Hi guys I have recently purchased an NT48 and I love this truck. But my first run I had a clutch bell bearing collapse and it stripped my spur gear and broke 2 teeth. I had no spare and I'm the only Tekno driver at my club so my day was done.:cry:
As I came from Serpent I had a spare diff. So I decided to try a complete serpent centre diff with a 48t serpent spur gear. I used the Tekno outdrives and I just had to put some shims behind the bearings. It all fitted in nicely. I got to run it on the weekend and I had no problems at all. We raced 3, 7 min heats and a 30 min A main where I came second.:D Now I feel confident with the NT48 using the serpent centre spur gear.

Thanks for info.I plan on talking with Tekno tomorrow about my problems.Keep watch in for sale tread as this truggy my be for sale soon.

I have over 100 minutes of mains, over 30 minutes of qualifiers and plenty of practice time on my NT48. I've had no trouble with the spur gear at all. It's always a good idea to change clutch bearings regularly and set your gear mesh properly. Also be sure to shim your clutch bearings so there's a tiny bit of play in the bell when you wiggle it back and forth. I like 1mm of play.

I agree with you on shimming and gear mesh,I do it before every practice or race day,I also change clutch bell bearing before racing or practice.I just can't see that they put in the effort to build a good truck and miss on this and tank.Just saying my past mugens never gave problems in these areas.Full year of racing ten plus gallons of fuel and no spur problems.

My clutch bearings were brand new they were the kit bearings. I always shim my clutch bell with a nice amount of play. I did read here to run the mesh a little closer and I think with chassis flex it collapsed my my front clutch bell bearing. With the serpent centre diff I set my mesh where I normally do and had no issues. I will give the Tekno centre diff another go and keep the serpent centre diff as back up.

I'll have you set my mesh when we meet at the dome. Tony and I have tried all different mesh settings and I have managed to break them all. I don't think it is as much a mesh problem as it is a driving style problem. I am getting on throttle to hard at the wrong times when the chassis is at its greatest flex and I don't believe the spur is strong enough to take the abuse. I wish Tekno would just make a non-lightened spur and I think that may solve the problem for me.

My case is prolly not a flex problem.Im using both rear braces.When i set gear mesh I use a piece on paper witch is approximately .003 think.Mesh comes out very nice on new bell and spur.

There is still a lot of chassis flex even with both rear braces. I run both rear braces. I think the large hole for the flywheel doesn't help either. I understand the purpose of it but with the narrow chassis it creates a lot of flex in the middle.

exactly. if you put the center of your truck on a board and push down on the front and rear, you can see the movement between the spur and clutchbell. I am also running both rear braces. with every other truck I have run, if the mesh isn't right, it has torn up the bell but the spur was still usable. I tried to figure out an extended motor mount, but with the cover plate in the middle and the narrow chassis I don't know how it can be done.

i haven't thought much about it but the hole for flywheel could use a stiffener plate instead of plastic.Maybe I'll look into making something if I keep it.Thanks for idea.

I think an extended engine mount that covers half the flywheel gap would be the ticket.;)

you would need 2 different ones. 1 for forward mount and 1 for rear. or maybe even have metal inserts that are stiffer than the plastic ones would work.

That is true it's not an easy fix. But if my serpent spur gear holds up over time, then it might just be a matter of beefing up the Tekno spur gear. But a metal insert instead of plastic would also be a good option.

I ran the truck yesterday with no setup at all in it. I didn't have time to check the camber, toe, ext. I had a brand new engine in and was still breaking it in during the racing and it was amazing compared to my RC8T. I was faster threw the corners than the other guys and I ended up 3rd and wasn't more than half throttle the whole race and we have a two looooong straights. This thing turns amazing! I did have a problem in the main, that I thought was just an engine breaking in problem, but I found the fuel line in the tank came off the pickup. I bought the kit from A Main and it wasn't updated yet.

I can't wait until the engine is broke-in and the truggy is setup!

Hey guys, rest assured Tekno is working on the spur gear issue. That said, most companies would wait for a NT48.2 to fix any issue but Tekno has time and time again shown their support for the racers and often times replaced issues at no cost to the drivers which for me is enough to stay with a brand but then you add the incredible speed, turning and over all durability of the kits at you have an A+ product. I havent experienced the spur gear issue yet but I am not as hard on the throttle as some guys who i see full throttle 100% of the time and I also think it may be partly a flex issue but also I see a lot of guys landing jumps on power and thats just bad for the entire drive train but imagine a sudden 30k RPMs metal on metal. Anyway, the spur gear issue will be fixed although I worry its a slippery slope for Tekno because it has become expected that any little issue will be resolved at no charge, I think big things like the spur or gas tank make sense for them to fix but I've noticed other people mentioned design flaws in other Tekno threads that really could be attributed to a million things so i just hope Tekno doesn't get taken advantage of for their incredible support.

As for the leaking gas tanks around the lid, did you do a pressure test and know for sure its a leak not something else, I have no idea your experience level so don't want to make assumptions, but could it be someone spilled and it looked like a leak? I suggest doing a pressure test and if you find there is an issue, just email Tekno and they will help you through it. Please do this before deciding to sell the truck because at the end of the day, nitro kits have wear no matter what brand and if I am faster with the tekno but need to replace a gear once in a while then hey Ill stick with being faster!

If you need help contacting Tekno, please PM me and we can get you set up or if you have any questions in general I am happy to help.

Well Graham when you see fuel streaming from the cracks in the tank I would call that a leak!As for my experience I am a mechanic by trade and have been for 30+years,I have been racing rc for about 6 years so wrenching on these things is a cake walk.Safe to say I'm not a noob.lol.The Truggy is great but I have yet to finish a main with this thing so you can see my frustration with it.Now my old Mugen mbx6tr was awesome and reliable,I'm thinking of going to the mbx7t.Have to wait and see what tekno does about parts.

I am not looking for Tekno to send me a free spur, I just want a way to fix it so that I can make it more than 1 race weekend on it. I love my truggy and will figure out a good fix for it if need be because it is the best thing I have driven yet!! I have faith that the issue will be solved eventually and know that it may not be an easy fix to keep the handling the same.

Hi mate , your best advice is contact the guys at Tenno and talk to them as you must have a bad kit with these problems.

I have personally run heaps of races including a 1 hour long final for the Australian title with no issues at all

I have replaced 1 x spur and 1 x clutch bell to match new spur but apart from that every thing else is box stock as it was built over 6 months ago.

Talk to Danny and team to get your self sorted. There customer service is 2nd to no one.

I hope they can work out and help you out as this is a great truggy

That was my point, didn't want to make any assumptions about your experience level because I don't know you, just offering up ideas and you said leaks but didn't mention fuel "streaming from cracks" so didn't know the severity just trying to help ya out and get you finishing races! Honestly it's the first I've heard of the new tanks having an issue, can you post a pic and maybe we can help you out. But definitely email Zac at Tekno too, he may know something I don't!

I understand, I don't think your looking for handouts, you just want to finish like anyone else. Glad you like the truck tho!

Tekno gave me 50% off new tank and spur.Hope that others don't have tank trouble.Hate knowing that I have to buy spur and bell every half gallon of fuel.Oh well could have been worse,they didn't have to give me that.Thanks Tekno.

Hey thats great to hear, I am glad you at least got some resolution for the time being and hopefully the spurs will be revised before you have to worry about it again, but wow your spurs are wearing out after only a half gallon? What did they say about your tank cracks?

Hi everyone,

We have new spur gears coming that wear 10x better than the current spur. We are trying to get them here ASAP. We'll keep you posted on that.

On the tanks leaking, this is due to the screws that secure the fuel line clips being too long (M3x8mm). Replace them with M3x6mm screws and everything should be fine.

Tested all weekend long (7-8 hours of actual run time) between 4 different truggies and not a single problem with either part.

Thats some great news!

Very nice.

My tank was not leaking at the splash guard screws.It was leaking were the lid mounts to tank,visible cracks.And no it wasn't hit or pulled to hard.i don't use a fuel gun so lid doesn't need to be pulled that far.

Prayers have been answered by Tekno once again!!! That is the second best thing about this truck. the first thing is driving it!!

I see. Haven't seen or heard about leaking in this area before. It could just be a bad tank. Has this happened to anyone else or on multiple tanks that you've had? I just want to get info and possibly rule out some things.

Wish the new one I have coming would be the update gear.

Now what company is going to set up and make a better body?

Always the best customer service :)

Hoping FTW jumps on this as well ;)

So we finally have had a miracle here and it has stopped raining long enough for me to get some quality track time with my new Tekno Truggy :nod:

First thing I have to say is what an awesome build, awesome instructions, and as easy and simple as can be ! Just an all around great kit that is a joy to put together..

My truggy is 100% box stock with no changes to the factory recommended setup in the instructions....So far the track performance has been awesome , seems well balanced and easy to drive . I would consider the setup to be neutral...

The stock clutch works very well.... However I found it took a fair bit of time to fully seat itself into the bell, initially I had a pile of slip.... I could see this being a issue if a person doesn't take the time to seat the clutch properly and tries to race it, they could burn out the clutch before they even get to see what it can really do....But all in all an excellent clutch, just give it a few tanks to breakin properly before you start race loading it, it will last much longer.....

So here is my first video of the Tekno..100% stock setup on the stock clutch.... Engine is a modified XZB Speed Based LRP on a OS 2060 tuned pipe......

+ YouTube Video

All in all I love this truggy and would like to thank Tekno for the opportunity to run their products !

Nick might dump his Losi's after driving a Tekno! ;) You should come down to the Dome in October Neal.

Definitely my next truggy...

Excellent choice! I love my Tekno truggys I have both nitro and electric and they are awesome.

Guys don't forget to remove the longer screws in the fuel tank shield. I cracked 2 tanks before the bulletin was released. Thanks for the great support Tekno. Thomas gave me 50% off towards the purchase of 2 new tanks. Heres the area where they crack.[IMG]http://i1212.photobucket.com/albums/...ps902e9a68.jpg[/IMG]

I too have a crack in the same location Jones and glad you got a fix. I have continued running mine without issue because if you get a flashlight or over a lamp and put it right by the crack, you can see how far the crack really extends, in my case the crack is only on the screw hole and doesnt extend down into the tank body, if that makes any sense? I double checked it by removing all the screws and doing a bubble test. Then i put in CA to fill the crack and in the screw hole and then screwed a shorter button head in and havent had an issue since. Obviously if you are really concerned then replace it but its not necessarily a career ending injury haha

I Am considering coming to the dome.... would be a blast for sure !

After reading this thread I'm blown away by how good this truck sounds so I just ordered one and can't wait to get it know what to do with my new MBX7T.
What diff oils have people found to be the best or is everyone running the box set up.