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oneten110



Member Since: 02 Jul 2011
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alloys or steel?
Post #737963 1st Nov 2018 9:45am
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Swine&Small



Member Since: 20 Mar 2017
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Post #737968 1st Nov 2018 10:45am
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leeds



Member Since: 28 Dec 2009
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Interesting video but am unsure how relevant to a steel v ali wheel debate.

OK going to make some assumptions here.

Steel is more maleable then aluminium. Casting metals tend to give a more brittle item then one formed by other methods.

Steel is rolled/shaped/welded to form a steel wheel.

Now is that style of ali wheel made by a casting process?


I would be reluctant to draw a general conclusion from that video that steel wheels are weaker then ali wheels.


Brendan
Post #738166 2nd Nov 2018 9:39am
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Bluest



Member Since: 23 Apr 2016
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I'm sure I've seen something before that concluded alloys were slightly stronger than an equivalent steel. The negative to that is that the brittle nature of a cast alloy is far trickier to repair at the roadside than a bent steel is. The marginal difference in strength is probably less important than DIY repairability if you got to remote places 2007 110 TDCi Station Wagon XS
Post #738169 2nd Nov 2018 10:14am
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blackwolf



Member Since: 03 Nov 2009
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A completely pointless video with no scientific value whatsoever, for many reasons (for example we have no idea of the load ratings of the wheels, the load was applied in a hopelessly unscientific place, etc). Those failures were completely predictable when the wheel is loaded in that way.

A whole lot of fun, though! It seems if you have a large hydraulic press you can break almost anything!

I am not sure that I would recommend that as a method of changing the offset of your wheels, either, even though it did seem to be effective.
Post #738180 2nd Nov 2018 12:20pm
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leeds



Member Since: 28 Dec 2009
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Agree with other comments about the value of this video.

The difficulty with these sort of videos/social media is that 'fake' news or urban myths can become real news/facts.

Now a quick look at the UNECE R124 which explains the testing of wheels for passenger cars. There is no static load tests in those regulations for steel and alloy wheels there are rotating bend test and a rolling test, and for alloy wheels only there is an impact test. For a 4x4 off road I would think that impact resistance is the more important requirement. When testing any items it is important to do the tests as set down by international standards wherever possible.

Apart from 'fun' what were the aims of this video?

It can be fun when you have a range of test machines available to you. Largest test machine I have played with was a 1,500 ton machine. Now that is fun when you are testing multiple wire rope structures and something is not up to spec and lets go suddenly!


Brendan
Post #738193 2nd Nov 2018 2:08pm
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Cupboard



Member Since: 21 Mar 2014
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The hydraulic press channel is primarily an entertainment channel.

In this video, they don't tell you if the wheels were for the same car or had the same load rating so you have no way of comparing them.
Post #738202 2nd Nov 2018 2:44pm
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blackwolf



Member Since: 03 Nov 2009
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The press dispatched the poor plasticene figure with great effectiveness though!
Post #738206 2nd Nov 2018 3:26pm
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