Brooklands screens vs areo screens

[Alan Bowler]

Following on from the 160 build manual thread, and "Tobinators", got me thinking about areoscreens (not windscreens, not going back).

Brooklands screens were so much better at *something* than the perspex race screens I have now. Partly wind deflection, but might be more complicated.

The surface area, height and position and angle of the screens isn't that much different. Would raising the perspex screen a few mm to let air underneath, avoid a vacuum etc., make a difference? Anyone tried this?

AB

[Tazio]

I've used the current race style plastic screen, the original more vertical VX race screen, and Brooklands.

In effectiveness I'd rate them as 1st. Brooklands, 2nd VX Race Screen, 3rd, Current Race Screen. 

The brooklands as you've said, can be moved to angle the airflow, but remember to treat it with rainex, no point having a clear visor when it rains if the screen is obliterated.( I found that out ) , with the VX Race screen I could ( but didn't ) travel at upto 70mph without glasses/goggles, this is not possible for me with the current race screen on it 

I'm only 5 foot 7, and run with lowered drivers floor, so if you are taller.....things might be different.

 

[Alan Reeves]

Tobinators ? as in for motor bike screens and specifically BMW GS screens?

I used them years ago and they worked. I then did a similar thing with the mini side screens on the 7 creating a gap to allow the wind between the side screen and the windscreen to avoid the rush/pressure of wind around the side screen and into the cockpit.

It also worked and the reduction in pressure was very noticeable.

Just saying...oh to do it involved moving the hinges from one side to another and the way they fixed allowed the gap.

A

 

[admaraujo]

Question...
Why do, some, people fill in the gap between Brookalnds and, stachion or scuttle?

[7 wonders of the world]

the perspex screens do scratch very easily, so if you need to see thro them bear this in mind

we used these in the wet in Karts....

https://www.kkckartshop.co.uk/turbo-visor.html

[Toughie]

I then did a similar thing with the mini side screens on the 7 creating a gap to allow the wind between the side screen and the windscreen to avoid the rush/pressure of wind around the side screen and into the cockpit.

Whooa!

I use the mini side screen deflectors and have exactly that problem.  I don't understand what it is you did, though. 

Please could you tell me how you did it.

[Alan Reeves]

Ah I knew it would come to haunt me posting that. I will go re look at what I did and 

hopefully describe it but essentially it reversing the hinges on the side screens to create the 

gap between the side screen and the upright edge of the windscreen.

Tobinators ( Non Standard parts ) on a BMW GS screen essentially lift the screen up and give a gap at the bottom thereby allowing air to pass through not just over.

Alan

 

[Alan Reeves]

The simple version is :

Take the hinges of the right side and transfer to the left side.

Take the side screen and re attach to the hinges But ensure you bolt them to the outside of the hinge

and this will cause the gap. 

I would send a picture but I dont have the screens anymore mainly because whilst they improve the situation I felt not enough for me to leave on and use more. It definitely worked bt I cant remember what speed it added, 10-20mph max I would say but thats pretty good for a day out blatting country roads

fell free to msg me a number if you want a chat

[Toughie]

Right on, I think I follow you.  I've got to peel the plastic off my car today to run the engine, so I'll have a shuftie at the fittings while I'm on, but I think I can imagine the result.

And, thanks, I will message you if I fail to get it.

To get the best effect without thus far, I've pushed the driver's deflector all the way forward, so it's only about 20% off the line of the windscreen.  I then chock it in place with a lump of wood, precision crafted with an axe.

So when you do this mod, do you let the deflector fold all the way back, thus sticking out as little as possible?

[Alan Reeves]

Not sure Im following that bit of wood scenario but most increase the bend of the side screen at the bottom

which means the side screen sticks out More. This is achieved with the likes of hot water ( ask others ) to allow

the bending without the nasty breaking.

A

 

[Toughie]

Thanks.  I know about the bending bit.  That gives me some indication of the angle of stick out.

It's odd, on my last car the buffeting was dreadful, on this one, nowhere near as bad.

And 7's look so good without side screens.