Techniques > How to...
Glider wing mod and reinforcement
Happy Days:
I note that you are reading from an old review (2007) and I’m thinking that the model you have now might have been modified (improved) since then.
Looking at the set up you have, I can’t imagine that wooden wing joiner snapping in flight. I suspect what was more likely to have happened is that either the wing joiner, (in the right hand wing) or the wing joiner socket, (in the left hand wing) became un-glued and allowed the wing to “Butterfly” in a tight turn or when coming out of a steep dive.
Provided the existing wing joiner in your model is glued in properly I’d have thought it would be strong enough.
Whilst I take your point of wanting to “solve the problem before it becomes a problem :clap: ” I think I’d be inclined to fly it as it is. After all, it’s likely to be a little while before you’re pulling high G‘s.
May be some other forum members would have some thoughts on this matter.
K.
skyhawk newbie:
Here a few photos of what I'm planing to do...
Replace the foam ailerons with some balsa one's I've made
they'll be stronger as I wana fit servos for each aileron,
fit a thin (1mm)alloy plate where the black plastic one was...
Apoxy 2 hollow 4mm carbon fiber rod's front and rear of the servos..
As for the fuse...
Replace the thin metal push rods ( that bend javascript:emoticon(':cry:') ) with some Gold-n-Rod,These will prevent tail pushrods from bending. When the pushrod bends, it does not break, but it stops controlling.
Will allso add a wire guide positioned midway between the fuse pushrod slots and the tail.....
What do you think ?????
Not bad for a newbie....
:lol:
skyhawk newbie:
Anybody......
I'm not gona do anything to the wing
untill I get a go ahead....
yeah you could do that or
No don't do it......
I've all ready wrecked one wing ,
by doing my own DIY mod :oops: ...
and not asking enough questions first :!:
So now I'm down to
3x fuse and 2x wings off a TW-742 SkyHawk...
Sean
skyhawk newbie:
Quote from RC Groups.com about the TW-742 SkyHawk.....
I actually have a little experience with these. My dad bought one and I put it together, trimmed out and test flew it for a bit before handing it over to him. I actually thought it went pretty well for a cheapy. Not fast, and didn't climb ridiculously fast but was quite ok. flew for about 12-14 min in still air with supplied NiMh battery and a couple of 25+ min thermal flights in not particularly strong lift. I was happy enough with it that I got one for a friend who wanted a cheap intro into RC gliding. He's had a blast with it, and it's proved a lot tougher than you'd imagine. We haven't DS'ed it yet.
The first mods you should do are make a better wing joiner (ply is good) and glue the halves together, reinforce the TE where the rubber bands go (to save the foam) a bit of thin plastic or something will do. A few strips of BiDi TESA tape on the bottom of the wing and around the LE (cover the BiDi with coloured tape to keep UV at bay) Replace all the servos with HXT500/900, the originals are embarrasing. Ditch the center aileron servo and fit a seperate servo for each aileron. Make sure the pushrod ends are fitted properly. It'll fly fine with just the center servo but seperate ones are a lot nicer. About 45 min work so far
See how it goes, then think about upgrading the power system.
It slope soars just fine. I don't think you'll be too disappointed for the money it cost you.
Good luck,
simon... "Quote"
What is BiDi TESA..Can you get it in Ireland ??
Sean
Happy Days:
Joining the wing halves to form a single wing piece sounds a good idea. Replacing the servos also seems advisable, most RTF models have cheap twitchy servos supplied.
I’d stick with a single aileron servo, as fitting two has no advantage that I can see and only adds weight and complexity. :evil:
Keep an eye on the models’ All Up Weight, (AUW) Sean. The more weight, ….the harder to fly the model will become. I believe 600grms is the designed AUW for your plane.
You will also need a supply of rubber bands for the wing…………they are always breaking.
Afraid I’ve never heard of BiDi Tesa, :?: I suspect it could be a type of fibre reinforcing tape………..but I’m not sure.
Good Luck,
Keith
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version