Kaetwo's Tekin FX-R Review...

[mann0mann]

ThorneDog, if you are just using one servo on 2S you should be fine with the internal BEC - IMHO. Adding one cannot hurt and will only improve performance.

If you're running a second DIG servo, you're going to have to factor in the External BEC.

In regards to why the BEC drops as voltage goes up. Check out page 4 of this thread. John/Holmes Hobbies provides an excellent explanation of why this is happening.

-Mike

 

[Locked Up]

That's good information. That's the kind of stuff that Tekin can take back and work with. I'll have more today on my testing as well to post up some examples "thumbsup"

In that case ....

It's also got low end issues with my 1.9 running 2s and a Holmes Hobbies 454 puller.

I'd happily test anything yall come up with though I am limited to the 1.9 as I only have 1 FXR now.

 

[Rockcrawler]

Any updates on the FXR update? :lol:

 

[Pdog7]

Still Waiting

Come on Tekin it has been almost 8 months since the update was mentioned! I love my Tekin, I just want the crawler specific throttle profiles as these will make it much more useful for crawlers. I have a FX-R in my 1.9 and my 2.2 and love it but, I could use some more low end tunability. I saw mention earlier in the thread about throttle profiles currently available but, I can't find them anywhere in the Hotwire interface. Anyone know where they are or if they actually exist on the FX-R? Called Tekin the other day and the guy on the phone had no idea what I was talking about when asked about the update to FX-R for crawlers. I understand it takes time for research and development but I'm starting to wonder if the update is a no-go. Hey Tekin how about an update to the update."thumbsup" Subscribed, and waiting as patiently as possible!!!

 

[kaetwo]

I had and opportunity to run the new FX-R update and I'm very impressed with the change that it made to smoothen out my starts.

Let me start by first defining what it is that I am talking about with smoothening out my starts. I define this as the distance between neutral and forward movement and the speed that that the ESC delivers at the begining of this foreward movement.

I first noticed this effect when I began using 35x1's in my berg, however none of my single motor rigs have ever exhibited this behavior.

For my testing this weekend I was strictly testing the smoothness of my startups from neutral to forward movement. Using my existing rig, setup exactly as it's always been I did notice a significant increase in how smooth the ESC felt during startup. I have been considering changing my motors back to 45x1's because of this startup issue but now with this new update, I will happily stay with my 35's. After all if your crawler can't jump then you’re vastly at a disadvantage in competition.

Now it's important to note that my rig is setup much different than most. I run A LOT of wheel speed, I run lots of voltage and I'm pushing the FX-R well beyond its intended use. (I DO NOT REPRESENT TEKINS MANUFACTURE RECOMMENDED SPECS AND ACCEPTABLE USE OF THE FX-R OR ANY OF THERE PRODUCTS) My rig is also very heavy, making these startup issues more pronounced. However there is one thing that I think really helps that most overlook and that is the wiring. Personally I use 12 gauge wiring through out my rig. Does this help? Who knows, but I'm very happy with how it currently works.

Long story short, the update made a significant change (for the better) to my rig and I'm more than happy with the results. It's because of Tekins continued customer support and customer interaction that makes me stay with there products and they just keep getting better and better ;-)

I hope this helps.

8)

 

[SMFtwstdHICK]

I ran my FXR for the first time about two weeks ago. Man, I tell ya, what a difference in control. It was sweet to finally be able to back up nice and slow, instead of the rig going completely fast reverse on it's own. This ESC rules. The crawling affect of being able to go nice a slow up hills and through other terrain was killer. Definate upgrade for me. I still need to hit up the drag brake seeing as how it would stay still on downhills.

FXR, great choice and glad I got it."thumbsup"

 

[minor_threat]

I'm stoked about my FX-R too! I took it out today up a mountain to an area littered with angled boulders and even though I can see where the trigger finally engages on forward...you know what i mean, it's still imo a great esc. glad it was suggested to me.

 

[Pdog7]

I had and opportunity to run the new FX-R update and I'm very impressed with the change that it made to smoothen out my starts.

Glad to hear it is finally out and works as anticipated."thumbsup" Do you have any info on when this will be available to the public?

 

[Thorne_Dog]

I got a FX-R recently and have hooked up the hotwire to my PC several times, it looks like there's only about 4 or 5 things that I can change within certain ranges? Is that it for 30 bucks, really?

 

[Espeefan]

Do the FXRs that come with the hand wound 35T motors have the latest software updates?

 

[Ty@Tekin]

I got a FX-R recently and have hooked up the hotwire to my PC several times, it looks like there's only about 4 or 5 things that I can change within certain ranges? Is that it for 30 bucks, really?

Plus you get access to new software updates that come out. Everything adjusts in a higher resolution to really fine tune the ESC to your liking.

 

[Ty@Tekin]

Do the FXRs that come with the hand wound 35T motors have the latest software updates?

None of the FXRs out right now have the new software, we are still collecting feedback and making little changes, it should be out very soon.

 

[minor_threat]

i think it would be better just to drop five at my lhs and have them help with the it all. dropping 30 for something that i'm not going to be using but once seems wasteful. i'm still new to crawling but out of the box mine seems good enough to keep my 30 bones and buy some eggos of a loaf of bread instead of the software. my two cents. thnx for making it so compact though, love it.

 

[kaetwo]

i think it would be better just to drop five at my lhs and have them help with the it all. dropping 30 for something that i'm not going to be using but once seems wasteful. i'm still new to crawling but out of the box mine seems good enough to keep my 30 bones and buy some eggos of a loaf of bread instead of the software. my two cents. thnx for making it so compact though, love it.

It all depends on what you want to do with the ESC. The updates are a great reason to get the Hotwire as it allows you to make these small changes to the ESC. I do however understand your point. Our local hobby store finally bought one and now offers the service to customers, which I think is a great idea.

I do however use mine out in the field often. For example the rock conditions, temperature, tires used, etc...all lend to a different drag brake setting. So I really enjoy being able to adjust the drag brake 1 percent at a time rather than at 5 percent. It's subtle but I think at the competition level of our club it's important.

8)

 

[minor_threat]

that makes sense. i guess i didn't understand all the effects the control factor of the esc and the reasons for wanting to modify the settings. thanks!

 

[oldhippie]

I just got my fxr and the first thing it did was blow the cap sky high. Not a good way to start. I plan to run it with a Holmes 500 puller cobalt and r2d on lipo 3s in my ax10 artr. Went down to radio shack and got a cap. haven't tried it yet. Tekin hopes it was just a bad cap and the unit is ok (left a good burn on the top). Me too.

 

[mystic122468]

I guess i'm a little confuzzed about how the FX-R is supposed to work.. should you set it up for descending a hill, So you're not flying down at speed into a gate or worse? If that's the case how do you set it up so you don't roll backward while climbing a hill? I've been setting mine up to hold on a hill while climbing and trying to throttle down the hill on the descent.. I've also noticed that since my motor swap (to a Holmes 35T) it's not holding as well as it did when I had my Venom 55T installed..
I'm using a 3 cell lipo, Holmes 35T and CCBEC The rig is a DNA Slingshot..

Any ideas on ESC set up or radio(dx3) set up to help??

Thanks

 

[minor_threat]

i have mine set to brake and at 60* inclines or steeper it creeps downward which is cool but when i see the rear lifting up, and i want get a bit of speed moving forward to prevent it from endo'ing i have a small pause before forward engages which mann0mann mentioned ...and it sucks. i have my brake set to stop which i'll adjust so at inclines that steep i have more rolling movement until i can get to mikes for a service on the esc if that's needed or if that will fix the delay. i noteced in reverse i can crawl super slowly from stop at a gentle slow pace but going forward it's 0-60 in 1/4 of the trigger...there's not creeping forward slightly. it's zero *pushing trigger slowly* Pow! is that able to be fixed with the software? i'm running a stock 55t axial motor with a Spektrum DX2.0 tx-rx.

 

[Randy P]

Guys you can try a lot of settings out that I don't think you've explored yet.

First off try reducing your punch control. This will "take the edge off" of the initial throttle and reduce a bit of power in the beginning. It will not cause a loss of top end power.

By changing from a 55T to a 35T you've lost some of the 55's natural brake torque. This is why you will need to up your drag brake.

Another thought is to set your drag brake where you like it so it hold on a hill. Then you can use your brake EPA to set your decent braking. Once you engage the brakes on your radio the drag brake is off. This can get you the holding power on the hill and have controllable brakes for decents. That setting is easy to reach on most radios and can be done on the fly.

I'm not a crawler by nature. But I've had a few guys try this and they were quite happy with the results.

 

[53 willys]

I just ran my rig for the first time with the HH35t motors and a FX-R..love the wheels speed...love the FX-R..but I was cramping my finger trying to get some smooth take off's...I'm half temped to go back to the 55t motors but I like the wheel speed the 35t's have...

update on the new program? wanna send me the program so I can test it in st George this week end?

thanks
it's great to see a manufacture of a product actually participating and getting REAL life feedback!!
nice job!"thumbsup"