SMR
Entropy Demonstrator
- Joined
- May 15, 2009
- Messages
- 2,134
- Reaction score
- 171
Very professional looking skin work. Did you invest in a few hundred really small clekos?
I never knew something called a cleko was available until you posted it.
Not a commonly stocked hardware store item. My dad built an aluminum-skinned kit plane some 30-odd years ago. Bet he had a thousand of them. Your faux riveting looks great... very keen attention to detail. The weathered look is a nice finish also.
I sanded down some ASM parts that were soaked with thin CA. I started with the I.D. of the motor tube.
QUOTE]
Why or how, you maybe asking yourself, would soaking the I.D. of the motor tube with thin CA be worth the time and effort?
Because it will promote fire resistance within the motor tube.
To have a fire, three elements are required. Heat, air and fuel. Remove one of these elements and there will be no fire.
The ejection charge supplys the heat.
The tube is full of air.
The cardboard tube is the fuel.
Soaking the I.D. of the motor tube puts a barrier between the inside of the motor tube (fuel), the ejection charge (heat) and the space (air) in the tube.
In other words, the heat and air can't get to the fuel.
Fire proof? No.
Fire resistant? Yes.
The inside of the tube was sanded smooth so ejection residue can be easily swabed out.
This method could also be used in Low Power Rocketry. Soak the inside of the airframe with thin CA where the ejection blast fries the tube.
That's my theory and I'm stick'n to it.
How's that for a answer jimmy, eh?
And I do now use Q-tips to apply CA...who would have thought ?
Cheers
Paul T
You are a tenacious one aren`t you ! Are you sanding those buggers by hand ?
That`s the thing with rockets with that many fins......sandsandsandsandsandsandsandsandsandsandsandsandsandsandsandsandsandsandsandsand...............
Looks good though and it`s something you just can`t leave out.
paul
Hmmmmm ,perfect bevels everytime.................nice.
Paulo
Third and last fin set beveled. Thank God. My finger tips hurt after making fifty six bevels on basswood.
sodmeister
Senior Member Join Date: 1st August 2009
Location: Winnipeg ,Manitoba.CANADA
Posts: 594
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You are a tenacious one aren`t you ! Are you sanding those buggers by hand ?
That`s the thing with rockets with that many fins......sandsandsandsandsandsandsandsandsandsand sandsandsandsandsandsandsandsandsandsand.......... .....
Looks good though and it`s something you just can`t leave out.
paul
Hmmm... the number keeps growing, by the time he finishes it will be more like "yea, and I had to bevel like 200 fins..."
You have to agree....working with Basswood is a joy ,my favorite to work with ,plywood a close second.
Paull
Er... Ah... OK, if I have to agree, then I agree.
Thank you for seeing it my way! How do you plan on sealing the fins, anything special ?
Paolo El Magnifico
Special? No, just Elmers Wood filler and thin CA.
Changed your name?
Room for positive motor retention is really tight. Looks like I'll need a manufactured retainer instead of making my own.
Any suggestions?
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