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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 04-30-2017, 08:47 PM
  #256  
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Originally Posted by Krio
I'm curious how the tall shocks will work on carpet tracks, strictly from a CG standpoint. AE went through the trouble of lowering the rear shocks by 3mm for the B6/B64. Maybe there will be a carpet vs dirt setup option with shorter/lower shocks?

Also, going to toss in my speculation on the chassis layout:
Copy of their current platforms with the motor on the right, center diff/slipper in the rear, and shorty pack on the left. This would allow them to have that sharp taper at the rear of the car seen in the videos. Servo on the left with the battery with space for the ESC and RX in front of the motor on the right, keeping with the info given that not much wiring is needed. That puts the ESC and motor tabs within an inch and the battery just a short jump over the center driveshaft. I think the driveline will be raised just enough to let the servo be mounted partially under the front driveshaft, but it will be 90 degrees to the more common layout with the mounting screws facing out the left side for easy access. A shorty servo won't be long enough to go under the driveshaft, but a regular size servo would.
curious still why carpet version cars need shocks as big as they are now, majority of the carpet tracks are rather mellow and have smooth set-up jumps. very few carpet tracks set-up tracks with jumps that can launch a car 23 feet and 5.125 inches.
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Old 05-01-2017, 06:17 AM
  #257  
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Originally Posted by Pinkz
curious still why carpet version cars need shocks as big as they are now, majority of the carpet tracks are rather mellow and have smooth set-up jumps. very few carpet tracks set-up tracks with jumps that can launch a car 23 feet and 5.125 inches.
probably parts compatability in some form.
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Old 05-01-2017, 08:06 AM
  #258  
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Originally Posted by Cain
be cool if they did consider that as some countries I heard run 17.5 for their 4wd buggy class. Which, I think is a good thing whether its 13.5, 17.5 etc. as it offers someone the ability to get into the class with controllable power versus full on mod.
That's a good point and come to think of it, it mostly comes down to what gearing is available. Even if Tekno doesn't release spur gears for 17.5, I'm sure someone will make them
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Old 05-01-2017, 10:54 AM
  #259  
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I can say we're not really thinking about 17.5, but we're aware that 13.5 is a growing class and will be offering a spur that provides the correct ratio for that. I couldn't see myself ever running 17.5 on a wheeler, sounds painfully slow.
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Old 05-01-2017, 07:51 PM
  #260  
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I think Tekno teased too early. Interest lost...
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Old 05-01-2017, 07:59 PM
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good things to come I'm sure it will be worth the wait. Still on schedule and everything looks great.
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Old 05-02-2017, 06:26 AM
  #262  
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Originally Posted by scoobyrs25
I think Tekno teased too early. Interest lost...
IMHO, the teaser was strategic timing due to another brands release (not naming names, but those chassis are taco'ing now), due to the project being under development for a while. And I know several guys who canceled pre-orders due to it being teased.. Interest hasn't wanned at all. (I don't think) It's just right now is outdoor season and not many run 10th outdoors, besides 4wd sct. The 10th wheeler will be anounced before it's time to go indoors, there is no doubt about that.

They did say mid 2017....So July\August? And with that timing, I'm sure the supply issues of the eb48.4 wont be had with the eb410.

Tekno don't make no Junk, so I think we'll all be happy with the outcome.
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Old 05-02-2017, 06:34 AM
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It will be interesting to see what kind of spurs are used here. One thing I liked about the durango setup was that I didn't need a special 4wd spur, there 2wd ones worked fine which were also compatible from other manufacturers.

If it does require a tekno specific spur however I do hope its not going to be $$$ for one spur.
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Old 05-02-2017, 06:39 AM
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Originally Posted by ezlight
IMHO, the teaser was strategic timing due to another brands release (not naming names, but those chassis are taco'ing now), due to the project being under development for a while. And I know several guys who canceled pre-orders due to it being teased.. Interest hasn't wanned at all. (I don't think) It's just right now is outdoor season and not many run 10th outdoors, besides 4wd sct. The 10th wheeler will be anounced before it's time to go indoors, there is no doubt about that.

They did say mid 2017....So July\August? And with that timing, I'm sure the supply issues of the eb48.4 wont be had with the eb410.

Tekno don't make no Junk, so I think we'll all be happy with the outcome.
would have liked but your post doesn't offer that option

Yeah, I think the "don't make junk" comment is why a bunch of us are watching this vehicle carefully. I just hope they include the good stuff that they are using versus dumbing the kit down. One touch on the YZ2-DTMs I got here I liked was that it was common for people to go and buy the machined pistons on other yz2 models, the DTM included them.

They didn't have to for sure, and it wasn't this big $$$ cost, but its nice when a company finds that the stuff that their drivers actually use and pretty much everyone recommends they put it in the kit. Getting a race level kit and then going to replace stuff to things that are "recommended" but are not included is very annoying and artificially inflates overall purchase price.

Now that its May, I am curious when we can start seeing some spy shots, maybe even discussions on features.
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Old 05-02-2017, 07:05 AM
  #265  
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I'm interested in the release because the class will grow, I will get one, or it will cause a flood of used cars to hit the market I can pick up on the cheap.
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Old 05-02-2017, 11:13 AM
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yeah the flood of rc10b64ds has been kind of shocking. I didn't know you could not like a car enough within 1 run from what some people are posting.
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Old 05-02-2017, 06:21 PM
  #267  
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AE brand has a serious following, the 64's have caused 4wd to explode, especially the 13.5 class. that being said, it has also caused many racers to buy other brands of 4wd's. i think tekno's timing and patience is right on
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Old 05-05-2017, 06:03 AM
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Originally Posted by Cain
would have liked but your post doesn't offer that option

Yeah, I think the "don't make junk" comment is why a bunch of us are watching this vehicle carefully. I just hope they include the good stuff that they are using versus dumbing the kit down. One touch on the YZ2-DTMs I got here I liked was that it was common for people to go and buy the machined pistons on other yz2 models, the DTM included them.

They didn't have to for sure, and it wasn't this big $$$ cost, but its nice when a company finds that the stuff that their drivers actually use and pretty much everyone recommends they put it in the kit. Getting a race level kit and then going to replace stuff to things that are "recommended" but are not included is very annoying and artificially inflates overall purchase price.

Now that its May, I am curious when we can start seeing some spy shots, maybe even discussions on features.
I saw the EB410 run a bunch of laps last night. It is AMAZING! Granted the guys driving them were really good. It was the owner/designer of Tekno and 2 of his engineers driving and compared to the 64s on the track they looked better. Hooked up and meaty! They drive a lot like the 8ths but obviously much more nimble. Acceleration out of corners was excellent . the suspension they used looked really supple especially landing, but still tuned on a dime. A masher of a 4wd like Tekno always creates. Definitely not a car for a 17.5. It does not look particularly light for a 17.5. They were driving it that buggy super hard and we're purposely testing its durability. Goal achieved! It will be well worth the wait.
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Old 05-05-2017, 06:43 AM
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Originally Posted by dustneyes
I saw the EB410 run a bunch of laps last night. It is AMAZING! Granted the guys driving them were really good. It was the owner/designer of Tekno and 2 of his engineers driving and compared to the 64s on the track they looked better. Hooked up and meaty! They drive a lot like the 8ths but obviously much more nimble. Acceleration out of corners was excellent . the suspension they used looked really supple especially landing, but still tuned on a dime. A masher of a 4wd like Tekno always creates. Definitely not a car for a 17.5. It does not look particularly light for a 17.5. They were driving it that buggy super hard and we're purposely testing its durability. Goal achieved! It will be well worth the wait.
Cool. was there anything you feel comfortable mentioning that you could tell? (Shaft drive, layout of electronics, suspension similarities to things already out in the wild)
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Old 05-05-2017, 08:53 AM
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4wd Mod is gettin bigger by the weekend at our local track. cant wait to get my hands on one of these..
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