Thinking of a possible project... Speed on a budget. Thoughts?

[Wayne]

A customer brought in a Quickie 500 kit and it got me to thinking of building something along those lines, but for sport flying, no rules to limit the design. This would free the model up to use a thinner airfoil and smaller fuselage and a high power setup for the size.

Fuselage will be just large enough to house the motor and a 6S battery. Simple box fuselage with motor out front. Wing will be around a 50" span with single taper. Looking at an all wood construction, but maybe a foam core wing?

To this end I've found a nice motor candidate from T-motor that should push the model up to around 150 mph range give or take. (calcs show upward of 180 on the flat but we all know that is a pipe dream) This setup would be about 1400 watts and the motor weighs 3 ounces, 6S battery around 18 ounces or so. All temps in the yellow. Prop will have 15 inches of pitch.(click image to make larger)

Any interest in something like this? Be a different sort of project for me, think it would be fun.

 

[Doc James Hammond]

Low or mid-winger. I'd go for the mid wing - not many out there and they look great. U/C? I wouldnt bother. Hand launch and skid landings.

Maybe a short kit:

Simple but nice mass produced (Cheap) epoxy glass fuse? Constant chord or slightly tapered foam wings maybe 7.5 to 8%? Balsa stab?

Lots of room for personalization?

My two-pence worth.

Doc.

 

[Wayne]

Thinking a One piece shoulder wing that bolts down. I debated the idea of a plug in wing, but keeping the wood wing strong makes a bolt on wing the safer approach.

The goal is a pretty simple plane to build that has some very spicy performance. Mario suggested some possible airfoils.. Getting the itch to move forward, but need to close out some other projects first.

 

[Doc James Hammond]

If its going to be powered the aerofoil can be 7.5 or even less as long as its reinforced. Thats going to make a big difference to the speed.

(Plastic) Bolt on and pin locator, one-peice shoulder wing is perfect. Glass fuse maybe and a balsa tailplane.

Maybe something like the present F1 racer fuselage side and wing planform profiles? Thier job is exactly what you want: To go as fast as possible and still do good turns.

I like this idea - not sure why but I like it...

Doc