MR2 Roadster Owners Club

The Workshop => Performance Related => Topic started by: Anonymous on January 16, 2016, 17:23

Title: active spoiler / downforce
Post by: Anonymous on January 16, 2016, 17:23
What do you guys think?

I have come across a system to actively control suspension as you drive by measuring g-force and speed. Now this is where my brain is wanting to change it's design a bit and actually attach it's stepper motors to aero foils to instead make a system to actively control the angle of the aero foil to adjust downforce.

To make the system will cost a little over £600 and as some people know I'm currently modifying the bodywork to make it a bit wider.

So is this mad plan of mine going to be worth the effort?
Title: Re: active spoiler / downforce
Post by: 1979scotte on January 16, 2016, 18:59
No.
How often are you going to be going fast enough for it to make a difference.
Would it not just be a bragging rights thing?
Title: Re: active spoiler / downforce
Post by: mr-ed_smt on January 16, 2016, 19:58
Surely not worth the weight penalty.
Title: Re: active spoiler / downforce
Post by: 1979scotte on January 16, 2016, 20:09
Quote from: "mr-ed_smt"Surely not worth the weight penalty.

Same could be said for the wide body but with the power rich will be running wont be such a big deal.
Title: Re: active spoiler / downforce
Post by: Anonymous on January 16, 2016, 20:17
I was thinking mainly of the downforce in the bends to keep the rubber from slipping rather than top end. In truth I might get the system anyway for my suspension ie what it was designed for but I could also make it do this aero idea.
Title: Re: active spoiler / downforce
Post by: Anonymous on January 16, 2016, 20:19
Also the wide body will be lighter I recon than stock due to the material
Title: Re: active spoiler / downforce
Post by: monsi on January 17, 2016, 12:30
Are you thinking of actively adjusting the rear wing angle to generate more downforce? This would work but as scotte stated the speed required for it to have any effect would be too high for non track use or the wing size would be huge (pikes peak style), you would also probably find the front/rear balance would be lost increasing understeer.

I was thinking about a similar system a while back but rather than adjusting a rear wing, I was going to adjust a front spoiler in the same way as the supra did

https://www.youtube.com/watch?v=U3EbULnxSVI (https://www.youtube.com/watch?v=U3EbULnxSVI)

however this would probably need a flat floor, side skirts and a rear diffuser to provide the greatest effect but this would be far more effective and operate at lower speeds than a rear wing.  There were some threads on the SpyderChat Autocross forum regarding the benefits of a front splitter.
Title: Re: active spoiler / downforce
Post by: Anonymous on January 17, 2016, 16:08
I would be able to control 4 wings / flaps all at the same time with there own variant. I'm thinking I might just end up doing it even if it is just for fits and giggles