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Author Topic: More CVT  (Read 514 times)

CROSSBOLT

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More CVT
« on: November 12, 2023, 03:00:32 PM »
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Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

Iahawk

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Re: More CVT
« Reply #1 on: November 12, 2023, 04:05:57 PM »
another good visual demonstration of how the 2 diff pulley sizes affect the speed.

Does anyone know when the first, real, 'modern' version of our cvt was used? I mean variator with rollers, belt, centrifugal clutch, etc.? (not an old leather belt and wooden pulleys!)
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2010 People S200 - sold after 8 wonderful years!
2014 Ninja 300
1996 Honda Helix
1984 Honda Nighthawk 650

CROSSBOLT

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Re: More CVT
« Reply #2 on: November 12, 2023, 07:45:06 PM »
Quote from: Iahawk on November 12, 2023, 04:05:57 PM
another good visual demonstration of how the 2 diff pulley sizes affect the speed.

Does anyone know when the first, real, 'modern' version of our cvt was used? I mean variator with rollers, belt, centrifugal clutch, etc.? (not an old leather belt and wooden pulleys!)
Rexnord and others have been making low speed variable drives for industry since the 1800's. The modern, "high speed" drives by T.B. Woods, Reliance, Dodge (not the car guys, the industrial guys) and others using rubber belts since the 1970's that I am familiar. Golf carts from late 70's early 80's used rubber belts and centrifugal clutches.
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Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

randyo

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Re: More CVT
« Reply #3 on: November 12, 2023, 09:17:37 PM »
snowmobiles have used CVTs ever since I remember
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RandyO
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JJJoseph

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Re: More CVT
« Reply #4 on: November 13, 2023, 08:26:09 AM »
The Dutch DAF econo-car made from 1961 had two belt-drive CVTs, one on each rear wheel, driven by a 750cc flat twin similar to a BMW flat twin.  If one belt broke, you could still make it home with the remaining one-wheel drive. Fun stuff! That's when cars were cars. If I could buy one now, I would. (DAF is now owned by PACCAR and makes trucks)
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