HorcikDesigns Posted February 10, 2014 Posted February 10, 2014 (edited) Hi, Have somebody here some experience with twin 5292 (buggy motor) connected to single V2 reciever, used as a propulsion of a RC car? Will the IR reciever survive, or will it be destroyed?. ( I've tested the possibility of this with no load, and it worked. However, I do not want to risk to test it under the weight of the car.) Edited February 10, 2014 by Gzzig Quote
Saberwing40k Posted February 10, 2014 Posted February 10, 2014 No, the receiver has a built in overload protector. That should keep it safe. The 5292 motors, however, draw so much current that no single battery box can power more than one. Quote
aol000xw Posted February 10, 2014 Posted February 10, 2014 (edited) The V2 receiver will overheat and cut power to the motors, bu won't get damaged. edit: nice sketch btw. Edited February 10, 2014 by aol000xw Quote
Hrafn Posted February 11, 2014 Posted February 11, 2014 (edited) I've actually been trying this same setup, and while as Saberwing40k said, the receiver will be fine, it won't work well overall. Philo has some very useful data at his motor comparison, battery comparison, and IR receiver pages. The conclusions from those and from experimenting are 1) One receiver can power at most one RC motor. You can plug in two, but they'll each operate at reduced power. 2) The rechargeable battery's overload protection kicks in really quickly, even if the motors are connected directly to it. One battery per motor might work, but since I only have one rechargeable battery I use a 9V AA battery box [to power two RC motors]. So far that setup works fine. Instead of using one receiver per motor, you can also route the power from the battery box through a switch to the motors. You can then use the receiver to control a M-motor which activates the switch. It's awkward, but it saves on receivers. Edited February 11, 2014 by Hrafn Quote
AndyCW Posted February 11, 2014 Posted February 11, 2014 Lose one of the 5292 motors in your diagram and you will be in business. The output power will be greater too. This way you don't have the inefficiencies of two motors contributing to the system. Even with a single motor, a single battery pack, and a single receiver the motor will be operating at less than full potential. The m motor relay mentioned above will bypass the receiver, but until the battery pack's current limiter is disabled the motor will still underperform. v/r Andy Quote
Hrafn Posted February 11, 2014 Posted February 11, 2014 Lose one of the 5292 motors in your diagram and you will be in business. The output power will be greater too. This way you don't have the inefficiencies of two motors contributing to the system. Even with a single motor, a single battery pack, and a single receiver the motor will be operating at less than full potential. The m motor relay mentioned above will bypass the receiver, but until the battery pack's current limiter is disabled the motor will still underperform. v/r Andy If I'm reading Philo's page right, the LiPo rechargeable battery can't get the buggy motor up to full power, but the 9V one can. It's not clear to me if the 9V can drive two at full power. Does anyone know? Whether this is useful to the original poster or not depends on whether he or she has that box, of course. BTW, the page of Philo's I should really have cited is the power curves one. Quote
HorcikDesigns Posted February 11, 2014 Author Posted February 11, 2014 Thank you (all) very much :) Quote
DrJB Posted February 11, 2014 Posted February 11, 2014 Not to digress but, those PF IR receivers are very 'finicky' ... they won't work when connected to a 9V train power box 2868b ether ... Quote
aol000xw Posted February 11, 2014 Posted February 11, 2014 (edited) In my experience nothing PF can power a buggy motor to its full potential without some tweaks. The best option is modifying the 9v battery box remove the thermal protection and then attach the motor to it using a switch. Then use the receiver with another motor to operate the switch. Edited February 11, 2014 by aol000xw Quote
allanp Posted February 11, 2014 Posted February 11, 2014 What about the old style 9v battery box? Quote
Marcel1980 Posted February 11, 2014 Posted February 11, 2014 I did some test with buggy motors and the pf. Test 1 ; 2 RC Motors with the rechargeable battery connected with infared : Outer output 780 RPM, Inner output 1040 RPM Test 2 ; same as above but with 1 RC Motor : Outer output 840 RPM, Inner output 1120 RPM Same tests but with the 9v battery pack included in very pf set ; Test 1 ; Outer output 780 RPM, Inner output 1080 RPM Test 2 ; Outer output 920 RPM, Inner output 1260 RPM Quote
aol000xw Posted February 11, 2014 Posted February 11, 2014 (edited) Even the best case isn't providing enougth power to the motor, RPM should be higher. Infrared and/or battery pack protection circuit are limiting power. edit: Forget what I said, test 2 on 9v 920/1260 is ok, But if that is under no load it may very well be that with some load power is cut. At least that was my experience with a single motor on V2 receiver attached to unmodified battery pack with non rechargeable batteries. Edited February 11, 2014 by aol000xw Quote
Marcel1980 Posted February 11, 2014 Posted February 11, 2014 Building a simple model now to see how they handle under a load Quote
MrNumbskull13 Posted February 11, 2014 Posted February 11, 2014 Is the RC system 9V? How many batteries does it use? Quote
Marcel1980 Posted February 11, 2014 Posted February 11, 2014 I used the normal pf battery pack. But i think its 6 batteries. Quote
MrNumbskull13 Posted February 12, 2014 Posted February 12, 2014 Oh, I thought it used a larger number of batteries and that's why the motors weren't getting enough power from the pf system. Quote
Hrafn Posted February 12, 2014 Posted February 12, 2014 Oh, I thought it used a larger number of batteries and that's why the motors weren't getting enough power from the pf system. The RC motors were designed for use with the RC reciever / steering unit, which is also 9V and powered by 6 AA batteries (each of which is 1.5V). The issue with the 9V battery box seems to be that it, like the other boxes, has a current limiter in it to protect against overheating. Presumably the RC unit does not, or has a higher maximum current limit. Quote
Cwetqo Posted February 12, 2014 Posted February 12, 2014 I own original RC RC buggy and also disassembled receiver/battery unit. It has some very strong (at least by the looks) electrical elements (most likely transistors) which enable higher power to be unleashed. Quote
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