Bought the subject rocket at Hobby Lobby on clearance and am now building. But I want to put Kevlar in it instead of the
regular tri-fold attachment method. All I have is Kevlar thread, normally suitable for much smaller rockets. What size
Kevlar should I get for this one? Or is the thread good enough? I do plan on putting a baffle in if I have one that's big enough.


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Dale Marshall, San Antonio Texas
NAR #90990
Semroc SAM #083

BAR Since 2008
Enjoying model rocketry since 1977.
The Spotted Dragon
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all you really need is a 'spacer'/leader to keep the elastic up away from the heat...build a baffle into the tube coupler (a 3-plate (2/3rds moon plates of 1/16 ply) should work and you can use the bits you trim off to reinforce the top plate). I've been using stainless steel fishing leaders for 'mid-power' birds, but 1/8"(2.5mm) Kevlar would work. you want the join between the leader and elastic to be just below the end of the tube to reduce your chances of 'zippering' the tube. HTH
Rex

I used 500 lb kevlar on all of my Pro Series II builds. If you need a piece of it, PM your mailing address to me.

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Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078

I say - use the tri-fold and the elastic. My Leviathan served as my L-1 certification bird and it has the tri-fold and elastic in it. It works fine with eight flights so far on SU Estes/Aerotech motors and CTI reloads from F to baby H.

But Jeff's offer is generous one....and worth taking up.

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Bernard Cawley
NAR 89040 L1 - Life Member
SAM 0061
AMA 42160
KG7AIE

I agree with BEC that Jeffyjeep's offer is very generous. I managed to pick up an Estes Nike Smoke and installed a #600 pound kevlar line. I cut a slot in the side of the upper centering ring and tied the kevlar around the motor tune, threading it through the hole. Will tie or install some sort of buffer where the kevlar exits the body tube to prevent a zipper and use the provided Estes elastic to increase the length of the recovery line.

The trifold will work, but I prefer using the kevlar myself. I don't imagine flying the NS on anything more than a G, but I look at it being more safe than sorry.

Chas

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Charles Russell, MSgt,USAF (ret.)
NAR 9790, Lvl 1
SAM "Balls Three"

I use 100# Kevlar on everything up through Estes PS2 and similar size (MPR). No problems yet. Well, a few zippers, my fault.

Mike

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Clear skies and fair winds,
Mike

NAR 31689