Lets just say I have a Bird in mind and it Ain't an airliner!

It's a 70mm max EDF contest

though....
It does raise an issue that could pop up, and a proposed addition to the rules....

"Model must take off and complete the flight solely under the power of its 70mm EDF power system."
That'll keep the hot-air balloon ascents, helicopter drops, rocket boost, tow planes, etc out of our hair. Not even a separate prop power system to ascend for that first diving pass.

If you toss, winch, bungee, drop, rocket, or any other devised method of getting in the air we keep it simple.

I like the idea of unlimited rules and launch method I don't feel should be a limit.

Originally Posted by demondriver

Lets just say I have a Bird in mind and it Ain't an airliner!

Chris, you and I seriously need to talk about this. I've got some very "interesting" ideas.

I say if you use a tow plane and you rocket assist and you dont break 200 you win the moron award lol

Originally Posted by LuvEvolution7

Chris, you and I seriously need to talk about this. I've got some very "interesting" ideas.

Well Rich I'm keeping my design for this 70mm bullitt "Top-Secret" for now Lol, but I will be building two. I've come up with a formula that should go well over 200 Miles per hour only question is will I be able to fly her visually or have to go FVP?

So the rules are No rockets, No air or drop launch, And she must take-off & land under the power of electric 70mm fans only, . . . .O.K. and away I go Drawing up plans tonight on "Project-Superbird" Meep-Meep!

I'm telling you Chris, we really need to talk.

Originally Posted by imyohero

I say if you use a tow plane and you rocket assist and you dont break 200 you win the moron award lol

I agree. The thought just came into my mind once we started tossing rockets around. Rocket plus EDF for propulsion should seem like an obvious breach of the contest, but someone claiming the rocket is just JATO isn't quite so far fetched.

Rise off ground, bungee, and hand launch are common methods. I was just thinking out of the box, trying to put my mind in the place of someone looking for a "sneaky" way to do it.

I guess my own statement of "Model must take off and complete the flight solely under the power of its 70mm EDF power system" wasn't well thought out, as it technically knocks out hand launch and bungee launch...

Just to give the non-readers something to look at.... Here`s a basic side view of my 35mm. If you print it out and enlarge it so that the fan housing area is about 78mm (large enough to hold a 70mm fan) it should be large enough to hold what you need to go 70mm.

I`m actually working on a fuselage that`s a little slicker for my 70mm, but the basic layout of fan and flying surfaces won`t change much.

Tom, darpa is missing a hypersonic drone..... Told the Fbi today I dont know you!!!

Originally Posted by Knife Liddle

Just to give the non-readers something to look at.... Here`s a basic side view of my 35mm. If you print it out and enlarge it so that the fan housing area is about 78mm (large enough to hold a 70mm fan) it should be large enough to hold what you need to go 70mm.

I`m actually working on a fuselage that`s a little slicker for my 70mm, but the basic layout of fan and flying surfaces won`t change much.

Very Nice design sir!

The only addition to the rules would be a technical one stating the guidelines mirror the AMA flight rules of no pyrotechnics/rockets or sparklers!
Bungee? Heres one for you all! So an older guy is helping a younger fellow with a 40mm F-18, he's got the bungee stretched out to about 50lbs of tension and lets go. The little jet probably did 200 mph for 20 feet then disintegrated! Watch you bungee tension!

New question to the masses: Would you all be opposed to allowing Twin 70mm to the Speed Chalange? We all know the difference and at the same time who cares? Its about going past 200 mph! A single fan would have just as many bragging rights and recognition as a twin fan, while the challanges are totally different electrically and wing loading.
Keep em comming!

This still seems to be the best way to capture flights with a hat cam, there is no relying on others for the duty!

Originally Posted by demondriver

So the rules are No rockets, No air or drop launch, And she must take-off & land under the power of electric 70mm "fans" only, . . . .O.K. and away I go Drawing up plans tonight on "Project-Superbird" Meep-Meep!

So, I noticed the word "fans"! Are two "fans" in line not a twin?

two fans in line means the power of one fan. in fact, that should be allowed, because it would actually be considered to be a detriment on many levels. I say go for it. LOL.