout]

That’s the best spot I’ve found near me….if I can find a better bit of road to run on I’ll definitely try it out somewhere else

[@DoRC]

Get a scrap of outdoor carpet to warm the tires up on. It'll warm them up faster with a lot less wear. If the surface is too rough like the road what your primarily doing is removing rubber. That's actually counterproductive because of the heat leaves with the rubber. Also for speed runs you really don't need to worry about preheating the tires very much if at all. Your main enemy on speed runs is going to be aerodynamic issues not tire grip.

[@RCKnockout]

That makes sense it’s more for the launch. I didn’t know about the carpet thing….I don’t carry carpet with me though lol 😂

[@rcpd3157]

Is your splitter catching on the road or something? I seen it catch. I thought it may be. I recommend using your floormats to do a burnout on if you want your wheels clean. I would put my lipos on each side to, that's just me, it may not matter to you or your style of driving. You are faster than me.

[@RCKnockout]

Yeah it was catching on the road. The thing sits so low it keeps on breaking along the same point so I just keep on glueing it rather than replace it. Thanks for the recommendations I’ll have to look into the floormat burnout. I kinda want to run two 3S packs on either side to even out the weight

[@prodee1990]

Hello, Wat are the metal pieces on the side of the car? and wat are they called? Where you mount the gps

[@RCKnockout]

Aluminum battery trays

[@prodee1990]

@@RCKnockout Thanks! Love the vids. Cant wait for the next 100mph Slash video

[@RCKnockout]

@@prodee1990 no problem! I’m glad you enjoyed it!

[@christopherrice1375]

Looks like the Gorilla tape on the front helped keep the air from getting under the body. Now you need to re-glue and gorilla tape the splitter. Eighty MPH is not too bad considering you really didn't get any great passes in. Good luck:)

[@RCKnockout]

Thanks! True I never got to full throttle….I can’t really without it spinning out on me…. I really gotta ease on the throttle

[@KurtsRCs]

Nice runs you are getting there, did you make the battery trays or did you buy them from some where

[@RCKnockout]

I bought them off of EBay

[@toolbaggers]

That gorilla tape was folded in before the start. You need to tape the body and tuck it under the the foam bumper or something because you should not be able to push it n with your fingers. Try sticking your hand out your jeep's window going 100 mph to find out how strong it has to be.

[@RCKnockout]

That’s not possible…..my Jeep won’t go 💯 lol 😂

[@jamesgeorge609]

I think that duct tape mod helped a lot,,,good call,,,,,,,you definitely have to find a smoother road,,wot the course pavement you’re not getting 100% tire contact,,,,,keep trying,,you’re getting there 🇺🇸👍

[@RCKnockout]

Thanks! I appreciate it…….A smoother road without ditches would be awesome. I just haven’t found a better location yet

[@Earle_stoeckel]

When the beep came my phone hade a add and that made me laugh 😂

[@RCKnockout]

Lol 😂

[@maskrc1767]

Very cool nice project bro😅💪

[@RCKnockout]

Thanks man!

[@islandrc-duke1972]

cool runs getting close to 100

[@RCKnockout]

Thanks 😊

[@Bziiit.]

Preventing air to come in with gorilla tape Also every windows are opened. Good luck man

[@RCKnockout]

Thanks! Yeah I should try to tape all of the window openings that I cut out

[@jeremyfowler8671]

Badass

[@kenbetza]

Won't cutting out the windshield affect the airflow you need for the spoiler to work properly?

[@RCKnockout]

Not sure? Probably…..I don’t know much about aerodynamics to be honest lol 😂

[@kenbetza]

@@RCKnockout the little I know would suggest the airflow has to go over the windshield across the hood of your truck and down to the spoiler to put pressure on the spoiler forcing your tires to stick to the ground I could be wrong though

[@RCKnockout]

@@kenbetza my thought process was to cut out as much as I could so the air would flow through the body. Cause the issue was that the body was turning into a parachute and was constantly going air borne. I think it has helped significantly with that issue but it probably has compromised the aero and traction capabilities

[@kenbetza]

Got yeah, makes sense.

[@damonwoodall4715]

As others have mentioned. Use carpet to do your burn out. The rough pavement is making your tires unbalanced. Hoons aren’t the best for speed runs as mentioned too. I would find a smoother road......for speed runs are you are going to keep tearing it up!

[@RCKnockout]

Thanks for the info and recommendations!

[@RayRiv73]

I have a asphault FiestaRally how can i get a slash body that low?

[@RCgarage302]

Try using GRP tires, I have a slash speed run car and the hoons weren’t cutting it

[@RCKnockout]

Are they foam or rubber?

[@RCgarage302]

@@RCKnockout they are rubber but the compound is way stickier than the hoons

[@RCKnockout]

@@RCgarage302 are they the same size as the Hoons? They run 17mm hexes?

[@RCgarage302]

@@RCKnockout yes they are 17mm, I have a couple videos on my channel that I just posted if you want to see them, they aren’t very good I just started uploading to KZbin

[@RCKnockout]

@@RCgarage302 I’ll have to check them out! How much do they cost for a set?

[@nomoacidburn2185]

I think that you could make it too 100 mph if you use foam tires

[@RCKnockout]

Do you know of any good ones?

[@nomoacidburn2185]

@@RCKnockout unfortunately i dont know any good foam tires i just know that they get a lot more grip sry i dont know any good ones

[@nomoacidburn2185]

@@RCKnockout you also dont need to warm up the tires if you use foam ones

[@RCKnockout]

@@nomoacidburn2185 I did know that actually. I’m surprised foam has more grip than rubber tires do….that’s super surprising

[@nomoacidburn2185]

@@RCKnockout well it makes it so when your reaching high speeds your tires don’t balloon up and they still do give you more grip

[@justaguyrc6303]

Congratulations on making it to 80mph and welcome to the club. You and I have the same idea in mind except your goal is 100mph and mine was 80mph. You can get there with the motor and ESC, but some of the parts on your car are holding you back from hitting 80mph sooner than you really should have. Example is that I hit 80mph after four passes. Your truck has a few things I would change that's not helping you with your aerodynamics. The body you have should mirror what Traxxas did on their truck, so the air flow goes through the front and exits the rear. The battery trays should be removed, because the balance on your chassis is off. The tires your using will get you to 80mph, because I used the Dboots white letter version on my truck. Some say they can't get you to 100mph, but the Infraction, Felony and limitless have done 100+ passes with Dboot tires on them just fine. They could be argued if they're the best choice or not but that's in the eye of the beholder. That's another conversation entirely if we want to have it. In my opinion your aerodynamics and chassis balance is hindering you from hitting 80 sooner and will make it harder for you to hit 100mph moving forward. Look up my video I just posted and see how my truck looks. I put some data in there as to what I'm running and my concept behind the build. The video isn't the best, but I was focused more on hitting my goal rather than giving out data at the time like you have. Now I'm working on a second video to show my chassis and what I've done to hit the 80mph. If you would like to talk about this outside of here let me know in your response and we can go from there.

[@RCKnockout]

Yeah actually I can’t really remove the battery trays…there’s no place to mount a battery otherwise…can’t fit one in the stock battery tray due to the center mounted motor…those are all great tips though! 😉👍

[@justaguyrc6303]

@@RCKnockout I see what your talking about your battery trays not being able to be removed due to the motor being in the way of the original battery location. Ok, weigh your battery and take that number and add that much tire weights to the other side battery tray to balance out the chassis. That will also help assist in keeping a lower center of gravity. Second is remove the front splitter, foam and duct tape. Get these parts to mirror the Traxxas truck and install them on the front. The front air dam will allow the airflow to go up and over the front of the truck and acting as a splitter and pushing the front end down. Any airflow that gets in the body should escape out the rear, because you removed the rear tail gate section of the body. That will help you with air flow and the air to escape from under the body and shouldn't create pressure to push the front end up. See parts list below. 7437 - Front Skid Plate traxxas.com/products/parts/7437 5411 - Revo Wing Mount traxxas.com/products/parts/5411 5446 - Revo Wing (x2) traxxas.com/products/parts/5446 Look up my video "Traxxas Slash road to 80mph part 2" that shows my chassis setup with my new body.

[@RCKnockout]

@@justaguyrc6303 I’m definitely gonna check it out…I don’t think I wanna risk taking that front splitter off though. Before I had the splitter on it was crashing every single time I tried a speed run. The front end would get super light…I think the splitter is definitely beneficial….I think the wing I have installed is working pretty good too…

[@justaguyrc6303]

@@RCKnockout I put up a third video and got 84mph as a new PB. I hope my videos help you in your road to 100mph. I'm going to try two more times to hit a faster speed this weekend when I get my new wheelie bar and 6S battery. I'll post the results, so you can see them. Hit me up if you want to talk about this stuff.

[@RCKnockout]

@@justaguyrc6303 appreciate the recommendations! Hopefully you’re able to top your current personal best 🤞

[@timmongar6250]

What size battery you running

[@RCKnockout]

6500mah 100c discharge 6S Lipo

[@toolbaggers]

4:21 🤭

[@ikonic189]

try locking the diffs u may get more speed by just doing that

[@RCKnockout]

That probably wouldn’t be a bad idea….or at least lock the rear diff up….it definitely is more likely to go straight since it’s distributing equal power to both wheels

[@justaguyrc6303]

If you look up my video its called Traxxas slash 4x4 road to 80mph. My intensions are to helpful and help you get to the 100mph sooner.

[@RCKnockout]

Appreciate it! I’ll have to take a look

[@theworry184]

Should think about getting a gyro or a controller with a gyro built into the receiver Dumbo RC really good has gyro in the receiver and range is unbelievable

[@RCKnockout]

I need to look into those. This one does actually have TSM though

[@theworry184]

@@RCKnockout Dumbo RC Is pretty cheap controller and receiver It comes stock with a gyro in the receiver it is 6 channels

[@theworry184]

Or look into turning it up

[@RCKnockout]

@@theworry184 actually I usually run it off or very low. It makes the car super jittery at high speeds trying to compensate for the fishtailing

[@RCKnockout]

@@theworry184 how cheap are we talking?

[@Fabworx_rc]

The diffs

[@802_basher2]

Mine does 38mph with 2s 2600 70c lipo 3351r vxl system

[@RCKnockout]

Nice man! That sounds about right

[@keekay_cg32c7.r2]

Run MIP shafts they are good for 8s lipo, and you really should change that body which isn't aerodynamic try a Toyota gt1 body 8th scale from delta plastics and you don't need a wheelie bar you should remove the springs and use bump stops so it doesn't lift up, lastly get some contact foams and lock front and rear diffs and you should be good! Good luck

[@RCKnockout]

Thanks for the recommendations! The goal is to reach 100mph with a Slash body installed though. Yeah I’ve heard the Mip driveshafts are basically indestructible. I have thought about locking at least the rear diff

[@keekay_cg32c7.r2]

@@RCKnockout don't just lock the rear if you try if not it'll slide out very easily that's why you need to also do the front so one tire doesn't spin faster than the other. You can actually try with the slash body, I recommend taking a Remer and putting holes underneath where the fenders would be and maybe make some scoops but make them functional if you do! If you don't mind me asking what kv motor you got? And gearing?

[@RCKnockout]

@@keekay_cg32c7.r2 gotcha! 2200kv Axial Yeti XL motor. 34t pinion - 54t spur I believe…it has plenty of top end speed to reach 💯

[@keekay_cg32c7.r2]

@@RCKnockout okay so since the ratio for a slash 4x4 is 47 12 your transfer ratio is 3.9 which is very high torque your gearing is too low. Try 34 pinion and 38 spur mod 1 gears since you have a 2200kv motor it's high rpm and with a 38 spur you'll get enough torque without the esc cutting off just make sure you run the power hobby Cappack for smooth runs it helps the esc alot besides that chuck a set of foams lock front and rear differentials and you should be fine

[@keekay_cg32c7.r2]

@@RCKnockout also the front spliter may be an issue with aero try referring to the 100mph slash traxxas made a while back they list the parts to make a front spliter

[@rcpd3157]

Put a windshield in the truck.

[@RCKnockout]

I might have to start out with a new body and take a different approach

[@rcpd3157]

@@RCKnockout I think you are good with what you have, just make one. Look up RC guy Garage windshield mod for a Mojave and do it to yours. Earl Moorhead did it to. A new body would not hurt of course, but I think I would experiment with that one first.

[@RCKnockout]

@@rcpd3157 thanks for the tips! I’ll have to go look for those videos!

[@Jedan1806]

You should get a new body

[@RCKnockout]

You’re probably right about that

[@EJ-74]

I think a windshield would help a lot It will keep the wind from ballooning the body and causing lift 80mph though not bad at all bro 🔥👍✌️

[@RCKnockout]

Thanks man! No doubt you’re right. I might need to start over with a new body or put in some type of windshield

[@mitymike]

You should not have cut out the windshield or the side windows

[@RCKnockout]

Yeah probably shouldn’t have. Might have to get a new body and try something different

[@darrylsjodin3962]

Maybe try copying some of the Traxxas X01 areo and suspension stuff. They obviously figured it out😊

[@RCKnockout]

It does have the xo1 front splitter and canards. Don’t have anything for the back though

[@Earle_stoeckel]

He should just put a huge motors and like 16s in it and it will go 100 no prob

[@RCKnockout]

It has the power to reach 💯. It doesn’t have the downforce and aerodynamics it’s gonna need though

[@lrighttobewhite]

Steering helps.....

[@johnnykat21]

I think you definitely need to find a better road/surface to run on. That road is killing you.

[@RCKnockout]

Yeah a smoother road would be nice…just haven’t found a better one yet

[@2ndgengasser105]

Those are the worse tires for speed runs u need grp s2s slicks

[@RCKnockout]

Thanks for the recommendation

[@samcourtrc6767]

Sorry bro I haven't been watching thats what I have bro they seem to give a good reading

[@RCKnockout]

That’s alright man…no worries…I think it does seem pretty accurate too

[@samcourtrc6767]

RC Knockout they same to be bro at least she is near there now to that 100 mph it has loads of power just getting it down bro she just lights the wheels when u hit that trigger

[@RCKnockout]

@@samcourtrc6767 yeah I really have to have everything come together at once to get a really good top speed pass.

[@samcourtrc6767]

RC Knockout look forward to it bro

[@RCKnockout]

@@samcourtrc6767 yeah me too! Thanks bro 😎

[@SonsofRcEdmonton]

dude get an old piece of carpet for your burn out

[@RCKnockout]

I was gonna get a new piece but an old piece might be a better idea lol 😂

[@jdubbfam37]

Blacktop or asvault will smokem

[@RCKnockout]

You’re right about that

[@brimlife6622]

Unfortunately u are not gonna get top top speed because of the battery tray... design flaw in the rear end of trays ...way too long tires constantly ballooning an blowing out or just continuously rubbing an slowing you down ....speaking from my own Traxxas slash that I have the same battery trays... Need to draw a line on each one an Dremel at least half of inch from rear end of trays to give tires more room ...best with grp S 5-7

[@RCKnockout]

Really? I’m running belted tires. I’ve never noticed the tires come in contact with the battery tray at all actually

[@brimlife6622]

@@RCKnockout put the car on top of it RC stand on top of something hold it with one hand and then hit the throttle gradually accelerating until you're Full Throttle if you make it that far I promise you unless you're running grps it doesn't matter what Taya running at high RPMs they're going to hit the battery tray look at your car the gap on the front of the battery tray is wider than the one in the rear could be a different battery tray but the slash doesn't have a lot of aftermarket parts so I'm more than likely correct that it is the same battery trade that I am using

[@RCKnockout]

@@brimlife6622 I could be wrong… I’ll have to try that out sometime. The next run I’m gonna be running different tires though

[@brimlife6622]

@@RCKnockout I was actually just thinking you might not encounter this problem I believe you stated you were just now trying to achieve a hundred plus that being said Pirates Who Don't Feel like your motor and ESC is going to give enough power to balloon the tires big enough to hit the back end of the battery tray if you're running the stock system I have the 1260 KV Mamba Monster 8 with 8s catpack but just put the car on top of something and going to throttle if your motor has enough power is going to balloon those tires until it hits the back end of the battery tray and then it's just going to shred the tires until it pops I found this out because my controller died before I got a chance to shut the car off and it rocking it off my kitchen table and eventually blew the tires that's how I found out the battery tray on the rear end doesn't give enough clearance to achieve high speeds but like I previously said you're not going to encounter this situation until you achieve those speeds or actually give the throttle enough power

[@RCKnockout]

@@brimlife6622 so I could possibly reach 100 without having any issues then. Thanks for the info! 👍

[@thatdudesme2]

Use wd40 on your tires and you waste rubber

[@RCKnockout]

Wd40? That’ll ruin all of my grip, won’t it?

[@thatdudesme2]

@@RCKnockout Sounds like it would, but after a couple minutes it makes them super sticky

[@RCKnockout]

@@thatdudesme2 after running them for a couple minutes with wd40? What does the wd40 do?

[@thatdudesme2]

@@RCKnockout Try it on a old tire . It makes them tacky you don't need to burn out and waste tread .

[@RCKnockout]

Yeah that’s definitely a good idea!

[@rngftf4278]

balance ur tires

[@RCKnockout]

Don’t know how to do that?

[@sshelton3000]

BALANCE YOUR TIRES

[@RCKnockout]

Not sure how to do that