This unusual one-of-a-kind 16mm film is a reel of poorly spliced in-camera shots on reversal Ektachrome, with some high speed photography thrown in. Very likely depicting a proof of concept full scale model for demonstrating the "Dodge Drive" features to prospective customers in industry. This film has seen better days, but the color is still pretty good. Enjoy!
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#Dodge #film #60's
- Intro Music by Fran Blanche -
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Join Team FranLab!!!! Become a patron and help support my YouTube Channel on Patreon: http://www.patreon.com/frantone
#Dodge #film #60's
- Intro Music by Fran Blanche -
Fran's Science Blog - http://www.frantone.com/designwritings/design_writings.html
FranArt Website - http://www.contourcorsets.com
A lot of Mercedes have rubber bushes like this in their prop shafts. They aren't the entire joint, they still use U joints, the rubber just isolates torque pulsations. They last forever from what I've seen but then I've never seen on built this far back. I also installed them in dynamometer tests hooked to large (15L) truck engines. These are all steel belted rubber now.
Usually you have a lot of great insights to the subjects in your films but you have greatly missed several issue's in this demonstration film. Dodge makes all sorts of industrial couplings. This particular style was capable of relatively large misalignment between the driver or input shift to the driven or output shift. It also accepted vibration between the two shafts. They are still available today. If sized correctly for torque, these couplings just like belts can have a very long operational life. Yes they do wear out but most things do. Again if sized correctly, both will last a very long time.
I get your point, but on the other hand all couplings wear. And many CV couplings at least have a protective rubber sleeve, which is also under constant deformation (although the forces are small). If you look at tires, they're actually quite amazing, withstanding enormous forces under different temperatures, UV, etc for many miles and years.
So this design certainly has potential. Maybe it's not the best, but it could be good enough.
I've seen this type of flexible coupling, I always called them rubber doughnut couplers they were tolerant of drive mis alignment and the ones that I found that failed had been in a chemical environment and the rubber had been attacked. They are very useful where machines had frame flexing problems and the drive train was constantly shifting axis.
It seems to be an alternative to an Oldham shaft coupling, but able to work with an angle between the shafts. It's using the flexibility of the rubber to take up the difference, so the rubber gets stretched and squashed out of shape as the input shaft turns.
I guess there comes a point where it's easier to let something move a bit than get it perfectly in place. A manufacturing tolerance of ±0.1% does not sound like much; but it's a millimetre of displacement for every metre of shaft …..
I was an industrial mechanic and worked with this type of coupler. The material used nowadays appears to be polyurethane . Properly sized for the application they can last for years. The only time I saw them fail was when a mount for the driving motor or the driven device failed first. They are excellent at isolating vibration and slight misalignment.
Dodge Power Transmission, later on a division of Fenner. Those couplings are still available today, and are still a common part in industry. Yes the extremes of the ability of the couplings to show how much alignment error they can handle. But in normal use cases they last a really long time, and you can get a decade or more of service out of them, even in very rough environments. Yes have used them, and have replaced them as well, they are a pretty common item, in power handling capacity up to several hundred horsepower rating, and almost always used in machinery to couple shafts together to reduce vibration, or to handle slight alignment errors when you have multiple pieces coupled via shafting, and you are wanting to avoid having to precisely align them together.
That coupling is not cracked. They are not like a tire being a complete circle. I can't remember which machines at the factory I worked had them because they are very reliable so I don't remember having to replace one. Of course we tried our best to get them in alignment. Possibly at the extreme angles in their test setup they may eventually wear out but there has to be few situations where this would be done.
I used one of those to couple a 40,000 watt generator to a diesel engine, worked really well, they actually last many years. They were also used by large screw air compressor companies to couple the 100+ horsepower motors to the air-end. The thing you saw that you thought was a crack was not, that is where it opens to install it on the hubs, very easy replacement!
Not fluid drive transmission. If I'm not mistaken, fluid drive transmission system was a manual transmission system with a torque converter in front of the clutch system. This was a 1946 vehicle that you didn't need to clutch it to take off from a standstill. You could take off in 1st gear and shift up or take off in 3rd gear and not need to shift at all. My dad was a mechanic and they had a small/medium sized library of Chilton books. I studied them.!!! I've seen cut aways of engines, transmissions, air conditioning systems and electrical systems of vehicles from 1970's and back. The 1946 fluid drive was amongst the things I've studied. Three things I was adept at by the age of 10: how to process fish, God and electronic ignition systems of 1974. Even converted a GM electronic ignition module into an audio amplifier. You said fluid drive. This brings back most of my life.
Yeah thats not a tire. My Mercedes benz 300se has rubber couplings on the front and rear of the drive shaft because it has independent rear suspension so the differential is mounted solid to the unibody, compared to a regular solid axle rear wheel drive car with leaf springs or whatever. The rubber couplings are very strong and decrease vibrations and are designed to last for 20 years or longer which is impressive for a part that lives on a driveshaft underneath a vehicle
Many years ago I worked at a metal Refinery and we used some of these products. They work well in extreme environments where vibration or misalignment can cause the failure of a regular couplings between gearboxes and Motors especially when you're driving machinery that can have high shock loads. the Dodge company as I recall also manufactured or still manufactures bearings of various sizes and designs and gearboxes. We had all kinds of Dodge gearboxes and Fort Worth gearboxes in high-temperature and extremely rough environments. we were pretty rough on them and as recall they held up really well .
Fran. This comment has nothing to do with this video but a previous one where you talked about hydrogen power for cars instead of batteries. I just saw on the news today that they are cutting down trees in some countries to mine the land for NICKEL which is needed for the batteries, etc in electric cars such as the Tesla. They showed a quote from Elon Musk saying he would give big and sustaining orders for as much nickel as they could mine for him. Sooooo you were right about the real environmental cost of electric cars. You are proven right once again.