Kit Car Electronics Posted August 16, 2017 Share Posted August 16, 2017 Speaking of which, an aerofoil of the rough size of a splitter could generate about 50N force at 80mph, so it seems possible that there might be some small benefit... Quote Link to comment Share on other sites More sharing options...
Terryathome Posted August 16, 2017 Share Posted August 16, 2017 Sorry for spoiling your day @Dave (OnliestSmeg) - Joint Manchester AO but @Thrustyjust got it spot on with the brick thingy Quote Link to comment Share on other sites More sharing options...
Thrustyjust Posted August 16, 2017 Share Posted August 16, 2017 19 minutes ago, Dave (OnliestSmeg) - Joint Manchester AO said: Some just have to spoil it by trying to qoute scientific research and principles We've to justify the expense some how! SO - it works coz I felt it work! Sorry Dave . I told the wife it needs more carbon fibre to be better on the road. She fell for it , I am buying lots this weekend. Nothing scientific just worded right .............. and I know it will work too Quote Link to comment Share on other sites More sharing options...
Thrustyjust Posted August 16, 2017 Share Posted August 16, 2017 2 minutes ago, Terryathome said: Sorry for spoiling your day @Dave (OnliestSmeg) - Joint Manchester AO but @Thrustyjust got it spot on with the brick thingy Get back to your tapas Terry .................. git................ Quote Link to comment Share on other sites More sharing options...
Dave Eastwood (Gadgetman) - Club Chairman Posted August 16, 2017 Share Posted August 16, 2017 Where people get confused though is thinking they're getting downforce etc. They aren't, not in these instances anyway, as Justin said, you'd need something more akin to the Flymo's mods for that. However, extensive Winston el testing by various people and businesses of the Seven style shape has shown one thing in common; they all tend to suffer disproportionately high lift at the nose cone, and depending on how the other end is treated, either little lift, or fairly neutral at the rear of the the car, some even manage to achieve a little bit of downforce. (emphasis on little) The point of many of the standard front end treatments is trying to reduce the front end lift relative to the rear of the car and get a bit closer to neutral. This is achievable, to various extents and has been confirmed in Winston el testing on Caterhams before now. Quote Link to comment Share on other sites More sharing options...
Thrustyjust Posted August 16, 2017 Share Posted August 16, 2017 10 minutes ago, Dave Eastwood (Gadgetman) - Club Secretary said: Where people get confused though is thinking they're getting downforce etc. They aren't, not in these instances anyway, as Justin said, you'd need something more akin to the Flymo's mods for that. However, extensive Winston el testing by various people and businesses of the Seven style shape has shown one thing in common; they all tend to suffer disproportionately high lift at the nose cone, and depending on how the other end is treated, either little lift, or fairly neutral at the rear of the the car, some even manage to achieve a little bit of downforce. (emphasis on little) The point of many of the standard front end treatments is trying to reduce the front end lift relative to the rear of the car and get a bit closer to neutral. This is achievable, to various extents and has been confirmed in Winston el testing on Caterhams before now. My Westie doesnt suffer lift at 130 mph............................ allegedly ............. not a tea tray in sight either...... Quote Link to comment Share on other sites More sharing options...
Terryathome Posted August 16, 2017 Share Posted August 16, 2017 Front end lift is applicable to only a few Westfields who can overcome the brick aerodynamics and attain the speeds to make the car unstable. Now comes the debate at what speed. I'll get me coat on this one, naw only joking lol Quote Link to comment Share on other sites More sharing options...
Dave Eastwood (Gadgetman) - Club Chairman Posted August 16, 2017 Share Posted August 16, 2017 Actually the Caterham based testing I'm mainly recollecting was done largely at 100 mph, and even at such "low" speeds in the aero world, the forces were quite significant on the pre-treatment vehicle. Quote Link to comment Share on other sites More sharing options...
JamesT Posted August 17, 2017 Share Posted August 17, 2017 The is the autocar article being referred to 1 Quote Link to comment Share on other sites More sharing options...
Terryathome Posted August 17, 2017 Share Posted August 17, 2017 That's write up does not ring a bell as they did not experiment with windscreen and such like. Quote Link to comment Share on other sites More sharing options...
AdamR Posted August 17, 2017 Share Posted August 17, 2017 Can't figure out how the windscreen really affects things though, being a) near the fore-aft centre of mass of the car (thus not affecting understeer / oversteer balance) and b) being way behind the airflow going to the underside of the nose cone? Quote Link to comment Share on other sites More sharing options...
Rory's Dad Posted August 17, 2017 Share Posted August 17, 2017 Removing a windscreen improves mpg though! 1 Quote Link to comment Share on other sites More sharing options...
Thrustyjust Posted August 17, 2017 Share Posted August 17, 2017 2 hours ago, Rory's Dad said: Removing a windscreen improves mpg though! Never on the agenda of Westie owning for me. but prefer to see the screen covered in dead creatures than my face for an extra minus 1 mpg Quote Link to comment Share on other sites More sharing options...
Rory's Dad Posted August 17, 2017 Share Posted August 17, 2017 This observation comes from 2x trips to Cadwell around 100 miles - first time with windscreen and passenger - only just made it. Second time with aero (and no passenger) made it easily, car was much quicker at high speeds and was refuelled on site before lunch! This is the only mpg calculation I've ever made! (Sorry for the thread drift)! Quote Link to comment Share on other sites More sharing options...
Terryathome Posted August 17, 2017 Share Posted August 17, 2017 12 hours ago, AdamR said: Can't figure out how the windscreen really affects things though, being a) near the fore-aft centre of mass of the car (thus not affecting understeer / oversteer balance) and b) being way behind the airflow going to the underside of the nose cone? I need to get the magazine articles for you. It explains it better than what I could. 1 Quote Link to comment Share on other sites More sharing options...
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