Quote:
Originally Posted by buggy#0
A lot of you will have probably seen these...
Attachment 56257
These seem to be the latest fad in RX, with all the 2013 Bulldog shells coming with one. They work in real life, they seem to be be working in RX, so will they work in 1/10 off road? I am intrigued by this, so every week I will be reporting the effects on stability when using one of these and on the adjustments I have made each week. Just as a note, the base car will be a Cougar SV2. Here's to an interesting project  |
To make any aerodynamic surface work you need smooth (Laminar) air flowing over them. I have not seen any other examples other than the one you have attached. But the air coming over the cab in this example would be turbulent as hell, completely useless in generating any aerodynamic effect. Plus I'm pretty sure these fins are primarily designed for drag reduction with control over air flow over the rear wing not stability.
If you look at the modern Le Mans cars (and old F1 cars) the cabs and bodies channel smooth air over these dorsal fins making them a lot more effective.
A gimmick i'm afraid. Any gain in performance would be purely psychological.