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The stupid questions thread.
- Thread starter fairy1
- Start date
I know where you can get a lightly used 911GT3RS with pdk box for a smidge over $400k. Powder blue, only one in Oz with the weissach package.
born-again-biker
Is looking for a 16" bar
Not sure. I think they have dropped in price a fair bit, but who knows what dealers are charging. There are different types of cvt too that use different oil.
My original questions stands though. How the flap can you compare a cvt to a geared system. How the heck does it not just slip under load. Some of hese cars even have tow ratings of up to 2500kg. What the hell.
Luv ya bruv. Beers on me if I run into you on the trails
The short answer is, you can't.
They are a different system altogether.
There is different CVT designs for different applications, but for cars the main design seems to be chain drive.
Two parallel shafts, with a perpendicular looped chain rotating around the two shaft mounted 'pulleys'.
One pulley has a fixed diameter and does not slip up or down against the chain.
The other pulley is actually two opposing cones that slide on the shaft and vary the effective diameter of the 'pulley'.
In a low power application (lawn mower or scooter) the friction between the rubber v-belt and the pulley/cones is enough to transmit power with minimal slip.
In a car, truck or farm equipment the variable pulley/cones are splined so the chain is forced to ride up and down the inside face as the distance between them is varied. And there is also some tricky fluid dynamics going on (specific shearing force) so that the chain doesn't actually wear /contact the cones (in theory anyway.... high mileage and/or load might prove otherwise...)
I did hear that many Pathfinder owners who decided to take Nissan's rated tow capacity as given, experienced a rare and frustrating phenomenon know as exploding CVT fuck-your-boating-or-caravan-holiday syndrome.
born-again-biker
Is looking for a 16" bar
Are they open to swaps bro?
slider_phil
Likes Bikes and Dirt
Upvote for Rick and Morty reference
Why?
Haakon
has an accommodating arse
I actually like CVTs... They’re an efficient design and it doesn’t feel like it’s slipping once you understand what it’s doing. They are smooth and downshift quickly and smoothly.
What I don’t like is transmission makers programming in false “gears” to get around non understanding customers whinging about it slipping... Take a clever and efficient design, and program out what makes it efficient...
Toyota have engineered in a “start” gear, which is a mechanical first gear to get off the line with a conventional torque converter response and then switch to the belt drive.
What I don’t like is transmission makers programming in false “gears” to get around non understanding customers whinging about it slipping... Take a clever and efficient design, and program out what makes it efficient...
Toyota have engineered in a “start” gear, which is a mechanical first gear to get off the line with a conventional torque converter response and then switch to the belt drive.
Flow-Rider
Burner
CVT is a modernised Vespa gear box. Pretty simple design with added electrics and planet gears for reverse.
Boom King
downloaded a pic of moorey's bruised arse
I like CVT too. They were quickly outlawed in F1 back in the day (1994), when Williams tested one in the back of their Renault powered FW15 (late 1993). Word has it that the car was a couple of seconds quicker than the regular FW15, which was already way quicker than any of its rivals.
slider_phil
Likes Bikes and Dirt
Pretty effective for certain farming operations too (constant rpm, differing ground speed). So PTO driven bailers etc.
But we do it a bit differently in tractors. No belts or anything. A hydrostatic control pump will stroke up or down to control shaft speeds within the transmission, effectively being the range control. They still utilise clutch pack setups for gears like a conventional powershift but it's all ECU controlled and speed is now infinitely variable due to the hydrostat.
They've been remarkably reliable too, thankfully
But we do it a bit differently in tractors. No belts or anything. A hydrostatic control pump will stroke up or down to control shaft speeds within the transmission, effectively being the range control. They still utilise clutch pack setups for gears like a conventional powershift but it's all ECU controlled and speed is now infinitely variable due to the hydrostat.
They've been remarkably reliable too, thankfully
scblack
Leucocholic
My MY2015 Forester had a CVT, very good gearbox, smooth with no problems at all. Did not take it off-road much though, apparently CVT's don't handle heat stress from 4WDing. I don't know though. If you used over 65% (??) of throttle it used to engage 6 "gear" settings so working hard it operated as a normal gearbox in effect.
droenn
Fat Man's XC President
because the world (RB) needs more rick and morty
That like the Simpsons and Seinfeld? Ask @moorey.
Calvin27
Eats Squid
Leading to next stupid question. Why did Rick freak out at cob planet?
pink poodle
気が狂っている男
What about the grips man? They cover all those fucking sweet vertical parallel lines!
Ultra Lord
Hurts. Requires Money. And is nerdy.
Why don't handle bar company's have a plain version to go along with their loud ones? Just cause it's black doesn't mean I wan't your branding plastered all over it. You don't pay me to advertise your shit, give me stickers I can peel off.
I like my NS bars, but the lame arse graphics are too much!