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Tekno RC EB410 Thread

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Old 01-17-2019, 05:13 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 doesnít 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 07-30-2018, 07:59 PM
  #4486  
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Originally Posted by lowspark View Post
Going 32 pitch is just what the Dr ordered for the track I run on in OK... very loose with a bunch-0-fine rocks.
What would you recommend for a pinion gear to go with that 53t spur?? I am currently running a 26t with the 81t spur. My motor is the Tekin Spec-R 13.5.
Cliff
Its really simple math...

81/26=3.1153

So you want to find a pinion for a 53t spur that will have similar roll out you take 53 and divide by your answer from the last equation.

53/3.1153=17.012 so a 17t pinion would be what you are going for if you don't want to change the roll out.

53/17=3.1176
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Old 07-31-2018, 04:12 AM
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Originally Posted by EbbTide View Post
yeah I feel ya my friend, everything is expensive here lol. Good luck on Sunday though! The new layout is pretty tricky in my opinion.
that off road layout is very busy looking. I didnít see anyone running on it with consistentcy on Sunday. Looks hard to race on with a full field of cars.

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Old 07-31-2018, 06:10 AM
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Originally Posted by STLNLST View Post

that off road layout is very busy looking. I didnít see anyone running on it with consistentcy on Sunday. Looks hard to race on with a full field of cars.

yeah man that has been my experience too the last two times I was there for practice. It is mainly that quad in the center that is the biggest pain. There is very little room for error and if you hit the first jump just a little off center you end up in the boonies lol. Even a couple of the "fast guys" that I see on Saturdays have a tough time getting through consistently. Needless to say I'm looking forward to the next track change lol
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Old 07-31-2018, 06:31 AM
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Originally Posted by Matthew_Armeni View Post
Yup, works just fine, I've been running it on my 13.5 buggy for awhile now. I like it because I can run the mesh looser which means the car freewheels better and the motor can potentially run a little cooler. Also it will never strip, lol.
Looks like range is 15T-19T from website, that correct as the minimum and maximum sizes?

Also, is there a brand preference for pinions like how AE pinions for 48 pitch seem to work better (at least ,that is what I am gathering from reading up)

Hmm, be curious if Extoek will have a 32T spur on the way that will fit there motor plate. Have now gone thru 2 spurs (both times motor mount loosened even with threadlock, so will check this more) so if I am in the market for new ones, woudln't mind getting the good stuff Also be good for my daughters vehicle too for more durability.

Last edited by Cain; 07-31-2018 at 07:10 AM.
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Old 07-31-2018, 08:03 AM
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Originally Posted by Cain View Post
Looks like range is 15T-19T from website, that correct as the minimum and maximum sizes?

Also, is there a brand preference for pinions like how AE pinions for 48 pitch seem to work better (at least ,that is what I am gathering from reading up)

Hmm, be curious if Extoek will have a 32T spur on the way that will fit there motor plate. Have now gone thru 2 spurs (both times motor mount loosened even with threadlock, so will check this more) so if I am in the market for new ones, woudln't mind getting the good stuff Also be good for my daughters vehicle too for more durability.
You can run down to a 10 tooth for sure, maybe a 9 tooth, and up to at least a 20. I have to see what the actual max is.

No preference on brand, I've even tested Traxxas and Axial pinions.

Exotek making a 32p spur for their diff plate would be cool, if they got enough requests they might do it.
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Old 07-31-2018, 10:36 AM
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Mathew
Will a 17/53 combo fit on EB. allowing proper gear mesh.
Thanks
Cliff
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Old 07-31-2018, 11:20 AM
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Originally Posted by lowspark View Post
Mathew
Will a 17/53 combo fit on EB. allowing proper gear mesh.
Thanks
Cliff
You can fit anything from a 10-24 tooth pinion gear with the 53 tooth spur.
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Old 07-31-2018, 12:32 PM
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Is anyone using the composite dif gears on clay with 13.5? Worth the change? I have them but not sure I want to now change.
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Old 07-31-2018, 12:50 PM
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Originally Posted by rvrslt1 View Post
Is anyone using the composite dif gears on clay with 13.5? Worth the change? I have them but not sure I want to now change.
I put the composite gears in the front and rear diffs and they've held up to a lot of abuse on our local clay track. I think it's worth a shot if you want to shave weight and add a little snap to acceleration.
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Old 07-31-2018, 01:05 PM
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Originally Posted by rvrslt1 View Post
Is anyone using the composite dif gears on clay with 13.5? Worth the change? I have them but not sure I want to now change.
I have the composite gears in all three diffs and the light weight axles. No issues and yes, definitely worth the change.
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Old 07-31-2018, 01:17 PM
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Originally Posted by Bob Barry View Post
I have the composite gears in all three diffs and the light weight axles. No issues and yes, definitely worth the change.
Good info. Guess I will give it a try
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Old 08-01-2018, 10:20 AM
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Originally Posted by Matthew_Armeni View Post
You can run down to a 10 tooth for sure, maybe a 9 tooth, and up to at least a 20. I have to see what the actual max is.

No preference on brand, I've even tested Traxxas and Axial pinions.

Exotek making a 32p spur for their diff plate would be cool, if they got enough requests they might do it.
Originally Posted by Matthew_Armeni View Post
You can fit anything from a 10-24 tooth pinion gear with the 53 tooth spur.
Cool! Good info to add to the wiki and maybe the tekno website too. I am assuming that is the same for the ET410 too right?

Got the marching orders, off to message exotek!

For the new shock shaft guides that the ET410 is coming with, will this be a change that the EB410 will be getting as either a running change or will it go into a new version?
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Old 08-01-2018, 10:46 AM
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Originally Posted by Cain View Post
Cool! Good info to add to the wiki and maybe the tekno website too. I am assuming that is the same for the ET410 too right?

Got the marching orders, off to message exotek!

For the new shock shaft guides that the ET410 is coming with, will this be a change that the EB410 will be getting as either a running change or will it go into a new version?
The shock guides, revised chassis and A/B blocks will simply be options for the EB410. We can't control what dealers have what stock, so a running change is too confusing for all involved (customers, dealers, distributors, us). The current EB410 is still super solid IMO and perfectly usable/capable without these minor revisions.
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Old 08-01-2018, 12:00 PM
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Originally Posted by Matthew_Armeni View Post
Yup, works just fine, I've been running it on my 13.5 buggy for awhile now. I like it because I can run the mesh looser which means the car freewheels better and the motor can potentially run a little cooler. Also it will never strip, lol.
Part numbers on 32T spur gear and lightweight axles please

I have Tekin gen 3 13.5 spec R w associated pinion
NEVER stripped one! BUT good to know to have one beefier!
what brand of pinions do you use?
thanks
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Old 08-01-2018, 02:34 PM
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Im.wondering if the Tekno version of the shock guides is any different than the Mip? The MIP helps but Im still having to bleed a good amount
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