mrNice Posted October 28, 2014 Share Posted October 28, 2014 why are the wheels moving so fast if the brakes are not on. its like throttle is fully engaged. i just want to break in the engine. Quote Link to comment Share on other sites More sharing options...
Wraithstorm67 Posted October 28, 2014 Share Posted October 28, 2014 Idle gap open too much needs turning anti-clockwise take off air filter and check gap is around 1mm Quote Link to comment Share on other sites More sharing options...
mrNice Posted October 28, 2014 Author Share Posted October 28, 2014 what gap? sorry complete noob Quote Link to comment Share on other sites More sharing options...
rudeboy Posted October 28, 2014 Share Posted October 28, 2014 take off the air filter and look down inside the carb, when opening and closing throttle you will see the slider moving, when at idle throttle there should only be around 1mm gap showing, if more than this then there is a small screw that needs adjusting to allow the slider to close more. Quote Link to comment Share on other sites More sharing options...
rudeboy Posted October 28, 2014 Share Posted October 28, 2014 (edited) Also it could be that when at idle settings on your transmitter the actual carb is not at idle i.e your not touching the throtlle but carb is still sitting half open, so you may need to adjust your servo/throttle linkage, if its just needing a small adjustment you can use the trims on your transmitter to do this (2 small switches that will move the servo by small amounts) if its needing a lot of adjustment then you may need to remove and re-centre the servo horn (plastic arm on servo that connects to carb via throttle linkage). Edited October 28, 2014 by rudeboy Quote Link to comment Share on other sites More sharing options...
rudeboy Posted October 28, 2014 Share Posted October 28, 2014 (edited) youtube is your friend, lots of nitro engine tuning video's. Edited October 28, 2014 by rudeboy Quote Link to comment Share on other sites More sharing options...
Anthoop Posted October 29, 2014 Share Posted October 29, 2014 (edited) why are the wheels moving so fast if the brakes are not on. its like throttle is fully engaged. i just want to break in the engine. I know that more than a few times now, new people have had similar problems with the Hyper .21 (and MacStar.28) engines.....I can only presume you are having a problem due to the same thing. "The LSN is too lean. The LSN is black screw on the end of the carb. where the throttle servo rod connects. I have ran many of these engines and have found that setting the LSN so that the head of the screw is around 0.5 mm proud is a good starting point for a new engine...." The basic things to note are... If the wheels are free to turn then they probably will.. If the revs are high then the clutch will engage and drive the wheels.. The idle speed can be reduced by closing the throttle gap or richening the LSN... New engines are best ran rich as this will provide more oil...but it will always make it run poorly.. Edited October 29, 2014 by Anthoop Quote Link to comment Share on other sites More sharing options...
mrNice Posted October 31, 2014 Author Share Posted October 31, 2014 Thanks for your help guys. Really have helped with my understanding of this little beast. i just needed to make some adjustments on my transmitter. Quote Link to comment Share on other sites More sharing options...
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