Team Tekin R1 Pro brushless speed controller
 

I've been monitoring this controller for quite sometime and all the things I've heard about it was very good actually.

It's about 1" wide and 1.3" long with no heatsink and it can handle up to 14cells and 5s lipos without voiding the warranty.

Still, though, there's no heatsink and I don't know why they make it accept 5s lipos while it is purely meant for 1/10th scale rigs.

It's also much priceier than the Mamba Max controllers. The first worth $224 and the latter is worth less than $136. I heared, though, that it's much smoother than the Mamba Max.

If it can handle high voltages with no heatsink and external bec as well as being smoother than the Mamba Max, I guess I might go for one.

Someone must confirm the gossips, first.

I havent heard of this controller that much, but 5s without a heatsink? How do they do that?

I dont know how much smoother it can be from the MM, also the 1/10 thing is odd ; 5s lipo in say a T4?! Crazy if you ask me.

The no heat sink would have me worried.

I dunno, but I would give it a shot...Tekin has a good rep, so I wouldn't hesitate to buy one, but I have other controllers I would rather...

I am interested in them too. The one thing I do think is odd is the 5s part because they only listed up to a 12.5volt cut off (last specs I saw) and that is only good for up to 4s. The size looks good and I liked my tekin brushless for my mini but, right now I will wait for someone else to test it first before I spend another $200 on an esc.

I want to use a brushless controller with a 1920/4 in my touring car along with a TrakPower lipo pack.

I thought that a compact esc is the best I could use and the cars chassis is quite narrow. The R1 is small, but not as small as the Nosram and Quantum brushed controllers.

That caught my attention right away.

Probably they'll make some updating to the thing. It's not yet widely spread in all the hobby shops. In fact, I did not see it instock, yet. This must tell something. Tekin has been working on this thing for over two years now.

no heat sinks, dunno doent sound to safe to try 5s with then... but if it claimes it can...then it should.

It's not so much the high voltage or the current that causes the heat on the ESC, it's the time that there is a voltage drop on the FETs when current passes though it that causes the heat. And this happens mostly during the very short time it takes for the FET to switch on and off.

If the FET had VERY fast switching times, very low "on" resistance, with almost no rise time delay, and enough of them were in parallel (to further reduce the "on" resistance), it is possible I suppose to run an ESC without a heatsink.

For comparison: The MM specifies an "on" resistance of 0.0003 ohms. That's 0.03v dropped on it at 100A, which is 3W dissipation. Since that is kinda low to produce the heat we see on these ESCs especially since we never draw 100A continuously, I would say that the FETs have some type of slope when they switch on and off, which would account for the extra heat.

The R1 pro specifies the on resistance of 0.00005 ohms. That's 0.005v dropped on the ESC at 100A, which is 0.5 watts!

Based on the fact that the "on" resistance is 6 times lower than the MM alone, it should maybe run a little warm without the heatsink.

I have faith in Tekin. I love there mini rage esc; I have pushed that little 25a esc on 4s with internal bec for about an hour with a 6800 motor. Temps at the end of the run were around 150f on the esc with no heatsink....

Bye:018:

But on an esc with a heat sink, you at least know you can add a fan blowing on the esc if there are heat problems. If its in a closed plastic case, you cant even blow a fan on it to keep it cooler.

I talked to these guys at the iHobby show. They have a cool feature on these ESCs. There is a built in temp monitor like most ESCs, but this one has a led that blinks to tell you how hot the esc is. If its blinking faster its hotter. Now if there wasnt going to be heat issues, why would they bother with that.

Its still a cool feature...


EDIT: another thing I jsut noticed. The specs say its 5s capable, but the highest LVC setting is 12.5V. Why wouldnt they have a 15V cutoff if its 5s capable?

It is a cool feature.

I wonder if they goofed on the spec sheet? I would think 4s max.

Maybe they rated their voltage capacity using the same method that Quark used to rate the 125B as 6s? :005:

Yeah, you're probably right.

One other thing is that the Tekin president is fighting with tooth and nail with ROAR to make the Tekin brushless systems Roar legal. Not to mention that these systems are SENSORLESS.

That's the trouble with many electronics manufacturers, the get creative with the numbers and you're never sure what "headroom" or safety margin was designed into the product.

That's why we "test" the limits! LOL, unfortunately, it costs us money to do this at times. 4s would sound more fesible for this esc.

Well, there's still a chance for Tekin to make it a reality.
Jim, the president of Team Tekin said that it's smoother than the Mamba Max with no cogging at all. The system also has a glitch filter to make sure the radio signals are being sent with no interference.

I would like to see some testing on this esc...

Me too!
Though some people were given these controllers as beta and they really liked it.

Its gonna be two types of controllers with different KV motors.

The R1 will accept from 1 to 6 sub c cells and 2s lipos.

The R1 Pro will accept from 1 to 14 sub c cells and 5s lipos.

If the Monster Max will be out in the near future, I'm sure Tekin will release a more powerful controller for the monster trucks which must come equipped with a heatsink.

Just minutes ago, I learned that the Tekin R1 Pro esc with the Tekin bruhless motor got in the 4th place in a 24hrs endurance race( over 350mph and 70 battery packs). It was said that the system worked flawlessly despite the fact that it does not use a heatsink. It took 1st place for the first 2hrs and then the car crashed. For the last 22hrs it kept fighting for the top position, but it managed to occupy the 4th place in the end.

Not half bad, really.

That's a great showing.

BTW, did you mean to say over 350 miles and 70 packs?

That sounds pretty good! I wonder how a MM would do there?!

I wonder if Mike (RCM) would have an opinion on this esc?

Sorry, it is a 350 miles( not mph, LOL!).

Jim Campbell stated that the R1 Pro is spicifically made for racing and not bashing like other speedos( as if he referring to the Mamba!?!).

neweuser, Mike might really carry these controllers, but I doubt it'll be as durable as a Mamba Max. It's made for 1/10 racing machines only.

the most important thing is how and how fast the fetts hit the full conduction. total losses will be way more than .5 W. It's very hard to get the high frequency switch on/off process to be 100 percent clean .. (but i don't really need to tell you that.. ) :p

Yeah, I tried to mention that too, but it's hard to picture if you don't see a waveform and/or understand what causes heat. Not too many people know what slew rate is. So I didn't spend too much time on the topic. Basically, I was comparing the MM specs to the R1 Pro spec outlining the substantial difference in the resistance since those are noticeable numbers.

And yes, the higher the switching frequency, the harder it is to get a perfect square wave.

Hey, Brian and Rene, what did you major in during your life time in college?

You guys really dive too deep in electronic explaination to the point that you make me wonder if you are speaking proper English..:)

I've graduated from a Teachers College in my city with a high grade and I've majored in English studies, such as translation and linguistics( my favourite course during college, espicially psycholinguistics!), so I'm not very informative when it comes to highly detailed explaination of electric reactions and interactions. I can give some advice, though.

I hope I could gain knowledge of EVERYTHING in this world.
But, as one of the Islamic masters usually says: "learn something about everything and learn everything about a certain thing".

wow 5s w/ no heatsink cool i would give it a try for a turing car just to see how it does it seems to good to be true and tekin has a good rep but it is the same way with the quark i says it will do 6s and it will not even fo that plus you need a heatsink on anything lower pretty much so even though it says that does not mean for sure it does it saftly but it sounds cool how much is it.

$224 or so.

I just learned about a new sensored controller and motor setup called the Genius Brushless setup.

The interesting thing is that the controller's case is made out of aluminum instead of plastic. It has no heatsink, since the whole thing is wraped inside aluminum case. This might explain why Tekin did not use a heatsink in their brushless controllers. Probably the cases are made out of aluminum!!!

This is for 1:10 scale too I presume?

From everything i have seen, it looks like plasticand i seen on another forum that one of the things that that slowed the production was approval of the molds, that makes me think its plastic. This was several months ago

Even if the case is made out of aluminum, there is hardly any surface area to dissapate it.

If you mount the esc on a truck, there's plenty of air circulating around the controller. If you're talking about the 1/10 chassis, I guess you're quite right.

maybe they are electronically cooled like some of their brushed controllers.
i dont know how they electronically cool their escs but that is what they advertise on some of their brushed escs and it works.

Now if the esc was with fins all around, id say it would stay cool.

Hey Andy, you've been abcent for so long. where have you been?

I'm not worried whether the tekin has fins or not. If I'm gonna get it, it's gonna be placed in my touring car.

Hey, if its made like that, it might as well work the way its supposed to. It would be retarted if Tekin made a product which doesnt even stand up to simple tasks.