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I've been starting a winter time boat project in cad, was curious if anyone ever tried a tunnel design with a further rearward aerodynamic center? By moving the lift back would it be less sensitive to blowovers? The AOA of the foil at approximate plane is just 3 to 4 degrees, as well as a...

I've been starting a winter time boat project in cad, was curious if anyone ever tried a tunnel design with a further rearward aerodynamic center? By moving the lift back would it be less sensitive to blowovers? The AOA of the foil at approximate plane is just 3 to 4 degrees, as well as a...

Does anyone know what the purpose of those inside rectangular notches(on stringers) found on most f1 tunnels sponsons are for? here's some pics: http://www.philippe-dessertenne.com/item_i...2005%2003:25:22 Are these some sort of inner water deflection/strake? I also note a forward stepped...

does anyone know if a flatter bottom ride surface (closer to a rigger) affects stability, or turning response? Is there somewhat of a tradeoff of speed for stability?

Has anybody ever tried an adjustable canard wing on a tunnel hull? I've seen and used them on Hydros- sometimes even servo adjustable. I remember seeing an article in RCBM about using fixed outlaw sprint wings with good results once.

Was curious as to what the popular tunnel racing classes are. I'm looking to build a tunnel this winter and possibly race next season, do many race .67 mod tunnels? Or would it be better to build a .40 mod?

does anyone know of the science behind step designs on the front of hydro and rigger sponsons? I've seen numerous variations and was just curious if there is a known purpose, or if it's just more of a black art.

Was surfing and stumbled upon these giant 1/3 scale hydros: http://www.hydroplanesunlimited.com/ Has anyone ever built or seen anything this big before? Words like Yahoo!! come to mind. How about a new class hehe

Here's some pics of my latest creation, Custom Cad designed, It is powered by a CMB 1.00, been guesstimated to run +80mph. Whaddya think?

Here's some pics of my latest creation, Custom Cad designed, It is powered by a CMB 1.00, been guesstimated to run +80mph