FANTASTIC!!!! Very Understandable for a Newby!!!

You are the perfect teacher for KZfaq videos. I could watch your videos ALL day long. I always learn something with ease.... thanks, my brother. Much ❤️.

Finally! Someone who explained diff oil weight in an easy to understand manner. Thanks.

I'm in the process of putting a Felony front diff into the rear of the felony (and the 15t input gear to match) and this video helped me understand the workings of diffs and fluid. I'm sure i can tune the diffs to get a little less uneven tire wear, but the main thing is being able to run 4 of the same diameter tires, so i can get more tire options and rotate them as necessary. Thanks, big time!

You’re a great speaker, you broke everything down to where it was easy to understand and follow along. Thank you . Your channel has taught me so much knowledge I didn’t even knew i needed to know by accident also

Thank you very much.. great video and very valuable information

Amazing video, made me shim y son’s typhon right away (overdue but salvaged) thanks a ton, going to watch more of your stuff (and subscribe)

You have explained this perfectly for me to understand!!! I knew a little from the real 4x4 world but I never had to worry about ballooning my 1978 ford bronco’s tires

Best differential explanation I've heard yet, great video! thanks

Brilliant every time. Perfect explanation without talking at or down to people. Thank you so much for sharing your obviously vast knowledge.👍👍

You Rock Bro! Good job on all your videos. Easy to understand nice easy pace. Good stuff.

I have to say I've been terrified to get into the differentials on my trucks because it scared me, But after watching this video and the way you basically teach us how they work and explain everything ill be working on mine as soon as I can get the oil. And I never really subscribed to any of these KZfaq channels But after the 1st video I watched of yours I actually subscribed, I like the way that you explain stuff And I'm happy that I come across you just by chance!!

These one on ones has helped me out a lot. I literally just ran into a center diff problem. With this video, I fixed my problem within 20 minutes. Thanks A.J, you rock man!💪🏾

The world gone nuts. This dude deserves 1M subscribers.

I picked my two kids up some lower end rigs for mild bashing this Christmas. We've had such a good time over the last few days that I've decided to grab myself a Granite BLX. While I wait for it I've been watching videos on disassembly of certain parts to prepare for the inevitable rebuilds and maintenance. Trying to educate myself really, This video has been fantastic, sub'd! Thanks so much. Seasons Greetings from Nova Scotia!

Absolutely stellar video. As someone just getting into the hobby I'm extremely appreciative for this video!

U have got to be the best man with explanations.

You are a very talented teacher. Thank you so much for this video!

Great presenter of all your information. I really appreciate that.

Love this 101 series. It helps a lot.

New to the hobby. Great info for much greater comprehension. Thank you for your content and sharing of knowledge! Subscribed, and a new fan! 8)

OMG!!!! I'm glad I just found this Video!!!! Thank you for explaining this so clearly!

Great video. Thanks for the explanations.

Awesome video once again 👏. Thank you 😊!

Excellent video, thank you!!!!! Love the content

Hello from France 🇫🇷 and thanks a lot for this explications ❤😊

Great information. Glad I found your page.

Love your content AJ, really good stuff and well presented. You are my favourite channel and first to go to when I fire up KZfaq. Looking forward to your take on the EXB diffs. They have caused me numerous headaches. Cheers, Ian.

Very clear, thanks a lot. I'll try to follow your steps when I will decide to open mine. I'm new in RC world. I had my first RC car a month ago, a MJX HyperGo 14210

I definitely needed this vid. As always very informative.....I didn't have a clue.

Awesome in debth . Very helpful!!!

Thanks for explaining 🙂

Great video man.

Good stuff!!

Most tracks are usually dusty and slick and its tricky. The track changes throughout the race weekend and depending on the weather and humidity, the track sometimes groves uo and turns into a hard sticky concrete like surface and u have to have be prepared and have different diffs set ups on hand, and ready to drop in, and have tires on hand... Sometimes we have to race in the mud and u have to be prepared because the surface changes from morning to evening and from one day to the next

Perfect vid👍

Excellent work on the videos. I’m new to the rc hobby and love how well you explain everything. Is there a teaching background? Really well instructed/teached. Thank you for these 101 videos.

Thanks AJ🤓

Thank you for this great lesson! I would like to know why some diferentials use grease, and considerations about grease and oil diffs. Thank you!

Do you have more on locking the defs? Your video’s have been very helpful

Great video Sir. Respect from Vietnam. Hope you will make a video about the Vorteks diff

I have always put just grease in the rear differential with the thinking that the power will go to the rear first (the path of least resistance) and thicker oil in the front differential. I would love to hear your opinion on this🤠

Your Traxxas UDR does have a differential (sort of) it's just a spool type (permanently locked). Then there are locking differentials (you can switch between open and locked), limited slip differentials and open differentials. There are different types of locking (cable, pneumatic, electronic) and limited slip (Torsen, Eaton, clutch) differentials but open and spool types are for the most part very similar (the differences are in the metals used in the manufacturing, how many ring/pinion gear teeth and the number of "spider" gears). If I remember correctly, the first working differential came out of France, some French mathematician was trying to design a watch or clock - something to do with the measurement of time.

Keep in mind I'm an amateur at the hobby. Also, keep in mind my rc's are offroad cars - Stampede 4x4 and Losi SCBE (4x4). I assume even a little oil, even if very light, helps with preserving the longevity of the gears? Kind of like in real cars? I haven't replaced or checked my diffs since I first bought my cars. I can tell the diffs are very free. And I like drifting w/ them on loose dirt. That's how I thought they were meant to be, but I guess not. I'm definitely going to have to check my diffs and at least clean them out and put oil in them. Anyway, I'm also wondering why change the properties at all, since diffs were invented to prevent exactly what you're saying in the video that you want. If you want the wheels to turn 1:1, then why have diffs at all and not simply a solid axle? Like the car that you showed us that does have a solid axle. Then again, in my mind I'm comparing RC cars w/ real cars. The reason diffs were invented was to prevent uneven tire wear on paved roads. They also give you more control on the pavement, otherwise cars would be spinning out. The RC car hobby is certainly very complicated. I can just imagine how much more complex actual, real cars are! What do you think about using white grease as some have recommended?

Thanks 👍🏾👍🏾

awesome video, perfect explanation of diff fluids.. I have kraton 4s v2.5 with center diff and stock oils 10k/500k/10k and i am wondering if i change to 10k/500k/20k will have the desired effect you explained at the end of your video.. :)

Can you mix Oils? Awesome Vid, I really learned a lot.

Good vid brother👍 you should use some green slime or similar on o rings and a lil dab of marine grease on your outdrives. I’ve found it helps a lot I never have leaks and very minimal wear where the outdrive goes through the cup. I use marine grease on my o rings and cups with no problem and much cheaper than slime and the other products. Lucas marine is awesome 👍💪👊

Awesome video, HOWEVER, now I have a few hours of work ahead of me.

Very helpful video! I'm about to get into a Sledge front diff due to leaking out of one side coming from the factory. I sure hope it's not dry already, but it did leak quite a bit... Not sure if it came from the bulkhead ring gear grease coming out or if it's actual diff lube. I'll find out in the next day or two!

This may be a little long winded, but it’s what is required (I feel) to answer my question. For the details……… I run a Losi Ten SCTe 3.0 Race Kit. The track is an indoor medium sized high packed high traction clay track. The manual for the truck calls for……Front & Center Diff Oil of 7K. The rear diff calls for 5K. I am currently running 7K in the front, 10K in the center and 5K in the rear. Now for my question. What effect would it have on the truck to run the 7K in the center diff like the manual calls for?

great video brother. Very easy to understand the Diff fluids. Im gonna upgrads my outcast 6s to some 500K from 200k yeah i need all 4 tires to get equal power or alittle better in the front. Center diifs is laways gonna be pretty heavy. I do love 50K 200K 20K from front to rear on my Kraton EXB 6S of course. LSD diffs you do not need heavy fluids since they are LSD just so you are aware. Fluids dont really make a big differences on my EXB from what iv seen. Keep up the great videos brother.

Excellent video! May i ask what to do on a maxx and erevo 2.0 to stop frt tires from ballooning.

Hello A.J. ! Love your expert videos!! I have a traxxas UDR with open rear diff. Wondering if you could give me a starting point to change the diff fluids weight to help with rollover. I know it’s a trait of that truck just trying to make it a little better. Thank you so much

You are a great resource for us new to the hobby of RC guys my friend! I'm learning a lot of very valuable information from your videos and tutelage on maintenance, upgrades, hacks and even driving! I appreciate you and everything you do, THANK YOU! p.s. I had to order a set of new tires and wheels for my Slash Ultimate... forgot to tape over the vent holes in the rims and loaded them with sand! A wee bit of "un-balance" is the result. I taped the vents and used my Dremel and the recommended bit you suggested to vent the tires in thirds. Do you think that there is any hope that they will work themselves out and be ok for moderate driving in sand for "training"? After all, I am still trying to figure out the best way to "hot rod" this thing and learn to drive it like "Robby Gordon"! :)

Hay Ray from the netherlands i have a typhon 6s what diff oil do you recommend in the front and centre and rear for dirt ground and what for the road

Great vid AJ. Can I just ask, when you use silicon ear plugs in your center diffs, what lubricates the shims? Or do you put a little bit of oil in with the plugs?

Good video. Interesting. 1:8 pro scale offroad will never run a diff setup like that. So i think it would help to know what car and scale you are running 10/50/30

Very informative video! Just discovered your channel and glad I did. Can I ask a wee bit of advice please... I just bought a Hobao hyper VS2e, running a HW Max8G2 with 2250kv motor on 4s. I have never changed/bought diff oil before, so feeling a bit lost on which to buy. I want to change the diff oils. I have no idea what oil is in there just now, because Hobao don't provide that information. They could be dry for all I know, who knows when I comes to manufacturers, like you found out in the video. Would you be able to recommend a starting point of oils to use and then I can tune as I go, to get it to where I am happy with how it drives. I use it just for general bashing. Thankyou

Great video Thank You ! what would you recommend for a stadium type truck (1/10 scale) that only have a front and rear diff , no center ?

Do you like LSD differentials, do they work as the weight is transferred to the other side and more friction is added as they used to work in actual older vehicles?

Thanks for the video. What fluids do you use for the Arrma Felony? Thanks again.

Absolutely Amazing Video...You are my New Best Friend :)...here is my question...Running a Kraton 4S it only has a front and rear diff with a slipper clutch...would i have to treat the tightness of the slipper as if it was a center diff as far as stiffness...then do the front and rear diff oils as you explained in the vid?

Hi, off course a bit with this question but …gears 😵‍💫😵‍💫😵‍💫. What gives speed ? Small pinion ,big spur …..big pinion small spur ? More powerful batteries , esc ..what ones do what ..? too many combinations to figure out …I’m confused , therefore tend to stick with stock …but so many say upgrade , go faster etc …would love to see you discuss this subject .thanks

Great video! How would I oil my differentials to have the front wheels more planted instead of wheeling all the time? Heavy front, medium middle and light at the back??

what happens if you put a heavier oil in the front diff?

Great videos AJ. Very informative. Differentials bleed the power to the wheel with the least traction. This can be tempered by using thicker oils. So my question is, in racing why are center differentials preferred over slipper clutches if they bleed away most of the power? A slipper clutch will provide equal power to the front and rear differentials? What is the advantage to the center diff? Thanks.

Hi great video. I still cant figure out what is the best thickness of oil to use for 1/10 nitro street cars. Nimble driveing car park turns etc everything is set up for big trucks & bashers. No street racers. Any advice No centre diff just front & rear Kind regards

I hate when tires baloon.. thanks for this bro. 🙏

So if I want to keep the tires mostly on the ground I should use a thicker fluid? I purchased a kraton 6s on FB marketplace used as my first RC car and it's doing backflips on launch on 4s it's getting annoying I want to drive the car so I can get used to it but I can't like this cause it's always flipping

helo sir i just got problem sometime my gear got stuck cannot spin whats the problem is that thanks for the info

Any Chance you will have a look at the Corally Kronos XTR in the future? Especially a comparison to the Kraton EXB would be amazing. Do you have Patreon?

Can’t see the newest video on the lsd diffs

Wouldn't it take more battery power to turn the wheels with the dif almost locked?

I have a car with only front and rear diffs, and no slipper. Is the concept the same, lighter in front heavier in back?

I looked on your play lists but dont see the kraton EXB dif explanation.

In my diffs it came with a little grease. So I used brake cleaner to remove it then repacked it with silicone grease. I haven’t used my truck yet. Should I keep the grease in or clean the grease out and use oil?

God bless traxxas summit locking diffs

Can I do that with all of my Differentials put in all earplugs all three of them how would that work out

Is this the same for LSD diffs?

Can you lock those diffs up.

Do you know how good leopard motors are?

Your set up might work for bashing but it's opposite from what racers would use. U use the term pin it like your at that level but racers don't want the back end to spin out and come around. Bashing 101 diff lub should be the thumb nail

Those are bevel gears, not planetary gears!

What about 1/8 racing?