How to set RC gear mesh, gear ratio & WLtoys K989 mod to use all pinions.

[@adhienoor]

Thank you for the video Beaver, using stock spec i just lowered the gear ratio with given gear set inside the rc package. 27 spur with 21 pinion and the car run very fast almost equal to wltoys a959 on concrete track

[@LouieLouieLouie]

need some updates on the newer models ,these are great videos.the best

[@JamesDirtRC]

Genius I love you. Looking forward to playing with my WLtoy 010

[@addicted2rcs49]

Hey there my KZbin friend, thank you for another awesome and informative. Your videos are brilliant my friend. 👏 Keep up the good work fella. 👍

[@felipejimenez3630]

Thanks for all your efforts 🙏🏻🙏🏻🙏🏻👍👈🏽

[@bobbuddy4287]

Your information about the wltoys k989 is Oustanding......Subscibed as was so impressed👍👍

[@yekit485]

Very detailed information and explanation even with illustration and test, thx for your effort man. Liked and subscribed!

[@fazlaykhan]

Beaver's Hobby , Yours videos are awesome & extremely detailed. Perfect for newbies like me. I want to increase the acceleration. As I drive it indoor, I don’t need much speed. Which gear ratio should I use for a better acceleration? (Using the gears that comes with it) Doesn’t increasing the gear ratio stress out the motor? What’s the maximum safe upper limit of this setup. Thanks a lot.

[@BeaversHobby]

To get acceleration you can use 15T on the motor and 29T on the pinion without buying anything new (motor spins 1.93 turn for the shaft to spin 1 turn). Higher ratio (motor has to spin more for the wheels to turn hence slower speed) is actually safer than lower gear ratio because the engine/motor doesn't have to work hard to get the car running. There's also another way to call this which is low-gear and hi-gear which can be confusing (at least to me) because low gear means hi ratio where the car is slow (motor has to spin more for the wheels to turn hence slower speed). And hi gear means lower motor to wheel ratio so the speed is higher but with less acceleration. In this car the safest you can do is around 19T motor and 27T spur which is low ratio/hi-gear (motor spins 1.42 turn for the shaft to spin 1 turn). Still, this ratio is not good to go full throttle for too long.

[@HowToDIYRc]

good video nice way of explaining gear ratio going to be very helpful :D and 54 km is crazy great job on the tests

[@georgestsalikidis7118]

Amazing job dude!!! I finally understand something. Thanks you so much.

[@silbernersurfer8264]

Awesome piece of work! Thanks Beaver!

[@keithd9705]

Hi, brilliant video,!? What wheels are on your car please, where can I get them from?

[@BeaversHobby]

Wheels & tyres are from Mini-Z AWD. You can find them in Kyosho dealers. I bought them from banzaihobby.com they are in Japan so shipping is limited in this time. Take a look at RCmart.com too.

[@keithd9705]

@@BeaversHobby Thankyou!!

[@woshigepro2]

Imagine doing an acceleration test on these gears! do it like a drag race, measure the time taken to reach the other end.

[@BeaversHobby]

Thanks for the suggestion. This car has been converted to RWD drift. But I might do it with my other car instead if I have time.

[@TheDigitalPanther]

How do you attach the pinion to the motor? My motor overheated on my stock k989 and started melting the plastic housing above it. It melted the 17t pinion attached to it as well. I'm trying to put on a 15t pinion but the hole is way too small for the engine rod to go through. I can't even hammer it on. How did you slide one on so easily?

[@BeaversHobby]

It's tight fit on the motor. Optional gears that come with the car sometimes have too small hole so you'll have to use hand drill to widen it. Use 1.5mm drill bit and move around. If that doesn't work you can get some small plastic gears for small robots 0.5 mod.

[@oskarbruckner5858]

Hello, where can I find the pinion gears you are using? I saw the link in the description but it looks like they aren‘t the right ones. Can you help me?

[@BeaversHobby]

The one in the link is a whole bag with many types, there are a few in that you'll be able to use. Unfortunately they usually come like that. You can also search for 0.5 mod pinion with 2mm bore (it's the gear for motor pinion) but this mostly end up being more expensive than buying a whole bag though. You can also search for "plastic gear small robot".

[@mattdamaster2797]

which one of these would be the most ideal for drifting?

[@BeaversHobby]

It depends on many things, how much torque you need, what's surface you are driving on, etc. Basically you would want the highest gear ratio possible. With standard parts that come with the car you can use 15T on the motor and standard 29T spur gear.

[@dodiiidris]

Very nice tutorial 👍🏻 Sir i just buy wltoys like yours, but i cant got straight steering, how to adjust them? I try to trim from tx but no result.. Sory for my english.. i hope you understand what im talkung about.. regards from indonesia 🙏

[@BeaversHobby]

Check the tyres contact first to see if you got all 4 tyres on the ground. Also due to the suspension geometry it can be difficult to go straight once the car looses the grip so another way to keep it pointing in straight line is to mod the front steering linkages on both lower and upper bars so you can create toe out. Here are the photos. You don't have to do this much because it'll eat up the tyres. I make this to show what a toe out means. imgur.com/EpSmkxk Adjustable linkage. imgur.com/5cGBBcx Use rods with ball ends for 3.5mm ball head.

[@dodiiidris]

@@BeaversHobby thank you for replying sir, i got it, i think the way, this is about adjustable steering linkages, i try to find rod like yours.. once again Thanks 🙏

[@BeaversHobby]

@@dodiiidris My pleasure. Good luck with the project.

[@KanYahryEl]

Great video! Where can I purchase that motor mount?

[@BeaversHobby]

I modded it from the standard part. You can file the mount so it can use more gears.

[@icetea4345]

Thank you for your effort!

[@gabrielarch5145]

Well done,....great work.

[@SchmingyYT]

Has anyone else noticed that the newer version of this car is using a metal pinion without adjustment in the stock mount? If I use a gear puller to remove the pinion so I can modify the mount as described here, can I re-use the metal pinion or am I better off tracking down the plastic pinions?

[@BeaversHobby]

Replacing it with a plastic pinion is a better.

[@SchmingyYT]

@@BeaversHobby Seems like the biggest problem with mesh I have is with the metal pinion. That and the wobble in the prop shaft, but that's minor compared to how tight the pinion and spur are. I'll snag a pinion set and follow your motor mount mod instructions to see where it leads me next. Thanks!

[@BeaversHobby]

@@SchmingyYT My pleasure. Best of luck with the project!

[@walkofshamebadairdayfpv6120]

Great videos bro thx

[@cinedronefpv8783]

Hi braver, Do you using the pinion size with K989 drift cs mod? 17T, 18T or 25T? . I want to drift k989 cs mod with 15T rear visai. and I do not know to use the Pinion size for it???? which better for drift ( acceleration or speed) Thanks and best regards.

[@BeaversHobby]

I use 15T on the rear pinion giving it 1.875 CS ratio. I find it the best ratio to for the steering angle it has without doing monoshock mod to get more angle. CS will make the car slower because you won't be able to control it properly if you go fast. Once you increase rear pinion, you'll have to reduce motor pinion to keep the torque up and make it controllable. If you want to go fast I suggest sticking with 50:50. CS is for holding opposite lock.

[@cinedronefpv8783]

@@BeaversHobby thank you so much, I am using 15T on the rear. and I would like to 15T with 29T main gear( 1.93 with 40.71kph) I want to slowlly drift and very low speed.

[@BeaversHobby]

@@cinedronefpv8783 My pleasure. You can lower motor pinion to 10-12T for brushed motor and 8T for brushless because it has smaller can.

[@nh_1990]

Which faster? 15T:29T or 19T:27T?

[@BeaversHobby]

19T pinion + 27T spur is faster.

[@TestMachine55]

my pinion keeps slipping off the shaft any ideas on what i can do ?

[@BeaversHobby]

A dab of glue on the shaft will help. Just a bit, not much.

[@haydnholder7090]

Howd you remove the stock pinion gear?

[@BeaversHobby]

Using a gear puller is the safest way but you can make do with a simple flat head screwdriver. That's how I usually remove the gear anyway. Use a flat head to push it out.

[@wanpachaysri1081]

Good Job.Thanks Beaver.

[@devdrc]

Great info! I have these cars also

[@bixlix]

Nice video.

[@bugproductions9050]

Excellent vid. Just subscribed. 👍🇦🇺👍🇦🇺

[@issamacias7936]

How do you fix a loose motor gear

[@BeaversHobby]

Glue it in will be a temporary fix. Replacing the gear is a better solution.

[@gekoan6660]

Nice video, it helped me a lot! But where did you find that 20T pinion? I can't find it

[@BeaversHobby]

I got it from a random shop that sell stuffs to modify small car. I think you can find it in random plastic gear set on internet eg. ebay too.

[@gekoan6660]

I have to find the 1/28 one

[@gekoan6660]

Ok i'll search on ebay, thanks

[@BeaversHobby]

Search "plastic gear" on ebay and the result will come up quite a lot. Actually the gear pitch is identical to other small toys so there's no need to worry in that aspect. What different is the size of hole for motor. You'll need 2mm hole.

[@gekoan6660]

m.ebay.it/itm/4pcs-Motor-Gears-15T-19T-21T-27T-Pinion-for-1-28-WLtoys-RC-Crawler-Car-Parts/352332092206?hash=item5208a1132e%3Ag%3AHfsAAOSw82Ba1ebg&_nkw=pinion+1%2F28&_from=R40&rt=nc I found these, but it doesn't tell anything about the hole in the center, so i think i need a bit of luck buying these pinions

[@samin2012]

@1:33 how did you take the whole rear wheel assembly out? i removed the 4 screws at the back but still won't come out?

[@samin2012]

i actually did that but the pinion gear won't come out? do you have to put a lot of effort to take it out?

[@BeaversHobby]

@@samin2012 Yes, you need to pull the pinion straight out. It can be tight so be patience and pulling it out slowly.

[@samin2012]

​@@BeaversHobby changed my stock 17T motor gear to 15T. Thanks Beaver.

[@rizkiyoist]

@@samin2012 do you need to grind the motor mount to fit it?

[@anonymousjr.7702]

woww..nice info bro, btw what the best choice ratio for perform RC drift??

[@BeaversHobby]

15T on motor + 29T on pinion is the most balanced setup for this car. But I have CS ratio that increases the speed of rear wheels so I have 12T on the motor.

[@anonymousjr.7702]

Beaver's Hobby how many CS that have you made?

[@BeaversHobby]

Two, 1.5 and 1.875.

[@guidelineuk]

Top job an video ; )

[@นายพาระนิดนามามี]

มีคลิปสอนโมรถโดยใช้ esc ที่อยู่ในคลิปนี้ไหมครับพอดีซื้อ esc แบบนี้มาเเต่มอเตอร์แบบสามสายที่สอนโมคู่กับescในคลิป มันหมดครับ

[@BeaversHobby]

มีสอนวิธีต่อ + ตั้ง 2 สายในคลิป Stage 5 น่ะครับ วิธีต่อเดียวกันคือลองเสียบเข้าไปก่อน ถ้ามันไม่ วิ่ง - หยุด - วิ่งไปอีกข้าง ให้ตั้ง reverse ของคันเร่ง เสร็จแล้วค่อยดูว่าวิ่งถูกทางไหม ไม่ถูกก็สลับสายมอเตอร์ครับ kzbin.info/www/bejne/eITXaIhjrrSUarM

[@BeaversHobby]

เพิ่งเห็นว่าถามต่อมาจากอันที่ทำบรัชเลส ESC อันนี้ก็เป็น 2 สายนะครับ แค่มันใหญ่ วิธีต่อ ESC 3 สาย 1. เสียบ ESC เข้ารีซีฟ 2. เสียบสายมอเตอร์ เรียง A, B, C ไปก่อน ถ้าไม่เจอที่เขียนไว้ก็เรียงสายครับ ด้านไหนก็ได้ ไม่เป็นไร 3. ลองกดคันเร่งดู เหมือนกับของ 2 สาย ถ้ามันไม่ วิ่ง - หยุด - วิ่งไปอีกข้าง ให้ตั้ง reverse ของคันเร่งบนวิทยุ 4. ถ้าวิ่งไม่ถูกทาง ให้สลับ 2 สาย จริง ๆ สายไหนก็ได้แต่สลับสายนอก A กับ C แล้วสายจะดูไม่ค่อยพันกัน

[@นายพาระนิดนามามี]

@@BeaversHobby แล้วมีescในคลิปนี้ขายที่ไหนบ้างครับช่วยแนะนำหน่อยครับ

[@BeaversHobby]

ตัวนี้ Hobbywing Quicrun 1625 ผมซื้อมาจาก ebay น่ะครับ ยังไงลองหาดูครับ น่าจะมีขายทั่วไป เช่น abc flying, rc บ้านนอก หรือ mj modify อะไรแบบนี้

[@CiroZeno]

But using all metal pinions? Better or not?

[@BeaversHobby]

All metal pinions are only good if you use metal diffs as well otherwise mod the centre shaft pinions with other plastic gear and use Mini-Z diff is better.

[@CiroZeno]

@@BeaversHobby Hello, thanks! Maybe this is a stupid question for the experts, but what is the best method to understand how far to screw the wheel bolts in order not to lock them or not to leave them too loose? I rotate one wheel in one direction and look to see if the other rotates simultaneously in the opposite direction and I stop to screw to the limit to make it rotate like this ... is that correct?

[@BeaversHobby]

​@@CiroZeno Yes, checking if it can turn the other wheel in opposite direction is also an option but it won't work if the drivetrain is sticky, you'll be able to turn it anyway in that case. There are many ways to check if a wheel is too tight. Mine is tighten it fully first and try to nudge the wheel lightly and feel if it can turn without resistance. There will be a small area that allows a wheel to move before it turns the diff so I use that area to test if the wheel isn't too tight.

[@CiroZeno]

@@BeaversHobby Now my differentials are very smooth so yes, my method could be fine even if in fact it is not 100% reliable because I could leave the wheel slightly unscrewed. Ultimately, by any method, the wheel must have a little back and forth play without the differential cup spinning ... right? Is that the area you are referring to? Thanks again!!!

[@BeaversHobby]

@@CiroZeno Yes, that's the area I was talking about. There's a small gap between the diff and the pin so I use that. Ultimately it all comes down to what works for you.

[@nitroalone2622]

เปลื่ยนเฟืองตรงเพลาตัวเล็กหลังเป็นเบอร์9-10 จะได้csเท่าไรครับ

[@BeaversHobby]

9 = CS 1.125 10 = CS 1.25 วิธีคำนวณดูได้จากนี่เลยครับ kzbin.info/www/bejne/hGOnYqV3gbmEhrs

[@nitroalone2622]

ขอบคุณครับ

[@aliffaslam7289]

Sir, is it good idea to put a lubricant on the gear? just asking because i just ordered this Wltoys, just playing for fun at home only, could u advice something?

[@BeaversHobby]

Yes, you will reduce wear if you lube it. I put some PTFE grease for plastic on the gear. You can also find grease from Tamiya if it's available in your area.

[@aliffaslam7289]

@@BeaversHobby ok sir thank you

[@BeaversHobby]

@@aliffaslam7289 My pleasure.

[@aliffaslam7289]

Sir sorry sir, last question, for rc Wltoys 1/28, do you have any suggestion extra battery with high mAh ? i dont know what type battery to buy

[@BeaversHobby]

@@aliffaslam7289 You can use any capacity (mAh) as long as it fits inside the chassis and don't add too much weight. I'd say you can use up to 450 mAh. 500 mAh is a bit difficult to find one that's not too big.

[@joshuafallows2232]

Is your car stock

[@BeaversHobby]

The chassis is stock. The electronics already had an upgrade.

[@joshuafallows2232]

@@BeaversHobby what electronics in particular aren’t stock?

[@BeaversHobby]

@@joshuafallows2232 ESC = Hobbywing Quicrun 1625 Transmitter & Receiver = Radiolink RC4GS (I use RC3S, it's the previous version of RC4GS)

[@dulatun]

Beaver's Hobby a.aliexpress.com/_dYjIXrA Will this work with the 29T spur gear of this car? If not please suggest a pinion gear of 10T. What dimensions should I look for? I’ve only 6 square feet of playing area. So I won’t need much speed.

[@BeaversHobby]

Yes, this will work. You'll have to mod the motor mount as in this video so motor position is adjustable.

[@dulatun]

Beaver's Hobby thanks a lot. Will be buying this one then. Is there any specifications which I should look for when buying(like the bore diameter, gear diameter, pitch etc)???

[@BeaversHobby]

@@dulatun Bore 2mm or 1.95mm, 0.5 Modulus or 0.5M pitch.

[@dulatun]

Beaver's Hobby Beaver's Hobby thanks a lot man. You’re awesome. Looking forward to more awesome videos😉

[@BeaversHobby]

@@dulatun My pleasure. Good luck with the project.

[@filsdedieu100]

Trop de vitesse , ça ne rime à rien . Pas d'accélération .

[@LakAyo123]

เฟืองมอเตอร์ใหญ่ดีกว่าเล็กใช้ปะครับ

[@BeaversHobby]

ไม่เสมอไปครับ แล้วแต่ว่าต้องการอะไร เฟืองมอเตอร์ใหญ่ได้ความเร็วสูงสุดเพิ่ม แต่ลดอัตราเร่ง และทำให้ชุดไฟทำงานหนักขึ้น เพิ่มความร้อนทั้งสปีดและมอเตอร์ เล่นได้ไม่นานเท่าเดิมด้วยเพราะกินไฟขึ้น(อันนี้ขึ้นอยู่กับวิธีการเล่น แต่โดยรวมกินไฟขึ้น)

[@LakAyo123]

ออครับต้อวเอ่แบบพอดีๆ

[@RcOffroad9513]

Great video bro! I love modding the wltoys brand rc cars! Check out my channel! Awesome work!

[@강병민-i1x]

이 사람 바람새는 소리 들린다

[@oskarbruckner5858]

Hello, where can I find the pinion gears you are using in the video ? I saw the link in the description but it looks like they aren‘t the right ones. Can you help me?

[@BeaversHobby]

I almost typed exactly the same thing. In short. You can use only a few in that bag but it's cheaper to buy the whole bag. Otherwise search for "0.5 mod pinion 2mm bore" or "plastic gear small robot".