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Tekno RC EB410 Thread

05-13-2019, 06:33 AM - Wikipost

R/C Tech ForumsThread Wiki: Tekno RC EB410 Thread

Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.

Last edit by: tobamiester

Welcome to the EB410 Wiki page.

Basic Stats/Features:

Shaft drive (tapered AL for light weight and straightness)
Gear differentials (all 3)
Low Angle CVAs (with captured pins so no ejecting them!)
Durable stub axles with 12mm hexes and optional offset adjustments
Reverse bellcrank steering system
Quick access bulkheads (for easy diff maintenance and tuning)
Spllt center diff holder (for easy diff maintenance and tuning)
8th scale style motor mount (for easy mesh adjustment)
13mm big bore shocks
3.5mm shock shafts
Droop screws

Videos

Servo Horns
Tekno included a plastic servo horn but also offers an aluminum one. This is highly recommended. Here's a list of servo horns that have been found to work:

Gearing:
Works out of the box for mod or 13.5.

Preference for Associated factory team pinions
Start mod gearing around 21t pinion
Start 13.5 gearing around 29t pinion with the stock spur (81tooth). If using a Tekin Spec R 13.5, start with a 24t pinion for medium sized indoor tracks.
Internal Gear Ratio: 2.5:1
For comparison:
B64 is 2.47:1
22-4 is 2.4:1
YZ4 is 2.6:1

Wheels

B6/22/rb6 wheels direct fit
22-4/XB4 front wheels direct fit
B64 front wheels will fit, but you need the +1 hexes (can use #TKR1654X, which is a +1mm hex)
22 2wd front wheels will also fit, possibly a good option for carpet.

Setup Sheets and other documentation
Setup sheets for all Tekno RC vehicles can be found here. Please be sure to try our recommended setup. It works very well on most tracks.

Ryan Lutz Setups
Instruction Manual
EB410 Resources
Ryan Lutz IOCC blog
PT Oil CST conversion Chart
List of Vehicle Setup Adjustments and Build Tips can be found here. There are several videos and articles detailing the building of shocks, diffs, camber links, etc.

Piston Drills:
Some of our setups recommend using pistons that are enlarged. For instance 4x1.9 or 3x2.0. To drill the pistons we recommend the following:

GMK Supply Piston Drill Set
16PC Metric Bit Set Metric Sizes 2.00 to 3.00 MM.
Harbor Freight 0.5mm - 3.0mm bit set * 2.1mm not included

Aftermarket Upgrades:

Warranty Policy:
Tekno RC is the only company in the industry that will give 50% off of parts if returned to them using the General Warranty return policy found on their website. The parts can be lightly used or completely abused, as long as the part is still being produced it's covered!

Build Tips:

When fastening the steering posts with a 5.5mm socket wrench, you can back space the socket with some nuts to help drive the post into the bulk head
Place an alcohol swab over metal threads and drive screws through the swab to clean both sides of threads before applying thread lock
Use a metallic marker to indicate what fluids you have filled in your diffs for easy identification
Apply thin layer of grease on crown gears to help hold gaskets in place for easy hole alignment
Bags F and H have 2 different size set screws, be sure to use the smaller 3x3mm screws for the hexes or you may run into problems installing wheels over the hex if you use the longer 3x4mm screws
To make is easier to slip the o-rings on the shock cap bleeder screws, apply a drop of shock oil and slip them over a 1.5mm hex bit, then line up the bit with the screw and transfer the o-ring over using fingernails or needle nose pliers
pinch+rotate shock caps in 17mm hex wrench to improve roundness
More shock build tips here
Use a 3.05mm drill bit or 3.05mm Kyosho arm reamer, 1/8" drill bits are not recommended because they are 3.17mm in diameter and tend to introduce too much slop, the pins are roughly 2.97mm in diameter
Replace the stock 3x14mm screws (TKR1405) with 3x20mm screws (TKR1409) in step H-10 in the manual in order to increase durability to the bulkhead.
When installing the front and rear differentials into the bulkheads be careful when tightening the 3x8mm screws of the cover that holds the diff in place. Bottom out the screws first (use a hand driver and make it hand tight) then check the diff to make sure it rotates smooth. If it binds up, start by backing out each screw 1/8-1/4 of a turn until the both front and rear diffs move freely. The plastic threads will keep the screws in place so don't worry if you think the screws are not secure.
When installing the steering hub kingpins (TKR6596), drive each one in hand tight only. Then check the movement of the steering hub. If it binds up, back out the kingpin screws by 1/8-1/4 of a turn until it moves freely. Then install the set screws (TKR1601) to hold it in place. Only drive the set screw in until you make contact with the kingpin. Do not force it.
If using the low profile servo mount, be sure to use smaller OD (outter diameter) washers to avoid rubbing on the center drive shaft. Protek ball stud washers are a good example of the acceptable diameter. You can chose to not run washers though it is recommended to use them as it makes for a more secure mount.
Ball Cup Alternative from AE: ASC91453. These are used as a harder composite option if you are not happy with the softer stock plastics. Note that these are approximately 2-3mm shorter and require compensation when building your kit to the manual specs to achieve proper camber/toe settings
Wheel Nut Alternative: Yokomo 4mm Thin Aluminum Serrated Flanged Nut

https://www.amainhobbies.com/yokomo-...-n4flt/p541494
Moving Rear Shocks to the Front of the A-arm

This is the break down of what's required by one of the Eb410 FB users.

Joey A.

So since there has been some people wondering about running the shocks in the front of the arm I though I would try explaining everything that I did to get them to work and why. My goal was to run as much stock stuff as possible with the least amount of modifications.

-Arms- need to be flipped and 1mm shaved off the back (spacing the arm farther back) running it this way the car is still a mm shorter then stock but more material could be removed for more adjustability but I have found no need to make the car longer.

-Inner ball stud- there are 2 ways of mounting, the first can be used with the stock plastic tower. All you need to do is use a 10mm ball stud instead of the lower shock mount screw and a little clearance from the shock tower and diff case. Using this method will work but the ball stud is moved lower and farther in then the stock locations which requires different pivot locations to try and correct roll centers. The other way (preferred) using the option carbon tower drill a hole higher and farther out if done properly you will be able to get the ball stud location in the correct hight(0mm) and between the two stock locations.

-Shocks- only 2 changes from stock you will need to space the top shock mount 2mm out. You will also need to run around 1.5-2mm less droop depending on your setup.

-Sway bar- this is the hardest part of the swap. This can be done a million ways I chose to print a mount in the stock ball stud location which allowed me to use the stock swaybars and arm mounting position. You can also bend your own bar and use the stock mounts on the back. You will have to drill your arms on the other side and closer to the pivot for this to work (remember you will need a thinner bar the closer you mount the lower pickup on the arm to get the same feeling as stock).

-Other- you will need to remove the drop screws on the rear arm. Depending on rear rims,hubs,ballcups and setup you might need to clearance the outer ball cup so it doesn’t rub on the wheel.

-Why- the benefits of running the shocks in the front are the ability to run a softer rear shock package without giving up corner speed and pack. The car will land without chassis slapping or packing out as easy allowing you to drive the car harder and it corners flatter and rotates faster without losing rear grip.

Sorry for the shity grammar,
TJR

Sway bar mount for forward mounted shocks: https://www.ebay.com/itm/Tekno-EB410...4AAOSwYNxahFkq

Exotek Sway Bar Mount http://www.exotekracing.com/eb410-re...ar-mount-6061/

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01-02-2018, 10:41 PM

#3061

slow_jun

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Quote:

Originally Posted by blankenj99

tried this one.

01-03-2018, 06:54 PM

#3062

RodRC

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Exotek spool

Anyone try the new exotek spool yet, if so what would you recommend for medium dirt/clay track center diff or the spool?

01-03-2018, 07:02 PM

#3063

EbbTide

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Quote:

Originally Posted by RodRC

Anyone try the new exotek spool yet, if so what would you recommend for medium dirt/clay track center diff or the spool?

Might want to hold off on the spool for a couple weeks. Exotek is updating the outdrive cups to make them harder as currently the people using it have seen severe wearing after a few packs. But I don't think you'd want it on clay unless you're a balls out driver and can handle the twitchiness it'd add.

01-04-2018, 12:45 AM

#3064

ljungberg

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Quote:

Originally Posted by AccessRacer

How is everybody using a 1.7 front sway bar? Are the front and rear bars the same bend? What size are the small holes in the pistons? Are the rear 2x2.0mm rear pistons the way to go for carpet and clay? Thanks

I use Xray front sway bar. They have up to 2.0 mm.

01-04-2018, 04:48 AM

#3065

proliteandsc

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Bearing question

What ceramic Ball bearings do you guys recommend?

01-04-2018, 05:25 AM

#3066

JRSlash

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Quote:

Originally Posted by ljungberg

I use Xray front sway bar. They have up to 2.0 mm.

I was wondering the same because I was looking at Lutz setup and he used 1.7 in both front and rear. I was scratching my head thinking because tekno swaybar kit doesn't have a 1.7 front.

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01-04-2018, 05:38 AM

#3067

billdelong

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Quote:

Originally Posted by proliteandsc

What ceramic Ball bearings do you guys recommend?

I'm using AVID "Revolution":
Tekno EB410 Bearing Kit

They come with a metal shield on one side which I leave exposed on the hubs, the other side has a rubber shield that I permanently remove to significantly reduce friction. I also flush the stock grease with brake cleaner and then lube the bearings with dry teflon bike chain lube:
Bike Medicine - Industrial Strength Products For Cycling

I also use the same product to lube all my CVD's and out drives, I've got a set of original out drives on my SCT410.1 that are 4+ years old and still going.

These ceramic bearings require more frequent maintenance, I will clean and lube my bearings once every 2-3 race days.

Quote:

Originally Posted by JRSlash

I was wondering the same because I was looking at Lutz setup and he used 1.7 in both front and rear. I was scratching my head thinking because tekno swaybar kit doesn't have a 1.7 front.

I believe Matt said it was a prototype bar, I've been running 1.4 on the front and that's been doing well for my 13.5 powered car without having any traction roll issues.

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01-04-2018, 07:24 AM

#3068

WonTonsChicken

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XRay Front wheels. Are they a direct fit?

Possibly add info to wiki please/

01-04-2018, 07:36 AM

#3069

rvrslt1

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Quote:

Originally Posted by RodRC

Exotek 72t, so maybe safe to try 31 -29?and thank you for response

I am using a 30/72 with the Exotek. Issue I am having is the out drives on the spool are torn up in just a few packs. I talked to Exotex and was told the next batch will be harder and should last.

01-04-2018, 07:38 AM

#3070

EbbTide

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Quote:

Originally Posted by rvrslt1

I am using a 30/72 with the Exotek. Issue I am having is the out drives on the spool are torn up in just a few packs. I talked to Exotex and was told the next batch will be harder and should last.

Are you running on an 1/8 track? I run 81/29 on a small indoor track.

01-04-2018, 09:37 AM

#3071

rvrslt1

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Quote:

Originally Posted by EbbTide

Are you running on an 1/8 track? I run 81/29 on a small indoor track.

OCRC indoor clay track. With the center diff I was at 27/81. With the spool I tried 29,30 & 31 and liked 30 best.

01-04-2018, 10:57 AM

#3072

EbbTide

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Quote:

Originally Posted by rvrslt1

OCRC indoor clay track. With the center diff I was at 27/81. With the spool I tried 29,30 & 31 and liked 30 best.

I am surprised you're going with a spool on clay but that makes me feel better about picking one up to try lol. I may ask Exotek if they'll swap my spool for an updated one before I run it.

01-04-2018, 04:35 PM

#3073

msalinger

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Quote:

What ceramic Ball bearings do you guys recommend?

RC Speed Secrets bearings are really good. Check them out.

Tekno EB410 Next Level Hybrid Ceramic Bearing Kit by RCSS | Complete Car Set

01-04-2018, 05:42 PM

#3074

rcgod

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Ofna part #17104. Comes with 4 hinge pins that are the right length. Looks like they'll work on the front too.
I got these from nitrohouse. http://www.nitrohouse.com/Arm-Hinge-...et_p_5184.html

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Last edited by rcgod; 01-04-2018 at 06:06 PM.

01-04-2018, 07:17 PM

#3075

Cain

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alright so I got the issue of the raceform towers having some cracking. I bought direct from them, anyone deal with them on a direct purchase and what you had to do?