Lucas2504 Posted December 27, 2015 Share Posted December 27, 2015 I recently started up my Hyper .21 that hasn't been run in a few months. I have managed to get the engine idling steadily without the wheels turning by sheer luck of turning the idler needle by a random anticlockwise amount however I believe that is is still incorrect in some way as whenever I pull the trigger, nothing happens. The carb is however opening to let more air in as I stared down the carb and can see it opening so i'm not sure why the engines revs don't increase. Additionally when I turn on the car the servo's default position is to totally close the carb. I'm averagely new to nitro so this confuses me as to why the engine can idle when the carb is totally shut, is there always a slight gap that allows air through? how does the needle affect this and are there any other needles that I need to adjust. I have searched for threads similar to this but couldn't find anything where pulling the trigger did nothing. Quote Link to comment Share on other sites More sharing options...
Burridge Posted December 27, 2015 Share Posted December 27, 2015 So the slide is opening when you pull the trigger but it still just idles? my first thoughts are that it's a fuel supply problem, but surely if that were the case it would die instantly when opening the throttle; giving it a ton of air? Quote Link to comment Share on other sites More sharing options...
Lucas2504 Posted December 28, 2015 Author Share Posted December 28, 2015 Yes the slide opens. But oddly no when I hold the trigger the engine continues to idle even if I hold it down. Quote Link to comment Share on other sites More sharing options...
Sayce97 Posted December 28, 2015 Share Posted December 28, 2015 Could there be interference when the engine is running causing the throttle servo to stop? I cant think of anything else Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
chrisjw Posted December 28, 2015 Share Posted December 28, 2015 Have you checked that all of your batteries are fully charged for the receiver & controller? Quote Link to comment Share on other sites More sharing options...
Lucas2504 Posted December 28, 2015 Author Share Posted December 28, 2015 I swapped batteries for another hump pack that is definitely full and the servo moved more, I correct some of the needle positions to the 'standard' rich settings. However I believe that there may be a stripped gear in the servo as it will only move one direction when I pull the trigger, it does not move when I brake. I might put a savox in there to see if that helps. Quote Link to comment Share on other sites More sharing options...
Anthoop Posted December 29, 2015 Share Posted December 29, 2015 If you disconnect the servo...set the carb....it should start and you can operate the throttle manually....of course have the vehicle on a block so wheels are free to turn. The idle screw on the carb should always dictate the minimum gap. Quote Link to comment Share on other sites More sharing options...
Ian w Posted December 29, 2015 Share Posted December 29, 2015 Are you sure the setting on the transmitter is not set to reverse it may be worthwhile to check this. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.