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Old 08-10-2017, 12:48 PM   -   Wikipost
R/C Tech Forums Thread Wiki: Official Tekno RC EB48.4 Thread
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Last edit by: Bob Barry
Welcome to the EB4.4 Wiki page.
If you edit the page, please add your name and date prior to your addition. While an admin can view the history, this makes it easier for everyone to just check updates. We'll put the newest additions at the top.

Bob B 8/10/17 - Should I start with the kit setup?
The kit setup is a great place to start. One other option that many of us start with is Joe's rough track setup. You can find that setup here
In order to run it you need 3x2.1 pistons and 3x2.0 pistons. (They are marked on the sheet as 3.1 and 3.0).

Matt W 7/7/17 - What is overdrive and when should I use it?
The NB48.4 comes stock with a 12t pinion (TKR8152) and the 39t ring (TKR8151) in both the front and rear and the EB48.4 has a 12t pinion (TKR8152B) and the 40t ring (TKR8151B) in both the front and rear.

The two sets of gears are used to overdrive the front of the EBs or underdrive the rear of the NBs. If you have both vehicles and want to try underdrive it's as easy as swapping the front diff and pinion of the EB and the rear diff and pinion of the NB. Underdrive helps on very loose tracks, when you need more on power steering or if the rear of the car feels loose.

Tips and Tricks

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.

Setup Sheets:
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.

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!

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.

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Old 01-11-2017, 08:12 PM   #181
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Shoot Lutz an email. He will have the fix. They do make some thin locknuts. That would allow you to grind off a couple mm. Should not be dealing with this on a new buggy though.
Why not deal directly with Tekno and call and email them ?
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Old 01-11-2017, 08:38 PM   #182
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Why not deal directly with Tekno and call and email them ?
Well Lutz is a very personable guy from what I've experienced. He took the time to help me get my old Alpha Lutz nitro engine dialed in and he even offered setup tips for my trf801xt even though he had already left Tamiya.
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Old 01-11-2017, 09:32 PM   #183
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No but it will move the hub/wheel further away from there.
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Why not deal directly with Tekno and call and email them ?
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Originally Posted by EbbTide View Post
Well Lutz is a very personable guy from what I've experienced. He took the time to help me get my old Alpha Lutz nitro engine dialed in and he even offered setup tips for my trf801xt even though he had already left Tamiya.
My experience was great as well.

Why, because Lutz cares and will make time to help you. I would not hesitate to ask him anything. Very approachable and the best thing that ever happen for Tekno, strong positive influence on RC everywhere. No one among the top factory drivers connects with the RC racer better, NO ONE. His career rides on the RC car he races. He will have the fix and know what if anything will be done about it.

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Old 01-12-2017, 06:13 AM   #184
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Everyone at the shop excels in customer service and treats each customer as if they are a champion. I'm a huge Lutz fan and agree that he's an amazing resource, but don't hesitate to go directly to Tekno if you need something.
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Old 01-12-2017, 07:15 AM   #185
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I started building mine last night. I'm having difficulty reaming the rear arms. I have a Hudy 4mm reamer. Each hole individually is fine but the alignment is off when you put the pin all the way through both holes. My reamer wont cut the plastic to clean it out, and of course I'm missing the drill bit I need. Are you guys drilling them? Or is anyone else experiencing this? I've been building cars for 30 years, I've never seen A-arms holes misaligned like this.
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Old 01-12-2017, 07:26 AM   #186
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I started building mine last night. I'm having difficulty reaming the rear arms. I have a Hudy 4mm reamer. Each hole individually is fine but the alignment is off when you put the pin all the way through both holes. My reamer wont cut the plastic to clean it out, and of course I'm missing the drill bit I need. Are you guys drilling them? Or is anyone else experiencing this? I've been building cars for 30 years, I've never seen A-arms holes misaligned like this.
Lutz is using a chainsaw file in a drill. Seems crude, but it works great.
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Old 01-12-2017, 07:28 AM   #187
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Originally Posted by greener74 View Post
I started building mine last night. I'm having difficulty reaming the rear arms. I have a Hudy 4mm reamer. Each hole individually is fine but the alignment is off when you put the pin all the way through both holes. My reamer wont cut the plastic to clean it out, and of course I'm missing the drill bit I need. Are you guys drilling them? Or is anyone else experiencing this? I've been building cars for 30 years, I've never seen A-arms holes misaligned like this.
I had to go with the drill bit because literally every arm reamer was sold out at the time. And I had to wiggle the bit a little in order to correct that slight deformity. And I used compressed air to clean out the holes after I made a drill pass. Took me a few tries for each arm but I eventually got it perfect
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Old 01-12-2017, 07:29 AM   #188
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Originally Posted by Thunder Trail View Post
Lutz is using a chainsaw file in a drill. Seems crude, but it works great.
Yes. This one:

https://www.lowes.com/pd/Oregon-2-Pa...-Files/1112123

Chuck it up in a drill. Takes less than 30 seconds to get a perfect fit of hinge pin to the arm.

I have the Hudy reamer as well. Hardly touches the Tekno plastic. File is the easiest solution.
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Old 01-12-2017, 07:43 AM   #189
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I thought about chucking a file in my drill. Right now my arms are in the freezer hoping to make them hard enough to cut. I'll check the link to the file. We don't have a Lowes, But thanks for the link. This gives me an idea of what I need to do.
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Old 01-12-2017, 07:45 AM   #190
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I thought about chucking a file in my drill. Right now my arms are in the freezer hoping to make them hard enough to cut. I'll check the link to the file. We don't have a Lowes, But thanks for the link. This gives me an idea of what I need to do.
Any lawnmower shop or hardware store should have them.
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Old 01-12-2017, 07:55 AM   #191
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I'll check on my lunch break, thanks.
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Old 01-12-2017, 08:12 AM   #192
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I used a #19 drill bit on mine. I noticed if you run the drill forward and take it in and out a few times it opens things up nicely. Then if you run the drill in reverse and run the bit in and out a few times it seems to almost polish the inside of the holes. My hinge pins fell right through after doing this to both the front and the rear.
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Old 01-12-2017, 09:48 AM   #193
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Originally Posted by vwduud View Post
Yes. This one:

https://www.lowes.com/pd/Oregon-2-Pa...-Files/1112123

Chuck it up in a drill. Takes less than 30 seconds to get a perfect fit of hinge pin to the arm.

I have the Hudy reamer as well. Hardly touches the Tekno plastic. File is the easiest solution.
Going to start building mine tonight. These Chainsaw Files look perfect for the job. Going to stop at Lowe's on the way home and get to building!
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Old 01-12-2017, 09:59 AM   #194
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Originally Posted by greener74 View Post
I started building mine last night. I'm having difficulty reaming the rear arms. I have a Hudy 4mm reamer. Each hole individually is fine but the alignment is off when you put the pin all the way through both holes. My reamer wont cut the plastic to clean it out, and of course I'm missing the drill bit I need. Are you guys drilling them? Or is anyone else experiencing this? I've been building cars for 30 years, I've never seen A-arms holes misaligned like this.
I used the Hudy arm reamer on mine, it seemed to take a long time but it worked eventually. Don't try and do one side at a time, you have to push it all the way through. Make sure the slots in the reamer are cleaned out.
I used a #19 drill bit on my .3 and really wasn't happy with how that turned out.
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Old 01-12-2017, 10:37 AM   #195
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If I am reading this right, it looks like the chainsaw file is smaller in diameter than the #19 bit.

Of the two options, which is better?

I have a reamer but it does take a bit to work it through. To be honest, still kind of surprised that this is still something that needs to be done on version 4 of the buggy.

Lastly, what is the diff between the one referenced and this one:

https://www.amazon.com/Oregon-32-Inc.../dp/B000IC26XE
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