Thompson Coupling CV joint (1 Viewer)

[serenity]

Got shown this the other day and i thought it might interest anyone with driveline angle issues. It's a CV joint with minimal efficiency loss that can run at extreme angles.

YouTube - Thompson Constant Velocity Joint - TCVJ ®

 

[CruisinFJ60]

Thats pretty neat.

 

[Tapage]

I would like to know how much it will cost ( make stronger one )

 

[CruisinFJ60]

I never knew a universal joint spun different speeds either. and yea, I wonder how long till we see this affordably priced for autos maybe even as upgrades for stronger parts.

 

[StevoJonesFJ60]

The only problem is that its only operates at a maximum of a 15 degree angle. The guys running high articulation rigs would need more than that.
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[serenity]

The only problem is that its only operates at a maximum of a 15 degree angle. The guys running high articulation rigs would need more than that.
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the impression i got from the video was that 15 degrees was the maximum for a traditional cv joint. he was just comparing the 2 products at the same angle to show the difference in operation.

ok so i did a bit more reading, they are rated to 15 degrees at 2500rpm which is a lot faster than an automotive prop-shaft is going to turn. at slower speeds it seems they can handle angles of 30 degrees maybe a bit more, which is a lot more than a standard cv.

heres their website Thompson Couplings Limited

 

[Fast Eddy]

they are rated to 15 degrees at 2500rpm which is a lot faster than an automotive prop-shaft is going to turn.

Huh? 6000rpm small block with 1:1 gearing can turn the prop shaft at, um, let me calculate...about 6000rpm; more with overdrive. Maybe not in a wheeler, but that's under 100mph with smallish tires.

 

[serenity]

6000 rpm with 1:1 gearing, 4.11 diffs and 31's is 134mph or 215kph! fastest i have pushed my cruiser is 145kph (90mph).

6000 rpm with 0.85:1 which is a h55f 5th gear would put you at 158mph. i dont know any high articulation vehicles that travel at these speeds or that run 31s

upgrade to 38" tires and you are pushing the 200mph mark.

now 2500rpm with 0.85:1 with 4.11's and 38's comes in at 80mph, or 65mph with 31's. i doubt you would be holding up traffic when driving to the trailhead.

 

[Eskimo]

OK, the RPM may not be an issue.. but 2000nm is only 1475lb-ft. a 1310 joint is rated for 1,600lb-ft continuous, and we all know they don't work well for a rear shaft. Plus, the small one (rated for only 369lb-ft) weighs 11kg - that's 24 lbs for the little one.

Good find though, we gotta keep looking in other areas to find new products!

 

[serenity]

Might not be perfect yet but it is a relatively new product, some of the ones on their site were rated for higher loads but of course with added weight and size. I guess if they had enough interest expressed in offroad applications, whether they be recreational or military/industrial they might put some focus on research for these areas.

Another thought is what materials are they using for different applications? Just like aftermarket axles vs stockers.

 

[Fast Eddy]

they are rated to 15 degrees at 2500rpm which is a lot faster than an automotive prop-shaft is going to turn.

6000 rpm with 1:1 gearing, 4.11 diffs and 31's is 134mph ... fastest i have pushed my cruiser is 145kph (90mph).

So 90mph = 4000rpm. I repeat my, "Huh?"