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SCX24 - What are underdrive and overdrive gears? How do they help and how to install them! 

The Shop - Mini RC
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Ever wonder what underdrive and overdrive means and what it can do for your truck? This video will show you how to install new gears as well as the benefits and different options for over drive and under drive setups!
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6 фев 2023

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Комментарии : 129   
@anthonymiller8979
@anthonymiller8979 3 дня назад
Great info. I was planning to overdrive the front now I realize that for my wants an underdrive in the rear would be better.
@TheShopMiniRC
@TheShopMiniRC 3 дня назад
Glad I could help
@RippSnortin
@RippSnortin 5 дней назад
You have some great videos. Helped me with my Fcx24 PW. Now l don't have to double tap my controller to go reverse and l clocked the rear portals which was a mod l would have paid for, it helped that much. Worm Food.
@TheShopMiniRC
@TheShopMiniRC 3 дня назад
So glad my videos helped you!! Thanks a ton for watching.
@ethrrr
@ethrrr Год назад
Very informative video, unlike many other popular videos about micro crawlers. I do not know a lot about crawlers. Particularly the part about the driveshaft line up was new to me, and of course overdrive and underdrive :))
@TheShopMiniRC
@TheShopMiniRC Год назад
Glad we could help teach something new! We try to educate as much as we can!
@badassgee1647
@badassgee1647 Год назад
Amazing video and awesome step by step
@TheShopMiniRC
@TheShopMiniRC Год назад
Thanks a ton. I hope i earned your sub!
@colbyhann1808
@colbyhann1808 Год назад
sometimes i be getting so frustrated with these things, but EVERYTIME The Shop comes to the rescue i didnt know where the rings went for worm gears this time an here it is i already watched have the episode hahah came in perfect time!! i really appreciate what you do man!!!
@TheShopMiniRC
@TheShopMiniRC Год назад
Awesome to hear our video helped you!!! Thanks a ton for the support and viewership!!
@DadsRCGaragePNW
@DadsRCGaragePNW Год назад
I literally was just typing my comment about you saying under drive in the rear then you start in the front. Hahaha cheers man. Great video. I need to send you some videos on fb of my bronco. I have the hot racing OD transmission and the 23% front OD gears. Beast up hill and around corners. I love the combo
@TheShopMiniRC
@TheShopMiniRC Год назад
Hahha yeah, it was late too ! Lol.
@andrewrichey7374
@andrewrichey7374 Год назад
Yeah you had me confused there for a minute, said he was going to put under drive gears in the back start pulling the front apart, appreciate you sharing never thought about under gears for in the back like that cool
@TheShopMiniRC
@TheShopMiniRC Год назад
Haha yep. I was tired.
@majikfreak
@majikfreak Год назад
WORM FOOD! Great Video DUDE.... I leaned a lot... Keep up the great content!
@TheShopMiniRC
@TheShopMiniRC Год назад
Thanks a ton!!!!
@robertowens7771
@robertowens7771 4 дня назад
Worm food that's awesome
@TheShopMiniRC
@TheShopMiniRC 3 дня назад
Thanks for watching The whole video!!!
@brianmcvicker829
@brianmcvicker829 2 месяца назад
I love worm food!!! Best video I’ve seen for helping understand what underdrive and overdrive Is and how to install. Thanks for the good stuff!!!
@TheShopMiniRC
@TheShopMiniRC 2 месяца назад
Glad it was helpful!
@paulgarcia8846
@paulgarcia8846 11 месяцев назад
“Worm Food”, great video! I just got over drive for my front axil and under drive for my rear! Hopefully it will help my TRX4M Defender climb a little better!
@TheShopMiniRC
@TheShopMiniRC 11 месяцев назад
Good luck! Should help more hard core climbing for sure. If it seems like too much, just go back to regular gears in the front
@andrewrichey7374
@andrewrichey7374 Год назад
Just ordered me a set of the under drive gears my red bronco needs it bad again appreciate as always you sharing will watch for the next video until then peace and chicken grease 😁👍👍😎
@TheShopMiniRC
@TheShopMiniRC Год назад
Thanks a ton!
@Tipman2OOO
@Tipman2OOO 2 месяца назад
Bleep bloop
@CaseyD406
@CaseyD406 Год назад
Very useful video. I just did gears and needed this video first. Made a few mistakes. One to note is ring and pinion are matched. This I did not know changed out ring and put back together and there was binding.
@TheShopMiniRC
@TheShopMiniRC Год назад
Oops. Yes, you have to have the correct matching set.
@andrewrichey7374
@andrewrichey7374 Год назад
Oh yeah we can see it squatting down appreciate this video for sure
@TheShopMiniRC
@TheShopMiniRC Год назад
Aweosme!
@andrewrichey7374
@andrewrichey7374 Год назад
Yes they are flubber stuffers really digging on my new comp tires the mini pens I have the Slime balls in mine also I forgot and did not vent but they are super soft and squishy may not need it
@andrewrichey7374
@andrewrichey7374 Год назад
I found the easiest way to face your driveshaft is line up the grub screws that holds the driveshaft on if they’re both pointing up set to go
@TheShopMiniRC
@TheShopMiniRC Год назад
Yeppers. We mentioned that.
@SCX24RANGE
@SCX24RANGE Год назад
Awesome info sir
@TheShopMiniRC
@TheShopMiniRC Год назад
Thanks and welcome!
@REACTIVETERRAINRC
@REACTIVETERRAINRC Год назад
*Great video dude will be trying this out at Reactive Terrain 👍
@TheShopMiniRC
@TheShopMiniRC Год назад
Hope you enjoy them. They def help with the crawling!
@REACTIVETERRAINRC
@REACTIVETERRAINRC Год назад
I'll let ya know dude
@rekik66
@rekik66 Год назад
Worm food. An explanation on how you made that servo tray would be awesome. I’m in the process of making one.
@TheShopMiniRC
@TheShopMiniRC Год назад
It’s just an old servo tray cut flat, and then another servo tray with 1/2 the bottom flattened.
@independentmind1977
@independentmind1977 Месяц назад
Works good! Sweet chassis btw
@TheShopMiniRC
@TheShopMiniRC Месяц назад
Glad you like it. Thanks a ton!
@independentmind1977
@independentmind1977 Месяц назад
@@TheShopMiniRC did you make the chassis? What is it?
@TheShopMiniRC
@TheShopMiniRC Месяц назад
@@independentmind1977 it’s a stock chassis, I just cut the ends off and used a deadbolt cage to put some protection over the motor and give some shape. lol
@independentmind1977
@independentmind1977 Месяц назад
@@TheShopMiniRC lol it looks awesome
@TheShopMiniRC
@TheShopMiniRC Месяц назад
@@independentmind1977 ty!!!
@andrewrichey7374
@andrewrichey7374 Год назад
Yeah I seen it squat down, my red bronco SCX 24 it’s going to get under Drive gears in the back
@ronaldallanperez3064
@ronaldallanperez3064 Год назад
Worm food. Awesome video. Can you please do a video on a detail build of this awesome rig! I see the frame has been trim. Looks like you are using the stock links but vent to give higher clearance. How did you setup up the cage?
@TheShopMiniRC
@TheShopMiniRC Год назад
Yep, bent stock links for high clearance and the “cage” is just extra parts we had. I think it’s deadbolt cage parts.
@stuntzbelowzero7255
@stuntzbelowzero7255 Год назад
Great video brother! Great info! 👌 Btw you have an Awesome build! 💯💯 Ps subscribed ya 😁🤜🤛 WORM FOOD 😜🤟
@TheShopMiniRC
@TheShopMiniRC Год назад
Huge thanks!!! I really appreciate the sub my guy.
@Core-vu6mc
@Core-vu6mc 5 месяцев назад
The problem with the gear change is the front is now doing all the work as long as all four wheels are on the ground. Also if you drive any distance (not strictly climbing) you will scrub the tires off and wear the drive train.
@TheShopMiniRC
@TheShopMiniRC 5 месяцев назад
Yes. This is for trucks that climb. You would never do this on a trail rig or go fast vehicle.
@brandonbentley5453
@brandonbentley5453 3 месяца назад
I've noticed tire wear on the front. Have the front overdriven. The motor pinion is brass as a fail point for wear. I do not have long-term data, but the soft tires are wearing differentials. Climbing wise it's amazing. 😊
@russellklenz7152
@russellklenz7152 4 месяца назад
I love the WORM FOOD!!!!
@TheShopMiniRC
@TheShopMiniRC 4 месяца назад
Helllll yah! thanks a ton for watching all the way!
@andrewrichey7374
@andrewrichey7374 Год назад
Warm food 😁👍👍
@TheShopMiniRC
@TheShopMiniRC Год назад
Super warm. Lol
@Zytiron
@Zytiron Год назад
Worm food bro. I run the 1/12 underdrive and the forward squat is hilarious.
@TheShopMiniRC
@TheShopMiniRC Год назад
Hahaha. Facts.
@caseys_cozy_garage
@caseys_cozy_garage Год назад
I feel like I can hear my big dumb voice in the background of your running footage at the end haha. But dang now I'm convinced I should do an overdrive setup cuz im using a slow motor
@TheShopMiniRC
@TheShopMiniRC Год назад
Hahhaa. That might be true. It’s all gonna depend on your setup.
@ralphhunterbayne65
@ralphhunterbayne65 9 месяцев назад
Hi just now seeing your video. Amazing information. The chassis you viewed bended in the middle. Can you please tell me what chassis that is. I would like to purchase purchase for one of my scx24's. The upgrades you have are really awesome. Thanks.
@TheShopMiniRC
@TheShopMiniRC 9 месяцев назад
This chassis is literally just stock chassis rails. The “cage” was made from a deadbolt body cage. Nothing special except how I put it together.
@ralphhunterbayne65
@ralphhunterbayne65 9 месяцев назад
Hmmm it appears that in one part of your video, "when you pull forward it sinks in" Im guessing this is a fully custom build. Do you have a video on the entire build so I can get a better understanding please. Again thanks for the info. Very informative and helpful to when I try to mod my scx24's.
@TheShopMiniRC
@TheShopMiniRC 9 месяцев назад
@@ralphhunterbayne65 it “sinks in” because of the over drive in the front or underdrive in the rear. The fact that the rear is slower than the front causes the entire truck to “suck down” when going forward. Just adding underdrive or over drive to your truck will make it do the same.
@colbyhann1808
@colbyhann1808 Год назад
whats your opinion on best crawler tire and best drift chassy ? mini or whatever scale
@TheShopMiniRC
@TheShopMiniRC Год назад
I really like the OGRC pin comps (I have a video on them) and then the LGRP swamp kings seem really good.
@colbyhann1808
@colbyhann1808 Год назад
@@TheShopMiniRC have you done much rc drifting ? and if have so what chassy i just ordered the xrx from RC Supremacy know much about any of that?
@TheShopMiniRC
@TheShopMiniRC Год назад
@@colbyhann1808 unfortunately I dont have much experience with drifting. I have only done onroad racing. At some point we will do a mini drifter.
@colbyhann1808
@colbyhann1808 Год назад
@@TheShopMiniRC its a whole monster. im sure it will be gravey for you lol but it was way to much at first for me
@incognito1559
@incognito1559 Год назад
I got some overdrive gears for my front and rear axles. something I noticed was before I changed the work gears I could turn the entire drive assembly by spinning the wheels but wit the new overdrive gears I cant do this. I can still rather easily spin the drive assembly by turning the drive shafts but not by turning the wheels. Do you think this is a problem or does it have something to do with the harder gearing or something like that?
@TheShopMiniRC
@TheShopMiniRC Год назад
Worm gears are designed to be turned from the work gear side only. It’s totally normal.
@incognito1559
@incognito1559 Год назад
@@TheShopMiniRC thanks. I was avoiding running mine because I didn’t know if my engine was gonna burn out
@MadNing_
@MadNing_ 4 месяца назад
worm food 🤘🤘
@TheShopMiniRC
@TheShopMiniRC 4 месяца назад
Thanks a ton for watching.
@scottybarnett8544
@scottybarnett8544 Год назад
Are those stock Axles or extended axle in a stock housing? I see spacers buy the bearings, cant find that video , explain your self.
@TheShopMiniRC
@TheShopMiniRC Год назад
They are +4 axle shafts. (In a stock housing) Many people make em.
@scottybarnett8544
@scottybarnett8544 Год назад
Nice, another good idea , would love to see the fronts.
@REACTIVETERRAINRC
@REACTIVETERRAINRC Год назад
What's up pal I run an over drive in the front of my rock bouncer.
@TheShopMiniRC
@TheShopMiniRC Год назад
Hey there!! I bet it’s a blast!
@REACTIVETERRAINRC
@REACTIVETERRAINRC Год назад
@@TheShopMiniRC yeah I love the mini rigs man
@LastAnthony
@LastAnthony 9 месяцев назад
Great video! I did have one question…just received my injora OD axles and I’m getting gear binding front/back. Pulled the worm gears and pinions, they match, but can see there’s scratches on the pinion gear. Is this normal and is there a fix you know of?
@TheShopMiniRC
@TheShopMiniRC 9 месяцев назад
Hmm we didn’t have any issues like that. Be sure you have the oring in the worm gear to help shim it properly. You can also try using actual shims on the pinion.
@FvD714
@FvD714 11 месяцев назад
can you do 33% UD front and 50% UD rear???
@TheShopMiniRC
@TheShopMiniRC 11 месяцев назад
You can do any combination so long as those gear sizes are available.
@bdog7262
@bdog7262 6 месяцев назад
Hello, im trying to build my own little 24 From the ground up. Without having anything to go by my first hiccup is, I want 4 wheel steering. I see that the transfer case spins the drive shafts the same direction meaning the gears have to be changed in the rear steer axle. Can that be done, or do I need a specific axle? Thanks for your help
@TheShopMiniRC
@TheShopMiniRC 6 месяцев назад
The gears do not need to be changed in the rear axle. You can literally just put a front axle on the rear and you are good to go.
@bdog7262
@bdog7262 6 месяцев назад
@@TheShopMiniRC thank you so much! What is the best axle in your opinion? Also what is the best motor transmission combo?
@bdog7262
@bdog7262 6 месяцев назад
@@TheShopMiniRC are the portals worth getting? Raises cg so much in my opinion
@TheShopMiniRC
@TheShopMiniRC 6 месяцев назад
@@bdog7262 there are so many good options for motors, trans and axles…. Axles, the OGRC +5s, LGRP super 8s, Meus racing double joints, mofo x15s, all are great! Trans: LGRP and hardpark make the best aftermarket transmission for high end stuff Motor: anything furitek.
@TheShopMiniRC
@TheShopMiniRC 6 месяцев назад
@@bdog7262 portals do raise cog and introduce some slop. They are fun. But if you are serious. Stay straight axle.
@GULIVERSOFFROAD
@GULIVERSOFFROAD Год назад
my rig weighs 546 wow super light you are
@TheShopMiniRC
@TheShopMiniRC Год назад
Yeah. Kinda the point of this one. ;)
@snorrevonflake
@snorrevonflake Год назад
Would you care to share some information on this rig ? Or did i overlook an earlier video ?
@TheShopMiniRC
@TheShopMiniRC Год назад
No video yet. I can do one though.
@snorrevonflake
@snorrevonflake Год назад
@@TheShopMiniRC I love those very capable budget approaches (have already spent more money than necessary)
@TheShopMiniRC
@TheShopMiniRC Год назад
@@snorrevonflake true true.
@ChristopherBloomNYC
@ChristopherBloomNYC 29 дней назад
Worm Food!
@TheShopMiniRC
@TheShopMiniRC 28 дней назад
Hell yeah! Thanks for watching.
@tomwright943
@tomwright943 4 месяца назад
Worm food 👍
@TheShopMiniRC
@TheShopMiniRC 4 месяца назад
The best!!! Ty for watchin.
@tomwright943
@tomwright943 4 месяца назад
@@TheShopMiniRC no worries dude, me and my son have recently started taking crawling quite seriously and we are finding your teachings second to none 😎 I can see us getting lots of enjoyment and inspiration from your awesome channel 😎 thanks dude. We will more than likely have questions to follow in the future 😎👌
@TheShopMiniRC
@TheShopMiniRC 4 месяца назад
@@tomwright943 aweosme to hear the son is involved!! Love it. If you ever have any questions, be sure to ask!
@caseys_cozy_garage
@caseys_cozy_garage Год назад
Also worm food
@TheShopMiniRC
@TheShopMiniRC Год назад
Nom nom.
@weedfaya959
@weedfaya959 4 месяца назад
C est quel chassis ?
@TheShopMiniRC
@TheShopMiniRC 4 месяца назад
its all stock. ;-)
@DTW-bx2vy
@DTW-bx2vy 7 месяцев назад
The steering radius got about 10% to 15% worse using 23% overdrive on my FCX24 K5 Blazer. It was certainly not worth installing in all honesty & threw those overdrive gear away.
@DTW-bx2vy
@DTW-bx2vy 7 месяцев назад
Was a complete waste of $19.99 that I will never get back
@TheShopMiniRC
@TheShopMiniRC 7 месяцев назад
That doesn’t even make sense. Over drive in the front (or under drive in the rear), per physics, will pull your front around faster and give more turn radius. Are you sure you didn’t install the Underdrive into the front? Again, what you’re saying is physically not correct.
@DTW-bx2vy
@DTW-bx2vy 7 месяцев назад
Yes I install them correctly & only put overdrive gears into the front portals. Should I try much higher overdrive gears? Was my problem with only using 23% overdrive gears & should have gone with a higher percentage?@@TheShopMiniRC
@TheShopMiniRC
@TheShopMiniRC 7 месяцев назад
@@DTW-bx2vy any amount of percentage higher will always increase your turn radius. I wonder if they send you Underdrive gears. Wish you didn’t throw them away, we could have determined the issue.
@DTW-bx2vy
@DTW-bx2vy 7 месяцев назад
No I did not actually throw them away, but I was pretty disappointed. I never did count the gears to see if they did send underdrive gears & installed them cause I could not wait. Sham on me for never thinking of checking them first. I'll take a look at them again & compare them to the stock portal gears & see if your right because something was not right. @@TheShopMiniRC
@cylus_sector9
@cylus_sector9 Год назад
just my 2cents; why does everybody put overdrive gears in front? wouldn't underdrive in the back be better? edit: wormfood xD
@TheShopMiniRC
@TheShopMiniRC Год назад
We think to. That’s why we out Underdrive in. I think many got stuck on overdrive because it was the first to be out for the scx24 b
@scottlarge4645
@scottlarge4645 2 месяца назад
Worm food
@TheShopMiniRC
@TheShopMiniRC 2 месяца назад
Thanks for watching till the end!
@fullsendsurvival7804
@fullsendsurvival7804 5 месяцев назад
Wormfood
@TheShopMiniRC
@TheShopMiniRC 5 месяцев назад
Thanks a ton for watching!!!!
@alexarellano2541
@alexarellano2541 5 месяцев назад
Worm food
@TheShopMiniRC
@TheShopMiniRC 5 месяцев назад
Thanks for watching the whole video!!
@alexarellano2541
@alexarellano2541 5 месяцев назад
Thank you for such informative info, I love learning new things.
@eljovenyoutuberpr
@eljovenyoutuberpr 10 месяцев назад
Wormfood
@TheShopMiniRC
@TheShopMiniRC 10 месяцев назад
nom nom nom!
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