myothercarsa2cv Posted May 17, 2009 Share Posted May 17, 2009 So very kind chap at the garage said he's happy to let me borrow his ali folder/guillotine and nibblers So I'm going to make me an undertray. It may even end up looking like a diffuser. Any pointers? I've seen 7 degrees bandied around as the optimal angle, so I guess I'll go for that. Do you think 1mm is thick enough? Too thick? I think I'm also going to make one for the front half of the engine bay, just a short one to go behind the nose cone. I'd love to be able to make a front wing like this, but I am going to stick with the flat bits to start with! John _________________________ Bugsy: '82 2cv6 (Back on the road!!! 😬) Talloulah: '08 1.6K Classic (Grubby ) Link to comment Share on other sites More sharing options...
Dickie Normuss Posted May 18, 2009 Share Posted May 18, 2009 I would think 1mm will be far too thin, try more like 2-3mm VX HPC - Loud and proud here Adding power makes you faster on the straights. Subtracting weight makes you faster everywhere Link to comment Share on other sites More sharing options...
jchasey Posted May 18, 2009 Share Posted May 18, 2009 Have you thought about making a front splitter/numberplate holder like this? (right at the bottom of the page). Link to comment Share on other sites More sharing options...
u01rsb Posted May 18, 2009 Share Posted May 18, 2009 I believe the old double diffuser is the best way to go if you start to get a bit handy with the aluminium fettling. Seems to have worked very well for Jenson and his mates 😬 Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted May 18, 2009 Author Share Posted May 18, 2009 Double diffuser is definately on the cards! Jenson and I have been comparing designs... Ric, wouldn't 2-3mm be excessively chunky? Looking at 1mm the other day, once folded it seemed pretty rigid. I made a miniature mock up in card, looks the business 😬 jchasey, definately thinking about a splitter of some sort, but can't go too low - still have to go over bumps! John _________________________ Bugsy: '82 2cv6 (Back on the road!!! 😬) Talloulah: '08 1.6K Classic (Grubby ) Link to comment Share on other sites More sharing options...
Jason Plato Posted May 18, 2009 Share Posted May 18, 2009 I made one in 1.2mm and it was too flimsey ☹️ it did add 430g of downforce which counter acted the front nosecone whiskas 😬 here is my Duratec R .... C7 TOP Taffia joint AO with Al Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted May 18, 2009 Author Share Posted May 18, 2009 Too flimsy! Will have to go slightly thicker then... John _________________________ Bugsy: '82 2cv6 (Back on the road!!! 😬) Talloulah: '08 1.6K Classic (Grubby ) Link to comment Share on other sites More sharing options...
Dickie Normuss Posted May 18, 2009 Share Posted May 18, 2009 Yeah, about 2-3mm should do it 😬 😬 VX HPC - Loud and proud here Adding power makes you faster on the straights. Subtracting weight makes you faster everywhere Link to comment Share on other sites More sharing options...
Paul Gibb Posted May 18, 2009 Share Posted May 18, 2009 Dave L7 FUN Link to comment Share on other sites More sharing options...
Jason Plato Posted May 18, 2009 Share Posted May 18, 2009 What have I done Paul ? it was too flimsy, the verticle bits vibrated at speed and then cracked ☹️ here is my Duratec R .... C7 TOP Taffia joint AO with Al Link to comment Share on other sites More sharing options...
Paul Gibb Posted May 18, 2009 Share Posted May 18, 2009 You told me it was 530g L7 FUN Link to comment Share on other sites More sharing options...
Jason Plato Posted May 18, 2009 Share Posted May 18, 2009 😬 here is my Duratec R .... C7 TOP Taffia joint AO with Al Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted May 18, 2009 Author Share Posted May 18, 2009 Perhaps it generated 100g of lift too... 😬 Thick it is then. Didn't know ali could crack... Now that is a worry. How do they get away with it in glass fibre, or carbon fibre? Surely ali would hold together better? John _________________________ Bugsy: '82 2cv6 (Back on the road!!! 😬) Talloulah: '08 1.6K Classic (Grubby ) Link to comment Share on other sites More sharing options...
Fishy Dave Posted May 18, 2009 Share Posted May 18, 2009 I've had my lowered floors made from 2mm alloy, and that is very strong when folded and welded. David Smitheram, Wiltshire (South) AR, 07718 368173. 1400 supersport race car Link to comment Share on other sites More sharing options...
k.russell Posted May 18, 2009 Share Posted May 18, 2009 think its vibrations that crack ali, once it has been bent it doesnt like bending again and cracks easily. i made an airbox and backplate to hold it out of ali and both cracked due to vibes. now replaced with glass fibre. Kevin R black(but sometimes orange)-ali HPC here Link to comment Share on other sites More sharing options...
paul cardy Posted May 18, 2009 Share Posted May 18, 2009 Hi John Not ali i know but some food for thought. *confused*http://s499.photobucket.com/albums/rr352/hilbilchillbil/ Link to comment Share on other sites More sharing options...
nickh7 Posted May 18, 2009 Share Posted May 18, 2009 Dave is that the weight of your pies Fuel your Addiction here Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted May 18, 2009 Author Share Posted May 18, 2009 Paul, that's a sweet looking piece of kit - much nicer than anything I'll be able to knock up!!! Where did it come from? John _________________________ Bugsy: '82 2cv6 (Back on the road!!! 😬) Talloulah: '08 1.6K Classic (Grubby ) Link to comment Share on other sites More sharing options...
taffyracer Posted May 19, 2009 Share Posted May 19, 2009 also Reverie make them Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted May 19, 2009 Author Share Posted May 19, 2009 With added 'not-showing-you-very-much' pictures... So I can't copy them! Doh! 😬 John _________________________ Bugsy: '82 2cv6 (Back on the road!!! 😬) Talloulah: '08 1.6K Classic (Grubby ) Link to comment Share on other sites More sharing options...
millsn Posted May 20, 2009 Share Posted May 20, 2009 Also sold here Link to comment Share on other sites More sharing options...
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