hey guys,

i am completely new to driving nitro rcs, i just bought a hyper 7 tq sport RTR pack with a .21 engine in it, i dont have a clue how to tune the engine or anything could you please help? And is there anyway to stop the shocks from bottoming out and the chassis hitting the ground?

any help would be much appreciated

First you must break-in your engine. Take a look at that picture first:



You can see 3 needles as you can see at your engine too, right?

The old school method is the following:
With the needles at factory settings, you run your engine for 1 tank with the wheels off the ground at idle speed. The next 5 tanks you are doing them with the wheels on the ground but not overthrottle. Do some 8 figures or loops while at midspeed (half throttle). Then you start leaning (turning right the high speed needle (HSN)) your engine a 1/8 of a turn each time untill you reach the best top speed and best temp. You will see the engine start powering up. Get a temp gun yourself and see the temp each time. The temp MUSTN'T pass 135 deegrees celsious while running your engine.


Take a look at that series of break-in, it might help you: http://www.youtube.com/watch?v=pAggkhHqEkw

The method i gave it's a simple one. Other guys maybe doing something different, or running more tanks, i don't know. That works for me.

The chassis is hitting the ground. It's freakin normal for the buggies while landing from jumps

oh ok cool i did that but the car stalls or cuts out when i use the brakes how can i fix that and takes off when i start it is there anyway to fix that?

well, in the pic posted earlier, can you see the smallest screw called idle? you want to screw that in till there is a 1.5mm gap in the mouth of the carb while braking.

oh cool thanks for all your help i think ill get the hang of it soon

Don't screw the dle needle. Just put some throttle. You will unscrew the idle needle if you touch it.

the needle marked lsn on the diagram is infact the mid range needle LEAVE THAT ALONE, the low speed needle is on the other side of the carb in the middle of the slide that the servo pulls out when you accelerate.

Oh, good point dude. I should told that too I super rarely using that needle

thanks for that guys i have got the buggy working mad as now so to speak it absolutely flies

Great news, but keep the temps in the limits

Ok, I was just looking ove some of the info on this thread. I have a hyper 7, and it's my first slide carb. I did move the mid range needle thinking it was the lsn. Now that i know it isn't, and I'm not sure how many turns I turned it from where it was. I turned it to flush thinking it was the lsn and i thought I was setting back to factory settings. Is there anyone who can tell me where it needs to be put back to?

Nevermind, just spoke to ofna tech support, they say to get it as flush as possible, then it will be no more than a 1/4 in either direction to return to factory.