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Post by turbobrick on Sept 18, 2006 21:49:51 GMT
How much end float in the centre shaft is too much?
i've read it should be about 1mm
Is 2mm to 3mm too much
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Post by Cooper on Sept 18, 2006 21:53:54 GMT
2mm aaah not sooo bad
3mm mmmmm do something about it...
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Post by turbobrick on Sept 18, 2006 22:06:04 GMT
how do you do something about it?
this is on a car i'm looking to buy so if it needs new parts i could do with knowing (might bring price down)
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Post by chris burgess on Sept 19, 2006 6:43:15 GMT
2-3 mm is a little excessive.
to reduce the amount you would need to strip and rebuild the entire centre shaft, including the one way roller and the slipper assembly. Doing this may damage the centre shaft, and that would then need to be replaced.
I would attempt to get the cost of a new centre shaft assembly knocked off the price of the car, or at least half of the cost.
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Post by Northy on Sept 19, 2006 7:07:57 GMT
It can be done but you do risk damaging it.
No time now, but if you want to know how I can post later.
G
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Post by wailinonya on Sept 22, 2006 2:35:33 GMT
turbobrick:
You should be able to break down the epoxy that holds the carbon shaft to the oneway sleeve or the slipper unit without damaging the shaft or attaching part. I have done this in the past to my X10 to do a custom mod in which I had to lengthen the shaft. If you use a lighter torch you can heat up the oneway sleeve or slipper end (preferably the oneway sleeve being that it is steel) until the epoxy begins to weaken, as soon as you can get the sleeve to break loose revove the heat. After just clean off the old epoxy, it should come off easily then put New epoxy on the shaft and reinsert with the amount of shaft play desired!
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Post by turbobrick on Sept 26, 2006 15:26:41 GMT
well the car got delivered today and has 2mm movement from shaft being all the way to the rear and all the way to the front,
is this too much?
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Post by wailinonya on Sept 27, 2006 2:43:48 GMT
Nah, if its only got 2mm to start with I would leave it be. That will work fine, you just don't want much more than that. When there is too much play the shafts ends ride to far out toward the ends of the Keyways on the Diff pinions and makes them want to spread apart and break. There are ways of dealing with this also, like the saver rings or the dual bearing trick but having too much play just results in more stress on the keyways.
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Post by chris burgess on Sept 27, 2006 8:52:14 GMT
an interesting idea that Graham North came up with, and I have copied, is to insert a small spring, one out of a biro is excellent, into the front of the shaft, where the one-way sits.
This has the effect of spring loading the front pinion, forcing it into mesh with the front diff, whilst still allowing play in the centre shaft. This seems to cure the problem of the pinions destroying themseleves, as the propshaft never moves too far out of the collars of the pinions.
It may be a useful addition to the centre shaft on your car to control the end float.
I know this doesn't make much sense, but I am dog-tired! :-/Maybe G will come along soon and make this make sense. ;D
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Post by Northy on Sept 27, 2006 11:32:25 GMT
It wasn't my idea, think it wa robbos, but I use it.
Works just like Chris said! ;D
G
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Post by Cooper on Sept 27, 2006 16:00:29 GMT
I also use that system but with a piece of rubber, and yes it was robbo's (dad?) idea  |
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