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Tip launch gliders Y configuration – can someone tell me why the rudder (vertical fin) is glued to the left side of the carbon fiber tube on a right hand launched glider???
The reason I asked, I am having trouble with my glider flopping on it’s back upon release! I have two tip launch gliders of which I glued the rudder to the right side of the boom and was wondering (curious)_if this could be a cause of some of my problems!!??
The side force imparted at launch would push the fin against the carbon shaft instead of trying to tear it away if the fin were on the other side. ??
@rscottdanner wrote:
The reason I asked, I am having trouble with my glider flopping on it’s back upon release! I have two tip launch gliders of which I glued the rudder to the right side of the boom and was wondering (curious)_if this could be a cause of some of my problems!!??
I don’t think fin location would cause that much problem.
How quickly is it on it’s back? Like, right out of hand or just too loopy and upside-down 80 feet up?The glider flops over on its back immediately after release….
First thing… is the hold down for the fuselage/DT real tight?
I mean, tight enough that you cannot grab the pod and the boom and make them budge?
If it’s tight I must guess that that you have a CG problem with too much incidence.
But I’m thinking the fuselage joint is giving.I very very much appreciate the help and advice.. I’ve found the fuselage and DT system is very tight.. – I believe my throwing technique is poorly executed!! Depending on how I hold onto the wingtip I can now get the glider in the air with a short glide time – the more power I try to add during the launch the greater chance of the glider ending up on it’s back! I also found by creating a trim tab out of the rudder I can keep the problem from occurring – problem then arises of a right hand turn that is too tight!! If its the last thing I do in my life I will learn the fine art of tip launch gliders!!
How are you gripping it?
Before I went back to the peg/blade I used fingers on top.
I like the blade better.
Are you launching level? That’s a big deal also.
Rudder tab is used to control the launch. If you’re fighting too much turn you can add weight to the outboard tip.This problem is a plague for F/F DLG gliders. In addition to all of the above is to check the angle of the “V” stab and/or simply rip it off and install a new one as sometimes that works. Too much skew? not enough?? hard to be exact. The other thing to check is the angles of the wing panels with a square. If you have the built in wash out are they equal? How about moving the CG further forward? Stiffness of the boom can be an issue but that usually won’t cause the effect you’re describing. Finally what about weight? Heavy gliders especially in the tips create lots of problems.
Good Luck!
Please understand your BODY MUST LEAD YOUR ARM, not the other way round. So the launch should be close to level, but it will naturally start to rotate nose
up as the launch is near release. You can look up videos on Utube that show proper Tip launch technique.
Also search Hippocketaeronautics.com in the Tiplaunch glider section of subjects. You can find some instructional info, videos, commentary, especially if
you go to earlier pages of the section.
Remember what I said: release glider as your body pulls your arm into position beside you.
The NFFS Digest has had TLG “How To” articles in the past issues. I do hope you are a member…?
I suggest you contact Stan Buddenbohm. He is as good as there is TLG-wise! Go to: discUSkid.com for his brochure & email contact info.
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