Brodak 2004 Rules Question

I just took a look at the schedule for the Brodak Fly-In and I have a question:

The Profile event states, "Profile stunt models only, side mounted engines only, 3/4" fuselage maximum thickness." Do they really mean that? The thickness part - I get the rest.

Taken literally, that means that my Brodak Cardinal, Brodak Pathfinder, and Fancher Twisters would not be allowed in the event. Their nose triplers make them too thick to fit through a 3/4 inch template.

Or do they mean it like "regular" profile rules: 3/4 inch max thickness aft of the 25-percent root chord mark?

Que, pasa? I could use Judge Judy's opinion on this.

Thanks,

Ron King

I believe it has to do with the fuselage thickness, itself, and not the nose section. Since there are profiles using built up and sheeted construction these days, the intent of the rule is to limit the thickness of the fuselage portion, itself so that people do not begin to make them wider and wider. You could certainly add fillets or braces at the wing or tail junctions, also, but at some future date someone is going to have to add to the rule limiting the size of said fillets or we will soon see fillets with a 3 inch radius and extending from the wing to the stabilizer. (Uh, oh, I may have started something.)

Maybe that's the one of the problems with a legal background: I've always considered the nose doublers, triplers, etc. as part of the fuselage.

This is such a blanket statement it stopped me in my tracks and had me scrambling for a ruler. I hope it's just an incomplete sentence.

Ron King

Ron,

They are talking about the portion of the fuselage from the TE of the wing to the end. Many profile planes have nose doublers, some of which extend to the TE of the wing and since the base fuselage wood is 1/2" thick, then they would exceed the magic 1/2" rule. Even the plain old Twister has 1/8" ply nose doublers which makes the fuselage 3/4" wide in the nose section! Mine on the other hand has an extra 1/16" ply and 1/4" tripler on the inboard side. A lot of planes flying at Brodak's last year were configured similarly so I'm pretty sure that the nose section at least to mid wing isn't included, and probably to the trailing edge of the wing as well!

I suspect this is derived from the AMA definition of profile, CL General #10, page 31.

Measurement is taken at the high point of the wing! SIMPLE

Scott(it not that hard to fly it's keeping the dam thing airborne) Riese

Ron...

Your Cardinal is not legal. Mine is. For a small fee, I'll fix it so's yours is.

In case you don't know it, I carry a lot of weight at the Brodak fly in. Five days or so of my own lard #####, and on Saturday I carry extra weight in the form of fried chicken ##### (DD size - I swear) over to a table occupied by people unfortunate enough to have left an empty seat.

As to measuring your unit... I don't want to know anymore.

As I understand it, you'll have at least one airplane for every event being flown. You're not going to have any silly questions like this about the ARF event, are you?

Just curious.

Just one: I have a Brodak Oriental that is Almost Ready to Fly. In fact, it's been that way for quite a while. Can you get me into the ARF event?

I could claim that it's been an ARC since last summer

Ron King