Llukeyboy Posted June 13, 2015 Share Posted June 13, 2015 Hi guys I've owned my hyper 7 for well over a year and only had to replace the steering servo once (pretty cheap but has been reliable up until now). Yesterday when driving I opened up the throttle and the car dug in and cartwheeld a few times. As I was driving it back I noticed that when I go above 1/4 to 1/3 throttle the car steers left (proportional to how much I exceed 1/4 to 1/3 throttle). Now when I was troubleshooting I noticed that this didn't occur when engine wasn't running, but it also didn't occur when the engine was running but the electronics were off. So it's not a purely electrical fault and not a purely mechanical fault either. It's so weird. Any help would be greatly appreciated... Quote Link to comment Share on other sites More sharing options...
evssv Posted June 13, 2015 Share Posted June 13, 2015 (edited) so is it steering or pulling to the left under acceleration? ??do the servo work as it should with engine off?? Edited June 13, 2015 by evssv Quote Link to comment Share on other sites More sharing options...
Llukeyboy Posted June 13, 2015 Author Share Posted June 13, 2015 With engine off servos work perfectly but with engine on it pulls left above 1/4 to 1/3 throttle. Can force it to turn right but it snaps left as soon as I let go of steering wheel... Quote Link to comment Share on other sites More sharing options...
evssv Posted June 13, 2015 Share Posted June 13, 2015 With engine off servos work perfectly but with engine on it pulls left above 1/4 to 1/3 throttle. Can force it to turn right but it snaps left as soon as I let go of steering wheel...hhmm....u got a spare servo to try??? Quote Link to comment Share on other sites More sharing options...
eatthis Posted June 14, 2015 Share Posted June 14, 2015 check both front wheels spin freely, if the front left wheel is stiff then the diff will send alot of power to the right front which will cause the car to turn left with power on. have you serviced the diffs yet? 1 Quote Link to comment Share on other sites More sharing options...
gofast3r19 Posted June 14, 2015 Share Posted June 14, 2015 Could be stripped teeth on servo horn Quote Link to comment Share on other sites More sharing options...
Llukeyboy Posted June 14, 2015 Author Share Posted June 14, 2015 check both front wheels spin freely, if the front left wheel is stiff then the diff will send alot of power to the right front which will cause the car to turn left with power on. have you serviced the diffs yet? Quote Link to comment Share on other sites More sharing options...
Llukeyboy Posted June 14, 2015 Author Share Posted June 14, 2015 I haven't serviced them no and both front wheels spin with an equal amount of resistance. Quote Link to comment Share on other sites More sharing options...
Llukeyboy Posted June 14, 2015 Author Share Posted June 14, 2015 I might try the crappy stock servo that's in my redcat on the hyper 7 to see if it's the servo that is the problem. I needed to upgrade the one in my hyper 7 anyway it's too slow... Quote Link to comment Share on other sites More sharing options...
Tamiyacowboy Posted June 14, 2015 Share Posted June 14, 2015 Cartwheels = wheel rim hits = stress through the steering into the servo horn output shaft on servo = torn out teeth. your problem is with the servo, the little lug out the top with all those little teeth on. have a check and you will no doubt find the teeth are missing an a certain area and is why your getting that not centering Quote Link to comment Share on other sites More sharing options...
Llukeyboy Posted June 14, 2015 Author Share Posted June 14, 2015 It's not that because the wheels only turn left and the screw that holds the horn on is moving as well so that means the motor in the servo must be moving as well Quote Link to comment Share on other sites More sharing options...
evssv Posted June 14, 2015 Share Posted June 14, 2015 It's not that because the wheels only turn left and the screw that holds the horn on is moving as well so that means the motor in the servo must be moving as welltry another servo imo. ... Quote Link to comment Share on other sites More sharing options...
Llukeyboy Posted June 14, 2015 Author Share Posted June 14, 2015 Hi guys, it was the servo but not in the way that you would think. The plastic that the servo was made of was extremely brittle and the casing has broken apart at several points including where the wires enter. This has caused one of the wires to come off of the connection on the circuit board. It must have happened over time through many impacts. The funny thing is the stock throttle servo hasn't been changed and it's still top notch. Have any of you heard of this happening before and whats a recommended servo in the 30-40 quid range. Thanks! Quote Link to comment Share on other sites More sharing options...
evssv Posted June 14, 2015 Share Posted June 14, 2015 Hi guys, it was the servo but not in the way that you would think. The plastic that the servo was made of was extremely brittle and the casing has broken apart at several points including where the wires enter. This has caused one of the wires to come off of the connection on the circuit board. It must have happened over time through many impacts. The funny thing is the stock throttle servo hasn't been changed and it's still top notch. Have any of you heard of this happening before and whats a recommended servo in the 30-40 quid range. Thanks!u can go savox for 40 quid. ..1256tg....or one of these http://pages.ebay.com/link/?nav=item.view&id=321767756637&alt=web there good fur the money so I read in here Quote Link to comment Share on other sites More sharing options...
Llukeyboy Posted June 14, 2015 Author Share Posted June 14, 2015 Yeah I'll do that then. That'll be this cars 3rd steering servo in just over a year! These things really need to last longer... Quote Link to comment Share on other sites More sharing options...
evssv Posted June 14, 2015 Share Posted June 14, 2015 (edited) Yeah I'll do that then. That'll be this cars 3rd steering servo in just over a year! These things really need to last longer...yeah servo r hit n miss...they vary from 2 quid to way over 100 so there's so many to choose from...servos r like motor bike tyres ...everyone has there favourites for what ever reason . ...Each to there own ect. ... Edited June 14, 2015 by evssv Quote Link to comment Share on other sites More sharing options...
legoluke.11 Posted June 14, 2015 Share Posted June 14, 2015 It's me Llukeyboy but had to sign under different name because I'm posting via an app. Admittedly that servo was quite cheap, do savox come with a warranty? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
evssv Posted June 14, 2015 Share Posted June 14, 2015 (edited) It's me Llukeyboy but had to sign under different name because I'm posting via an app. Admittedly that servo was quite cheap, do savox come with a warranty? Sent from my iPhone using Tapatalkyep..jus buy from a repiutable dealer...a uk one Edited June 14, 2015 by evssv Quote Link to comment Share on other sites More sharing options...
eatthis Posted June 14, 2015 Share Posted June 14, 2015 glad you got to the bottom of it Quote Link to comment Share on other sites More sharing options...
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