Touring car with i think a variable drive - RC-Monster Forums

crazyjr · **Touring car with i think a variable drive -** 10.25.2006, 02:24 PM

This was seen and photographed at the ihobby expo and thought it might be a variable drive, if so, imagine what you could do with a good brushless
http://rcforum.co.kr/rcbbs/view.php?...esc=asc&no=495

ygguB naM · 10.27.2006, 11:13 AM

Variable drive can't handle that much power.

rchippie · 10.27.2006, 11:24 AM

Quote:

Originally Posted by ygguB naM

Variable drive can't handle that much power.

Whats is variable drive ?.

10.27.2006, 12:54 PM

i don't think I get the point of that design..?

BrianG · 10.27.2006, 02:43 PM

There are several constant velocity transmission (CVT) designs in real cars, but due to design, they don't generally handle high power very well. Basically, it allows you to have an infinitely variable "transmission" without shift points. This site explains it quite well, and with pictures.

coolhandcountry · 10.27.2006, 04:20 PM

It reminds me of the CVT on my atv. I wonder how it works out.

squeeforever · 10.27.2006, 05:07 PM

So its basically like a torque converter, correct?

BrianG · 07:39 PM

Not really Squee. A torque converter is usually a set of liquid coupled plates (with fins) that allows you to have your car stopped and still have the engine running. Kinda like the Nitro clutch bell idea.

Think of a CVT as a pinion/spur arrangement that could somehow vary their tooth count on the fly. Even that's not totally correct since each tooth ratio creates seperate known ratio. A CVT is infinitely variable because there are essentially two cones with a belt in between. One one side, the belt is on the low part of the cone, on the other the belt is on the high side of the cone. Once the engine hits its optimum rpm, the belt slides up one cone at the same time the belt slides down the other cone.

Edit Looks like CHC beat me to it.

coolhandcountry · 10.27.2006, 05:31 PM

Not really. It is more like two gears that can change teeth as the rpm goes up. It works off ceterfigual force. The more rpm the more it changes.

coolhandcountry · 10.27.2006, 05:36 PM

Didn't mean to brian.

BrianG · 10.27.2006, 07:00 PM

That's OK, I would always defer to the superior knowledge of a mod. :)

coolhandcountry · 10.27.2006, 07:05 PM

I wouldn't say all that. I am only here to referre. :D I have some knowledge.
Not as smart or know all as others. I just try to do the best I can.

squeeforever · 10.27.2006, 11:21 PM

Actually, when I said torque converter, I meant like what a Polaris ATV has, which is common called a "torque converter" on them when I guess it is simply a CVT instead....

BrianG · 10.28.2006, 12:36 AM

Oh. I was thinking of what you'd have in a car with an automatic tranny...