410.3 Pauly's Tekno SCT410.3

No local tracks near me. The few that are about 30min away don’t really race 4wd. I called them to see what was working at their track and they flat out told me “don’t buy a 4wd”. Lol. I really want a tekno sct to race.

That new paint looks incredible!

How are you liking the Hobbywing ESC/Motor? I'm on Tekin but the price point on the HW is nice for a future build.. I have heard is delivery is smooth..

Great job man. I might make a recommendation for a good setup. Try out Bornhorsts Motorama setup. I ran this all last outdoor season with great success. The only things I changed are rear toe increased to single dot in outer upper corners, and ride height 21-20 or 22-21. This setup is dialed.

Talon4U2NV said:

How are you liking the Hobbywing ESC/Motor? I'm on Tekin but the price point on the HW is nice for a future build.. I have heard is delivery is smooth..

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Never tried the Tekin so I can't compare the 2 personally, but I'm happy with the HW. Been running them for years in my bashers and have yet to have one fail on me.

bigdaddy7483 said:

Great job man. I might make a recommendation for a good setup. Try out Bornhorsts Motorama setup. I ran this all last outdoor season with great success. The only things I changed are rear toe increased to single dot in outer upper corners, and ride height 21-20 or 22-21. This setup is dialed.

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I appreciate the heads up on that man. I'll take a look for sure. I'm pretty sold on my current setup at the moment but it never hurts to try something new. The local track is small, loose, technical, and gets rutted out quite quick. It can be a handful with any setup from race to race. There's definitely no predictable conditions.

Been contemplating this for a bit so I'm just gonna go for it and see what happens. Just ordered an EB48.4 front diff with pinion gear to "over drive" the front diff like in the crawlers. Will give me 2 teeth taller on the pinion gear in the front. 12T over 10T. Hoping this thing will pull like a mule thru the corners on our loose technical track after the install.

I've also switched tires again to AKA Enduros in super soft compound. Knocked another half a second off my lap times since the change if I can stay away from the lapped traffic and run clean laps. Best tires for a loose track so far out of everything I've tried out.

I run the NB48.4 (39/12) ring/pinion in front and the EB48.4 (40/12) ring/pinion in the rear in my EB48.3. That combo has a little closer ratio to each other than what you are talking about and is what tekno recommends for overdrive. I love the way it pulls through corners. Changing the pinion that many teeth is quite a bit of a difference the fronts wheels will spin dramatically faster than the rears.
Gearing ratios for comparisons;
40/10=4
40/12=3.333

39/12=3.25
40/12=3.333

I am definitely interested in what you think after trying it out in your rig!

TBuggy said:

I run the NB48.4 (39/12) ring/pinion in front and the EB48.4 (40/12) ring/pinion in the rear in my EB48.3. That combo has a little closer ratio to each other than what you are talking about and is what tekno recommends for overdrive. I love the way it pulls through corners. Changing the pinion that many teeth is quite a bit of a difference the fronts wheels will spin dramatically faster than the rears.
Gearing ratios for comparisons;
40/10=4
40/12=3.333

39/12=3.25
40/12=3.333

I am definitely interested in what you think after trying it out in your rig!

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You are correct as I posted in the Tekno owners group also and David Hemenway told me the 2 tooth jump in pinion size is gonna seriously tax the center diff as well as handle poorly. Added the NB.4 parts as well.

I'm assuming a couple tooth drop in motor pinion will be needed to compensate for the jump up in diff pinion. Don't really need any more top speed that's for sure

Diffs are built for over drive. I bought the diffs from a chop shop so I got internals and all for just about the same cost as buying just the ring gears and pinions. The NB48.4 diff set didn't include the pinion so I had to order that separate.
Stuck with 15K for the front diff and 10K for the rear.



Parts needed to just do the over drive conversion:
Front Diff: TKR8152B and TKR8151B Ratio: 39/12
Rear Diff: TKR8152 and TKR8151 Ratio: 40/12

Going to a 13T pinion on the motor would give the same FDR as running a 16T pinion with stock diffs. Being as a 14T is the smallest that meshes in the SCT I'll be gearing down to a 14T to get it close.

That should be really interesting to see how the front overdrive affects the handling, I'd guess it's gonna be wonky and throw the handling off big time, possibly making the rear end drag along and spin out, but hopefully I'm wrong and you'll have discovered a secret weapon and will DOMINATE at the track. Ha ha! That would be really cool.

RC_User said:

That should be really interesting to see how the front overdrive affects the handling, I'd guess it's gonna be wonky and throw the handling off big time, possibly making the rear end drag along and spin out, but hopefully I'm wrong and you'll have discovered a secret weapon and will DOMINATE at the track. Ha ha! That would be really cool.

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This setup is supposed to work well in loose bumpy tracks, which is what we have locally. I received some pretty positive feedback from some of the guys who run this setup in buggies as well as a few who run it in their SCT's. Hoping it gives me some edge over the standard diff setup, but if it doesn't I left the stock diffs intact so a switch back would be pretty quick and straight forward. Hopefully this dreary weather breaks so I can give it a rip in the yard and take some temps and make sure nothing is crazy out of whack.

This guy killed another one for me. Thanks Oscar @Rcwerkz

Whole new rig with the over drive, but man it rips. Just gotta dial my driving in with the new setup.

The 17mm hubs are great. I like them on my truck. You probably already know, but DE makes SCT wheels with 17mm hex. Use those for a SCT look

mikl said:

The 17mm hubs are great. I like them on my truck. You probably already know, but DE makes SCT wheels with 17mm hex. Use those for a SCT look

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I tried the 17mm hex just to utilize some of the buggy wheels/tires I have. Definitely didn't perform like the sct tires so I went back. Not running high voltage or anything that really justifies changing over from 12mm.

I only run 2s so no high power for me either. I just like the extra security of the 17mm. Plus, the 17mm hex adapters use the EB48SL axles so no worries on breaking them. My SCT is the OG 410 so the axles were prone to breaking.

mikl said:

I only run 2s so no high power for me either. I just like the extra security of the 17mm. Plus, the 17mm hex adapters use the EB48SL axles so no worries on breaking them. My SCT is the OG 410 so the axles were prone to breaking.

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Gotcha. Didn't know they ran different axles on the original SCT.

Anyone who runs a Tekno SCT on loose tracks knows how bad they collect dirt inside. I took the J.Concepts overtray for the MT410 and did a little bit of trimming. I opened up the vent cut outs to let as much air flow as possible. Figured I'd try something else than the EB48 body or Dusty shroud. Find out how well it works this weekend.

That looks like it would work just fine. Definitely more roomy inside than the buggy body.

TBuggy said:

That looks like it would work just fine. Definitely more roomy inside than the buggy body.

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Worked out great! Not really any dirt inside the chassis whatsoever. Heat was also a non issue. Motor was 130F