TheHighlander123
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| posted on 14/4/16 at 07:28 AM |
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Rear diffuser
As above.
For my Westfield SEIW.
Or even a guide to make one would do.
Thanks
Westfield SEIW 1700 Forged crossflow, twin 40s etc etc etc - Now about to do a ZX9R
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garyt
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| posted on 14/4/16 at 12:15 PM |
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Hi, there are a few folks who advertise in the westie oc mag and there was an article on how to make one over a couple of issues, on the westie forum
search diffuser and you will find , if your not in to much of a hurry I can pop up inverness way once I get my plates ......
http://www.carbon-nv.co.uk/products.html
http://forum.wscc.co.uk/forum/index.php/topic/114516-diffuser-as-seen-in-club-mag/
look for andy lower down in the comments on the 2nd link
Hope to see you about soon
Gary
remember we are not mad just creatively insane !!!!!
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nick205
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| posted on 14/4/16 at 12:26 PM |
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Personally not sure the low aero of a 7 type car warrants a complex rear diffuser myself. Simply a flat sheet boxing off the underside of the rear
should give you the same (or better) improvements.
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JacksAvon
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| posted on 14/4/16 at 05:59 PM |
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What Nick205 said.
Flat floor the car from front to back as a first step and develop from that point.
The sickness started in 2001 with a Robin Hood 3A, Prelit Westy,Tiger Cub, Tiger Avon, Tiger R6, 16v Mini, Sylva Fury Fireblade, Westfield Sei,
Mallock Mk11, Fireblade Locost, Tiger Avon, Procomp LA Gold, Mk26 Mallock...........and now a Mk18 Mallock.....LR750, Vandiemen FX02
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prawnabie
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| posted on 14/4/16 at 06:51 PM |
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Speak to Julian at Aerodynamic - he had a load he was trying to shift when he put his business on hold. I bought one and it cleans up the rear end a
treat, also stops much going in the void in front of the fuel tank.
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CNHSS1
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| posted on 14/4/16 at 07:27 PM |
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Anything to close off the rear end will stop the 'parachute' effect which causing drag and lift.
To be fair, as has been said the underbody aero is a mere sticking plaster for the problem that is the 'over car' aero on a 7type. Flat
flooring to clean up flow inc engine bay and careful choice of arches, will reduce negative effects though so well worth doing.
Simon McBeath wrote an article for Racecar engineering mag on a Caterham they had in MIRAs wind tunnel and drammati gains from arch design, fairing
for silencers etc, many of which are to be seen on hillclimbing and racing 7s still today. Worth a google.
Also pics of the Dick Spanner racing orange Westfield of Derek Hodder, small mods but highly effective
"Racing is life, everything else, before or after, is just waiting"---Steve McQueen
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jrod
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| posted on 14/4/16 at 08:03 PM |
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I bought one from
Playskool
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Andi
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| posted on 14/4/16 at 09:47 PM |
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GBS do various colours
GRP Black Rear Diffuser - GBS Zero,Kit Car - Fibreglass - GRP0022
Andi
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