Help, Hyper 7 tuning issues

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mike630

RC Newbie
Messages
11
haven't played with rc's for a long time and not very knowledgeable of them at all yet

problems
-when I get it running it wants to walk away from me slightly but if I mess with idle in the slightest it will die
-turning radius is only a little more then half of what it was originally
-when I get it running I will lift it up give it throttle a couple time then out of no where it will go full throttle even when I am not touching the remote until I kill the motor
please help. I'm sure this for the most part is just a tuning issue but any ideas or suggestions are greatly appreciated
 

ninnon

Hardcore RCNT User
Messages
2,281
Location
England, UK
RC Driving Style
Bashing, Racing
haven't played with rc's for a long time and not very knowledgeable of them at all yet

problems
-when I get it running it wants to walk away from me slightly but if I mess with idle in the slightest it will die
-turning radius is only a little more then half of what it was originally
-when I get it running I will lift it up give it throttle a couple time then out of no where it will go full throttle even when I am not touching the remote until I kill the motor
please help. I'm sure this for the most part is just a tuning issue but any ideas or suggestions are greatly appreciated
1)Try adjusting the idle on the throttle body, or check that you clutch springs aren't gone
2) It sounds like your endpoints need adjusting, or the servo is on it's way out
3) Make sure that the servo is returning to normal, and is not disconnected.

To understand all the basic parts of a nitro rc, here's a great guide that tells you loads of information about how they work:
https://www.rcnitrotalk.com/forum/threads/nitro-rc-beginners-guide.68224/

The tags on this one were quite amusing :)

P.S Next time, post in the "Nitro RC Talk" section of the forum, as the hyper 7 isn't a truggy, it's a buggy :)
 

mike630

RC Newbie
Messages
11
thank you very much for the feedback and I will check the link you included.
I just find it strange that servos, endpoints etc. etc. could possibly be out of wack this early in the game. I mean its got a total of maybe 15 minutes of actually run time on it.
 

ninnon

Hardcore RCNT User
Messages
2,281
Location
England, UK
RC Driving Style
Bashing, Racing
thank you very much for the feedback and I will check the link you included.
I just find it strange that servos, endpoints etc. etc. could possibly be out of wack this early in the game. I mean its got a total of maybe 15 minutes of actually run time on it.
Did you break the engine in? Also, it may just be that you've accidentally changed the endpoints :)
 

mike630

RC Newbie
Messages
11
break in process was very smooth. how do I change endpoints? haven't really touched the remote at all
 

ninnon

Hardcore RCNT User
Messages
2,281
Location
England, UK
RC Driving Style
Bashing, Racing
break in process was very smooth. how do I change endpoints? haven't really touched the remote at all
Could we have a picture of the car with the body off?, sometimes it's something else :) But to change the endpoints, you alter the set screws on the remote, or buttons- it should say in the manual :)
 

ninnon

Hardcore RCNT User
Messages
2,281
Location
England, UK
RC Driving Style
Bashing, Racing
these are some pictures. the one with the wheels turned shows as far as they go now

here it is
Do you get any bubbles in the fuel line? Also, try this:
Go full throttle, does the carb slide go out of view?
When on idle, does the gap widen (Not when revving, obviously)?
When braking, does the slide move AT ALL?
 

Rolex

Hoof Hearted
Staff member
Supporter
Military Veteran
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You can't change endpoints unless you have a computer radio.
Other than that, and the FIRST thing you EVER do when you encounter issues like this is to put in brand new Alkaline batteries in both the radio and the car. Save the old ones in case the new ones don't solve the problem.
Once you've checked it out, let us know what happened.
 

ninnon

Hardcore RCNT User
Messages
2,281
Location
England, UK
RC Driving Style
Bashing, Racing
You can't change endpoints unless you have a computer radio.
Other than that, and the FIRST thing you EVER do when you encounter issues like this is to put in brand new Alkaline batteries in both the radio and the car. Save the old ones in case the new ones don't solve the problem.
Once you've checked it out, let us know what happened.
Forgot to mention that. Check that they haven't leaked too.
 

mike630

RC Newbie
Messages
11
will check all of this tonight around 10 and will let u know. went to try it last night but for got to charge my ignitor and don't have a back up
 

mike630

RC Newbie
Messages
11
there is a small amount of bubbles in my lines every once in a while
when I go full throttle the carb slide goes out of view
did not notice the gap change when at idle
put new batteries in the radio and I now my battery pack Is charged
 

ninnon

Hardcore RCNT User
Messages
2,281
Location
England, UK
RC Driving Style
Bashing, Racing
there is a small amount of bubbles in my lines every once in a while
when I go full throttle the carb slide goes out of view
did not notice the gap change when at idle
put new batteries in the radio and I now my battery pack Is charged
There shouldn't be any bubbles at all...
 

ninnon

Hardcore RCNT User
Messages
2,281
Location
England, UK
RC Driving Style
Bashing, Racing
what does that indicate?
That there is a leak somewhere- check fuel tank, fuel lines, connections and the tightness of fit onto the carb, exhaust and fuel tank nipples. See at what point they start to appear- or even better, try using different fuel lines. :)
 

mike630

RC Newbie
Messages
11
stock filters, didn't check the lip (as stupid as that sounds)

ill try running it again in a little bit
 

ninnon

Hardcore RCNT User
Messages
2,281
Location
England, UK
RC Driving Style
Bashing, Racing
Have you got any fuel filters installed, and are you pushing down on the lid, to make sure it's got a good seal?
When you see the bubbles, at what point in the line are you seeing them, before the filter?
 
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