Holmes 12t Trailmaster Sport 550 in a TRX4 Bronco

[@kevensun]

You’re awesome. I need this in my TRX4.

[@RedRoxRc]

That 15.8 mph was lookin great. Drives with such confidence

[@mje19D]

I’m building a TRX4 right now and I’m absolutely going for the Holmes motor after watching this!

[@nathencosgrove877]

Have you tried to crawl with the 12 trail master sport in the trx4

[@BROtheBRAWLER]

Drag Brake is the true reason why all trucks need this.the difference is astonishing

[@ferp420]

that thing looks great bombing through the grass at high speed i started gathering the parts to build myself one of those broncos i got the extra super raw raw trx4 kit and im hoping to get to building this rig this year maybe lol if not next year for sure

[@noahbenns7518]

How did it work out?

[@coldsteel.and.courage]

I've been trying to decide on a trail master for my bomber. Stock gearing at the moment. The stock axial 35t is starting to die (survived 1.5 years on 3s!). I definitely need more speed out of it, considering a 2speed trans to go with it.

[@ExocagedRC]

you got 1.5 years on an axial motor is impressive

[@kumallamlghobbies4117]

Hello. Do you ever change a pinion gear for trx4. Which size the better for speed and torque power

[@corybreismiester1512]

Did you have any trouble with the esc getting hot, I put a 12t in my trx4 and eventually it fried the esc

[@babook96]

You made a great comparison... Holmes for the win...!

[@flatbedtrucker]

Another great motor thanks for the review!!! 🖒

[@nomusicrc]

Thank you for not adding music so we could hear the difference in speed Is that motor supposed to handle a 3S battery

[@z33guru]

Nice speed improvement. Was sold on this one and was about to pull the trigger until I saw that HH doesn't recommend this combo for crawling. Might be too fast: "27t - 21t TrailMaster Sport 550 (12t is not suitable for crawling) "

[@CoryFugger]

z33guru good info I feel like I was just about to pull the trigger til I read your comment lol.

[@Mango_Productions]

Agreed, I go tthe HH 27T 550 motor on my Gen8. Unbelievable crawl control and low end torque. Speed is decent too.

[@sickpuppy8077]

Man that motor gave the TRX-4 some punch! How do you think that setup will do compared to a brushless sensored setup? I'm running Castle Mamba X and a 2280kv sensored motor, how will that compare..? Maybe a good video for the future, a good brushed motor setup vs a good brushless. Compare crawlability, speeds, low-speed controls, battery life +++

[@ExocagedRC]

This is a great economy step up but it won't match a Castle or even an Axe brushless motor setup.

[@sickpuppy8077]

@@ExocagedRC I see. But a lot of people in different online communitys tells me that the brushless systems never will be as controlable at low crawling speeds as a good brushed system. Do you agree? I would love to see someone making a good video on that subject, using a good brushed system up against a mamba x and a low-ish kv sensored system.

[@ExocagedRC]

The brushed systems are still a tiny bit smoother at the very very low end of the rpm, but it’s so minor it’s almost non existent. The Axe is insanely smooth and quiet, the castle stuff is awesome smooth but a bit noisy. I usually KV and it Volt up and gear down most everything I have and I place well or win a lot and the only two vehicles I have that are brushed for comps are a Tamiya CC01 and a redcat Gen7 and that’s because the Gen7 is a spec class that requires brushed only.

[@kirkleaman6863]

Another great video buddy thank you👍🏻

[@RCPropaganda]

Holmes hobbies has best brushed motors. Want brushless but brushed is so cheap. I have a 550 21t I am testing out.

[@JViello]

Expected yes, but it's nice and helpful to see exactly what it would do in real time. Thanks for putting it there for everyone to see for themselves. What would be nice is to see the control difference between the two and not just top speed. How slow can each go, how smooth are they when going from a loaded position to free I.E. climbing over a steep rock and the front wheels get free. Some motors have what I call a slingshot effect. The bushes saturate and then unload all at once making the truck lurch ahead. Just some input for future videos. Look forward to seeing future content.

[@ExocagedRC]

JViello the lurch effect is lack of torque on the motor, you have to pull the trigger farther with a weaker motor and once it gets past the resistance it lurches. The 12t is good when geared down, the 21t trailmaster is a bit better. Holmes has some new 5-slot Crawlmaster Sport motors in 540 and 550 size, I have them but haven’t had a chance to record them yet.

[@JViello]

@@ExocagedRC ​ Exocaged RC The effect you're talking about indeed does happen. What I'm talking about is when throttle position doesn't change and the motor gets loaded up and even if you let off the throttle 100% it's going to "lurch" as the brushes are saturated and all those ions need to go somewhere. :-D John H has talked about the phenom a few times as well and how it's just what cheap low turn motors tend to do when trying to crawl slow.

[@ExocagedRC]

JViello interesting. I’ll have to see if he made a video on that. I always just attributed it to a weak motor and more throttle input needed to clear stuff. It’s one reason I have been doing brushless and gearing way down so it clears stuff easier. Now the Axe system is a whole different story there. I do like those quite a bit.

[@JViello]

@@ExocagedRC Haha, I totally agree with that mindset. Gear down, volt up! I'd run a 4 or 6s if my HW 1080 would let me. LOL Hmmm, but I do have some nice brushless ESC's in my 1/8 and 1/5 bashers...and some outrunners from my flying days. Now you got me thinking. LOL The last time I can remember him talking about it was I think the vid when he put a Crawlmaster Pro 550 into the Gen8. I remember that because I experienced the same lurch with my stock Gen8 550 as he did.

[@silentcontrol85]

Awesome, Thank you for share!!

[@hardcoretam]

That's great. I plan to fit a similar motor myself but with under drive in both axles and a 9t pinion

[@ExocagedRC]

yeah you'll do great with the faster motor when gearing all that down.

[@midknightmist]

Love the video...can you tell me what tooth pinion you were using?

[@josediazrc5989]

Es fantástico el coche contra más lo veo más me gusta te mando un abrazo 🤗🤗🤗🤗🤗🤗🤗🤗🤗🤗🤗❤❤❤❤❤❤💪💪💪💪

[@but531]

Thank you very much man, you help me a lot and i learn exactly what i wanted to learn.

[@lottiecooper609]

Hello exocaged, would you recommend the Holmes hobby 12t crawlmaster 550 ? My rig weighs appx. 6.6 lbs Traxxas Bigfoot all aluminum!! Any help would be greatly appreciated!! All I have right now is Titan 12t. Thank you very much!! And thanks for putting out all the videos in such a short time!!

[@originalrcfun7368]

For the record. I run this in my Slash and 2s. Works great. I testet it with 23/86 gearing and 3s too. Did 41 mph lol.

[@chriszotiadis7336]

Did you have any temperature issues with stock gearing?

[@michaelrajca6043]

great video. i om kinda new to surface vehicles and i like the improvemant in the holmes motor. do i need another rsc or is it just plug and play. i see its only 20 bucks too

[@TheAurabell]

thank you for the video ! going to attempt this in my sport soon thanks to this video

[@fermbizzfermdiggity6790]

I have this motor and it gets really hot on 3s. Is that normal? Everything is stock on my 2021 Bronco.

[@ExocagedRC]

yeah, its kinda risky to run it on 3s for too long.

[@jesscneal]

No crawl test? Lets see the torque in action too please :)

[@ExocagedRC]

Crawling is about the same as with a stock motor but you get more bump power, the holmes does have a bit more motor hum than the stock one does. Not sure why but it did that on the TRX and you can also hear it in the Gen8 video with it. Its a great running motor though.

[@chadzigler]

I swapped out the trx transmission for a scx10 transmission, I be gettin the 12t 550. I got the 21t 550. Still fast but the 12t 550 got it beat. The 35t 540 I got couldn't even move the truck in reverse. Mainly for 2wd's

[@kcrowejr8768]

Will a titan 12t motor be ok to run in the trx 4 sport? I have several of those laying around.

[@alexvillalobos175]

Kcrowejr87 did you do it because I want to do it to if you did let me know how it ran 🤞

[@kcrowejr8768]

@@alexvillalobos175 yes I tried it and it works. It has a lot more speed which I enjoy. I used it on the trx 4 sport.

[@ztwntyn8]

The 12t in my slashes both failed not doing much on my back yard track. Both bearing failures so idk maybe they would hold up trailing but I doubt once you get them wet compromise the bearings they last long also being small amount of turns not best for crawling where there is a big load all the time and straining. It will overheat the magnets like in my wraith on 2s the stock 17t motor died on a pile of rocks in backyard within 3 battery charges

[@untamed06tbss]

I also did the Traxxas 12t brushed motor swap on my TRX-4 Bronco. It only lasted me 15mins on a 3s, ran real hot. Now with the Holms 12t trailmaster sport its runs same speed, better low end control and stays Warm. We'll see how long it survives😁

[@tenkua]

@@untamed06tbss Still lasting okay?

[@dylanrad_]

Just recieved the 12t motor, also have 3s any over heating problems? Stock motor smoked on my 3s lol

[@ExocagedRC]

RCAddict so far this motor has ran on 3S a lot without issue. Make sure you gear it accordingly and you should be fine.

[@dylanrad_]

@@ExocagedRC would stock gearing work fine?

[@ExocagedRC]

RCAddict yeah start with the stock pinion and see how temps go and adjust from there.

[@dylanrad_]

@@ExocagedRC ok thanks!

[@p.k.808]

RCAddict Thinking about putting this 12t in my bronco after i burn the stock 21t titan.

[@LRCR]

Great Video and Test... O yeah 12t vs 21t.. RPM difference between the two of them with no load is really different, and the Torque is different also.. more Top Speed usually gear change.. But the Bronco Looked Great Going Faster.. Choice's are endless.. but my budget ain't LOL.. ✌️😀👍 HFLPRCING

[@ExocagedRC]

well the budget is always a limiting factor, luckily for us these motors are about $20 and work fine with stock esc.

[@rcbasherpodcast898]

Any heat issues with the 12t on the rocks? I might pick one up to run until I can get a brushless system.

[@ExocagedRC]

It got a little warmer than the stock motor but it wasn’t an issue at all.

[@branthalper1016]

I see that this motor is faster than the stock 21t but does it still have the slow crawling ability?

[@ExocagedRC]

Yes and with the higher rpm of the motor you can gear it down for better control if you like the stock speed.

[@chadlunsford6730]

Do you think this motor would work in an Arrma Senton Mega? Or is it only for crawling?

[@ExocagedRC]

Don't know, I'm sure it would work for a few minutes

[@chadlunsford6730]

John Holmes replied on one of his videos that I asked and he said that motor is made for fast rigs. Pretty cool.

[@krashkingrc9715]

Awesome job great video

[@williamx4697]

Hi, I use a 35t 20A motor in 7.4v 2S battery, if I put a 3S 11.1v battery will I have problems?

[@ExocagedRC]

You should be good with 3S. What esc do you have? Most all crawler esc’s are good to 3S

[@williamx4697]

@@ExocagedRC Esc 1060 60A

[@ExocagedRC]

William Souto yeah you’re good to 3S. If you want to step it up a bit you could get the Hobbywing 1080. Much better esc.

[@williamx4697]

@@ExocagedRC Cool, thanks!!

[@fredwaldrop3810]

Nice video, how well does the HH 12 turn crawl

[@ExocagedRC]

It actually crawls well, with it being a faster motor just run a smaller pinion and you’ll get the crawl, accuracy and a bit more wheel speed to bounce up some stuff.

[@fredwaldrop3810]

@@ExocagedRC Thank You, I believe that I'm going to order a few of them.😀

[@rcpatapouf]

Why doesn't traxxas put his titan 550 12t in there ?

[@ExocagedRC]

They wouldn’t make as much money using someone else’s motor. It would be an awesome selling point to say “Holmes Hobbies 12t”

[@need4drift]

Excellend test. Thank you.

[@direfox9464]

Pretty new to crawling did this swap now when i let off trigger the rear wheels come way up off the ground is there something i can do to prevent this or at least make it not so violent of a stop

[@ExocagedRC]

Midwest Mauller best thing to do for what you want is to get a hobbywing 1080 esc, it’s a way more tunable than the stock traxxas esc is.

[@Smile-N-Bear]

Run this in mine! Great motor ! Just sub'd bro! Keep up the good work!

[@lennomann]

any problems yet running the 12t crawlmaster pro in your bronco on 3S?

[@BLACKBOX1004]

very good

[@allmightygreat1892]

Good video

[@mikeram2294]

Great video! Looks like the HH motor popped a wheelie on 2s

[@alexvillalobos175]

Would this work on a trx4 sport with the one gear it comes with?

[@ExocagedRC]

yeah it will, you can gear that down a bit and get great crawling and a bit more wheelspeed

[@kiheirc3195]

Fun video

[@kevintaylor7837]

I just installed this is in my trx 4 Defender...I maxed out at 35km per hour on flat pavement...I would think you would have gone faster than that as the Defender body is heavier than the Bronco.

[@John-xk7uo]

What Servos did you put through out your trx4

[@ExocagedRC]

All shift and diff servos are stock. I have run several steering servos from the G13 to the Reefs 555.

[@713Ace529]

Was that with lock diffs or no?

[@kevintaylor7837]

Great video very helpful, Im thinking of replacing stock Titan motor in my trx 4 Defender with one of these. She weighs in at 8lbs and I run 3s lipo I do mostly trail running. Thoughts? Thanks!

[@devin218]

If you did that can you let me know how it likes climbing things? I don’t know if I should get onr

[@popwall4297]

Keep the motor you've got in there the Traxxas motor is a good trail in rock climbing motor I don't think you could improve upon it

[@popwall4297]

I have four of the TRX 4S and I only run nickel metal hydrate which I found to be just as good last longer and a lot cheaper the TRX 4S weren't meant or designed to be fast their trail trucks and that's what they should be used as when I'm looking to go fast I use my Max and in that one I do run the the lipos

[@wtsig76]

you sold me! Im getting one

[@LeftenantMalachi]

Did you have to change the pinion?

[@ExocagedRC]

Leftenant Malachi I used the stock pinion. 11t

[@joshkelly4682]

My redcat gen 7 sport has a trailmaster sport 27t

[@zaxpage9003]

You showed that a fast motor is fast. I was expecting to see a crawl test since its a crawler.

[@ExocagedRC]

well, some of us need wheel speed in a crawler

[@SebastianLong]

Why would you want to go faster with a crawler? Holmes makes motors up to a 55 turn. I personally will go after the 35, 45, or the 55 for mine if I were to change it with another brushed.

[@ExocagedRC]

in my areas where I drive I have a lot of sand and big hills so wheel speed is needed, if your terrain is all dry grippy rocks then you don't need wheel speed. Plus this is RC, supposed to be fun right? I also like to jump stuff and I've waterskipped a TRX4 several times..

[@SebastianLong]

@@ExocagedRC I see. I never seen anyone wanting to go faster with their crawler except Kevin Talbot and that's why I asked.

[@aviariojlg5490]

Yo compré un motor 21t no duró más de un año y solo lo usaba 2 a 3 veces por semana de 15 minutos a 30 pero después de un año dejó de funcionar no se si volvería a comprar otro😟😟😟

[@operation11charlieinc]

Niceee

[@calebblackwell3318]

I put a 12t in my sport with a 2 speed transmission. But it gets pretty hot. Is anyone else having that problem?

[@ExocagedRC]

Yeah you gotta be careful with that motor in these trucks.

[@ronaldevans202]

Yes I put a arrma mega 550 in my traxxas 79 ford bronco, I changed the pinion gear to 14 teeth, runs too fast in 2nd ,it gets a lot hotter than the 21 turn.it is the arrma mega 550 12 turn.

[@stephjr96]

What is the esc?

[@1elaijah]

You are under subscribed to. Thx for video.

[@MarcoMayhem]

wait is it waterproof?

[@ExocagedRC]

water and mud will get into it and eventually lead to an early death but its as waterproof as anything

[@MarcoMayhem]

@@ExocagedRC will it run fine on the sport version?

[@ExocagedRC]

Marco Mayhem yes

[@MarcoMayhem]

@@ExocagedRC Do the wires match? I heard in some motors the red wire connects to the black one. Whats the case with this one? Sorry im new to rc this is my first motor swap. Thank you! I love your videos!

[@ExocagedRC]

@@MarcoMayhem this truck runs a reverse rotation motor so yes if the motor already has a red and black wire on it, it may need to be switched around.

[@p.k.808]

Hey bud i did this motor swap. But now my forward is reverse a d my reverse is forward. How can i change this

[@ExocagedRC]

P. K. Switch the motor wires. This motor has no timing so it will work fine in either direction.

[@p.k.808]

Exocaged RC Works thanks bud!!.

[@ronaldevans202]

I just plugged red to black,black to red no problem at all!

[@RobertCarrizal]

Hey Exocaged RC Can You Ask My Questions

[@RobertCarrizal]

what's best for battery lipo 7.4 or 11.1 voltage when i brought it for homes 12t 550 sport last week

[@ExocagedRC]

2S is safest with that motor. You can run 3S if you gear it right. Keep in mind any motor can fail.

[@RobertCarrizal]

@@ExocagedRC 11.8 2S and 15.8 3s for traxxas trx-4??

[@RobertCarrizal]

we can't compare by compare battery?

[@ExocagedRC]

Robert Carrizal 2S is 7.4v and 3S is 11.1v. Now when a 2S is fully charged its 8.4v and the 3S is 12.6v

[@GarrettRC5thscaler]

If it's a trail truck or a crawler going fast kinda ruins it for me. Makes it look toy-like instead of hobby grade. Great demo non the less.

[@ExocagedRC]

sometimes you gotta have wheelspeed on trails

[@RobertCarrizal]

Can You Ask My Questions

[@skirmich]

But which is the torquiest? Try to stall the slipper clutch!!!!!!!

[@ExocagedRC]

Both will slip the slipper clutch is its adjusted correctly.

[@skirmich]

@@ExocagedRC Not the stock slipper setting but tuning it for the Holmes motor and trying to spin it with the Titan.. That is how you know if it indeed has more power.

[@ExocagedRC]

I haven't noticed any slipping at all with either motor under normal driving conditions. I've been working on a motor dyno for a few months but just havent got it ready for legit testing and video yet.

[@popwall4297]

It's just not worth the money and trouble to swap out the motor also who need to speed on a truck for the trail this is a trail truck and even if it wasn't a trail truck the difference in speed not worth the extra money the motor cost