Gettin tired of same heading. Anybody got any info on SNIPER?? I have one framed up from an old plan. It is for a Fox .15.BB Schneurle, Foam wings, I cut. Still need finish and carrier controls. Curious how critical the design paramenters are on this as far as the rules go??

Gettin tired of same heading. Anybody got any info on SNIPER?? I have one framed up from an old plan. It is for a Fox .15.BB Schneurle, Foam wings, I cut. Still need finish and carrier controls. Curious how critical the design paramenters are on this as far as the rules go??

If it has a .15 engine, if it uses no moveable controls except elevator and throttle, if you can fly it on .52 foot lines, it's legal anywhere.  Rules for .15 Carrier are local rules, although NCS keeps a copy of the original Denver rules, there are no "official" rules.  But most everyone follows the Denver rules which are:

Rules are AMA Profile Carrier rules, except:
1. .15 max displacement
2. Elevator, throttle and deployable tail hook are the only
   allowed moveable controls
3. No scale points awarded. No minimum wing area.
4. Lines are 52' - 52'6", .012 braided or .010 solid
5. Timing is for 8 laps (equal 1/2 mile)
6. High speed over 70 mph will be credited as 70 mph
    (ie: there is a 70 mph speed limit for scoring purposes.
         No penalty for exceeding 70, but no credit either)

That's pretty much it.

David,

Here's a link to some pictures of my Sniper. I converted it to electric but that's just the motor, the rest is the same. Maybe it will help you out.

http://good-times.webshots.com/album/558463249GjpkDE

My recommendations are to make the fuselage very sturdy, they tend to break right behind the wing. Make sure the tail feathers are really solid, they break off when it flips over on landing in grass. I made mine out laminated with 1/32 ply on one side.   I added about 1/2" to the elevator for better control in low speed.

If you have any questions that I might be able to answer just drop an email or post here on stunthanger.

Bob

David,

See how it flies and then if you need to you can make adjustments. I added the extra elevator by just adding a 1/2 or 5/8 tab on the back of the existing control surface. You'll find that to get it to hang you need to use a lot of up elevator, a little extra seemed to be good for me.

Don't know about the Fox performance. On my glow 15 I use a Cox Conquest and a 7X4 prop. It doesn't always get me to 70 mph. I'm not a very good engine guy so I could probably improve it some. The three line system does add a lot of drag.

I put the BC on the inboard wing mounted on a plywood piece that goes through the fuse and is large on the outboard side, just for security (pull test on 15 carrier is only 25 pounds).

Good luck. Post some pictures when you get it done and report on your progress.

Bob