Does Weight Make A Difference In Go-Karts?

[@tomventers]

Ignoring the weights your consistency is insane

[@D45HEY]

@@tomventers thank you very much sir

[@meninoxico]

I was thinking the same thing.. astonishing stuff.

[@hoineenietjij3331]

As a Dutch championship driver, the lighter weight driver is always faster. However driving on light weight is a harder driving style because of the less mechanical grip. However a good driver knows how to counter this by using your weight to lean with your body to the outside to provide more grip on your outside tyres. In what I have tested myself, every 10 kg is around 3/3,5. Tenth difference on a sub. 50 sec track.

[@David_Ashurst]

You should try this on an inside track with a grippy floor/ slippy floor mix. A lightweight has much better chance of dive bombing and pulling away without incident on the grippy tight corners of a wooden surface. Not to mention uphill ramps after a corner! Electric karts minimise this issue somewhat over the lower torque petrol versions. Ive seen lighter drivers beaten by a heavier driver when they get a marginally slower electric kart because the weight-related performance difference is so small. It just seems huge on those grippier sections where you just get gapped on the straight out of the hairpin even though you carried more momentum. That said it’s definitely easier on the slippy bits being heavier. Just harder to overtake if the person in front has closed off the inside! Ive found about a 0.5 second difference on my local track (43 sec average lap). Its the overtaking benefits on a tight track that really kill you as a heavier driver. Good to see you do it with 30Kg. Its so marginal you really need a good difference to demonstrate it.

[@D45HEY]

@@David_Ashurst there is 100% different scenarios where weight can play different roles and to try and get that all in one video was going to be potientally overwhelming for some viewers to really understand exactly what was happening could lead to contradicting data etc so as a start i thought the best way would be the way we have done it which could lead on to part 2 part 3 and so forth Indoor track will more then likely be next as you said you could lose time on the up ramp but as my good friend issac newton said “what goes up, must come down” so would you gain back on the down ramp what you lose on the up ramp Electric karts in my opinion are brilliany for leveling the playing field i have about 10-12 people i practise with all different weights but same skill/talent if we are in petrol everyone has thier driving style to maximise thier weight advantage/disadvantge in the electrics we all do the same thing and its bumper to bumper racing but i know what you mean the accelaration you lose out on being heavier doesn’t out weigh the extra corner speed you have so can be frustrating but i am determined to find the answer to what excatly the difference is so that there is almost a data chart of comparing a lap time with your friend no matter the weight e:g this video if i was racing you and you weigh 100 kilos and i am at 70 kilos and you was half a tenth off my lap time then you would be quicker then me across the same weight and works the other way round (which what made me do this video) people telling me i only won because of my weight but are an extra 15 kilos and are 4-5 seconds of the pace No self accountabilty and if you don’t have that you will never improve You are right though tighter track doesnt allow to carry momentum to get past someone as you scrub of speed with steering input so i do get it, can be frustrating but in my experience it can be done with careful planning and excuting it from further back which seems stupid but catching them by carrying more corner speed that later down the straight could get you side by side may be enough to get the job done As for the 30kg beong marginal you are correct i originally wanted 60kg but the good people at buckmore are not going to allow me to have bumpet weights just sitting on my lap and i dont blame them health and safety would have a field day if one of the weights come flying off my lap

[@David_Ashurst]

@@D45HEY 30kg is fine. I meant the difference in speeds between light and heavy (on electric at least) is marginal. 🙂

[@D45HEY]

@@David_Ashurst i agree but how much by i am going to find out, part 2 will be electric, part 3 will be rain part 4 will be a diet plan

[@David_Ashurst]

@@D45HEY Sure. Good luck. Will be interesting to see your results. I checked out some best same day qualifying times on BIKC 2023. Heavyweights 52.37 Middleweight 52.04 Lightweight 51.95 If you assume these are pretty good drivers consistently lapping then its a good example of what im saying. There is a marked difference of nearly half a second overall on a lap. If you factor in the types of gains eg take-off speed then you can easily see the overtaking advantage for the lightweight drivers. But hey, thats why we have weight classes. So its all good.🙂

[@D45HEY]

@@David_Ashurst done half my job for me for the next video 😂 those lap times are so close so would be good to see where the advantage/disavantage would be should be easy to find as you said nearly half a second Yeah would be good to compare lightweight to heavyweight overtaking advantages as well so will defo bring that to light in the next video, appriciate the input 🙌

[@crisbivolaru819]

Very good video man simple and straight to the point also very usefull ..as a big guy at 105kg and 6.2" i was searching for a valid excuse for why i still lose races over my 60kg friends and you didn't help me much :)...in my experience if there is a standing start i usually lose 2/3 positions because of the slow start and then i lose time again trying to overtake and regain the positions..you should experiment what the weight penalty is from standing starts and not only on pure pace . Cheers i really apreciate your work

[@D45HEY]

Thank you @@crisbivolaru819 so i actually have someone in my group similar build to you and he says this about pulling off the line but he is good enough to be able to keep up with the rest of us so it pretty much evens out however off camera my group wanted to see the difference in battling and so we done it with and without the weighted vest, without the vest, i can hold my own i pride myself in being ultra efficient in my racing with no/minimal mistakes etc etc i’m quite comfortable leading the pack of my group its not easy but i dont break in to a sweat now let me tell you what it was like with the vest, i was defending for MY LIFEEE!!! Had to force them in to mistakes or back the pack up so they start battling behind me so i could run off in to the distance i really had to concentrate make sure everything was caculated i can’t tell you the outcome as i had to abandon that and get back to being consistant to record data but i am in the making for part 2 which is indoor electric and so i will be looking in to the starts as well

[@augustodufloth1578]

Great video. Some caveats: Added weight is not equal to downforce. Although the effect is similar (more load on the tires), the whole system is different. Weight changes your inertia, while downforce does not. Other things to consider: Although you increase the vertical load with heavier weights, you also change where your peak friction coefficient is. So, when you're heavier you have less slip angle to work with. You don't have much wiggle room on the edge of the friction circle, if that makes sense Another issue is the ballast itself. Many series use ballast, which sits very low in the kart. Although you might have the same mass as a heavier guy at the weight limit, your Z cg (how high your CG is from the ground) will be lower than who doesn't carry ballast. For instance in F1 Zcg is so sensitive that a 1mm drop in vertical CG is equal to -0.1s. So many factors that affects the performance... And your insight on the last chart is more likely. There's a reason many series have a minimum weight of 85kg. It's the sweet spot. After that the performance difference increases dramatically

[@D45HEY]

weight vs downforce seems to be a reoccurring comment that weight is not the same as downforce just to be clear, it is what started the thought process behind this video and maybe I wasn't clear enough all I was concentrating on is the similarities with load on the tyres friction coefficient so lateral force was my main issue would it overcome the tyres with centripetal force but i felt this was over thinking it and sometimes to find the answer is to just get out there and do it its not like I'm asking to much there are people out there who race at this weight perfectly fine (I race with someone who is 140kg) ballast so why I went with the weighted vest is because I wanted the weight around the top half of me now I'm not saying all fat people are built like this but most I have encountered in my life they have normal-ish sized legs and a bigger top half wanted to try and keep it like for like because if not I could of just thrown a load of ballast under the seat keeping CG low as for the 85kg being the sweet spot I think you're right and I will get around to graphing this out appreciate the comment

[@SueMyChin]

I know it's harder to do, particularly at Buckmore but you should try and test how the weight effects top speed. I race my cousin who is about 4-5 stone lighter than me in North East where we have a few tracks with long straights. He will gain about 4-5 kart lengths over 100m consistently. The track layout massively effects the impact of more weight.

[@D45HEY]

Something i would 100% look in to personally think both weights would get to top speed but get there at different times (heavier taking longer) something i had to adapt to when having the weighted vest on, trying to keep the exit speed as high as possible to give me the best chance of getting to maximum speed as quick as i can, only one way to find out…..

[@craigm6921]

Yes. Thank you for attending my TED talk.

[@nassarahmmad8057]

Great video , very informative . The time difference very much depends on track layout I would think . I'm a regular at Daytona MK and it's a power circuit so it benefits lighter drivers much more than Buckmore .

[@D45HEY]

Thank you, Agreed the time loss/gain is going to be track dependent i did take this in to consideration when picking where to run this test i went with buckmore as it is a well known track with the added bonus of sector times without me sitting and working it all out (emailed to you at the end of the session with lap times, position, laps etc)

[@TeddyOn]

Really enjoyed your perfectionism. Very nice video

[@D45HEY]

Thank you

[@MilesNJRacing]

Around Buckmore I notice that sectors 2 and 3 are where heavier people lose the most time, because it's mainly straight line speed and that uphill run to the cafe. No matter how you come off Garda (the right hander) you can't match a junior up the hill it's impossible. I don't visit there that often but at 68kg I generally do low 49's on those 30 min practice sessions. My sector 1 is usually 20.0 which I hear doesn't happen often in practice, but the kids can be like 3 tenths quicker in the final sector being like 20-30 kg lighter. On the subject of grip, there's more lateral grip if you're heavier (as in mid corner) but if you're lighter you can brake later and of course come off the corner better because of physics (less weight the brakes to stop and for the engine to pull). I find weight disadvantage is lowered substantially with electric karts because of the high torque (it's still there but it's a lot less), but this is why in proper racing they use weight limits because otherwise you'd have 40kg kids entering adult classes and having the time of their lives. But yeah there's a reason why the Buckmore lap record is held by a junior and not an adult.

[@pillowhead4000]

It’s also worth noting that these karts are so heavy, it’s not the same as a proper racing kart which are far far lighter! I recently ran with no lead on my kart instead of the 15kg I needed and could lap best part of a second quicker

[@D45HEY]

The weight of the Kart doesn’t matter in this test

[@pillowhead4000]

@@D45HEY I think I disagree that it’s irrelevant. If the total weight is about 220kg, which is not heard of for a hire kart then 30kg is less of a percentage of the overall weight than on a kart that weighs 150-160kg total. Just my thoughts

[@D45HEY]

@@pillowhead4000 so all we are trying to find out does weight of a person make a difference so we have 2 karts both 200 kilos (for example) and 2 drivers one weighing 70kg and the other weighing 100kg then they go out and set lap times and it comes back with a 0.4 gap whats the difference between the 2 that made that time difference? It would be the weight of the driver Would it be a different result on a lighter kart? Possibly a bigger or smaller gap but the principles are the same

[@MrSpanks]

Great demo! Before watching, I was skeptical as to how controlled your 'experiment' would be, but, with lap time SO consistent, the results are pretty clear! You need to do the same in the wet now!!

[@D45HEY]

I was skeptical as well i wanted it to be fair as i have nothing to gain or lose from the result so going in to this i said to myself i wont leave any stone unturned but i soon found out i just stepped on to brighton beach and the more i looked, the more i needed to figure out being consistent was the biggest factor to me that had to be right and then being able to adapt to the weight and change driving style to suit before doing timed laps so no time was left on the table I am currently planning more parts to this weight subject so more parts to come (wet, indoor, electric etc)

[@ThunderBassistJay]

Big like!!! Your lap times are unbelievably consistent. 🏁 Just weight is one factor. To my opinion weight distribution is more important. If the seat is adjustable, I tend slide it forward. Being rather tall, this isn't comfortable, but it does reduce understeer considerably. Apart from weight, the size of one's body may matter at higher speed.

[@D45HEY]

Thank you very much sir, i agree with weight distribution thats why i wanted a weighted vest as i feel this would be the best representation instead of some ballast just slapped on the the side of the go kart The kart i was in wanted to oversteer more then anything but this instantly stopped with the weight and the front end became alive i recommend anyone in light/middleweight try it you’ll be surprised how much handling improves but of course it comes at a cost something has to suffer The size of the body i haven’t really taken much notice untill a few people said it in the comments i personally am not an aerodynamicist so i dont understand the drag coefficient of the human body at 40-50 mph but i may visit this at some point after i have finished all the parts to the weight videos (indoor electric wet) Appriciate the comment

[@ThunderBassistJay]

@@D45HEY Body size may matter from about 50 mph. Tall persons raise the center of weight. I'm rather tall and tend to use my upper body to nail the outside tyres to the tarmac. So I'm often leaning slightly to the outside of the curve. Glad IO discovered your YT channel! 👍

[@D45HEY]

@@ThunderBassistJay defo something i will look into at some point, would have to learn how to drive basiclly leaning down so that will be fun Appriciate the support

[@mentalmikeracing]

Great analysis! From my point of view, It all depends on the track configuration and the kart power. Being a 95 kg driver i often find myself racing 70-80 kg opponents. On a 1 km flat outdoor track with a 13 h.p kart i lose roughly 0.3-0.4 per lap, but on a shorter 400-500 m indoor track i am only 0.1 slower. The good part about being heavy is when rain hits, i find myself being one of the quickest due to my heavy ass sticking to the track better :) The worse part is on tracks with uphill sections, where the time loss is much bigger.

[@D45HEY]

@@mentalmikeracing completely agree its going to be track dependant on how much time you lose, i went with buckmore as i think it has the best of all tight hair pins with a down and up hill section, i will do a part 2&3 being indoor electric karts and then in the wet as much as i hate racing in the rain its all in the name of fact finding

[@omg_atom]

In Club100 the lightweight drivers are consistently around 0.4s a lap quicker than the heavyweights and there's a 12KG minimum weight difference between the two so that works out at 0.03s per KG if it was linear (agreed though that it probably ramps up aggressively the heavier you get)

[@D45HEY]

So that confirms sort of what i was saying, i will do a test with weight increase in increments and plot a graph to confirm exactly how it would be as i think this would be a good reference to work out which 2 drivers would be quicker if the same weight

[@greenman717]

I raced my friend on electric indoor karts this year. Our weight difference is huge but I know we're very very similar in speed from real life and virtual racing. The gap was very close, only 0.1-0.2s and I didn't find myself reeling him in on the straights at all when I followed right behind him for many laps. I found it to be a hinderance being so light because my kart kept hopping like crazy through high speed corners because I didn't have enough body weight to shift to the outside rear wheel

[@D45HEY]

@@greenman717 i done a video on the electric karts, i was super againest it as i prefer using crushed dinosaurs to race i like to get the fuel in to my veins but after that video its exactly as you said so close with the people i race with different weights but same skill in all racing we have done (from street racing to sim racing and everything in between) that i actually prefer it, my only problem with electric is the front end has a “numb” feeling so harder to gauge what the kart wants from me

[@greenman717]

@@D45HEY Much like yourself I prefer petrol but my friend and I decided on electric for a more fair duel. I thought they were some of the best feeling karts I'd ever driven, the amount of grip was insane but this was in Germany not the UK. My only problem with electric karts is that the acceleration makes karting far more forgiving. It's less about maintaining speed and sustaining as many revs as possible.

[@D45HEY]

@@greenman717 yeah i agree its easy to recover from mistakes which gives less opportunity to the cars behind to capitalise on it the electric karts i have raced on have a boost button that you can manage so you can just recover using this but makes it different which is fun i will have to try karting in germany when going to the ring

[@tattiepotato6613]

i think it purely depends on the track, my local outdoor track i am faster because im lighter and this helps with the long straights and acceleration but my local indoor its alot tighter and it all about carrying momentum so if your heavier it makes the kart more planted and you dont slide as much which helps with keeping the momentum

[@z4rroc458]

Very interesting video i stumbled upon here. More weight = more load and therefore more mechanical grip until a certain point (even if you increase grip, you also increase mass that needs to change direction at some point tire cant handle more) Less weight = better acceleration and deceleration*(another edit: maybe because of seating position and more load to rear heavier can mitigate braking difference) (we can see that in the sector times) Meaning heavier Drivers should aim for higher minimum speed at apex to utilize their grip, while very light drivers can*(edit or rather have to) sacrifice some mid corner speed to spend more time at full throttle overall. With the weighted vest you probably lost all this time in S3 because you had to accelerate away from the hairpin in the beginning of the sector and it was open throttle until finish line. Good Content, Good Driver +1 sub

[@D45HEY]

Exactly that, going in to this video i thought i would try and find the benifits of being heavier but knew i would have to battle with inertia in cornering and this is what i had to overcome and adapt to while learning a whole different driving style to make sure i get the best out of it as for moving the seat, Kart NO 8 felt horrendous it almost had a mind of its own the brakes were poor the engine felt lazy and it was almost like i had trolly wheels for the rear as it would just oversteer randomly with no warning but when i put the weighted vest on it felt like a completely different kart, handling wise had a pointy front end and the rear was stable so i can really just focus on getting the best out of it sector 3 was the worst as its up hill had to sacrifice keeping the kart stable to make sure i got the best exit speed i could up the hill, the people i was racing with was right behind me and as soon as i got to the hill they was approaching very quickly if i had to go off line (over taking backmarkers) Appriciate the support 🙌

[@JB22.]

I’ve noticed that as a heavier driver it’s far more kart dependant. A kart with bad handling but good power will me miles faster than a kart with good handling but less power. I’ve seen lighter drivers so laps between two karts and set laps within a tenth but when I drive them there can be more than a second between them.

[@D45HEY]

Thats an interesting point never thought of that

[@derekdrummond7544]

Add a ramp out of a tight hairpin . With an electric kart is not too bad , but in a petrol , it's soul destroying to get left for dead by lighter drivers. On a side note , Imho , electric karts flatter to deceive as they make average drivers think they're faster than they are because the instant torque gets them out of trouble rather than being able to carry and maintain speed you learn in a petrol kart , especially a bad one 😉

[@D45HEY]

@@derekdrummond7544 petrol seems to be a thing of the past for most indoor tracks nowadays so that will happen less and less but you’re right its easy to come back from a mistake in an electric kart then it is in a petrol but if its championship driving then annoying you should be punished however its more for the mass’s and it encourages racing which can only be a good thing gods honest truth i think thats where my consistancy comes from, only ever driven petrol karts and being petrified to make a mistake as it comes at a massive price

[@shooter7a]

I raced karts in the 90s. I just looked at some of my 20+ year old track notes from a National championship I raced in KT light, and KT Heavy.= -> approx 18 kg difference. Pole time in KT light was 34.03 (I was P3, one tenth off) and KT Hvy was 34.43 (I had a motor issue, and was P17, 3 tenths off). The same driver was on pole (#97 Kevin Christenson) for both light and heavy.

[@D45HEY]

What was kevins times for light and heavy do you know?

[@shooter7a]

@@D45HEY Those were Camel's times I noted. He was on pole...both KT classes. 1999 GNs at Santa Maria. Old Track Config. KT Light Pole 34.03s. KT Hvy Pole 34.43s. I qualified P3 in KT Light at 34.14 and an awful P17 in KT Hvy...at 34.78. I ended up P5 in the main for KT light....and got crashed out of KT Hvy on the first lap. I was one of the oldest drivers in the field at 31. That was the last race I ever ran. Thinking about starting again....

[@BiggE_Huggs]

This has been a decent idea on just how much lap time I'd likely be losing jumping into a kart being 150kg. XD Definitely a good motivator to losing weight XD

[@D45HEY]

@@BiggE_Huggs 😂😂 would be massive time loss being 150kg i would set a lap time if i was you for every 10kg you lose that would help with the motivation as you progress

[@mariohuarte6104]

I feel like a lightweight car is always better provided that the setup is optimized for that weight. Maybe the combination of the stiff kart suspensión (tyres and frame bending) and the level of bumpiness on the track are a better setup for an unsprung weight closer to 90kg and thats why it feels so stable on the corners.

[@D45HEY]

@@mariohuarte6104 the more weight you have the less chance of the kart hopping up in the air and you sliding for example there is potiential for there to be a perfect weight and i will find it just a matter of time

[@ST-LEE]

Great video iv only started karting this year at buckmore and iv gone from 1min5 down to 53s a lap. I weight 103kg. And i always find its sector 3 getting up hill is when i lose speed and then position and time.the rest of the lap i can just about keep up with the faster drivers

[@D45HEY]

Dont let sector 3 put you off, i know people that have raced for years and cant improve at all because they cant figure out how to you have only just started and have shaved off over 10 seconds thats insane!!! keep at it and hopefully hear from you again with further improvements Good luck 🙌

[@rentalkarting]

love the race suit

[@D45HEY]

@@rentalkarting given to me in a tournament, has lasted me well but soon to be due a new one this one has seen better days

[@IsoNekoBaka]

Curious - Where was your seat position for this? I often feel I have a double dip of "Bad" being 120kgs In kit but also being 6ft 5 so having to sit at the back seat so all that extra weight is in the rear

[@D45HEY]

@@IsoNekoBaka i am 6’1 so always have the seat pushed all the way to the back

[@deadslow201]

You really can not compare weight and aerodynamic downforce/ you can not say that they have similar effect to performance. Weight causes centripetal force, aerodynamic downforce does not. Weight causes full "drag" at any speed, aerodynamic downforce causes very little "drag" at low speeds, and full "drag" only at max speed.

[@hrubin8513]

Well, weight cause less effect at very top speed, but mainly during the acceleration. Heave racer takes longer time to reach the top speed, but weight is not that much effect on the top speed.

[@savz07]

So the plan is to hit gym, do squats and calf raises only and put on 10kg of leg muscle and get to 83kg which could be the perfect weight based on your chart this = low centre of gravity which equates to lower lap times 😏😂 great vid bro

[@D45HEY]

@@savz07 get out my head, exactly what i plan to do but not the gym bit that will take to long 😂 i was thinking strapping 2 5kg weights to each leg from now on and see what happens 😬

[@lexusuk7901]

The thing is this is over 1 lap. 4 tenths down at buckmore will be quite a few kart lengths. Add that up over a race distance and you'd be MILES behind. So whilst 0.4 down seems minimal over a lap. In distance and over a race distance you'd be miles back and have no chance.

[@D45HEY]

Of course, any time loss per lap over a race distance soon adds up the video was not about over a race distance as this can vary (amount of laps/time duration) so to get an idea as what the difference would be was best to compare lap times and then its easier to caculate the difference after e:g 50 lap race would be 50x0.352=17.6 seconds

[@lexusuk7901]

@@D45HEY I guess the conclusion is that weight is a big factor. As expected. Always feels like some people think it's an excuse. Whereas in reality it isn't.

[@D45HEY]

@@lexusuk7901 weight is defo a factor the real question by how much? which was the whole point of the video i felt it was used as an excuse, i heard it be used way to much instead of self accountabilty, guys who are 10 kilos heavier max, down by 4-5 seconds a lap

[@Kallenbennettracing]

As someone that used to be 40+ pounds overweight in my class, Weight makes a UNBELIVEABLE Difference, I used to finish last every single race I did by maybe 30 seconds, -40 Pounds Now im mid 😭.

[@BarnsFacts]

Really good vid 👌

[@pierregabriel7209]

I mean yeah you got a point but this is specific for an outdoor and high speed circuit. The end result will be insanely different on an indoor track with with frequent breaking zone and accelerations Great video tho :)

[@D45HEY]

Have part 2 and 3 coming soon indoor and wet so will be good to cross refernence all 3

[@pierregabriel7209]

@@D45HEY amazing!!

[@Zempy-o9y]

That fringe must add hp though?

[@D45HEY]

my fringe is just like your racing talent, non-existent

[@vetteltuna1716]

Being 55kg's i do definitely see the difference in acceleration when overtaking other people who are heavier, the real question is, what is the mathematically best weight? 🤔

[@D45HEY]

@@vetteltuna1716 only one way to find out, book a full day at a track and just keep upping the weight in small increments to plot a graph and see what is happening

[@hoineenietjij3331]

As a Dutch championship driver, the lighter weight driver is always faster. However driving on light weight is a harder driving style because of the less mechanical grip. However a good driver knows how to counter this by using your weight to lean with your body to the outside to provide more grip on your outside tyres. In what I have tested myself, every 10 kg is around 3/3,5. Tenth difference on a sub. 50 sec track.

[@eugene4643]

I ran Briggs Masters and had to add 40 lbs of lead to make minimum weight . When I did my final race I did a DNF for pre final . Then pulled off all the weight . WOW what a difference after 4 years 😁😁🏁

[@D45HEY]

@@eugene4643 what is 40lbs in english around 18-20kg? I bet it felt like a brand new kart after 4 years what did you prefer though ignoring lap timeswith or without weight

[@eugene4643]

@@D45HEY That's about right for weight ! . Took me three rounds to find the weight I needed so slowly got use to it ! At one point I kept putting left tires on paint and eventually the lack of weight grip helped me into a off track excursion 🤣😂 Was about to buy a new kart and then it all went bad . But still do rental races and the throttle leg not what it use to be ☹️ This weekend was 1st time in 10 years that have won back to back races !

[@robertct06]

I will say active aero is definitely the best weight. Get to choose how much artificial weight you put down. Wish there was a way you could implement that. You’d get a ton of weird looks though 🤣

[@D45HEY]

@@robertct06 how did i not think of this!!! to do this off the top of my head i would need someone on every corner entry to throw me the perfect weight for that corner, i’ll catch the weight before going in to the corner and then as i come out the corner throw the weight out the kart we will be setting lap records in no time 😂 bring on the weird looks

[@charlesadams455]

i definitely thought it would be a bigger gap with that much weight

[@D45HEY]

i was surprised by it as well rough caculations before hand i thought around 1.2-1.3 loss obviously i need to go back to school with maths like that

[@serious625]

yo my g,yh sick video n good explanation,im enjoying the content..😎

[@D45HEY]

Appriciate it 🙌

[@johneatonsr665]

I was at lake side and my son was fastest he 69 kilos I am 147 kilos he was 2.3 seconds faster on quickest lap

[@btracing]

Very cool video! Now do it in the wet 😁

[@D45HEY]

@@btracing rain is the one i am looking forward to the most for future videos Part 2 - indoor (electric) Part 3 - Rain Part 4 - outdoor with weight in increments Part 5 - adapting driving style to weight

[@btracing]

@@D45HEY subscribed 👍

[@D45HEY]

@@btracing appriciate the support 🙌

[@gussay]

⁠next time put on a fat suit too for all the lovely bad aero effects of being big and tall

[@D45HEY]

😂 i would do it in a T-rex suit but i think the health and safety team of buckmore wouldn’t be impressed

[@Slowcarfastbeans]

Giraffes make for good kart racers

[@D45HEY]

😂😂 Do you think i am wearing a G force suit?

[@MartinAndrasi]

top speed obviously make diferend

[@Aledefii]

If 4 tenths is nothing for you, it means you're not very into racing.

[@D45HEY]

I am going to assume maybe you skipped parts of the video so i’ll clarify my point “4 tenths is nothing considering the weight difference” when people use weight as an excuse for losing its normally by 3-4 seconds a lap so in comparison 4 tenths is nothing

[@gussay]

@@D45HEYgo do a race with the fat suit on… that 0.2 in the first sector is you losing 1 or 2 places every lap

[@D45HEY]

⁠@@gussayare you claiming the aero of being bigger costs 2 tenths in the first sector? A very bold claim i would start with some self accountabilty and question your driving before i started making stuff up unless of course you have credible evidence

[@gussay]

@@D45HEY I wasn't claiming 2 tenths in the first sector... YOU did in your video in the stats @10:46.... and that is without any extra aero disadvantage of a taller person may be taken into account. You showed 0.35 secs to be at least 20 meters across the line @10:00 So in that first sector someone pulls 10 to 15 meters on you (that 0.25 loss that YOU showed in the first sector) then you are going to lose places. And you are NOT factoring that into your experiment. As far as MY self accountability... I am fine with my record. I raced direct drive two strokes. No slipper clutches and really bad low end torque... For a kid who went from 5' 6 to 6' in two years ( 14 to 16 yo ) and went from winner to also ran over that time... You think i got worse with experience?

[@D45HEY]

@@gussay ok let me start again so i understand what you’re are saying, when you say fat suit do you mean the weighted vest? Or are you saying fat suit because you think it doesn’t count because im not big so dont have the aero disavantage? You said a tall person i am 6’1” is that good enough? As for you saying try and race with it you would lose a place in sector 1 alone i did race with it you can see a little clip of it at the very end of the video but that was not what i was testing

[@downy8586]

All of the unwaited laps you were missing every apex apart from on the straights so this is pretty ambiguos tbh...

[@user-rs8zg8ey2b]

In a corner, the extra weight does not push down on the tires, why does everyone get this wrong? Under braking and acceleration in a straight line it does, but now your hindered by the extra weight. Just because you can "send it", doesn't mean it's quicker, as your times report that.

[@D45HEY]

@@user-rs8zg8ey2b what happens to the tires under braking and accelerating?

[@user-rs8zg8ey2b]

@@D45HEY In a straight line, they have more grip, but they have more load to carry too. How often do accelerate in a straight line AND are tire grip limited? For braking its the same. Ask yourself, how much is straight line braking? Use a G meter (a $24 flight controller and blackbox it) and check the real results to see how much more the weight helps or hurts. We already know it hurts the lap time.

[@D45HEY]

@@user-rs8zg8ey2b do you know what trail braking is and how it works?

[@user-rs8zg8ey2b]

@@D45HEY í have 2 world championship titles, 5 national titles, so, yes, I know. Best driving book I have read is: The soft science of road racing motorcycles, it teaches high speed thought. A used copy on eBay are about $6.

[@D45HEY]

@@user-rs8zg8ey2b ok well one of the benefits of trail breaking is using the weight to gain grip a quick google search will show you that “Weight transfer Trail braking allows you to manipulate the car's mass to help you enter the corner. This helps you achieve more grip, which leads to more control and acceleration”

[@coolmus1]

F=ma. QED