Tekno RC ET410.2 1/10th 4WD Electric Truggy

[RustyUs]

From Tekno:

Tekno RC redefined the 1/10th scale truck in terms of enjoyment and versatility when we introduced the ET410 1/10th 4wd Competition Electric Truggy in 2018. By including many of the industry-leading design features of the EB410 1/10th 4wd buggy, the ET410 was fast and fun right out of the box. It quickly became a fan favorite due to its versatility and performance on a wide variety of tracks. It could be raced on a small indoor track, then with very few setup changes, you could run it on a large outdoor track with rough surfaces and huge jumps. It’s also right at home performing stunts in your backyard or hauling down the street. We consider it the most versatile RC vehicle on the market today.

Features:​

• CNC 7075 Long Wear Chassis
• New Larger 3.5mm HD Hinge Pins and Revised Hinge Pin Inserts
• New HD Hinge Pin Braces w/ Revised Suspension Geometry
• New Taller, Stronger One Piece Wing Mount w/ Height Adjustments
• New 18 Degree LRC Spindle Carriers
• New Spindles w/ Adjustable Ackermann Plates
• New Adjustable Roll Center Rear Hubs
• New Rear Arms w/ Front Mounted Shocks
• Stronger HD Outdrives and Diff Couplers
• New Aluminum Front and Rear Camber Plates w/ Bulkhead Brace
• Optimized Reverse Bellcrank Steering System
• 13mm Big Bore Shocks w/ Revised Standoffs and Cap Bushing

Other Tekno RC website Resources/Info: HERE
Manual: HERE
Tekno Forum ET410 sub-forum: HERE

 

[RustyUs]

My day off just got most excellent...

 

[RustyUs]

Rear Shock Springs

Running my RCs on a very rough/bumpy track... I don't see me using the stock 3.22 rated springs and running a super low ride height. Plus, I don't like the fact that the springs come off the shock collars before reaching full droop (like shown below).

Everyone says the "problem" is not a problem. It is normal, "just run 'em, " is the answer that is always given . I say NO. Sooo, Team Associated SC10 4x4 13mm shock springs to the rescue.

Stock rear spring vs. new longer spring...

 

[RustyUs]

Front Shock Springs

Softening up the front end with some more of Associated's SC10 4x4 shock springs.

The stock ET410.2 front springs are 5.25 rate vs. the 3.5lb one that I'll be using. This setup is the same as what I use on my ET410.

 

[RustyUs]

Turnbuckle Orientation

I didn't build this ET410.2. I'm assuming it was setup as per manual (except for the rear hubs). I'll be trying to setup this mini truggy somewhat like my other one. After I'm done undoing/reversing the links, it'll be like all my Tekno rides, the turnbuckle markings will be to the right despite what the manual tells you to do.

Tekno's turnbuckles are backwards from all the brands that I've used. No joke

 

[RustyUs]

Center Driveshafts

After playing with the front/rear center driveshafts, the fore & aft movement was just too great to ignore. My usual o-ring install it shall be.

But first, let's do something about the pin...

"Chain breaker" to nudge the pin...

Much better balance.

 

[RustyUs]

Not sure, but I may have found why the pin was getting all wonky (in earlier post). The diff coupler set screw looks to be loose. That 2mm bit of movement could have been the start to something nasty. I did the best to show...

https://imgur.com/a/croPgAT

This is why I like to use a heavy duty red threadlocker on these set screws.

 

[hood52]

I've found on my ebuggy and etruggy they always seem to have some movement there, after a couple runs. Doesn't matter how much loctite I use, adding a shim helped out a lot. I haven't run my mini truggy yet to see if it has the same problem. I use tkr1226 on my 1/8 scale rigs, it might be to big for 1/10.

 

[RustyUs]

Shimming of the Couplers

(The manual does instruct nor show the following...)
I used some CRC shims on the diff pinion gear

Kind of like what went down with the SCT410...

 

[RustyUs]

Servo

I should have done a build thread or something... nah. I'm just highlighting some things going on/being done to the next ride. Manual suggest a minimum of 200 oz/in for the muscle. One of my well used servos from years past...

The shortened wires has me thinking this might be the servo I bought from a guy (Bill) back in the URC days. He got a used RC with the Team Associated DS1015 onboard and didn't want the thing. I've used these servos in a lot of different 1/10 and 1/8 scale platforms over the years. Anyway, bare minimum suggestion has been met (201.4 oz/in @ 6V)

 

[RustyUs]

Motor

This particular rendition of the mini truggy is getting the EZRun G2/G3 treatment. Low budget, but still sensored.
Hobbywing's EZRun 3652 4100kv G3 motor...

 

[RustyUs]

Motor

This particular rendition of the mini truggy is getting the EZRun G2/G3 treatment. Low budget, but still sensored.
Hobbywing's EZRun 3652 4100kv G3 motor...
View attachment 254034

Not a big deal on "roomy" platforms. Trying to find something for the Max10's combo sensor cable to latch on to has me frustrated. The extra bulky plug is a real headache in the mini truggy chassis.

I may have to revert back to the stock center diff support brace to make things work.

Or, I may just scrap the idea and get another Quicrun combo.

 

[RustyUs]

One Step Closer

Well, the ESC is taped down. A complete 180 from where I thought I needed to go. No going back now.

 

[RustyUs]

Two Turn Tables and a Microphone...

Where it's at:

It turned out better than I originally thought.

 

[TeknoJ]

Very nice

 

[RustyUs]

Skid Plates

Now available...

https://promotionrc.com/pages/j-t-bearing-co
https://1armyracing.com/collections/tekno/products/et410-chassis-skid-plate

 

[RustyUs]

Skid Row

 

[RustyUs]

Shock Cartridge Cap (TKR6712) O-ring Size

Since you can't buy the o-rings separately, and before I delete pictures, I thought I would put info here for future reference.

 

[WRM]

Center Driveshafts

After playing with the front/rear center driveshafts, the fore & aft movement was just too great to ignore. My usual o-ring install it shall be.
View attachment 253400

But first, let's do something about the pin...
View attachment 253407

"Chain breaker" to nudge the pin...
View attachment 253408

Much better balance.
View attachment 253409

What is the "O-ring trick" on the shafts?...

 

[RustyUs]

What is the "O-ring trick" on the shafts?...

No trickery here. Any time I see a lot of fore and aft movement, I'll place o-rings at the ends of the center front & rear driveshafts to keep them more centered. Does it help/hurt anything? I've been doing it since 2019 on my ET410 and having bent a shaft yet... knock on wood.

I will note, on my SCT410SL, I took the center rear driveshaft o-rings out during the last teardown. I wanted to see what kind of wear pattern I get this year. You can see the amount of play there is without the o-rings installed. I know, I know... the chassis is gonna flex and the driveshafts need some room when it happens. I run both chassis braces sometimes... all depends on the mood I'm in.