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Parabolic problems


jimfoo
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Less than a year ago I replaced my front RM parabolics because a leaf broke. After crawling under today to replace seals, I noticed one of the NEW ones is broken. Has anyone else had these problems with RM parabolics? Luckily I have one of the old ones left to replace it with.

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I had front one break aswell and still havent got round to changing it, but havent heard of anyone else breaking on i just thought it was down to my driving

I think any variable rate spring be it leaf or coil will have a shorter life than a constant rate one because it flexes more often in the shorter softer portion rather than distributing the flex over its whole length. Surface tension probably has an effect too. A thin leaf can be flexed through a greater degree than a thick one before stretching and fatiguing of the surface occurrs.

Bill.

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I think any variable rate spring be it leaf or coil will have a shorter life than a constant rate one because it flexes more often in the shorter softer portion rather than distributing the flex over its whole length. Surface tension probably has an effect too. A thin leaf can be flexed through a greater degree than a thick one before stretching and fatiguing of the surface occurrs.

Bill.

Both mine have broken in the thick portion by the spring plate.

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i've been running RM's for last 2 yrs with no problems, and i've had most makes fitted to mine, did they change them under warranty?

I haven't been able to get a hold of them. Their web site isn't there, and calling their phone # I just get an answering machine. :angry:

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