kullas
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HaHa after posting this i noticed that i put it in the MPR any way i can get it moved to the HPR section
NO! You will only be able to fly you rocket on "G" motors now!...
HaHa after posting this i noticed that i put it in the MPR any way i can get it moved to the HPR section
I measured 1/4" on the fin from the tube and a 1/4" up the tube from the fin. Is that enough or do i need to make it a little bigger?it may be an illusion but those fillets look TINY!!
Ben
it may be an illusion but those fillets look TINY!!
I think it's just the scale of things - those fins are pretty big.
I have always loved this design. Maybe when I'm done with school I will pick up a kit! I am thinking more along the lines of all FG tubing, FG fins and a 76mm hole...
I think your fillets are fine as long as you had good contact when gluing the roots to their respective tubes.
The biggest i have ever used
there is no way to get fillets in side but i did apply some epoxy to the inside tube and then coted the root edge with epoxy and slid into place. after 12 hours of drying i gave them a bend test this morning and they felt solid
this evening i plan on adding all the fillets and wrapping up the loose ends and start getting it ready for paint
Have you already epoxied the rear centering ring in place? If not, DON'T! You can run some epoxy down the inside and on each side of the fins and make fillets. Use a long stick or something to smooth it out. Or you can FOAM the inside of the fin can.
If you have already epoxied the rear CR, then nevermind. Although you could still drill a hole in the rear CR and squirt some foam in there.
Don't worry about the internal fillets, you don't need them.
there is no way to get fillets in side but i did apply some epoxy to the inside tube and then coted the root edge with epoxy and slid into place. after 12 hours of drying i gave them a bend test this morning and they felt solid
Correct. Foam is not needed either. It is a 4" rocket with a 38mm mount, not an L3 bird. If that stuff was needed, it would specifically be covered in the assembly manual. You could also use titebond wood glue instead of epoxy for a lighter build. Avoid the urge to overbuild and you'll get much better performance out of 38mm motors.
Looking good so far!
Mike Fisher
Binder Design
https://binderdesign.com
So far i have stuck with the instructions and everything have came out so far.
Im done with the fillets and now im going to get it ready for paint. I do have one question. The shock cord connects to the CR and up to the ebay then from the ebay to the nosecone. How do i connect the ebay to the upper section by glue or some other way?
Here is a shot of the motor mount. I held off to install it until i went to the hardware store to get some Tnuts for the motor retention
Here is a pic of the Tnuts after I got them installed
Pantherjon-Could you explain the need for the 1/4" spacing? I've never heard of that.
So How do i connect the ebay to the upper section by glue or some other way?
I mean no disrespect. I was thinking that that would have been covered in the instructions if necessary. Just my experience has taught me that stock is not enough, but that's just me.
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