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Thunder Power RC . Mikado Modellhubschrauber . GrandRC

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Thunder Tiger Raptors 30-90 - Imperio > use thin CA to glue wood blades
 
 
justme
Senior Heliman
Location: israel

after posting a massage here about which glue to use when doing the so called "wood blades mod" to the stock raptor wood blades i chose to use thin CA and i think it is the best one to use (the thinnest - the better).
and the reason is that when i applied the thin ca to the wood surface the glue seeped into the wood itself for about 3 cm from the root and it actually seeped into the wood itself.
The reason it happened is because it was THIN CA and if I had used epoxy it wouldnt seep through the wood.
For my understanding the reason for making this step it to strengthen the blade root and ONLy thin CA would do it, being thin (duhh... ).
so please feel free to correct me if im wrong (and ill trash the woodies and buy me a carbon pair ).
BTW i sealed the plastic grips with epoxy in the edges for better grip but thats the only place ive used epoxy

Assaf
04-08-2002 Over year old.
 
 
RaptorHelius
Senior Heliman
Location: Regina, Saskatchewan, Canada

I used thin CA on my mine too, I noticed the same thing.

Take Care
04-08-2002 Over year old.
 
 
deckerv
Veteran
Location: Wellsville, NY

I did too.. I wonder if they were more worried about the plastic to wood bond?? Like I said.. .I did too.. so if there's a major prob.. I guess I'll just go strictly carbon then
04-08-2002 Over year old.
HOMEPAGE  
 
 
justme
Senior Heliman
Location: israel

well...

after all the only thing keeping the blade in place is the 4mm bolt and well.. u cant glue that one
so i think the important thing is to strengthen the root and second is keeping the plastic grips in place (i asume that if the wood will decide to seperate from the plastic grip it wont be those 10 drops of epoxy that would stop it )
and i guess the thin ca plus the epoxy on the edges will do the work better than just epoxy.
but then again its just me so feel fre to correct me.

Assaf
04-08-2002 Over year old.
 
 
Dyehard
Veteran
Location: Cedar Bluff, Va.

The whole idea is to glue the intire surface of the plastic blade grip to the wood. If that is glued properly, there is more shear strength there than there ever is in the wood itself. Medium thickness CA does a great job there, it is what most people have used on 60 size blades for years and what Miniature recommends on their wood blades. A wooden 60 blade has twice the mass that a thirty size does and probably four times the force pulling on it at a given head speed.
04-09-2002 Over year old.
 
 
justme
Senior Heliman
Location: israel

The whole idea is to glue the intire surface of the plastic blade grip to the wood. I

just think about that...
if there isnt enough strength in the wood itself then nothing will help u to prevent the blade from comming loose.
Because it doesnt metter how much glue ull put on the grips if enough force will be putted on the blade it will finally find where to come loose and if the wood is glued to the plastic grip strong enough but the blade root isnt strengthen enough the wood itself will break and the glued grip wont help it... (i think that a large amount of glue isnt stronger than the 4MM screw and two little screws that holds the blade and the grips together).
04-18-2002 Over year old.
 
 
Doug
Elite Veteran
Location: Naples Florida....

I think the use of thin CA is valid try drilling a hole in a thin piece of wood and bolt it to another and pull it apart. The bolt hole will "shear" out by causing the wood fibers to "slide" apart. Do the same thing but "coat" the bolt hole with thin CA and try to pull it apart. the effort to pull it apart will be more than doubled. This is because the CA adds strength between the fibers and you must pull the fibers apart in tension.
04-18-2002 Over year old.
 
 
Lift
Elite Veteran
Location: Houston, TX

Gluing Blade Roots

The thin CA helps. But, remember that there is a plastic insert molded to the roots that goes into the hole in the blades. The bolt itself never touches the wood becuse of this channel. What does touch the wood is the surface of the grips. It is this surface contact that makes all the difference. If you scuff the underside of the grips with sandpaper and then epoxy the grips on it will hold VERY well.

In order to throw a blade from an epoxied root it would have to tear the entire surface of the blade off everywhere the roots are adhered.

Do both. But DO NOT fly these things without glueing them.

//Payton
04-18-2002 Over year old.
 
 
Ted-s
Senior Heliman
Location: upstate SC

Yes it will work fine
04-18-2002 Over year old.
 
 
rsilvers
Senior Heliman
Location: Marshfield, MA

I first soak in thin CA to make the wood stronger, then I use thick CA or epoxy to glue the plastic to the wood. Basically, I think epoxy is best but use thick CA cause I am lazy and don't like mixing epoxy.
04-18-2002 Over year old.
HOMEPAGE  
 
 
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Thunder Tiger Raptors 30-90 - Imperio > use thin CA to glue wood blades
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