Servo Swap & BEC Install! - Traxxas TRX-4 Sport Full Upgrade Project Truck Part 2 | RC Driver
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- เผยแพร่เมื่อ 20 ก.ย. 2024
- Our project continues, this time with parts that I think will improve anyone’s experience with the Traxxas TRX-4 line of trucks. The ready to runs come with a good servo to get you going, in fact it’s still a used servo in one of our TRX-4 daily driver trucks. But you will probably reach a point when you start to master your truck where you’ll want more steering power. That’s when you’ll want to grab a new servo for your rig. Traxxas has high-torque servo options in their line-up for those who want to plug in and play with genuine Traxxas parts. In this video we’ll show you some of the steps required to install their High-Torque 400 servo and a BEC to supply the power needed to get optimum servo performance. We’ll show you a servo horn/arm upgrade too!
NOTE: I may have gone too basic on the BEC explanation. The BEC uses power directly from the battery to supply a higher voltage to the receiver. The ESC is supplying approximately 6.0V to the receiver which will power any modern servo you install. To get maximum performance, installing a BEC will bump the voltage up to approximately 7.4V to power high-voltage servos. Do not try to power a 6.0V servo with a higher voltage, the servo may burn out. Also I call the servo horn a servo arm in the video, the more appropriate name is “servo horn” I apologize for any confusion.
PRODUCT FEATURED
TRX-4 Sport
By: Traxxas
Part Number: 82024-4
Price: $359.99
Buy: snp.link/469150dc
Visit Traxxas: traxxas.com/
PARTS USED
High-Torque 400 Servo, 2255- snp.link/32819625
Servo Horn, 8247X- snp.link/f81454c7
BEC Assembly, 2260- snp.link/a6d62ecc
Receiver Box Top Option, 8224X- traxxas.com/pr...
Project Traxxas TRX-4 Sport Intro Video- • So Many Option Parts! ...
Project Traxxas TRX-4 Sport Build Part 1- • The Build Has Begun! -...
Project Traxxas TRX-4 Sport Build Part 2- You’re Watching It :-)
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The trx is such a great rig! Nice upgrades 🙌 the way I remember is “one to turn two to burn” 😁🤘
IMO the most pragmatic and instantly noticeable improvement one can make to a TRX-4 (or TRX-6) is a steering servo upgrade. The next would be stainless steel skid plates for the pumpkins and center chassis if you regularly play in the rocks. Frequent rock crawling can grind clear through those pumpkins in about 100 hours. I know this from experience.
I've always loved the term "one is for turn two is for burn"
1 to turn, 2 to burn, that's how I remember the ports.
Excellent
Just wanted to point out you won't need an external BEC if the ESC you use has an adjustable internal BEC. Like the Castle Mamba X for example.
Not correct!
a) The limiting factor of the ESC's BEC is the current maxing out at 1.0 A. A strong servo will use more than that every now and then.
b) Even if you can hike up the voltage from the (one) BEC you don't want to, because that will fry the other components (receiver and smaller servos).
Just a note about 7.4V - many mini servos cannot handle over 6V (even some standard servos). I have run Traxxas 2075s at 7.4V, to great effect, but 2065s might be a different matter.
Great video. Just my first thought 💭 “reward Traxxas with more money, by buying a replacement servo for the insultingly weak servo...”
Lots of fun Greg!
Wait Wait Wait... maybe I'm missing something here. If the Steering servo is the one who needs more power why are we feeding the speed controller instead?
Or, does this BEC system feed the whole receiver through the speed controller lead, and everything connected to the receiver gets benefited (including the steering servo) from it?
Nice upgrades👍
You definitely need the taller receiver box cover for the 2-speed/locking diff models. There’s not much room in there as-is.
Scottstoyz True. Thank you for pointing that out.
i don't think that bec is 7.4 volts if it was it would fry the diff and gear select servos, i believe its still 6.0 volts but has more current and amps then the stock bec,s 1 amp
Current and amps are the same thing. Lol but yes I think you’re right, I don’t think he BEC outputs 7.4v
No it won't, since it's only feeding the steering servo. The other components take the 6.0 V from the ESC's internal BEC.
@@ollep9142 I don't believe its feeding only specific channel. It feeds entire receiver.
What voltage output does the BEC supply? Also, I thought the Traxxas receiver was only rated to 6 V.
How would you use this in an axial scx10.3 with a hobbywing fusion pro esc/motor?
Is it still ok if i would use this servo @ 6.0V?
Hey greg are you gonna be getting that new redcat kaiju? I'm guessing yes cause you seem to have a good relationship with them. It looks really nice!
1To turn , 2to burn
I want to do a custom build and was wondering if my E-Maxx would be a good truck or should I up grade to the X-maxx or the new Maxx
Upgrade to the X-Maxx, the E-Maxx is discontinued thus resulting in not as much parts.
hey can i use a traxxas bec and use a non trax servo? im new at this and looking to upgrade servos..
1 to turn 2 to burn
Yup! That too
If you replace the ESC with one that can output the 7.4v for the upgraded servo (thinking HobbyWing 1080) in a TRX4 (not sport) can you use the internal 7.4v BEC inside the ESC or will that fry the small dif and trans shifting servos making you still need a BEC for just the steering servo?
I have the Traxxas ESC/BEC/Servo set-up shown in this video in a Bronco build I did that has the stock sub-micro servos and it works without issue. I can't say for certain it would work with the HW set-up, I haven't tried it. Sorry.
@@rcdriver This shows my R/C noobishness...but does this Traxxas BEC setup send the 7.4v to just the steering servo or does it send it to all the servos? My assumption would be the 7.4v coming from the ESC itself would send it to all the electronics...I wasn't sure if the external BEC like this was used to only send the extra voltage to the steering servo and not the rest of the electronics.
Spiffy_McAwesome Correct, the BEC in theory should supply 7.4V to the entire board in the receiver so they would all be powered the same. I doubt there is a regulator for the auxiliary servo ports separate from the steering. My worry about recommending trying another system is that I’m not myself certain that the Traxxas BEC supplies 7.4V. I’ve never put a meter to it. When I inquired about the voltage output of the BEC, I was told it works with their electronics configuration. Perhaps someone out there has tried it or tested it, might be a good research project to see if it’s 7.4 or 7.2 or whatever just to be on the safe side.
@Daniel Herweyer That is good to know but also kind of sucks that they don't give you a BEC that will make full use of the servo. Does the BEC say 7.4v?
What would I do since I have the Blazer factory 8038 body light kit hooked into the ESC. Should I be an running alternate battery? Or splicing in somehow?
You'll need the #2261 Y-Harness. I think I show it in this older video: th-cam.com/video/IeGnUrXLojw/w-d-xo.html
@@rcdriver Thanks, I checked it out very informative great video. That answered my questions.
Just to ask.. this BEC kit can use at Stock Servo 2075X ? Any problem?
It will work fine. This BEC has 6V at the output to not damage any servos.
Nice, but why only traxxas parts?
because it's a sponsorship video. Don't be fooled, you can use anything on the market. This was a paid and provided sponsored video by traxxas. Under contract he can not give you any advise or tips on any other product or he will lose his gravy.
Cause Traxxas will fire him for advertising other products 😊
Thanks for making this video! The directions that come in the box didn’t make sense, and the Traxxas channel didn’t help either. Lol
So is the Traxxas BEC 7.4 V for one servo
how do set end points on sport
By programming the TQi. TRX manual p. 34. You can do it via Dualrate or individual left- right endpoints there. Would be easier with the link module: trx6511 and phone though.
|Can i use this BEC with 3s lipo?
Yes. Traxxas TRX2262 BEC kit for TRX-4 has this 2260 BEC according to photos but I'd get the kit ( TRX2262 ).
But I don’t understand having to get an aftermarket part for a brand new car??? To me the product isn’t finished and please don’t tell me it’s a business model!!!! If Chinese companies can produce decent servo’s for a decent price than how come “Western” companies can’t?
Late but Ok... Its a business model haha.. "Aftermarket", modded, upgraded use to mean by the user or later on by a 3rd party who recognised a shortcoming. Now all these are created during the products development and are core to its pricepoint. I mean a 1/18 scale TRXm cost them $50 to produce but you can EASILY drop $600 on "upgrades."
I wonder how many times you said 'go ahead' in this and all your videos. Geez man... can't listen....
You could go ahead and try not to use the phrase "go ahead and..." quite so much. It adds nothing and is very annoying. Leave it out and you'll see. Go ahead and try it...!
Buy after market! Not traxxas ! There servos suck out of box so don’t reward them with money