Originally Posted by
Solara
I really want to talk to you guys about this SPOOL issue that almost every fourm asked about on EVERY CARS (not just on TM E4 series).
Some said...it is the CVD, some said, it is the shaft, some said it is the steering angle.........
I said...it is the TIRES are not being balanced left and right (even on a brand new set of tires).
Right now...I am still not 100% sure that is the case because I don't have a tire balancer nor I know how to balance a set of tires myself. I am just reading from here and there and seeing all the reasons causing that. But I really want to see someone can proved that "THAT IS" the reason causing the front end vibrate voilenly when it is turning left or right...and thats only happening on using SPOOL. (you won't see that when using diff or 1-way on the same car with same tires and same parts). I know my Mi4 does that, TA05R does that, E4 does that, Xray does that....all of my TC cars does that when using solid spool up front.
Someone must have a SOLID PROOF to say "THAT" is the reason why it is vibrating....for me, that happened on a brand new car, used car, actually, any cars....and I don't believe it has anything to do with the dogbone, CVD, drive shaft, outdrives, suspension arm or steering knuckle's turnig too far (cause on E4, the knuckles is blocked by the C-hub...actually, I think it can turn in/out alittle bit more...)
It is a 100% learning request from me...cause I have seen so many ppl asked this question and never 1 solid final answer...
If you take off both front tires and do the same (throttle and turn left and right)...it won't vibrate.
It is the spool 100%. I know in front wheel drive drag cars they have a looked diff/spool just like are touring cars and my friend has his car like this. When you turn the wheel on his drag car that is street legal it does the same thing and binds up and vibrates and makes the car hop. In a diff like a rear car you have a posi which lets the each tire move faster or slower depending on how tight the turn so that way you have no binding. With a spool each tire is trying to move at the same amount of speedo which in a turn each tire travels a different distance, that would make each tire want to spin a little bit different speed, since the spool keeps them at the same speed you start getting the vibration. TIghter the turn the more vibration.
With a diff each tire spins at its own rate of speed and in tight turns compensates for how tight the turn is by letting each tire spin at different speeds and thus no virbration. The outside tire in a turn needs to spin faster to keep from vibrating and a diff or one way allows for this while a spool both inside and outside tires spin at the same speed so it creates the vibration or hop you get.
If it was tire balance issue when going straight your car would vibrate just as much whether you go straight or turn the wheels.