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Model Forum / Radio Controlled / Land Models / June 2005HELP! problems with an LRP F1....
ok...i've got an LRP Digital Reverse Pro.... i just transfered some electronics from one chassis to another. nothing changed. same servo, same receiver, same transmitter with same settings, same ESC..... i'm looking at the motor leads right now. the red motor lead is hooked up to the yellow wire on the ESC. and the black motor lead is hooked up to the blue wire on the ESC. the servo is connected to channel 1 on the receiver. the ESC is connected to channel 2 on the receiver. these two are NOT plugged in upside down. there is a notch on each plug that prevents that from happening. my transmitter is set for Normal Steering/Normal Throttle. trims are all at zero. again, nothing changed. i followed the ESC instructions and set up the ESC with reverse function enabled. ......but when i pull for throttle...the car goes in reverse. i double checked to make sure that the forward only option was not enabled. it is not. anyone know what i might be doing wrong? > anyone know what i might be doing wrong? If there's a different motor, and that motor has adjustable timing the endbell may be installed backwards. Put the same motor from the other chassis in and try it. i just swapped the motor leads.....orange to black, and blue to red...and now it works fine. will there be a problem doing this? do some motors run in reverse? kenji....this motor has a sealed end bell. > i just swapped the motor leads.....orange to black, and blue to > red...and now it works fine. > > will there be a problem doing this? I'd take your radio transmitter and switch it there. > do some motors run in reverse? I'm not sure. But I think some 19T motors run the opposite way. Also, is it possible, that how the motor mounts to the vehicle is the opposite direction than the last vehicle? i tried switching it at the transmitter but then there's a 1 second delay before th throttle engages. just like it used to do when i wanter to reverse. the same motor moved form one chassis....to an identical chassis. no change in the way it mounts. > i tried switching it at the transmitter but then there's a 1 second > delay before th throttle engages. just like it used to do when i > wanter to reverse. > > the same motor moved form one chassis....to an identical chassis. no > change in the way it mounts. if you are saying everything is the same but the only thing that changed is a chassis, that would be impossible. Connect everything normally. Meaning the leads. Return your transmitter to the proper setting and reset the speed control. that's what really threw me for a loop. nothing changed. identical parts, identical chassis. i didn't even bother to mess with the transmitter or the ESC settings since nothing was being changed. and then....the car starts running in reverse. i returned everything to normal yesterday afternoon and reset the transmitter and esc. and it's still running in reverse. i took out the LRP F1 esc that was in there and put in a Futaba ESC that is in three other chassis i own and never gives me problems. and it still ran in reverse. how can simply moving compoenets form one chassis to another reverse the motor? > how can simply moving compoenets form one chassis to another reverse > the motor? is it possible you forgot that in the original chassis the motor was in was wired black to pos, and red to neg, not the correct way...and it's really the motor you are using? what kind of motor is it? not possible cause i've got pictures of both of the chassis and they clearly show the wires hooked up properly. the motors is Tamiya's Sport Tuned motor. but...even IF the this one particular motor turns the other way, if i flip the switch to reverse throttle on the transmitter....it still has that delay in throttle. What two chassis did you move components between? As Kenji says if all you did was swap parts over and they're connected the same way as before then either you accidentally flipped the servo reverse switch on the transmitter or the differences in the transmission (normally only possible with pan cars) causes the problem. The fact that when you want forwards you get a pause leads me to think you have the motor wires reversed as that pause only happens when the speedo is going into reverse, in forwards mode you get power instantly. I have seen speedos in the past that have lost their settings, I had a Novak that would do that from time to time. Just run through the speedo setup again and that should get everything working again. Chris the two chassis are identical....Tamiya TB01s. thing is...everything else works fine. no reverse on the servo and the ESC is working perfectly. the only way to correct the problem is the connect the wires in reverse. i did the set up for the ESC a few times today. total since friday is about 30 times this ESC has been set up. and it's the one touch. press once and the neutral is set, pull the trigger and press again the high is set, throw the trigger the other way and press once more and the reverse is set. then a two beep confirmation. and i get the two beeps. i wish i could say it was the motor but it ran fine in the other chassis. during the transfer of compoenents, nothing was disconnected, switched, reset, or changed in settings. and this is because, i figured, well, it's going into the exact same chassis, why bother messing with anything? is it possible.....just maybe...that the motor wires were soldered on to the motor backwards? so the red is where the black should be and the black is where the red should be? wait...never mind....becuase even IF that was the case....how come it ran proper when it was in the first chassis. i'm going to put everything back int he original chassis and see what happens. >i'm going to put everything back int he original chassis and see what >happens. I'm not familiar with the chassis, so this might completely useless, but... If the car uses gear diffs, it's easy to install them incorrectly which would cause the car to run backwards. Scott yeah....found out yesterday......the whole gear case was put in backwards during a cleaning. it uses a beveled pinion to turn the diff. so....there you have it. i drowned my sorrows with a few beers....and now...all is well. Well thanks for melting our brains ;) > ok...i've got an LRP Digital Reverse Pro.... > [quoted text clipped - 25 lines] > > anyone know what i might be doing wrong? |
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