Folks often revise the aerodynamic moments of the vast Streak family. Adding nose and tail moments. What effects have you observed? Presently I've a Brodak Streak kit, an ARF Flite Streak and a jr. Streak kit. Planning to assemble/build these in the next few weeks. My thought is to put a honking 40 on the ARF Streak, using the ARF wing and tail surfaces plus a new cut solid 1/2" balsa fues. The Brodak Streak will probably be built light with an FP25 or 20 stuck up front. The 40 powered plane will need more nose moment to allow a 3.75 ounce chicken hopper, my thought is to add some extra tail moment as well. So. How have folks done this common experiment? Your subjective/objective results? On the jr Streak I plane to mount magnum 15 with a tongue. That one may get a bladder. Any thoughts about that? One of my happiest knock about planes of the moment is an FP15 jr. Streak with a tongue and a 2 ounce chicken hopper. Lotsa fun. So. Why mess with success. Because. You know. What the heck. The magnum 15 on bladder might be more fun (or a pain in the A.)

Leave the nose length the same and put the tank on the inside?

Anyone mess with the Streak airfoil? No doubt a key element in George's magic formulation. The Gieseke Nobler foil, however, IS preferred by many over the stock Aldrich shoe.

I have built several Streaks from Pat King's plans.  He is in the profiles if you want a set of his excellent plans.  I think they are pretty true to the original airplane.  I have powered them with Foxes (about as light an engine as there is) and built the tail feathers from 3/16 instead of 1/8.  Don't taper the rear of the fuselage at all and the CG's on mine have come out right on the money.  Yep, you do have to build a special tank if you want a very long run, or experiment with an inboard tank.  Some very knowledgeable people have used inboard tanks with great results, Dirty Dan comes to mind. These are very fun airplanes flown fast or slow.  

Pat's Streak plans come in many sizes and shapes. The big one has a Veco 45, the little one isn't a Pat King plan that I know of.

I built the Bipe Streak and flew it until the top wing came off after numerous flights.  It had to fly fast to keep from falling out of the sky.  It was a fun plane and plan on building another.  Lengthening the nose on the Original Top Flite Flite Streak would be more in line with what George Aldrich told me one time.  He was still upset that Top Flite shortened the fuselage.  The Flite Streak got me thru inverted and 8's.

Now how about some details on that inboard tank? 

Yes, I heard that story about GA fearing the bad harmonics in the nose. Which is why he cut the nose back 1". Profiles are terrible voodoo children when it come to bad vibes. The  fues I'm making for my ARF streak is covered and in the process of sanding out. I put the inch back in the nose, hope it's not a fatal flaw. Since I am not looking for a stunt run, but plan on running the Tower 40 at max rpm, I think it'll work. The nose is reinforced the usual ways. Also added two inches or so to the tail moment. I hope to fly the bird this weekend. If... Sorry to say it doesn't really look like a Flite Streak anymore. Too bad.