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Old 28th November 2020, 23:24   #11
Alf Best
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I can see what Mike is saying here, in his picture the flattened part of the curved section where the forming mandrel originally clamped the wire is in the same place on both compensators.


However is it not the case that the the bend "unwinds" over a period of time which explains why the wire is no longer parallel in a stretched compensator?


In any event the mini version is a wholly better idea, which can actually compensate as opposed to being a simple cable splitter.
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Old 28th November 2020, 23:29   #12
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Quote:
Originally Posted by Saga Lout View Post
The third one isn't as visible as the first two so I've taken the shot of those two. The bending process seems to have been rather random or maybe the riveting process was. It's not a total issue related to stretching, it's an issue related to who made your compensator.
As you can clearly see, the bend marks are in the same places but the lengths of the compensators differ, it's not a big problem really but one I for one am aware of for future reference.
Thanks but see T-cuts post just before yours. What he shows is what I was looking for, the opening up of the U

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Old 28th November 2020, 23:34   #13
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I always weld up a standard one with the least amount of movement possible.
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Old 29th November 2020, 03:19   #14
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Here are a couple of brand new ones from 2011 it's all been covered before. They were all made the same.

1

2

3

4

New and welded one together.
5

Does the bar really open up or pull round the pin
6

7

Testing.
8

9

10
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Old 29th November 2020, 12:47   #15
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Has anyone ever thought to subject the rod to a metallurgic test? It is, presumably, tensile steel. The leverage torque from a relatively short lever like the handbrake is nowhere near the load it would take to 'stretch' the rod given the length of cabling (presumably mild steel?) involved. Several tons I should think. Any 'stretching' would take place elsewhere.

When assessing the varying lengths of the rods maybe it might be wise to consider the efforts of earlier owners prior to the hugely effective replacements from Steve (Arctic) to replace suspected 'long' ones. Given the frequency of modding by so many owners it could by why the lengths vary. I can't think they would have been factory installed!
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Old 30th November 2020, 10:08   #16
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Never tested one but the rods appear to be made from a malleable steel, not as strong as high tensile but they will failsafe - elongate as opposed to break.

As Steve said this has all been covered before and nothing else stretches - these compensators elongate over time.
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Old 30th November 2020, 13:14   #17
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Thanks Mike. Ive pondered this for a long time, 12 years in fact, and confess to continuing curiosity. Whatever the cause is, it does happen. I for one was relieved to compensate (!) for the problem with an Arctic special possibly the most effective mod available!

However, at the risk of boring more than a boring thing, I remain sceptical of the cause. My apprenticeship many years ago included analysis of various substances and the loads causing stress fracture that might be expected specifically in metals.

The load applied at the handbrake/fulcrum, necessary to stretch that rod would possibly result in catastrophic failure elsewhere. Beyond normal human endeavour!

Until a proper lab test is taken I cant believe that sturdy rod yields to the puny tug from 6 of lever travel! If that could be explained Id be very happy!
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Old 30th November 2020, 15:18   #18
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I'm with you on that Ray - interesting to see exactly why the compensator elongates. There is a bit of mechanical advantage in the handbrake of course, and maybe temperature change adds a bit of force during the time the handbrake is applied?


Funnily enough back in the day I bought a replacement front cable before this came to light, and when I removed the old one it was a tad shorter than the replacement.
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Old 30th November 2020, 15:49   #19
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I think I've got it! Yes, I've got it! As in the rest of the Rover chain, it's the magic in the metal!
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Old 1st December 2020, 18:41   #20
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Slightly off centre, but I think that they stretch because, they can.There is nothing to stop them, and when you hear some people pull on the handbrake, it would be surprising if they did not. Sounds to me some people think that they have to almost pull the handbrake through the floor. I have cringed some times when listening to the person next to me in the car next to me at the lights, or Asda car park
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