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Old 01-20-2014 | 10:30 PM
  #11026  
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Originally Posted by shaggy2112
As you can see the plastic is just not wide enough to support the stress the bolts that hold the housing together endure. I measure about 2mm or so at the outside edges of the bolts. The top however I was unable to get an accurate reading due to the thinness of the plastic....Im guessing .1-.2 mm of plastic above where the screw that holds the diff case together. It is .1-.2 mm of plastic! This is a design flaw without a doubt. Tekno needs to add an additional 2 mm of plastic on top of the screw that holds the diff cases together. If your diff has not broke yet.... I can guarantee that it will if yours is like this.
Is it thinner at that spot than the .1 version? If not, then it is an injection issue, or material QC issue as Tekno stated.
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Old 01-20-2014 | 10:42 PM
  #11027  
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I could not find a viable comparison in my short search of the topic. Material qc issue has nothing to do with it. It is simply a design flaw from what im seeing.
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Old 01-20-2014 | 10:56 PM
  #11028  
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you can see here where the bolt would bottom out is entirely too thin of material to support any kind of force. Tekno could add material to either the top of the shock tower mount or the rear half of the diff to prevent this...which I will let them decide. Because this will not be an easy task due to how everything bolts together. But the fact remains this is absolutely a design flaw.
Attached Thumbnails Tekno RC EB48 Thread-0121140046.jpg  
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Old 01-20-2014 | 11:14 PM
  #11029  
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Allow me to reiterate...this is a company that is what....6 guys building a quality, nay superior rig that is able to compete with the best of the best. Tekno and the guys involved with the development and build of what is one of the best rc products offered has done an exemplary job at producing one of the finest products ever offered to the rc community, and it is the reason I have gone with them exclusively. The fact that this one issue was inadvertently overlooked does not dissuade my view of the brand in any way as I am sure they will make right what is wrong with the product they are offering unlike some of the other brands we may see in the rc industry.
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Old 01-20-2014 | 11:35 PM
  #11030  
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Originally Posted by shaggy2112
Allow me to reiterate...this is a company that is what....6 guys building a quality, nay superior rig that is able to compete with the best of the best. Tekno and the guys involved with the development and build of what is one of the best rc products offered has done an exemplary job at producing one of the finest products ever offered to the rc community, and it is the reason I have gone with them exclusively. The fact that this one issue was inadvertently overlooked does not dissuade my view of the brand in any way as I am sure they will make right what is wrong with the product they are offering unlike some of the other brands we may see in the rc industry.
No need to justify your post Shaggy, it obviously is occurring to you and other people also. People get too red blooded when they hear something bad about a brand they have a lot of heart for. Trust me with Tekno's previous track record this will get fixed and addressed.

With that said thanks to you and others for posting the pictures. I had a hard time figuring out where the break was occurring before. I have both the regular(on the eb48) and the newly angled gearbox (on the sct410)and neither have cracked. I ordered the angled gearbox direct from Tekno during the August time frame.
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Old 01-21-2014 | 12:33 AM
  #11031  
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How would a design flaw or fault only start happening 18 month after they started?

please explain that.
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Old 01-21-2014 | 03:11 AM
  #11032  
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I have 6+ Teknos and drive them 2-3 times a week for the last year. I have had one gearbox do that and it was from a 35 foot jump I landed upside down. I don't think there is a issue there unless you put some force on that area.
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Old 01-21-2014 | 03:11 AM
  #11033  
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Hello tekno brothers!!! I think I put the bump steer washer in the wrong place can some point me in the right way??? ( caution I am a redneck so type slow).
My buggy might be fine but when I set it down I got 1°-2° toe out and then I put it on the car stand I t front wheels look like it has 4° of toe in or more. I never had a losi or a kyosho do this????
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Old 01-21-2014 | 03:26 AM
  #11034  
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Originally Posted by shaggy2112
As you can see the plastic is just not wide enough to support the stress the bolts that hold the housing together endure. I measure about 2mm or so at the outside edges of the bolts. The top however I was unable to get an accurate reading due to the thinness of the plastic....Im guessing .1-.2 mm of plastic above where the screw that holds the diff case together. It is .1-.2 mm of plastic! This is a design flaw without a doubt. Tekno needs to add an additional 2 mm of plastic on top of the screw that holds the diff cases together. If your diff has not broke yet.... I can guarantee that it will if yours is like this.
+1
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Old 01-21-2014 | 03:32 AM
  #11035  
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Originally Posted by Bernard_Jr
That track looks like a lot of fun. Try what T. suggested but I think the best way to get setup help is to drive the car, post the setup, and explain what you don't like (want more steering off power) or what you'd like it to do (back slides out coming out of turns, too twitchy, etc.)

Good luck!
That's part of my problem, I can't really say/explain things. I have no idea if I want more steering off power but I do think I've been trying to follow set ups that have it driving on rails for an advanced driver to gain a second or half second when that's not me yet.

I will try that kind of setup when I order a few things. I will also get the 15° Spindle Carrier Set maybe? Do you use them at both ends, front and rear, or should the 15° ones only go on the front?

Thanks,

Vic
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Old 01-21-2014 | 04:42 AM
  #11036  
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Originally Posted by Genebaby
That's part of my problem, I can't really say/explain things. I have no idea if I want more steering off power but I do think I've been trying to follow set ups that have it driving on rails for an advanced driver to gain a second or half second when that's not me yet.

I will try that kind of setup when I order a few things. I will also get the 15° Spindle Carrier Set maybe? Do you use them at both ends, front and rear, or should the 15° ones only go on the front?

Thanks,

Vic
So do you want it to be easier to drive all around or in certain spots?
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Old 01-21-2014 | 04:48 AM
  #11037  
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Originally Posted by Genebaby
That's part of my problem, I can't really say/explain things. I have no idea if I want more steering off power but I do think I've been trying to follow set ups that have it driving on rails for an advanced driver to gain a second or half second when that's not me yet.

I will try that kind of setup when I order a few things. I will also get the 15° Spindle Carrier Set maybe? Do you use them at both ends, front and rear, or should the 15° ones only go on the front?

Thanks,

Vic
I haven't tried the 15° carrier (front only) yet on my EB. I would think they'd help in more rough conditions and your track didn't look too bad. You can always have someone film a lap or two and post it. Or ask someone with experience at your track to watch you drive it. Might be helpful to get a another perspective. While you're still getting a feel for it, I would suggest only making one change at a time and trying it if you have the time.

Anytime someone has asked how to go faster I usually tell them they need to learn how to slow down. I'm not going for the fastest lap, I want the fastest average.
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Old 01-21-2014 | 06:04 AM
  #11038  
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Originally Posted by shaggy2112
yes true..but with all the claims of a broken diff housing lately it is obviously a design flaw. I agree Tekno will surely have a fix as they upgrade their kits with what works automatically which is why I went full Tekno. I just hope they admit the flaw is theirs and take care of this recent rash of diff failures.
True. If you've seen my post history you know how brand loyal i can be, yet i still believe this is an issue. I've had the stock .1 gearbox and the .2 gearbox on my .1 with no breakage, but with this many people i think it is a problem. I think just more material around that area would solve this problem. If i know tekno, they WILL have this fixed.
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Old 01-21-2014 | 06:39 AM
  #11039  
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Originally Posted by shaggy2112
you can see here where the bolt would bottom out is entirely too thin of material to support any kind of force. Tekno could add material to either the top of the shock tower mount or the rear half of the diff to prevent this...which I will let them decide. Because this will not be an easy task due to how everything bolts together. But the fact remains this is absolutely a design flaw.
Originally Posted by shaggy2112
Allow me to reiterate...this is a company that is what....6 guys building a quality, nay superior rig that is able to compete with the best of the best. Tekno and the guys involved with the development and build of what is one of the best rc products offered has done an exemplary job at producing one of the finest products ever offered to the rc community, and it is the reason I have gone with them exclusively. The fact that this one issue was inadvertently overlooked does not dissuade my view of the brand in any way as I am sure they will make right what is wrong with the product they are offering unlike some of the other brands we may see in the rc industry.
Well spoken and nice pics this will help the team out west, I'm sure they've seen it. Mind you, they haven't really said much about this which means they are too busy figuring out a solution. Honestly I've seen other issues from other mfgs where representatives and product engineers blatantly told drivers on forums they don't know how to drive or build shocks.

I get getting fired up when it seems like things are being ignored. Its what were conditioned to do by other manufacturers. Try to remember, this isn't another manufacturer. Tekno hasn't done much else like the rest so please allow the guys some time before flying off the handle. We should all know by now we won't hear much of anything until they are positive they've got a solution.

Originally Posted by S.TRIPP77
Hello tekno brothers!!! I think I put the bump steer washer in the wrong place can some point me in the right way??? ( caution I am a redneck so type slow).
My buggy might be fine but when I set it down I got 1°-2° toe out and then I put it on the car stand I t front wheels look like it has 4° of toe in or more. I never had a losi or a kyosho do this????
Double check and make sure you have the spindle carriers and spindles on the right sides. It sounds like its more than just a shim issue. All else fails post a picture of the tie rod with the wheel off and we can see whats up.
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Old 01-21-2014 | 06:48 AM
  #11040  
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Originally Posted by S.TRIPP77
Hello tekno brothers!!! I think I put the bump steer washer in the wrong place can some point me in the right way??? ( caution I am a redneck so type slow).
My buggy might be fine but when I set it down I got 1°-2° toe out and then I put it on the car stand I t front wheels look like it has 4° of toe in or more. I never had a losi or a kyosho do this????
S.Tripp77 - On the Ackerman side I mount the ball stud so that the long side of the ball stud mounts to the ackerman plate and the washers are on the small side. On the steering knuckle side I fun the ball stud on the short side and run the washers on top.

Mark
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