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-   -   Tekno NB48 (https://www.rctech.net/forum/nitro-off-road/718521-tekno-nb48.html)

ThreatRacing 10-08-2014 08:11 PM

Any of you guys run a kill switch? Mine came in real handy today. I never have servo problems, but tonight ended up being my lucky night lol! Pinned on the strait away, and the throttle servo failed causing it to seize in position. Turned off my remote of right away, and it killed the motor just like it is suppose too. It would have been one hell of a situation with out it lol!

evolution03 10-08-2014 08:44 PM


Originally Posted by ThreatRacing (Post 13583787)
Any of you guys run a kill switch? Mine came in real handy today. I never have servo problems, but tonight ended up being my lucky night lol! Pinned on the strait away, and the throttle servo failed causing it to seize in position. Turned off my remote of right away, and it killed the motor just like it is suppose too. It would have been one hell of a situation with out it lol!

i use a throttle return spring

madweazl 10-08-2014 08:45 PM

I've never had a runaway thankfully. I dont run return springs and never have, just always rely on being setup and luck I guess. What kill switch are you running?

Graham11 10-08-2014 08:50 PM


Originally Posted by madweazl (Post 13583853)
I've never had a runaway thankfully. I dont run return springs and never have, just always rely on being setup and luck I guess. What kill switch are you running?

He's referring to his transmitters setting I believe. Futaba is called fail safe, it's great, if the rx and tran ever lose connection or you have a runaway, just turn off your radio and servo goes to a pre determined position, I set mine to slightly engage the brakes. Great feature to use.

I don't trust throttle return springs or rubber bands w how strong servos are anymore.

madweazl 10-08-2014 09:00 PM

Hmm, I'd trust a spring over loss of battery power any day (not that I run one :lol: ). If it had some sort of capacitor to store enough energy to return to a preset point it may have some value.

ThreatRacing 10-08-2014 09:05 PM


Originally Posted by evolution03 (Post 13583851)
i use a throttle return spring

Glad I had the kill switch because that wouldn't have worked. The servo is seized..


Originally Posted by madweazl (Post 13583853)
I've never had a runaway thankfully. I dont run return springs and never have, just always rely on being setup and luck I guess. What kill switch are you running?

Killer RC BumbleBee.


Originally Posted by Graham11 (Post 13583862)
He's referring to his transmitters setting I believe. Futaba is called fail safe, it's great, if the rx and tran ever lose connection or you have a runaway, just turn off your radio and servo goes to a pre determined position, I set mine to slightly engage the brakes. Great feature to use.

I don't trust throttle return springs or rubber bands w how strong servos are anymore.

I do have that set, but it could not work do to the servo seizing. The kill switch is what saved the car thankfully.

Here is a pic of the switch mounted in my NB48

http://i162.photobucket.com/albums/t...psbc97207e.jpg

HomicidalBunny 10-08-2014 09:11 PM


Originally Posted by ThreatRacing (Post 13583880)
Killer RC SuperBee.

I think you mean BumbleBee, the SuperBee is for gas engines, and interrupts the ignition coil. The BumbleBee (for nitro cars) stops the fuel flow, since there is no ignition coil in nitro cars. :)

Graham11 10-08-2014 09:13 PM

I'll stick w my radio fail safe, it's cool but not worth $60 to me personally, plus just another thing that could fail. My savox servos seem to last great if maintained, outside of that, the futaba setting takes care of the rest.

HomicidalBunny 10-08-2014 09:31 PM


Originally Posted by Graham11 (Post 13583892)
I'll stick w my radio fail safe, it's cool but not worth $60 to me personally, plus just another thing that could fail. My savox servos seem to last great if maintained, outside of that, the futaba setting takes care of the rest.

I'm not saying you should get this super fandangle fancyness of a failsafe, but to me $60 for a failsafe to stop someone getting hurt or to stop you losing a $300-$400 engine is a fairly good price :lol:

madweazl 10-08-2014 09:38 PM

Hadnt seen that before, pretty cool really.

vandalzzz 10-08-2014 10:05 PM

Real RC Masta don't need a killaswitch, Real RC masta can drive to pitlanes WOT in a drifting manner making new lap record :lol::tire::lol:

HomicidalBunny 10-08-2014 10:27 PM


Originally Posted by vandalzzz (Post 13583945)
Real RC Masta don't need a killaswitch, Real RC masta can drive to pitlanes WOT in a drifting manner making new lap record :lol::tire::lol:

This is assuming your steering servo is still responding :lol:

Apco1 10-09-2014 06:18 AM

Started my NB48 build last night. This is my third Tekno kit and each time I become more impressed with Tekno. Outstanding parts quality, ease of build, fit and finish.

Mo Denton 10-09-2014 06:37 AM


Originally Posted by Apco1 (Post 13584372)
Started my NB48 build last night. This is my third Tekno kit and each time I become more impressed with Tekno. Outstanding parts quality, ease of build, fit and finish.

it is a fun car to build!!

Casketman 10-09-2014 06:57 AM

This car is tough. I ran it all summer and for the finals this past weekend,it got double teamed. Myself and a friend ran the car all day. I was in Intermediate and he ran Pro. 2 hours of practice,6 quals total and 2 mains totaling over 40 mins of run time. Finally brake fade and a flameout in the pit killed my A main where I was running in the top 3.

I can't say my future is in cement with Tekno because there is a huge pull for me to run Losi but I'm not sure if very man cars would of put up with the pounding this car got all year and still put up with double shifting in the main. I really do like this car!


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