Holmes Hobbies Crawlmaster Sport 550 12t & 15t test in the TRX4 

John Roddy thank you and yeah if you know tech and can share, there are many that want to learn it. It takes a while to actually make a few bucks at it.

Which one do you like better for crawling the 15t or the 12t?

Bryan Forth I’m looking into the same setup either 12t or 21t how you like the 12t vs the stock 21t??

@@tyleryoung840 12T is smoother at start up and has more torque. If I had to choose one over the other, I would go with the 12T

Bryan Forth what about top speed how’s that compare between the two?

@@tyleryoung840 the Holmes hobby 12T is faster. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7opCVoR1iSw.html

@@tyleryoung840 I have my truck geared 45 / 9

TAC0MA if you still want some wheelspeed get the 12t.

Exocaged RC will do, thanks boss! 🙏🏽

@@ExocagedRC hey I was going order one these 12t for my gen8 but how about the capra rtr, should I stick with higher turn motor

Paul Clancy I like the 13t Crawlmaster sport 540 but the 16t is good too, just a little slower. A 550 size motor is not a bolt in.

@@ExocagedRC thanks ik, I watched you modify for 550 .was good idea maybe for me too since I cheated buying the r.t.r lol

There both excellent the crawlmaster 5 slot has better low speed control wile the trailmaster 3 slot has a better drag brake.

I tried this before in my TRX4 but I found the stock motor was much more powerful with more torque

Jon Carpenter interesting, I don’t have the Crawlmaster pro 12t anymore. I have the 10t but I can tell you from past tests the pro has a LOT more torque and control both on the crawl up and on descents. The magnets on the pro are just way stronger.

Hi Jon. Your comment Sounds interesting. Which brushless system have you been using? I am pending between a Quicrun 1080 with 5-slot motor vs the Hobbywing Axe brushless System. Not sure whether the Axe is worth the money...

klampfinger you can get great runtime, durability and control out of the 1080 esc with any decent motor. The Axe is in a whole different league, it’s control up and down are second to none and it’s a very good system, some can say it’s the best on the market. The Axe cost more but then again it’s a lot more of everything.

@@klampfinger klampfinger I have a mambax crawler combo with a 3800kv motor. It's a great setup for my bomber. For a dedicated crawler I don't need the speed and the low end control of a 5-slot motor is just amazing. The quicrun 1080 is an excellent esc too. That's what I'm using. I also dropped to a 9t pinion. My truck is a heavy trx-4 (lots of brass) and when I do need some wheel speed 2nd gear always seems to have plenty.

@@ExocagedRC Thanks a lot for your advice. I always enjoy you videos.

I've done videos comparing the stock titan to the holmes trailmaster sport 21t, it was an easy victory for the trailmaster. I haven't done any comparisons against the crawlmaster motors because they are slower and just built differently. I have an almost new titan 21t I could run against the 12t if you think that would be interesting.

@@ExocagedRC That would be interesting if they're geared for similar speed.

@@ExocagedRC will be good to at least know the speeds with the stock titan to comparison..

Gustavo Royo Ribeiro the stock titan is faster than both of these.

@@ExocagedRC I looked at your vídeo of titan x trailmaster 12t.. titan 21t with 2s is Just a little faster than crawlmaster 15t with 3s. But minimal difference. But with crawlmaster you have much more control at low speeds. Thanks for the vídeos with the infos.

yeah the 12t Crawlmaster works out well in that

Ruud Kuijer yeah I can do that in the end the TM will give a slight bit more start torque over the CM. The CM will have a slightly smoother start up and both will have about the same speed.

If you can afford it go with a torquemaster. That’s a big truck that in all honesty needs brushless power.

Sure, but be careful using the body because there is nothing to protect the paint. Some people use plasti-dip as the paint for this so they can peel it off and repaint when they want (I'll do this for just the fender flares on crawler bodies).

Use lexan paint on the outside, it is the same plastic as the inside. If you want to use non-lexan paint (as it offers more color choices) make a base coat of lexan paint or lexan clear on the outside first. You can then use regular paint on top of the lexan paint layer, and it will hold pretty well. I do this all the time.

Yeah and I’ve had an idea for a while. Paint the underside silver. Then paint the outside a nice opposing color of your choice. As it gets scratches they will be shiny when they are done but just paint those new scratches a rust color. That would give legit battle scars for the truck.

Ok thanks! I have a beat bronco body I want to custom paint to look like my real bronco so this will be cool!

@@addiemonsterrc3990 that's interesting. A friend accidentally used enamel paint once and it seemed to stick fine but wasn't flexible enough and flaked away at the places the body flexed, or so I thought until reading your response. Maybe the problem was that it didn't adhere well enough to deal with the flexing instead.

Low Budget RC stock 11t pinion. The “older” 3 slot motors have more low end torque according to Holmes, also the 3slot have a higher effective KV than the 5 slot ones do. The 5 slot are smoother but both are smooth enough I can’t really tell which ones are better.

The Crawlmaster motors have 5 slots on the armature. The other motors have 3 slots. Basically a 5 slot is slower than a 3slot and with that you can run lower turns and still have a smoother crawling motor.

@@ExocagedRC awesome, thanks man. sometimes there's so much information out there it's actually hard to figure out the answer. Do you by chance have any videos on the TRX4 axles? The one odd issue I can't figure out is at full turn lock the axles seem to bind or something. I get a very jerky forward motion. and I have read people say everything from its normal to my drive shafts are a little too long and you need to grind off half a millimeter. I'm not a big fan of grinding stuff off if not necessary.

Spiffy_McAwesome it’s normal. At full turn the tires speed up and slow down twice per revolution. If you drive it slow enough you can see the tire do this. The trick it to only steer as much as you need and to try to never go full throttle at full lock. Most of the time they survive fine and most don’t even notice when driving.

@@ExocagedRC thanks for taking the time to reply!

@@ExocagedRC there aren't a whole lot of places for me to break the thing here in Northwest Florida so I'm trying not to break it because I put it together wrong first.

Melissa Hall no, that’s way way too slow. Now if all you want to do is crawl and don’t need any wheelspeed then I guess so. Personally I’d go with a 16t or even the 13t if you want a bit more wheel speed.

Maybe you could get a rubber band on it and just move that to one side or the other and shift it that way? I haven’t tried that on a trx but it works on an axial 10.3

Thanks for the idea. Just recently put on a key chain retractor for a winch. So far hasn’t been able to make the difference but.

12t is smoother 21t has more low end torque

Chris Ennis 11/45 in this one and yeah the 17/39 is more of a basher trail setup.

Exocaged RC Wow, for some reason I think I’m only getting 7mph out of my 12t with 12/45! On 3s, yours is better! LOL, love your videos man.

klampfinger yeah stock 11t pinion and I had to trim the bronco inner fenders down quite a bit but they are in there.

@@ExocagedRC Again, thanks a lot...

@@klampfinger traxxas has a narrow fender kit. Cheap, and looks better than just cutting the standard ones.

@@EHolmThank you. I will biy them. Regards...

@@klampfinger trx#8080 fit.

Both are really good. Is probably go with the 12t Crawlmaster Sport but you can’t go wrong with the 21t Trailmaster Sport either.

@@ExocagedRC Im sorry for all the questions but I cant seem to ever find the info I really need & Im new to crawlers. Is it normal for my Redcat gen 8 wheels to bind so bad when turning. Im running a flyskygt3b radio I adjusted my end points but in order to not get binding youd have have a massive circle turning radius. is there something else to help this or is binding normal with these since there 4x4 locked? Thank you so much sorry for driving you crazy!!

HKGuy Snowman#1 binding is kinda something that happens. If it’s really really bad then try to oil the CVD’s in the front end. It may help a bit.

@@ExocagedRC Awesome Thanks for the info, I was starting to think something was wrong with it!! dont get me wrong tho its not like the wheels wont move or are jumping a 1/4 inch or something but at full turn it starts to kinda bind with some vibrating, Im just not use to it, I generally run 2wd brushless SC vehicles.. I'll take your advise & oil them up some, why I didn't think 🤔 of that is beyond me lol.. Now Im deciding between 21T Trailmaster or the 12T crawlmaster, Im worried the 12T will be to slow & Ive heard you lose your drag brake w/ 5 slot... Thank you very much

I was a bit surprised at the speed difference 3 turns can make

@@ExocagedRC me too! I didn't expect that much difference until I saw your comparison.

1-2 tooth larger pinion is an option to change it too

@@modelnutty6503 I don't like to gear up because it kills the low speed startup and torque

@@BudgetRC_Channel it might not kill it if its considered too slow already. I think the 15 turn with a 14tooth might be worth trying, I'm going to. Edit* on a trx4 2 gear

Jeremy Baity that’s a 1080 in there.

@@ExocagedRC I need to give the 12t a try. The 15t I picked up just didn't have the speed I was looking for so I went with a 540 27t HH trailmaster. I'm ordering the 12t 550 when I get back from physical therapy dang it. Thanks a million

in this truck i'm using the stock one

Go crawl master I would say I’m not an expert though

@@rcaddict7638 already went brushless running a sw4 and revolver

@@sprather84 oh nice how does it do?

@@rcaddict7638 absolutely incredible you need to try it out

Gerardo Ortiz I doubt it, it’s about the same as a 21t normal motor. You’ll be better off with a 12t Trailmaster Sport but watch the temps if you get that one.

Exocaged RC So the 12 T Trailmaster sport is the equivalent to a Traxxas 12 T in say a rustler

Gerardo Ortiz a little bit better but it’s close.

Exocaged RC better quality and maybe just as fast

these are the crawlmaster motors, a 12t 5-lot like this is about the same as a 21t normal 3-slot motor, he has them down to 8t and they work great

Nice thanks for tip

Tom Andrews this one has the Hobbywing 1080 esc

I mean, Crawlmaster sport 10T (5slots) could get more torque than Trailmaster 21T (3slots)?

What weight shock oil I use is the stock, I haven’t felt a need to change it. On the lipo, it’s a low amp crawler so there is no need for a big c rating. Mah is more important. No battery is over 30c no matter what is on the label

@@ExocagedRC ok thanks alot.

Jay Latham yep! I may try a BRXL esc and 4S on the 15t just to see how it runs.