stonedef Posted September 28, 2016 Share Posted September 28, 2016 My sons FTX Bugsta has started overheating the motor and battery to the point you can't touch them. The car is stock and has hardly been used. He broke the suspension last week, which has been repaired, but the drive shaft is slightly bent could that be the cause?? But I have checked that the spur and pinion are set right and the wheels are free running and not binding and all seems to be ok there. As I'm still finding my way again in the RC world after a 15yr absence, any suggestions would be greatly appreciated Quote Link to comment Share on other sites More sharing options...
dazp1976 Posted September 28, 2016 Share Posted September 28, 2016 3 minutes ago, stonedef said: My sons FTX Bugsta has started overheating the motor and battery to the point you can't touch them. The car is stock and has hardly been used. He broke the suspension last week, which has been repaired, but the drive shaft is slightly bent could that be the cause?? But I have checked that the spur and pinion are set right and the wheels are free running and not binding and all seems to be ok there. As I'm still finding my way again in the RC world after a 15yr absence, any suggestions would be greatly appreciated Don't use it on grass? Quote Link to comment Share on other sites More sharing options...
stonedef Posted September 28, 2016 Author Share Posted September 28, 2016 It gets used on a mixture of short grass and tarmac at the local park. It seems to have only starting overheating since the crash last week, hence me looking at the drivetrain binding in some way Quote Link to comment Share on other sites More sharing options...
chewbacca Posted September 28, 2016 Share Posted September 28, 2016 Is it brushed or brushless? Quote Link to comment Share on other sites More sharing options...
stonedef Posted September 28, 2016 Author Share Posted September 28, 2016 Its brushed running Nimh batteries Quote Link to comment Share on other sites More sharing options...
chewbacca Posted September 28, 2016 Share Posted September 28, 2016 Everything is spinning freely? Try a slightly smaller pinion, don't go mad, just 2 teeth to start. Quote Link to comment Share on other sites More sharing options...
stonedef Posted September 28, 2016 Author Share Posted September 28, 2016 Yeah everything seems to be running freely. I'll try a smaller pinion, it looks like the stock is 17t so I'll grab a 15t to start with. Cheers for the help Quote Link to comment Share on other sites More sharing options...
chewbacca Posted September 28, 2016 Share Posted September 28, 2016 No problem. Hope the 15t helps. Let us know. Quote Link to comment Share on other sites More sharing options...
NuttyProfessor Posted September 28, 2016 Share Posted September 28, 2016 straighten the shaft and open the diff cases, could have shunted something, while you have the diffs out, decent grease in there. Could have chipped a tooth also causing drag. 2 Quote Link to comment Share on other sites More sharing options...
stonedef Posted September 29, 2016 Author Share Posted September 29, 2016 I had planned to straighten the shaft at the weekend, so I will check the diffs as well. Any recommendations on any grease to use?? Quote Link to comment Share on other sites More sharing options...
NuttyProfessor Posted September 29, 2016 Share Posted September 29, 2016 good quality black grease, Lucas red and tacky....... Quite a few out there chap. Might be a thread on the forum somewhere. Quote Link to comment Share on other sites More sharing options...
chewbacca Posted September 29, 2016 Share Posted September 29, 2016 There's a thread for owners of the platform. Vantage/Carnage owners. Quote Link to comment Share on other sites More sharing options...
dazp1976 Posted September 29, 2016 Share Posted September 29, 2016 I damaged a bl motor in a crash once when the mount snapped. Seemed fine but was hotter, rotor was just catching the stator in certain points. Was a smooth mark on front end on lamination's ergo stator damaged. On another there was a chipped tooth in the front diff spider gears, was jamming on occasion but didn't affect it moving but the motor was picking up on it. Quote Link to comment Share on other sites More sharing options...
stonedef Posted September 29, 2016 Author Share Posted September 29, 2016 Ta. I'll check that out tonight, a bit of light reading while the footie is on 1 Quote Link to comment Share on other sites More sharing options...
stonedef Posted October 4, 2016 Author Share Posted October 4, 2016 Well I finally got around to fitting the smaller pinion and it doesn't seem to have made much difference, guess I'll be stripping down the difs this weekend to check for any other damage Quote Link to comment Share on other sites More sharing options...
chewbacca Posted October 4, 2016 Share Posted October 4, 2016 Bummer. Oh well, a full strip down won't do it any harm. Quote Link to comment Share on other sites More sharing options...
capri-boy Posted October 4, 2016 Share Posted October 4, 2016 On 9/29/2016 at 08:35, stonedef said: I had planned to straighten the shaft at the weekend, so I will check the diffs as well. Any recommendations on any grease to use?? Try marine grease - a tub that'll last forever just doing RC's should cost you about a £5. I use it on all my diff's that aren't sealed (whereas I use oil). I can't remember whether FTX diff's are sealed / good for oil but Chewie will know. 1 Quote Link to comment Share on other sites More sharing options...
chewbacca Posted October 4, 2016 Share Posted October 4, 2016 I've got a tub of Comma Multipurpose Grease, it's useful stuff. The diffs can indeed hold oil, I've put shock oil in the Hooligan's diffs and it's running sweet as a nut. Quote Link to comment Share on other sites More sharing options...
stonedef Posted October 9, 2016 Author Share Posted October 9, 2016 So yesterday I stripped down the diffs and checked for damage and all was ok, so I re greased and put it back together and he ran it. So now its not overheating anymore, which is good but I wish I could have found the problem for future reference. So we were out today and he broke the front suspension holder again, so replaced that and checked all the steering etc. But while doing that I noticed the steering servo seems to be under load all the time (buzzing/humming) with no input on the receiver. Looks like a new servo could be needed Anyway I would like to say thanks for all the help 1 Quote Link to comment Share on other sites More sharing options...
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