Dual fin!!? That looks pretty sweet. It must still be experimental.
I only got the single from Pete!
I haven't ridden enough since installation to make a statement yet, but it is a nicely crafted part, made from a stock RE intake. Installation was simple too.
Well.... if it were to ever stop RAINING in the pacific north west ! Hehehehe !
I'm sure Pete would love your input.
And then if you like... we can swap my double for your single, and you can see how you like it. I KNOW they are both good.
We actually put a different version of your's in that stock C-5 first and let the gentleman ride on it for a season... He loved the improvement. THEN... we took it out an tortured him for a season without one.
And he clambered to have it put BACK in the whole time. Then YOUR's was developed... and ran in my bike
and THEN back into that Stock C-5. He's QUITE happy to not only have one back in , but an improvement over the first one he had.
I installed a vortex generator called a Swarp in the intake tract of my 1978 Yamaha SR500, although it sure didn't look like that. The device seemed to increase torque a little in the mid-range and decrease power at "high" revs. It also seemed to improve throttle response slightly. So I kept it in until I sold the bike. I don't think the thing sold very well and a year after it came out I never heard about it again.
I think I know what your talking about ? Like a ring thing with with triangles sticking out into the air flow? No... this is different design. I think it would be fair to call in an airfoil. Where "angle of attack" or where it's installed in the intake is important...considering the shape of the UCE intake port and how the air fuel mixture turns down into and past the valve head. It's also like something you might see on the leading edge of wings on a plane... to help with lift I believe.
https://www.youtube.com/watch?v=6UlsArvbTeo