:)

For sure!

@@DoRChey ya brother 😉👍🏽💯 also guys make sure you inspect your shafts 🤪 😂 hahaha

@vitodambra72 always important!

@@DoRC heck ya

Makes me want to work on my rc’s and I am hungry for some reaso

Works every time!

Glad you enjoy the style and thanks for watching :-)

There are several options for pinion gear pullers out there. The problem is I've never really found one that was strong enough to rip a stuck pinion off of a shaft in the sizes of gears that we typically use these days. They usually just bend

:)

Thanks glad you enjoyed :-)

Yeah for sure. I just think that the vast majority of people that encounter a brushless motor especially in my audience are going to be encountering non-rebuildable ones.

Awesome Glad it was helpful!

Glad you enjoyed I will!

Yeah an old-timer Volkswagen mechanic taught me when I was in my early twenties

:)

Thanks glad you enjoyed!

Thanks! Glad you enjoyed :-)

One of my top 5 RC tech content creators. I have benefited signifigantly from this channel.

Glad you enjoyed thanks for watching!

Thanks Glad you enjoyed!

Nice!

Thanks Glad you enjoyed!

Thanks for the sub and glad you enjoyed!

Definitely not my original idea but happy to share!

Awesome I'm glad you enjoyed. Yeah an old Volkswagen mechanic taught me the bread trick when I was probably 20 years old. Great for removing pilot bearings in flywheels

I have found a work well for smaller gears but seems like I was break them on most of the larger gears like mod 1. Maybe I just haven't gotten a good one.

@@DoRC I make my pullers myself, so I beef them up where necessary.

@gillian9178 nice. I don't have the facilities to do that.

Thanks for watching!

I'm happy to hear that. It's my favorite kind to make:)

Glad you found it informative :-)

True though sensored brushless systems are a lot cheaper than they used to be.

Sensorless smooth field oriented control exists. The odrive boards and clones support it down to at least ~20 rpm. You can't convince me that this doesn't involve witchcraft, but it is possible.

Depending on the kv of your brushless motor you can get more low speed torque

@@ZapTeam Even a low kV brushless motor has low starting torque, which can only be mitigated with sensors and intelligent ESCs. It takes one full rotation until a normal brushless motor reaches it's full torque, because the ESC doesn't have proper feedback from the motor windings beforehand and randomly fires on the three phases. A good 5-pole brushed motor with lots of turns still beats a sensored brushless motor with low kV in starting torque and low speed control for less than half the price. The low kV sensored brushless systems make the most sense for rock racers and rock bouncers which need to go both slow and fast. But for pure crawlers they are kind of a waste of money.

@@razorblade7108 Ok well you taught me something I didn’t know before. I dont know a whole lot about rc ground vehicles I was just saying something I’ve heard.

Thanks for watching :-)

Thanks!

Glad you enjoyed but the reference wasn't intentional. What did I reference?

@@DoRC @speedkar99 if you watch any engine tear downs of all kinds of makes and models he always claimed his brothers or wife’s toothbrush. Either way that kind of joke makes me chuckle.

@TheBiteSize ah. Yeah strangely I hadn't even heard of his channel before you mentioned it.

You can test between the phases to see if the resistance is similar. If one is much higher or lower than the others or one of them's open then that is indicative of a problem.

Awesome let me know how it goes :-)

Yep. That's where I learned it from. I've been a professional mechanic for 25 years now and learned it from an old timer Volkswagen guy

Absolutely! It can be done by hand but a drill press and vise is always better if you have the room for them!

I just looked at that motor. That's amazing for a brushed motor!

Awesome glad it was helpful!

Maybe I've only had low quality ones but I've never really had good luck with the pinion pullers on pinions that had stripped grub screws.

:)

Excellent point!!

You can try just using regular bearings of the same size. Any local bearing shop should be able to supply them. They're also a fairly common size so you can just measure them and then order replacements online. I can pretty much guarantee you that they'll be available as they are metric.

@@DoRC i will check that out, thanks!

You're welcome let me know how it goes!

That can definitely work though I've had it fail more often than be successful.

@@DoRC fair enough though never had it fail yet and use that trick daily as a building contractor 👍

@@DaddyDaughterRC-sw2zb Yeah maybe It's a different type of fasteners because I've been a professional mechanic for over 20 years and I've tried it a bunch of times and had really mixed results.

They do have parts for some motors but not for all and I wasn't able to find that specific part for this motor.

I've got a pretty decent reserve of electronics that I can dig into if I need to so broken motors tend to pile up until I get a chance to sit down and fix all of them. There are some brushless motors that don't have a back end bell and in that case you're pretty much just having to reach down inside them to replace the rear bearing. It can be kind of a pain. Generally speaking with the bread trick the bearing won't come apart so it should be removable that way though getting the bread down there is going to be a little more challenging.

Yeah you definitely could try to do board level repair though I thought that might have been a little beyond the scope of this video :-)

@@DoRC I agree! It is definitely something that needs soldering skills...

@yiannisyiannis yep

Yeah probably a hall effect sensor? Not sure how they work but i know they're not complex

@@insanebmxthomas Yes most likely

:)

Yeah they seem to make pretty good stuff.

It's good that works for you. It shouldn't be necessary though as long as you clean the grub screw and threads on the pinion with alcohol or brake cleaner. Let that dry apply the thread lock tighten securely then give 24 hours to dry.

Yeah and they probably didn't have high speed specific bearings in them to begin with. I'm not going to lie I've thrown regular bearings in motors in the past and haven't really had any problems with it I just don't like to recommend things that are outside of the specifications of the parts.

There's always going to be a little bit of axial play like that. As long as it's running fine it's not a problem

​@DoRC Thanks. Oh they also sell pinion gear pullers on Amazon, had to use one last year because the motor plate was in the way of the grub screw.

@@Macgyver46 Yeah there are a couple that you can buy though I have found that they tend to not work very well. That's just my experience though

Overall they make decent cars. Their support seems to be kind of hit or miss though. The Omni Terminator is a really cool vehicle.

@@DoRC thanks! I will order the ak787

It's more than just food!

Yeah special tools are definitely good though I appreciate methods that don't require them :-)

I have had a couple of them but I don't think this motor came from one of those. That being said there's nothing really that special about an x-01 motor.

@@DoRC I also think there's not much special about an XO-1 motor, they're a previous gen 1717 Sensorless Traxxas called it the "Big Block" then they built there own that they now sell in the new XO-1's. The reason i was interested i own an XO-1 and it currently has a Castle MMX8s\1717 1,650kv sensored combo. And i like the Black can of the stock motor better than the green that Castle has nowadays.

@cjchannel12 actually no you mention it That motor wasn't out of an x-01. It's just a 1515 size motor so must have been out of a first generation E-Revo or something like that

@@DoRC Oh really? I guess that's cool i remember hearing about when Castle and Traxxas had that perfect partnership before they threw most of it away for proprietary defective ESC. And i mean the VXL-4s to 8s systems most of them go bad or catch fire although i haven't had these issues but others have. The solution in my opinion i think Traxxas should renew their partnership with Castle or better yet start a new partnership with Hobbywing like the other companies do like Arrma, Redcat and Corally

@cjchannel12 Yeah I'm not really sure they have more failures than any other brand. I feel like if they did they would do something about it because warranty claims would cost them a lot of money. I have personally never had a Traxxas ESC fail and I've probably had a hundred of them

The easiest thing to do is just burn off the coating first which you can do with a small torch. You have to be careful not to get the wire too hot. You can also scrape the coating off though it's not quite as effective.

Great question, was wondering the same thing...and thank for the response DoRC.

Yeah as long as there's a blind hole behind it it will work. I actually learned it from an old timer Volkswagen mechanic when I was just starting out in the profession:)

For what?

@@DoRC pushing the bearings out

@shadowviper957 ah! Yeah pretty much anything viscous will work but that would be good for not making a mess too

I'm not sure exactly what you're asking here. If the ESC is brushless but not censored you can run either a sensored or sensorless brushless motor Just in sensorless mode. If the ESC is sensored you can still run either one.

@@DoRC Sorry, I meant to say a sensorless brushless motor. With a sensored ESC. But you answered my question. Just have to see if I’m able to change the ESC to sensorless mode. Thank You for answering my question!! Love your channel 👍👍 Your knowledge in Rc is amazing!! 👍👍👍👍👍

Yup! Unfortunately the extractor drills are also not very good quality and the screw was too hard for them. Ideally I would have used a left-hand drill bit but all of my left hand bits are too large

That normally works except in this case those two holes were the only two with that bolt spacing.

Glad you enjoyed it was fun to make :-)

Yeah in that case you can just take the back one off and proceed the same way. It's a little bit more challenging to install the new front bearing but it is doable.

Is technically possible to repair windings but unfortunately it's generally not really economical from a timestand point. You're pretty much going to be cutting the old windings out and threading new windings in which is not going to be fun.

@DoRC I've got a couple of stock Kraton 6s motors with bad rotors (broken magnets) and I think it's a Poisedon motor or something like that, just stutters when I try to run it on a known good esc, even without load. Thinking some of the windings may be burnt or damaged, but I believe the rotor is nearly identical size to thr Spektrums, so I was thinking of trying it, but haven't yet. Ideally I'd like to get the Poseidon working again just for fun, cause it was actually bigteedos motor that he ran in his 100mph erevo.

There aren't really many good options. With the right jig you could probably bend it back but it's unlikely you would get it straight without some sort of custom tooling.

:)

Sorry not sure what you mean.

The freezer thing isn't quite as effective as some people think it is. Going from room temperature to freezing is only going to give you about 0.0002" or 2/10 of of a thou on a 20 mm diameter bearing. The temperature differential just isn't really enough to make much difference. You really need significant Sub-Zero temperature is in order to shrink it enough to really affect the fit much.

@@DoRC Yes it has less effect on smaller bearings compared to something like an engine bearing but more clearance means less bearing pounding so I always do it anyways.

@@ThunderBird80085 true. Doesn't hurt:)

A little bit of free play axially as in when you pull the shaft in and out as normal and does not indicate a bad bearing. If you push it side to side and you hear or feel free play then that would be an indication of the bearings going bad.

@@DoRC when I turn the bore. I feel like it’s scratching something like it gets stuck onto something and when I get over that hump. It feels smooth so something is definitely wrong.

@@Desauce512 okay that sounds like there's either some contaminant inside the motor or more likely you're right it is a bad bearing. Best thing to do is pull it apart put the rotor in the bearing and spin it. You'll be able to tell pretty much immediately if you've got to bearing problem or not.

Yeah that's just a coincidence though. Ive fixed just as many hobbywing motors for

@@DoRC I’ve used Hobbywing for quite some time now and never had issues like that.

Fair enough. Everybody's experience is going to be different.

In this case the armature is technically the stator. The armature is the part of the motor that the electric current goes through. The magnets are on the rotor in this particular setup so it wouldn't be considered the armature

Nice! The bread trick is fun :-)

How exactly is a damaged?

Yeah I'm not really sure why they offer replacement rotors for some motors but not others. It seems strange though I'm sure they have their reasons.

Yep. I learned from an old-timer Volkswagen mechanic when I first started turning wrenches 25 years ago :-)

I'm surprised it ran at all like that.

@@DoRC I know

Traxxas tough

:)

Definitely is an option. I haven't had the best luck with doing that but it can work

:)

For a given size and for amount of power supplied a brushless motor will pretty much always be more powerful. There are two main reasons for that. The first one is that they use neodymium magnets which are more powerful and the other one is that there is no power loss due to The making and breaking of contacts at the brushes themselves. That's not to say that a brush motor can't be powerful because they can be and some are even made with neodymium magnets but brushless inherently is able to use the available power more efficiently.

@DoRC I see your point and perhaps my experience of motors is just a bit different than yours but I have found that in most instances even though they turn to very high rpms with ease a brushless motor produces less torque for a given wattage. I think they are definitely the way forward for many applications. Maybe newer examples are making more power but my experience is that most rc manufacturers are using high rpm motors with significant gear considerations to achieve the correct power required and avoid the cogging that often befalls them at start up.

@captainchaos3053 hmm maybe. It is also possible though that brushless motors run at higher RPM simply because they can. Brushed motors do have RPM limitations based on the centrifugal force that the mindings can handle and the surface speed that the brushes themselves can handle.

@DoRC Yeah that is also true. I believe the lack of brushes and therefore frictional heat also helps. In general they can tolerate high current better as there is no arcing which in turn allows for higher voltages and currents than ever thought possible in the hobby. 20years ago a 60v battery and over 200A just would of been so impractical but now it's quite normal. Perhaps that's why people think brushless is more powerful.

@@captainchaos3053 Yeah the amount of power put into these things definitely is a lot higher than it used to be.

What do you mean?

:)

Nice:)

Yup. Learn it from an old school Volkswagen mechanic many years ago.

It's best to wait a full 24 hours though because of my recording schedule I sometimes don't and sometimes pay the price :)

@@DoRC Yep, same here lol

Sorry not sure what you're asking here.

​@@DoRC haha no sorry I wasn't asking anything. I noticed the bottle you used of contact cleaner was from RadioShack!

@@bb.ben.g ah. Yep an oldie but a goodie:)

When you say harder to spin what do you mean? Also how are you verifying the bearings are good?

Yeah I've actually got helping hands a vice and a jig specifically for soldering connectors directly off camera. I just didn't grab any of them. saaaaderr:)

Yeah I hated to solder until I got a vice and it made my soldering 100% better

@@RcSpeedFreak-kk8wj I usually use the tools I just get distracted sometimes when I'm filming. Actually making the movie uses probably half of my focus. It's kind of the same reason why I ended up almost melting the one to end bell:/

Lol. I'll have to find out.

Yeah I could also fix the sensor. The video was aimed more at people who probably wouldn't have the skills or inclination to do so. I wouldn't say the 888 is a horrible iron. It's certainly not high-end but it will do everything the vast majority of people in this hobby need to do. I've been using that iron for both RC and electronics repair for probably 10 years now and it's never let me down. The only issue is is not quite powerful enough for some of the largest connectors that are currently being used.

@DoRC cool. Sorry if i came off like a know it all. A ksger t12 stm32 oled station from ali will last you forever man. I paid 140cad years ago but they go on sale for 40usd all the time man. I upgraded the handle but didn't need too. I have a jbc station now and would be up for a trade for an old rc if ya wanted. I'd include tons of extra cartridge tips, leds of every type and shape along with some other stuff for repair and new rc parts. It's up to you, I have tens of thousands of leds hahaha. I have a new 2 channel spectrum transmitter as well that I forgot to send back with an axial I bought and returned. I'd even throw in a multimeter if ya wanted a new one. I send electronics learning kits to random people for free but I stopped doing it recently because I'm saving for a road trip down to Utah and some other places. I want to go to some rc comps (as a spectator) along with some swap meets. Even with the exchange rate, rc is a super expensive hobby here compared to the us. I'm building an rc park on my property at some point and might have an open house where I give away a bunch of rcs to get the hobby going around here. Im 45 and retired haha. I have a ton of hobbies and I'm thinking about getting a second engineering degree this fall to pass the time haha.

@jstro-hobbytech I appreciate the offer but I actually have a generic jlb station sitting in a box waiting to be setup. The QS8s I solder need more jam than the 888 can do so this one is 250w:)

:)

:)

Yeah it can definitely leave a little bit of an aftertaste.

In my experience they don't really fail any more often than any other motors. It just so happened that the pile of motors I currently have were all castles :-)

She was one of my first subscribers :-)

NO ONE CARES DUDE.

Nice!

I do.

:)

No. As far as I know shafts alone aren't available and I believe they're pressed in so it would probably be pretty challenging to replace one.

@@DoRC If you can find where to buy a shaft/rotor then for a Castle 2028 or Dynamite DYNS1665 I might need one. I read they both have the same specs

@666cemetaryslut only place I'm aware of would be straight from Castle. Did you check their site?

Yeah just make sure it's non-chlorinated brake cleaner :-)

@@DoRC oh it doesn’t matter that will be okay. 😂

@@1980VINZ :)