x14xe sport
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Registered: 27th Apr 09
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as above building up a track car it currently has 14" sport 3 spokes with 185/65/14's but may swap to 15" steelies with 195/45/15's. the alloys seem pretty heavy tbh and no i cant afford a set of light weight carbon fibre rims before anyone mentions it, stictly budget building 
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CorsaSport14
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Registered: 11th Nov 07
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carbon fibre rims wont be very strong 
Weigh your spare steelie in the boot? If you have one that is 
[Edited on 13-05-2009 by CorsaSport14]
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x14xe sport
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Registered: 27th Apr 09
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got nowt to weight them with :-(
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mattk
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Registered: 27th Feb 06
Location: St. Helens
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quote:
Originally posted by CorsaSport14
carbon fibre rims wont be very strong
really?
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Hamish
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Registered: 4th Apr 05
Location: Ashtead, Surrey Drives: 100bhp Mint with Hole
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quote:
Originally posted by CorsaSport14
carbon fibre rims wont be very strong
where is your proof to back this up? 
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john_c20xe
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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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strong but veru fragile! not nice when hitting a pot hole?
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Ben G
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Registered: 12th Jan 07
Location: Essex
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quote:
Originally posted by CorsaSport14
carbon fibre rims wont be very strong
carbon fibre is much strong than steel or alloy, hence why some exotica manufacturers produce their cars with carbon fibre wheels on.
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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I think he's refering to the durability of carbon fibre, its very tensile but not very good at absorbing shocks. Once the resin starts to break up CF starts to loses its strength as the fibres can move.
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ed
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Registered: 10th Sep 03
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quote:
Originally posted by john_c20xe
strong but veru fragile! not nice when hitting a pot hole?
Keep digging.
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ed
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Registered: 10th Sep 03
User status: Offline
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quote:
Originally posted by DaveyLC
I think he's refering to the durability of carbon fibre, its very tensile but not very good at absorbing shocks. Once the resin starts to break up CF starts to loses its strength as the fibres can move.
So that's why skis and snowboards are made from carbon fibre, and can flex and absorb massive impacts?
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Ste
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Registered: 5th Mar 03
Location: Taif, Saudi Arabia
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I work for BAe Systems who are one of the world leaders in composites. The Eurofighter I work on has extensive use of CF in it's skin. The company has invested billions in the development of of carbon fibre to the extent that it builds McLaren's F1 chassis for them. Having said that, they do not use CF for making wheels. A fighter jet is built with no compromise and money isn't really a question. The jets have magnesium alloy wheels. These are strong and light. If carbon was lighter and equal strength it would be used, but it isn't. On that basis alone I would agree that the use of CF for wheels isn't plausible.
CF is very prone the damage and is very fragile. A dropped screwdriver on the wing can cause severe damage meaning the whole wing skin needs replacing. CF cannot absorb impact in the way aluminium can.
Skis and snowboards don't use CF on it's own. It is combined with another material like plywood to provide the strength and the CF makes up the coating, using a more flexible resin.
I would rather lose by a mile because i built my own car, than win by an inch because someone else built it for me.
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richc
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Registered: 24th Mar 07
Location: Ilkeston
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quote:
Originally posted by DaveyLC
I think he's refering to the durability of carbon fibre, its very tensile but not very good at absorbing shocks. Once the resin starts to break up CF starts to loses its strength as the fibres cant move.
Brittle
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stubs
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Registered: 30th Jun 02
Location: Bolton
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You can get CF wheels for motorbikes
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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quote:
Originally posted by ed
quote:
Originally posted by DaveyLC
I think he's refering to the durability of carbon fibre, its very tensile but not very good at absorbing shocks. Once the resin starts to break up CF starts to loses its strength as the fibres can move.
So that's why skis and snowboards are made from carbon fibre, and can flex and absorb massive impacts?
They FLEX, conventional wheels arent supposed to flex, if they did flex to abosrb impacts the drive would be a little bit hairy!
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