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double UJ'd propshafts

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clbarclay:
Skipping rope???? :lol:

I preffer to use a rope, but whatever takes your fancy (or your hand off)

Mudlark:

--- Quote from: "datalas" ---
--- Quote from: "clbarclay" ---As smo says, except its cardon joint, a double cardon joint would be the equiverlant of 4 UJs or a cardon joint at each end of the propshaft.

The important difereance is that in a cardon joint the spiders are linked together so that they are at exactly the same angle all the time. Just using 2 normal UJs at one end of a prop shaft does not work.

The advantages of cardon joints over convetional UJs are reduce vibrations and because the angle is shared between 2 joints the propshaft can work at a greater angle.


Search for 'cardon' using the mud club search (top middle of the page) there is already a wealth of information on this site alone.
--- End quote ---


You *can* put two ujs together and it can work really well, assuming you're wanting to produce a mechanical hybrid between a bass drum and a skipping rope :D
--- End quote ---



PMSL :lol:  :lol:

Lee_D:
Getting around the jaguar sump trick

Shortened Jag XJ prop with bracket for the bearing carrier on the cross member.  8)

Eeyore:
Propshafts for Begineers No 1.

An interesting and oft overlooked fact of Universal Joints (UJs). Increase the angle they work trough by 5deg and the rate of wear increases by and order of magnitude. It's all to do with accelerations on the bearing surfaces apperently. So, add a lift to a truck, your wear rate increase by a huge amount and your prop dies quicker. Do lots of off-raoding with the axle at funny angles and it'll wear quicker.

A Cardon type joint, featuring two cunningly linked UJ joints in the common housing will halve the angle each UJ works at, at the specific end and accordingly reduce the rate of wear on each. Upshot- the whole things lasts longer.

There is a misconception that a 'wide yoke' prop does the same thing. It doesn't. The UJ is still working a the same angle, the rate of wear is unchanged compared to a smaller yoke UJ. Where Wide yolks do win out is where extreme angles of use are required. They can operate through a larger angle of turn without binding (which can be a really cool way of grenading a yoke!). They can also be stronger under high loads.

HTH
Cheers
 8)
Eeyore

SteveG:

--- Quote from: "clbarclay" ---As smo says, except its cardon joint, a double cardon joint would be the equiverlant of 4 UJs or a cardon joint at each end of the propshaft.

Search for 'cardon' using the mud club search (top middle of the page) there is already a wealth of information on this site alone.
--- End quote ---


You are all wrong! :twisted:  :twisted:

It's Cardan not Cardon! :wink:  :wink:  :wink:  :wink:  :wink:  :wink:

Steve :P  :P

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