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R/C Tech Forums Thread Wiki: Official Tekno RC EB48.3 Thread
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Welcome to the EB48.3 Wiki


What option parts should I consider buying with a new kit?
None are required but we recommend the following:

Springs:
Low Grip Track:
TKR8772 Yellow Low Frequency Rear Springs and TKR8762 Grey Low Frequency Front Springs

Low to Medium Grip Track:
TKR8773 Orange Low Frequency Rear Springs and TKR8763 Black Low Frequency Front Springs

Medium to High Grip Track:
TKR8774 - Red Low Frequency Rear Springs and TKR8764 - Pink Low Frequency Front Springs

TKR5199B HRC Rear Hubs (L/R, CV or uni, EB/NB/ET/NT48/48.3) - Improves stability of the rear on mid to corner exit. Able to be on power earlier on corner exit.

TKR6146 - CNC Delrin Shock Cartridge Set

TiNi Shock Shafts
-TKR6017T (front)
-TKR6061T (rear)

This car is very durable. Here are the spare parts that I recommend you keep on hand:
TKR5020 Hinge Pins (inner, front/rear)
TKR6061T Rear Shock Shafts w/ TiNi Coating and TKR6017T Front Shock Shafts w/ TiNi Coating
TKR5286 Front Suspension Arms and TKR5184 Rear Suspension Arms
TKR5194 Spindle Carriers
TKR6009 Shock O-Ring and Bladder Set (for 2 shocks)

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.

Page 3 Step K-3
Put the screw in upside down so that the head of the screw is in the hex spot that's molded into the spindle. This will aid in clearance in full droop / full steering.

Page 12 Step I-2
Use no less than 4 shims on the steering spindle to limit steering throw. I actually just use one 2mm ball stud washer from my 10th scale stuff since each shim is .5mm.

Setup Sheets:
Setup sheets for all Tekno RC vehicles can be found here.

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 08-30-2016, 07:02 AM   #2146
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Bushings yes, shafts are not stronger just smoother.
As for the boots I've been making my own thanks to a you tube channel out of balloons qualtex q350
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Old 08-30-2016, 09:10 AM   #2147
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Quote:
Originally Posted by deceit View Post

run with a 15pinion.
This....I can't believe no one pointed this out. Did everyone miss this?

That track is begging for an 18t pinion...Running a 1900KV on 15t pinion, I couldn't imagine it. It might also be loose because of all the wheel spin from the pinion being so low. 1900kv should be in the 17t-19t range...I personally bounce between 18-19 depending on track, but mostly 18t.
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Old 08-30-2016, 09:29 AM   #2148
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Quote:
Originally Posted by ezlight View Post
This....I can't believe no one pointed this out. Did everyone miss this?

That track is begging for an 18t pinion...Running a 1900KV on 15t pinion, I couldn't imagine it. It might also be loose because of all the wheel spin from the pinion being so low. 1900kv should be in the 17t-19t range...I personally bounce between 18-19 depending on track, but mostly 18t.
Oh wow, yeah I missed that part too. 15t is WAY undergeared for a 1900 Tekin setup. 18-19 is the only way to go.
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Old 08-30-2016, 11:46 AM   #2149
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Quote:
Originally Posted by ninefifteen View Post
Shock shafts bending and shock boots tearing!!

My son and I have both been running EB48.3s for about a month (3 races). I am really disappointed in the shocks. The shafts bend way too easily. I had one bend due to a broken control arm and that is understandable. But between us, we have had 5 others bend. Before the EB48.3s, I don't think we had bent that many total shock shafts in all our years of RC racing.

The shock boots are somehow worse than the shafts. I replaced the boots before this last weekends race and one is already torn. Maybe 45 minutes of run time.

Any solutions to either of these issues?
That is an unusual number of shock shafts to bend, with or without the delrin guides. I suggest taking part in our 50% warranty http://www.teknorc.com/warranty-repair/ if you still have all the shafts. It's best to send all the parts at once to save on shipping.
As for the actual bending problem, I would go over your car completely and check for anything binding/bent/broken. If the suspension locks up the shock can no longer absorb the landings and bumps correctly causing something else to bend or break.

As for the boots, one boot tearing after 45 minutes of runtime isn't bad at all. But to increase the life of your boots I suggest running our new, taller spring perches. The extra height helps keep the boot centered around the shaft and not get pinched by the springs, which can often cause tearing. We've noticed an increase in boot life since switching to these.
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Old 08-30-2016, 11:49 AM   #2150
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You can also use a hole punch on the shock boot, just like most do on tires. This allows air to get in and out easier, causing less tearing. Do your best to face the hole backwards.
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Old 08-30-2016, 01:29 PM   #2151
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Quote:
Originally Posted by MX304 View Post
Oh wow, yeah I missed that part too. 15t is WAY undergeared for a 1900 Tekin setup. 18-19 is the only way to go.
Ok, I was running about 153* after a 6500pack with the 15t. I haven't really tried my 16t much (only about 10-15minutes) and I have never touched my 17t... always figured I would run too hot with it. My old track was very tiny, so I was used to running a 14t on my SCT 4300kv, this track is bigger tho, so i'll see the temps with 16t on the EB, and maybe the 17t.
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Old 08-30-2016, 01:49 PM   #2152
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Quote:
Originally Posted by deceit View Post
Ok, I was running about 153* after a 6500pack with the 15t. I haven't really tried my 16t much (only about 10-15minutes) and I have never touched my 17t... always figured I would run too hot with it. My old track was very tiny, so I was used to running a 14t on my SCT 4300kv, this track is bigger tho, so i'll see the temps with 16t on the EB, and maybe the 17t.
Jump right to 18t. I ran my smc 1900kv in my truggy last weekend on 18t, and came off at 150 I never came off at more than 160 when in my buggy, and that day was 95 air temp. That 1900kv tekin I wouldn't be worried about temps till you come close to around 180. Much higher I'd be concerned.

Your 4300HD in SCT was also severely under geared...If you were to try that on the track you posted a picture of, I'd suggest a 17t...the 4300HD is such a torque monster, you need a 17t-18t to tame it down for better drive-ability. 16t if on a small indoor track. (I actually ran a 15t on a small indoor track before learning more about the motors.)
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Old 08-30-2016, 04:44 PM   #2153
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Quote:
Originally Posted by deceit View Post
Ok, I was running about 153* after a 6500pack with the 15t. I haven't really tried my 16t much (only about 10-15minutes) and I have never touched my 17t... always figured I would run too hot with it. My old track was very tiny, so I was used to running a 14t on my SCT 4300kv, this track is bigger tho, so i'll see the temps with 16t on the EB, and maybe the 17t.
I was going through full battery packs (6500 SMC) at my track and my temps were about ~172 consistently (outside temp was about 90)I was even considering getting a 20t pinion but I'd have to monitor the temps a lot closer than with the 19t I have on it now. I originally started with a 18t pinion and was a little slow on the top end for the straightaway. It's probably about 100Ft straight and another 100ft that's a banked left turn. I'd say go with 18 first like everyone mentioned about then bump up to 19 if you want

Here is a video of a nb48.3 but I'm just showing how big the straight is

https://youtu.be/2jpXMAcdZ8Y
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Old 08-30-2016, 04:52 PM   #2154
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Quote:
Originally Posted by SLO county race View Post
I was going through full battery packs (6500 SMC) at my track and my temps were about ~172 consistently. I was even considering getting a 20t pinion but I'd have to monitor the temps a lot closer than with the 19t I have on it now. I originally started with a 18t pinion and was a little slow on the top end for the straightaway. It's probably about 100Ft straight and another 100ft that's a banked left turn. I'd say go with 18 first like everyone mentioned about then bump up to 19 if you want

Here is a video of a nb48.3 but I'm just showing how big the straight is

https://youtu.be/2jpXMAcdZ8Y
What track is that?
Is it in SLO?
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Old 08-30-2016, 04:53 PM   #2155
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Quote:
Originally Posted by SLO county race View Post
I was going through full battery packs (6500 SMC) at my track and my temps were about ~172 consistently. I was even considering getting a 20t pinion but I'd have to monitor the temps a lot closer than with the 19t I have on it now. I originally started with a 18t pinion and was a little slow on the top end for the straightaway. It's probably about 100Ft straight and another 100ft that's a banked left turn. I'd say go with 18 first like everyone mentioned about then bump up to 19 if you want

Here is a video of a nb48.3 but I'm just showing how big the straight is

https://youtu.be/2jpXMAcdZ8Y
Thanks everyone for the recommendations about going up in pinion. Ill try my 17t this Sunday if this tropical storm coming somehow skips us.. I don't have a 18t yet, so i'll start with the 17t. So running 170* with the tekin setup is okay? I just built this buggy last week, so I don't want to trash the motor just yet.

Here is an older layout of the track I run at now, it is a lot smaller than your track, but it's decent.
https://www.youtube.com/watch?v=mrGdkuOx-zA

Here is the track I used to run at with the SCT 4300kv w/14t, it's a tiny track.
https://www.youtube.com/watch?v=-wirVKovm4w
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Old 08-30-2016, 05:14 PM   #2156
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What track is that?
Is it in SLO?
Unfortunately no... It's in SB. It's called Channel Island RC. They just finished a new layout last week.

http://www.channelislandsrc.com

Quote:
Originally Posted by deceit View Post
Thanks everyone for the recommendations about going up in pinion. Ill try my 17t this Sunday if this tropical storm coming somehow skips us.. I don't have a 18t yet, so i'll start with the 17t. So running 170* with the tekin setup is okay? I just built this buggy last week, so I don't want to trash the motor just yet.

Here is an older layout of the track I run at now, it is a lot smaller than your track, but it's decent.
https://www.youtube.com/watch?v=mrGdkuOx-zA

Here is the track I used to run at with the SCT 4300kv w/14t, it's a tiny track.
https://www.youtube.com/watch?v=-wirVKovm4w
I totally understand you being a little nervous since it's pretty new because I was the same way. But ehh... I got over it after I tomahawked it a handful of times hahaha. I got the feeling that the harder you drive it the easier it is
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Old 08-30-2016, 10:21 PM   #2157
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Hey guys I need a setup for a large 1/8 outdoor low bite and lose n loamy/ dusty track
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Old 08-31-2016, 07:37 AM   #2158
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Originally Posted by Matthew_Armeni View Post
That is an unusual number of shock shafts to bend, with or without the delrin guides. I suggest taking part in our 50% warranty http://www.teknorc.com/warranty-repair/ if you still have all the shafts. It's best to send all the parts at once to save on shipping.
As for the actual bending problem, I would go over your car completely and check for anything binding/bent/broken. If the suspension locks up the shock can no longer absorb the landings and bumps correctly causing something else to bend or break.

As for the boots, one boot tearing after 45 minutes of runtime isn't bad at all. But to increase the life of your boots I suggest running our new, taller spring perches. The extra height helps keep the boot centered around the shaft and not get pinched by the springs, which can often cause tearing. We've noticed an increase in boot life since switching to these.
Thanks for the info! I just ordered the taller perches.
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Old 08-31-2016, 08:29 AM   #2159
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Quote:
Originally Posted by ninefifteen View Post
Thanks for the info! I just ordered the taller perches.
I need to try this as well! Was bummed when mine got holes on my first day out running a new kit.
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Old 09-01-2016, 08:42 AM   #2160
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Quote:
Originally Posted by deceit View Post

Here is an older layout of the track I run at now, it is a lot smaller than your track, but it's decent.
https://www.youtube.com/watch?v=mrGdkuOx-zA
You run at deans. Go find Lawrence Williams-Mayes when your at the track, good guy, and he'll be more than willing to help you out. Grab an 18t from the shop. Promise, it'll be the cure for what ail's ya.

I'll be coming down for Christmas, Hope to check that place out.
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The oval 3some -> Tekno SCT410.3 - Tekno SCT210.3 - Blitz

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