fizzwater2

My Feedback: (61)

how's it fly compared to your AJ2?

sahartman21

Both the Stinger and AJ-2 take off great. The Stinger needs less rudder during take off. About 3/8" is needed for Stinger vs. about 1/2" for AJ-2.

In the air the AJ-2 and Stinger fly similar. The both track well and handle wind well.

Both models are easy to get into a smooth rhythm around the pylons. The Stinger seems to knife edge better.

As far as speed, they are both fast.

The Stinger has a thicker wing tip by percentage of the cord, but it also has a elliptical tip. Both seem to be a clean design.

I think that these two models will fly about the same speed, especially if the 9" x 6" APC is the propeller.

Both these models glide extremely well. There is a learning curve to landing these.

sahartman21

I've made several more flights on the Stinger. It flies like its 422 brothers:

1) It comes off the ground quickly in a few feet.
2) The model easily knife edges around the turns without loosing or gaining altitude.
3) After the turn you leave it on the 45 degree and line it up for the next turn. This one handles like the big boys.
4) I used an engine kill so that I would learn to dead stick in for a landing. You can use a throttle if you choose.

The kit costs $125 plus $15 shipping. Figure about $100 for other materials plus $85 for an engine.

This make a relatively low cost option to practice your Q-40 flying or start Q-40 Sport Racing.

I'd like to hear from others on this concept.

P. Johnson

My Feedback: (1)

Scott, you know where i stand on the subject. This is a sister event to 422 as 424 compares to 428. I have flown several of these with TT40's. I had a Proud Bird, and AJ and a stinger. All of them fly great with the TT40 and are cheaper to run than the faster versions.
I would like to hear from some of the others out there, especially 424 pilots that might want to give it a try.

wrstew

My Feedback: (30)

Scott- after viewing your posts from start to completion, I also ordered one from Don. Looking forward to building it, hope it looks almost as good as yours! Great job of showing the construction, what's next? You seem prolific in building these speedy aircraft and it has furthered my education immensely. Thanks for the job well done, Randy

fizzwater2

My Feedback: (61)

I'm repairing an older plane, a Tocci Nemesis from several years back. I'm not doing any "in process" pictures, but will put some pics here after it's back together, with it's TT40 in it. The tail feathers had been crunched by the back door of my old Suburban on a windy day, so it has to be re-fletched!

sahartman21

I'm going to finish building Art's Proud Birds. These are fiberglass, foam, and carbon fiber kits. I plan on powering these with 422 class engines.

If the majority of folks finish there models, there should be enough Q-40 Sport models for a race this fall.

I normally try to make Goddard and Kansas City 424 races. I might be able to make the Bloomington race.


Who are interested in an informal race at one of those areas? [8D]

This could be scheduled when the 424 racing is finished.

P. Johnson

My Feedback: (1)

I will make the Bloomington Race

sahartman21

The Stinger was flown this past weekend at Goddard (Wichita KS).

It really scoots with a 9 x 8 APC prop on the stock Thunder Tiger Pro 40.

We later changed the muffler to a Performance Specialties tuned muffler on the same engine. The prop was changed to 9 x7. This combination was even faster and I suspect that more speed could be had with some different props.

FYI - This Thunder Tiger Pro 40 and Performance Specialties (or Jett) muffler could easily make a step-up engine without spending a lot of money.

fizzwater2

My Feedback: (61)

Yep, that stinger looks good in the air! I flew my Nemesis, too - I believe it's nose heavy and I need to finish breaking in the TT, but it flew ok once I had it trimmed. I'm still flying the 9/6, slightly rich, to break in the engine, it's still pretty new.

sahartman21

The following show the installation of a Jett Q-40 engine in the Stinger.

A Jett 6 ounce tank is used and is installed in a recess in the wing.

sahartman21

Some full size Futaba servos were installed and seem to be working fine.

There is a slight weight disadvantage (2 additional ounces) compared to mini servos. The model weighed in about 4 lbs. 3 ounces.

The model flies very smooth and is a pleasure to fly.