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Old Feb 7, 2007 | 11:26 AM
  #58  
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cozzfather
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From: Altrincham
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Originally Posted by jbrayley
Originally Posted by cozzfather
Originally Posted by jbrayley
Originally Posted by cozzfather
correct me if i'm wrong but rally teams used
magnesio because rally cars often smack kerbs and drive on
flats hence the need for a stronger wheel, i can just see a concours
cozzie driver,whizzing down the road sideways clipping kerbs and then
driving on a puncture for 2 miles,i reckon you will be ok with light alloy
also a rally driver i spoke to reckoned some of the latest light alloy
speedlines weigh so little and are so much stronger than wheels of old they save money and use them now
No, magnesium alloys are very strong in the sense that they will never crack from taking an impact from (for instance) a pot hole, but they are very weak at side imapcts. If you hit a curb from the side they will most probably crack. probably not that many kerbs on rally stages.........
theres loads of kerbs about when you go rallying mate
maybe not so many on single venue such as a airfield
I guess thats why they have about 12 spares with them

When i said not many Kerbs I meant in comparison to what a road going car will experience. And if you look at all the people interested in aquiring a set on this thread, they are primarily ROAD GOING cosworths. Not sure if many of them will see an airfield either, so not sure on your point there.
My point is they are not that strong when introduced sideways into a kerb...........and people with ROAD going cars will need to appreciate the need for spares as a kerbed alloy wheel is far more serviceable than a cracked magnesium one
old Tarmac rally wheels will almost certainly have been subject
to a hard life,bear this in mind if buying seconhand
i would not pay the extra for new magnesio speedlines
when the light alloy ones will do fine,and would not want repaired
rally wheels on a high performance car like my escort cosworth.


edited to add........

yep most people on here with escort cosworths do not go tarmac
rallying with them,hence why i can't see the point of buying magnesio versions when light alloy would do,unless you have loads of money to
spend or are following the leader
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