scx10 help
08-06-2014, 09:27 PM
#1
Thread Starter
scx10 help
So my honcho recently started doing this stupid thing... it like bounces and jerks. If I pressing the gas its like when a kid first drives he's all gas brake gas brake gas brake. I took the diffs and tranny apart and inspected, all seems well no broke or chiped . Its like the pinion is slipping of the big diff gear, all that when I tuned it when the axles and trans was apart it seemed to be OK till I got it pit back together.
Idk its weird its OK but its not, its stupid.
Help, please. Its being dumb
If I buy new diff it kinda seems like it wouldn't help bcuz it spins fine until its put back together.
Idk its weird its OK but its not, its stupid.
Help, please. Its being dumb
If I buy new diff it kinda seems like it wouldn't help bcuz it spins fine until its put back together.
08-07-2014, 06:54 AM
#2
Did you inadvertently change any esc setting like enabling drag brake? Maybe a transmitter setting like throttle trim?
To to double check the drivetrain remove the pinion or just set the mesh so pinion doesn't touch the spur. Now you can see how well the truck rolls and spin each driveshaft by hand to try and isolate any problem the drivetrain may have.
To to double check the drivetrain remove the pinion or just set the mesh so pinion doesn't touch the spur. Now you can see how well the truck rolls and spin each driveshaft by hand to try and isolate any problem the drivetrain may have.
08-07-2014, 07:30 PM
#3
It's your drive shafts. The U-joints or CVD joints (whichever you have) are not aligned.
Looks closely at the 2 halves of each drive line, there is a tiny "tick" mark at the base of the join. These little marks have to be in-line with each other for both shafts, otherwise they won't be in "sync." What you're witnessing is the fact that U-joints and CVD-joints don't transfer rotational energy perfectly. The more of a bend in the joint, the more they oscillate their output. What's happening to yours is that the joint at one end is flexing "in between" the one at the opposite end and the pulses are fighting each other. Both joints on the same shaft need to flex at the same time.
This phenomenon is the reason why all these scalers sounds like the gear / motor noise pulses when driven slowly. You can never get a constant and even rotation. What you're hearing is the sound of the gears being sped up and slowed down with every 90* swing of the drive lines. At fast speeds it occurs so quickly that you can't notice it.
Check your drive lines and I bet your problem goes away.
Looks closely at the 2 halves of each drive line, there is a tiny "tick" mark at the base of the join. These little marks have to be in-line with each other for both shafts, otherwise they won't be in "sync." What you're witnessing is the fact that U-joints and CVD-joints don't transfer rotational energy perfectly. The more of a bend in the joint, the more they oscillate their output. What's happening to yours is that the joint at one end is flexing "in between" the one at the opposite end and the pulses are fighting each other. Both joints on the same shaft need to flex at the same time.
This phenomenon is the reason why all these scalers sounds like the gear / motor noise pulses when driven slowly. You can never get a constant and even rotation. What you're hearing is the sound of the gears being sped up and slowed down with every 90* swing of the drive lines. At fast speeds it occurs so quickly that you can't notice it.
Check your drive lines and I bet your problem goes away.
08-09-2014, 03:57 AM
#6
check out this..... its THE BEST video ive found explaining how and why it happenes
https://www.youtube.com/watch?v=gmV4qwLfOMY
https://www.youtube.com/watch?v=gmV4qwLfOMY
