Greenie
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| posted on 13/5/12 at 04:24 PM |
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Diffuser / Handling
Well fitted the rear diffuser and went out for a blat for the first time since fitting it and I have discovered that, even though the rear of he car
seems glued the road, the front end has becoming strangely light.
Hence my question is should I be doing something with the front end or suspension to compensate?
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coozer
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| posted on 13/5/12 at 04:34 PM |
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Splitter on the front will help...
1972 V8 Jago
1980 Z750
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HowardB
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| posted on 13/5/12 at 05:39 PM |
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there is a very interesting discussion about this on the RGB forum, they conclude that both splitter and diffuser are required,...
I hope to understand a little more after I have completed the recommended reading by a bloke called Katz,..
hth
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again  and goes zoom)
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theduck
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| posted on 13/5/12 at 06:14 PM |
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Surprised to hear it's had such a dramatic effect. I always understood them to be a mostly cosmetic thing, and also helped prevent the parachute
effect of the open rear end.
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fimi7
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| posted on 13/5/12 at 11:35 PM |
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I saw similar comments on this very forum and assumed it was being made by someone who clearly did not understand that every little change has an
effect. I plan on adding both, the big question is how big a wing do I need on the front to balance it out.
My hope is not too large, otherwise I will tweak the diffuser to reduce it's effects. It's all a matter of balance.
--- Ali
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Custardpants
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| posted on 14/5/12 at 12:35 PM |
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Just added a splitter and aero'd front cycle wings to mine and it's noticibly better at the front - not necessarily any downforce
production - it's just removed excess lift, and also funnels more air into my oil cooler. will try to get some pics. Steering is still weighty
at unmentionable speeds. Which diffuser have you gone for? Did you put a flat floor on too? It's my next job to do.
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Steve Hignett
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| posted on 14/5/12 at 01:05 PM |
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This would do it...
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HowardB
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| posted on 14/5/12 at 01:15 PM |
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quote:
Originally posted by Steve Hignett
This would do it...
Nice, fancy one for my fury,....
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again and goes zoom)
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Greenie
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| posted on 14/5/12 at 05:51 PM |
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My diffuser s ne from MK and butts right up against the floor pan, which is flat. I would no have thought it would have made tat much difference but
it has, very surprisingly. My steering has never felt as light at speed how it does since fitting he diffuser..... If a splitter is he cure then
that's the route I will take, but I intend to manufacture this myself so some pics would be nice....... Thanks for the replies everyone!
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theduck
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| posted on 14/5/12 at 06:09 PM |
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Will keep an eye on your progress as I want to fit a diffuser to my kit and fancied a solitude to go with it, do be interested in your results.
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Hellfire
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| posted on 14/5/12 at 06:13 PM |
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Have you panelled the underside of the engine bay? TBH, I find it rather surprising that you say you can notice the difference and seem to be
suggesting that it has increased downforce at the rear. Most discussions on here have concluded that fitting a diffuser does very little to the
aerodynamic performance of a seven. I'm sure there are people on here who have actually carried out wind tunnel testing on sevens fitted with
diffusers and have arrived at the same verdict......
Is your diffuser much different to other designs? Got any pictures?
Phil
[Edited on 14-5-12 by Hellfire]
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theduck
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| posted on 14/5/12 at 06:23 PM |
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http://www.locostbuilders.co.uk/viewthread.php?tid=168163
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Davegtst
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| posted on 14/5/12 at 07:01 PM |
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Don't know if you get track driver magazine but they love a splitter and it sounds like it may help. According to them they need to be quite
thick and say 13mm ply is a good material to make then from. Apparently making one from a thin bit of ali or carbon is no good at all. Is under the
engine bay panelled flat.
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Greenie
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| posted on 14/5/12 at 07:13 PM |
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I panelled ender side f the engine bay last year, not realising what would do, it was to prevent road debris coming up into e engine bay, e car is
vertically flat underneath......
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