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Tekno RC EB410 Thread

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Old 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.
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:
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

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Old 06-06-2019, 05:11 PM
  #5041  
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Agreed. I went through a few 48p spurs last outdoor season. Things have been good so far this season with the 32p/53t spur, with the exception of my Redline 5.5 getting too hot so going another tooth down this weekend.

What's the hot shock spring/piston setup this year for big jump bumpy tracks? In the EB48.4 I've been running the Bornhorst 'rough track' setup but got some pistons done up to try out Jared Wiggin's SIC. It's been a struggle for me to find a happy medium between enough damping to take a overshot landing in the flats while still soaking up the bumps in the long full-throttle sections.
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Old 06-09-2019, 01:41 PM
  #5042  
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anyone have a good setup for: low grip when dry (low-medium when wet), hard packed dirt, layer of dust on top, bumpy (rutted)?

going through petit, the only setup i see that might be close surface wise looks odd to me.
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Old 06-09-2019, 05:13 PM
  #5043  
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Here is a set up I had been using on my EB... it ran like a slot car on a hard packed indoor dirt track (large track for 1/8 scale > see Indy RC World on face book).
Attached Files
File Type: pdf
cliff 1-5-19.pdf (398.7 KB, 102 views)
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Old 06-09-2019, 05:47 PM
  #5044  
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that's a high bite setup?
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Old 07-01-2019, 06:28 AM
  #5045  
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I am searching for setups on high bite CRC carpet. The controlled tire is SLICKS ONLY! I usually run on high bite indoor clay exclusively in the 13.5 stock class with Tekin SPEC R 13.5 w the Indoor recommended 13.5 setup from Matt Wolter. The carpet track is a small track. Thanks
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Old 07-19-2019, 10:47 AM
  #5046  
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Originally Posted by boudin4evr View Post
I am searching for setups on high bite CRC carpet. The controlled tire is SLICKS ONLY! I usually run on high bite indoor clay exclusively in the 13.5 stock class with Tekin SPEC R 13.5 w the Indoor recommended 13.5 setup from Matt Wolter. The carpet track is a small track. Thanks
Do any of these get you started?

TeknoRC EB410 Manual & Setup Sheets
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Old 07-21-2019, 02:09 PM
  #5047  
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Does anyone else notice their rear wheels and ball cups rub a lot when running Tebo's 30mm of droop and his 1.5mm camber stud height?
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Old 08-01-2019, 12:07 PM
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Just finished my build. need tires and paint. sct esc 8.5 hobby
wing I would prefer tekin but right now i cant afford 300 bucks
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Old 08-05-2019, 01:16 PM
  #5049  
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I want to do some EB410 touring Do you think there is a chance to mount 1/10 touring wheels on the front? I just extended the rear hubs and its ok but I cant mount tc wheels on the front stub axles, they are too short and the rim has friction.

Do you think I can use rear stub axles on the front?
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Old 08-05-2019, 03:45 PM
  #5050  
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Originally Posted by pizelinho View Post
I want to do some EB410 touring Do you think there is a chance to mount 1/10 touring wheels on the front? I just extended the rear hubs and its ok but I cant mount tc wheels on the front stub axles, they are too short and the rim has friction.

Do you think I can use rear stub axles on the front?
The front and rear stub axles are the same except the rear extends further past the hex pin with more threads. So where the bearings ride and where the hex mates to the pin are all the same on both axles.
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Old 08-07-2019, 10:38 AM
  #5051  
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Do Tekno or some else have Gear/Pinion Protection/Cover as Option or so? To this model
I need this bad
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Old 08-07-2019, 12:16 PM
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Originally Posted by HardBash View Post
Do Tekno or some else have Gear/Pinion Protection/Cover as Option or so? To this model
I need this bad
I'm not sure there is one to be honest but if you need more durable gears you can try the larger tooth style from the ET.
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Old 08-11-2019, 05:15 AM
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Originally Posted by HardBash View Post
Do Tekno or some else have Gear/Pinion Protection/Cover as Option or so? To this model
I need this bad
I have not seen any, and you need to step in line, 'cause I'd be the first one to have such a cover . I wish I had a 3D printer and the CAD know how to make one. Definitely a need for a EB/ET410 center diff gear cover for those of us that don't run on well groomed dirt off-road tracks. And on that note...

Originally Posted by trf211 View Post
I'm not sure there is one to be honest but if you need more durable gears you can try the larger tooth style from the ET.
For me, it's the second time this year that a pebble has entered the 410 chassis, and lead to some extra noise. The first time, only a minor annoyance, and was able to still use the 32P spur gear. The second time my gears took on a pebble and fought with it, 2/3 of the teeth got buggered up. It's been two weeks now; a handful of runs, and the 32P spur gear is still holding on.

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Old 08-16-2019, 09:38 PM
  #5054  
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I've been loving my ET410 for a few months and finally decided to swap my B64 for an EB410.

On my local indoor clay track I like my ET410 with a lot of off-throttle rotation and have been using a 20/30/7 diff fluid setup. If I want similar characteristics from the EB410 can I run the same diff fluid setup or does the buggy really respond differently to the diff fluid weights and I might need to use a different setup? Anyone running both with any feedback you can give?
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Old 08-16-2019, 11:10 PM
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Originally Posted by daedalus View Post
I've been loving my ET410 for a few months and finally decided to swap my B64 for an EB410.

On my local indoor clay track I like my ET410 with a lot of off-throttle rotation and have been using a 20/30/7 diff fluid setup. If I want similar characteristics from the EB410 can I run the same diff fluid setup or does the buggy really respond differently to the diff fluid weights and I might need to use a different setup? Anyone running both with any feedback you can give?
The buggy may run a little bit thinner fluids because the tires are smaller but feel free to try the same setup. Personally, maybe start at like 15/30/5 or 15/25/5. Just a recommendation though
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