Conceptual questions By mcgyvre (Read 1,024 times)

[drahken]

ok.  i went back over what your put.  im just answering the part about the roller weights.

and you read somewhere else that it doesnt work?

it works for me.  and you asked for an explanation.  using a weight scale as a, blueprint, for how the cvt works.  i cant figure out much more than that. 

the belt should be taught,

you konw taught... tight, taught, on the cvt system.  almost like the other pulley is hanging.  then instaed of thinking of the drive pulley the one, thats hanging as spinning and some roller weights magically sliding theyre way up this ramp plate, on the back of the variator, just think of it as a weight scale.  just start pulling.  you could nail it to your wall. i made this imagery here for you to figure out how the cvt works.  when you weigh it down, by pulling, its the same concept as the roller weights sliding up in the top of the variator because of centrifical force.  but remember, the rear pulley slides like out, away from the other side when it drops down, like, i think CCW. same direction the belts spinning.  too.  at least on mine.  it does anyway.

if you where to put a scale, like how they figure out how much a fish weighs, and hooked it to the belt, and pulled, on the scale.  you could figure out what about of weight or ft/lbs since its worked. 

of torque.  figure out, rpms of motor, weigh, add up centrifical force.  figure out when it shfts.

but whatever we just swap roller weights out until it runs.  mine works pretty good.  what ive heard is shift, right at powerband takeoff.

[Guitarman]

drahken,

Is English a second language for you? Just kidding bud. I know what your talking about but the way you typed it out ...


If you have a scale, it doesn't matter if you put small and large weights in it or all of one kind. It still weighs. The scale has a beginning threshold and the weights have to add up to more than that. As long as they do, it doesn't matter how they are mixed up.

[mcgyvre]

@ drahken - With all due respect, I actually did not ask how a CVT works. I asked to have explained how mixing weights works. I have spent a significant amount of time reading over the responses generated. My mind works differently than most, but now that I understand the concept, I was able to understand that you were saying the same thing, only in a different way. Everyone's mind is wired differently (especially mine, I'm quite sure) and, through no fault of yours, I was not able to grasp what you were saying. I don't want you to think I was slamming you. It was my comprehension issue and your theoretically accurate explanation became clear once my light came on. I appreciate your input.

@ ALL - So, if my rpm drop on takeoff, lag on acceleration, and fall off significantly on hills, (if I get this), my OVERALL weight is too light AND my contra spring is too weak. Have I got it?

[Alleyoop]

Nope, your weights are to heavy. If going up a hill your loosing at lot of rpms as well as mph then your weights are to heavy. Going up a hill you should really only loose mph and depending on the length of the hill to the top only loose a couple hundred rpms.
Alleyoop

[Bashan]

Heavier weights do not react first. All of the weights react at the same time, just with different amounts of outward force. All molecules are trying to move in a straight line as they are moving in a circle, like on a merry go round, that's is centrifugal force and that is what pushes them out. An object with more molecules pushes out harder than one with less molecules, but all of the molecules are subject to the same force and begin trying to move "out" at the same time.

All of the weights are packed tightly in the variator, they do not slide around independantly. They all begin to push on the inner pulley at the same time although the heavier ones push harder. Therefore, the weights push outward with a combined weight at all times other than when at rest. In this regard Drahken is correct and we apologize for any offense. Also, I do not think this is techno babble and is pretty straight forward. It is an important concept in the function of a CVT and needs to be understood. Rich 

[mcgyvre]

This is some good stuff, guys. Now I get it, for sure. So, mixing weights does work. My entire misconception was that the lighter weight did not move outward at the same time. It kinda came together at a concept level with the weak guy helping to push the car and Rich brought it home with the post above. After gaining this comprehension, I can see, in hindsight, that Drahken was not babbling. His explanation was accurate, I just wasn't comprehending. All y'all are such a wealth of knowledge and information! Thanks.

[cyborg]

Ouch,,,, glad that is put to bed,,,, my brain was starting to itch,,,, for a minute there I thought Rich was going to go all inertia mass and polar moment on us,,, Whew

[Bashan]

Pedro, if your brain itches have Anthony Hopkins scratch it for you. Drahken, we kinda ganged up on you but we keed...we keeed...

So let's nail this topic to the wall, even if we have to get somebody to help us, shift into second, and move on! I'M SORRY!! I couldn't stop myself....and I'm a smart arse. Really, we were just jabbing at you....and Alley started it.