Uni Joint coupling

I don't see a mechanical problem with it - but I fail to see the advantage either.

The use of needle roller bearings to allow slow intermittent movement where there is no requirement for low friction seems to be a bit of overkill.

John

I don't like the fact that it is all held together by 4 snap rings and I have found that needle roller bearings where there is limited movement (rotation) tend to wear quickly in one area, Regards Frank.

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Originally Posted by Aaron IIA

I was referring to one hookes joint being used to tow the trailer, and another hookes joint being used to provide power from the p.t.o.

Aaron

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Do you mean like the one that was prototyped for one of the forward control series that had a propshaft in the center and a much bigger version of a uj with the center hollowed out for it to mont in?

Worked well except the outer "uj" tended to bind

Sent from my SM-G920I using AULRO mobile app

Like this one?

http://www.4wdonline.com/Mil/LandRov...d.trailer.html

I was envisaging a similiar trailer, but with two sepetate, yet same style, universal joint coupled shafts.

Aaron

I think I'd prefer a treg coupling.

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Originally Posted by Slunnie

I think I'd prefer a treg coupling.

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And from memory when the soft bit wears out, one (presumably hi-tensile) bolt has to chew through another before the coupling is 'N/S'.

DL

I think the end loading, ie forward/ backward vibration caused by a corrugated road would soon see off a solid mounted UJ system like that. needle rollers in general dont like that type of impacts. Apart from that cant see a need.

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Originally Posted by Aaron IIA

Like this one?

Rubery Owen Powered Trailer for Land Rover 101

I was envisaging a similiar trailer, but with two sepetate, yet same style, universal joint coupled shafts.

Aaron

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exactly like that one.

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Originally Posted by schuy1

I think the end loading, ie forward/ backward vibration caused by a corrugated road would soon see off a solid mounted UJ system like that. needle rollers in general dont like that type of impacts. Apart from that cant see a need.

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I doubt that the vibration from corrugations etc would be a problem with a universal joint - failures of these on propeller shafts are not a common result of operation on corrugated roads where the tyres skipping on corrugations transfer the vibration to the drive train. And half axles with two U-joints and no slip joint have been used without problems as suspension links - Rover 2000 from memory. In this use, the vibration loads would be at least as large.

John