3D Printed Double Shaft Gearbox - Perfect for RC Vehicles

PCBWay Your 3D & CNC One-Stop Solution: www.pcbway.com/
DOWNLOAD THIS MODEL FOR FREE: thangs.com/Let...
U also need:
775 DC motor: ali.ski/CJuTrg
2x bearings 608zz (8x22x7mm): ali.ski/WLhiG
M4 threaded insert kit: ali.ski/OPwin
This gearbox has an 8:1 gear ratio, this is designed for 775 DC motor and the application is aimed for RC vehicles. The double shaft makes it possible to connect bought wheels to the output gear at the same time, but of course, if u print and build this by yourself the application is up to you.
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MY PATREON PAGE: / letsprintyt
Facebook: www. lets...
Instagram: / letsprintyoutube
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[@Rebar77_real]

I love your realistic attitude. "Well I screwed this bit up, but here's how I fixed it." gg man, thanks!

[@NAWNAW-ge8rd]

I thing gg means good gearbox, highly debatable what it means tho

[@diminacomusic7070]

LMAO! I identify so hard with the part where you mess one insert up and go "oh well i can still try the other side" the proceed to have just as much trouble the second time haha...oooooh man been there soo many times, even with those heat set inserts lol!

[@t1mmy13]

Yessss thank you youtube algorithm for introducing me to this channel!

[@JohnLauerGplus]

You should use white lithium grease. Also, I'd put bearings on those middle gears. I'd put an outside bearing on the first gear as well. You should also look at a flat shaft so you can just match the flatness with your 3d print design and slide your gears onto the shaft. No need for set screws then because the pressure on those will warp your 3d prints, especially PLA, over time. I would also do all of the gears in nylon. I also don't think the inserts are worthwhile. Just tap the holes on the outside of the box. They'll be very strong.

[@Papinak2]

I think that outside bearing for the first gear is not necessary - shaft of the motor is already supported on 2 bearings, and lining up three bearings can be quite challenging. However, I'd use metal pinion gear, from some RC car that uses 0.8 or 1 mod gears, instead of printed gear.

[@hanzo52]

@@Papinak2 Good tips

[@bismuth7730]

white lithium grease on plastics? really?

[@joeschmoe3815]

​@@bismuth7730 Na, better use some silicone compound.

[@mahdinazari3961]

I love how couplings screws fly out when testing😂, good job btw

[@gaussgreen7921]

to keep using herringbone gears and avoid interference in the middle (where the two helixes meet) you should add a small fillet on the concave side and a large fillet on the convex.

[@MCsCreations]

Pretty fantastic work, dude! Well done! 😃 It looks like a fantastic gearbox for a crawler as well! Anyway, stay safe there with your family! 🖖😊

[@joemulkerins5250]

I tried running the motor slowly to try not make a mess 😂😂😂😂 Love it....

[@dinosoarskill17]

I really appreciate you doing the videos in English, even though it's clearly not your native language. (=

[@jespero94]

So fun to watch. And also that you make it what it is and show the fails. Keep it up 😀

[@fakiirification]

"..... i put the lid back on" LMFAO. I lost my shit so bad i couldn't stop laughing for 5 minutes. Great comedy bro. Earned my subscription!

[@AMovigliatti]

“I messed this one up hard” “I couldn’t see shit what I am doin” 😂 SUBSCRIBED.

[@JB-yu1vv]

1:53 do you have any special settings for the raft? It looks really clean to remove the parts but still strong and evenly hold together

[@thomaslum2]

Was wondering that myself. My rafts don’t look that good.

[@ferrumignis]

I want to know this too, never had a raft remove that easily and cleanly.

[@thomaslum2]

@@ferrumignis I watched a video by Chuck Hellebuck (CHEP) and he was showing some good rafts as well. I’m going to play around with it next week.

[@cabooey2905]

"if you are thinking what a noob i am, camera was between my hands and i didn't, see shit what i'm doing and i messed this one up hard" bro that had me dying

[@GuyonaMoose]

Lol dude I just found your channel. Instant sub when you commented about your fail on the gear Insert 😂. We’re all human, the world needs more of that :)

[@piconano]

How interesting! I'm building the tri-wheel rover like in the movie "Damnation Alley" in the past 2 months. Harder than I thought. Tolerances was the bitch. I use herringbone gears, pulleys and 2mm XL belts. I love fusion 360. Worked with SolidWorks for over 10 years and will never go back to it.

[@stinkyham9050]

Would it not have been easier to install the threaded inserts into the various components before assembly? I guess I'll find out because I'm printing this gearbox as I speak.

[@JMB676]

Have you thought about using a gear oil r a atf as lube instead of grease. It’s lighter and you could fill the bottom with a inch or so and it will flow over all the gears n being lighter it might help the centrifugal drag. Idk just a thought hope it helps. I enjoy your videos

[@jaiprakashn9686]

Let's Print:- all videos of you are very sincere valuable, learning, understand pros & con's from your video itself, awesome knowledge sharing, thanks.

[@theschoolboyg8994]

First time seeing one of your videos, really good & didn't expect it to be this funny too 🤣

[@HolmesHobbies]

You might need a bigger esc to handle the load of snow. Possibly a smaller motor. What turn is the 775?

[@itsthorondil7608]

9:45 So I tried to run the gearbox slowly to not make a mess. Gearbox: I'm about to ruin this man's whole room

[@HarmanMotorWorks]

Good idea with the threaded inserts. But if this is to be considered 'hobby-grade', it definitely needs a differential. Either geared or a ball-type; otherwise you're just gonna bind and really stress out those gears. And also - it'd be better to add ball bearings to all the moving parts.

[@piconano]

I couldn't make the inserts work. They weren't strong enough and would pop out. So I put a nut in the middle, and now I can break the plastic by tightening the bolts too much. I was also told many years ago by a plastic engineer, not to use petroleum based grease on plastics, and only use white lithium grease. I complied.

[@backgammonbacon]

You need to make the hole for the insert smaller than the insert itself. a M3 insert needs only a 3.8mm hole. You also need to make sure the hole has thick enough walls. You also need to use the correct type of insert the ones meant for injection molding are crap. Done correctly they are stronger than the alternatives. Some of Let's Print holes are too large, if the smooth part at the start of the insert fits in the hole its too big.

[@piconano]

@@backgammonbacon The way I did it, as many others have, is to make room to insert a nut. If the bolt wants out, it either has to strip the nut, or break through 5mm of directionaly printed solid PLA. No need to buy anything extra. Which way do you thing is better?

[@Вадарху]

Интересно наблюдать за работой. Отличный ролик, отличный мастер.

[@freeeagle50]

“ I Didn’t See Shit” 😂 Man keep up the good work

[@Ryan-hp6xt]

Put bearings on all shafts, use sealed bearings, seal the case and fill it with transmission fluid.

[@Golde399]

So dope also hilarious and witty narration!

[@gmodesike]

I like the way you talk. ☺️

[@agoffgrid640]

Looks good. I have enjoyed your videos, you have given me ideas for my designs.

[@MrRitzyVlogs]

The double helical gears give space for grease or dirt on the gears a space to go.

[@Walterr-White]

awesome work sir! Greetings from Turkey :)

[@cadenmccorvey4153]

What is the grease you use? I am currently in the process of making my own 3D printed gearbox and would love to know!

[@PreciousOpal]

You should get into casting alluminum...it would make for better gears, straight from 3d print to full investment casting with prestigure optima

[@kirankoli852]

You should use Lubrication Oil for cooling & lubrication of gears.

[@shihu5005]

That motor get hot quickly in high speed.

[@michaelthompson8251]

consider. rotating the motor 90 degrees. would backlasing be greatly reduced

[@jrok96]

you've almost managed to make something we can already buy at the dollar store for $5 usd!!!!!!!!!

[@PhG1961]

Waw, what an awesome project ! Very impressive !

[@raphaelspreitzer5513]

very nice video can you give us the settings from your 3D Printer? because mine do not work well

[@BazilRat]

This is going to need some sort of differential front to back or you'll get drive wind-up. Unless you can account for slipping somewhere else in the system

[@GLeAnimal]

Keren kak cara perakitan nya kak salam sukses selalu ya hadir menyimak bos ku semangat trus

[@andygomez3dart]

What’s the gear ratio ? The mod or pitch diameter etc....Good job but a bit of lack of technical information. Hard to know how well this will work without knowing how much torque speed is involved...

[@TheInfernox7]

the middle gears produce so much drag without any bearings

[@Scoobydcs]

9:46 haha thats so me lol

[@richardlighthouse5328]

Don't forget differential gearing as well!

[@kennung1001]

Great video and a nice gearbox! Although the mistakes are not funny and generate a lot effort, I had to laugh about your comments. 😂

[@byte2600]

I have that qidi xplus printer. I love it and get excellent results though waiting on a new heat pipe.

[@jstro-hobbytech]

Awesome videos man. I have an odd question. What kind of pants are you wearing.

[@electronic7979]

Excellent

[@TedBackus]

are those pants from the future

[@errorgd]

and next to do is differential, they not that hard ;) would love to see how you will approach it

[@aktronics]

What if you seal the gearbox and fill the inside with oil? 🤔 (some dumb idea for later projects I guess)

[@stevenfaber3896]

Let me know if you want a design for an electric snowblower. I have a corded version that I think would be great for me to 3d scan for you. also, my 3d scan will be pictures, but still. It's angled higher than normal to keep everything electric safe, so if you're building triangle tracks, this could work.

[@logc1921]

6:25 You can put those inserts in the freezer and they will contract a little making inserting them a little easier, once inside, you can heat it with the soldering iron to make it fit snugly. BTW great video!.

[@lolx400]

That is very stupid

[@logc1921]

@@lolx400 ok

[@asheul1]

nice burnout :D

[@tareksma1]

The double helical gears are self centering

[@1FishinAddict]

Wonder if this can be used to winch a fish while fishing? Making an electric reel…

[@NeoIsrafil]

If you want a real nice grease for printed gears and parts grab some PTFE Magic lube by Aladdin. Real good goop and it holds nicely on just about any gear surface. I use this stuff on everything

[@garrettsgrotto8438]

weird question? what brand are your pants?

[@maxbennedbk7085]

you should keep the gearing but instead on onedriveshaft all the way thrugh you should usea differential

[@TuttleScott]

dont forget to grease the shafts on the center gears too

[@WIFAROBOTIC]

Good print

[@gmodesike]

You're funny. Great video buddy! 😊

[@UnwrappingByMimiKoteng]

Amazing

[@LexGoPH]

i love this guy haha

[@solidlift]

Excellent work!

[@toomuch7534]

Need keermestatud sisud mis sa kolbiga sisse sulatasid, neid Eestist ka kuskil saada?

[@spazer5520]

без подшипников, просто на волу, они быстро дадут выроботку ведь

[@MCsCreations]

Oh, BTW... When you run out of iron rods, remember about threaded rods. 😉

[@SecularMentat]

I wonder how well this kind of thing would take to aluminium casting.

[@hanbanaroda]

Try to check your printer settings, all the gear wheels looked very underextruded 😉

[@daleel38]

My toughts.... 1- Why machine screws? Use wood screws...toys dont have machine screws. 2- Why Gears? Toothed pulley will wear less. 3- Why 8mm shafts? Way to oversized. 4- Make the hole on the gears (or pulley) slightly smaller than the diameter of the shaft you will use, then drill the hole with a drill bit, you will get better surface finish and less play. 5- No need for bearings on the middle bridge shafts, looks like they are very loose (shaft - gear hole)...they dont even turn on the video.

[@cat-cambodia1801]

Good job 👍😊🤗

[@adamreynolds3863]

slowly to not make a mess..hahahahah boom!

[@colossalbigfoot256]

Old trick from way back rc racing.. use a pice of paper to get your gear mesh right. That is if there’s any adjustments.

[@UnwrappingByMimiKoteng]

Question. Hi what is this called? 7:34

[@EvertvanIngen]

I like how he says Build "booild"

[@toasterbath1395]

Can you share the editable files for your pump? I really like the design but I need to modify it!

[@xapemanx]

have you thought about making any two motor designs?

[@AndrewduToit]

Why are you not using bearings? It should last longer

[@jessejuliano8056]

'fuck this shit'. I love it. Your videos are great mate.

[@Duraltia]

@07:55 _"And it was said at this moment in time everyone wearing headphones has left the channel..."_ 😖

[@filippus_]

Is it better to use the "though pla" for high torqe gearboxes or is there no difference really? (it will be used outside in snow)

[@quinnobi42]

tough pla is a polymer blend that increases impact resistance, so it would be good for a bashing vehicle that sees a lot of hard acceleration. Maker's Muse has a video where he tests different materials for gear strength: kzbin.info/www/bejne/i6W1e2eio7N0jrs

[@hotstepper6303]

Your accent is awesome. where are you from???

[@hubrawe]

Amazing dear ❤️

[@АлександрБ-у7ю3м]

the model that weighs a ton of such a reducer is a city

[@backgammonbacon]

chamfer the holes of your threaded inserts. Did you run a 4 cell battery through that 3 cell ESC? Too high a voltage kills anything looks like user error to me.

[@LetsPrintYT]

Hello, ESC was for 4 cells but battery was 3 cells.

[@AcousticNRG]

sir .. how come only bearing on last gear?

[@retsetman9698]

Not necessary spin the middle shafts and the friction is low between gear and shaft. just enough the final stage shaft spins. so he just use bearings on the final stage

[@cloudpicrc5076]

you make me laugh.loudly.

[@struggle375]

Cool vid, thanks

[@COW879]

very cool, friend :)

[@Scoobydcs]

how do you measure the shaft spacing for gear meshing?

[@bigdogbigben]

Where can I get that speed controller?

[@BLueFeaTHeRedOliVeS]

What brand PLA is that blue PLA?

[@spongeimperium126]

Can the gears be lubricated with oil?

[@ratedmark4704]

Was going to ask what about the lube... !

[@kostyaunin2900]

I was funny and interest

[@onetwo5839]

Does any type of grease will do?

[@aptech2933]

Don't use normal grease on plastic I heard it chemically reacts with it over time, Use silicone based grease or vaseline, Other than that love this gearbox.