'Fin & Sonic' - An NZRA L1 / L2 certification rocket - MAC Performance Rocketry: Hyper 54 - X Rated Phenolic

[spigalau]

Mail Call... despite the best efforts of USPS & NZ Post to damage her replacement tube... it's arrived in NZ !







Now we can start the re-build !

 

[OzHybrid]

Mail Call... despite the best efforts of USPS & NZ Post to damage her replacement tube... it's arrived in NZ !

View attachment 593866

View attachment 593865

View attachment 593864

Now we can start the re-build !

How much was the shipping?

 

[spigalau]

How much was the shipping?

USD$27 New York to Oregon
Additional USD$65 (inc GST) to go Oregon to New Zealand on the NZ Post Transhipping service (Youshop)

 

[spigalau]

Replacement Tube notched / keyed for AV bay.


Holes drilled for shear pins & vent holes (way further down) - now masked off for painting.

 

[Glasspack]

Retention of Payload tube to AV Coupler now complete.

2 x Torx T20 screws locating in to embedded nuts on the inside of the airframe.
Nut's retained with ' Selleys Knead It' - an easy to use epoxy (refer: https://www.selleys.co.nz/products/adhesives/minor-repairs/selleys-knead-it-multipurpose/) .

Front side:
View attachment 572498

Back Side:
View attachment 572499

And with the Torx T20 in place, no OCD person can ever complain about the screws not being aligned to the air frame.
View attachment 572504

We then moved on to the keying of the booster & payload tubes.

Hole's drilled & cleaned before pegging.
View attachment 572500

Post Pegging:
View attachment 572501


View attachment 572502
The pegs will need to be sanded back / shaped down, so added a 2.5) to the list to do below.

Now that it's been keyed - we can drill the shear pin holes (2 x M3 for Booster, 2 x M3 for Payload) and can be sure that the pins will always be in the right place.

So the mid / upper air-frame now looks like:
View attachment 572503

Next job/s are:
1) Retention of the payload tube with Torx T20 screws to coupler.
2) Keying of AV switch band to booster tube.
2.5) Sand / Shape the excess pegs from the Keying
3) Vent Holes
4) Shear Pin Holes
5) Painting (04/03/2023 - Paint Ordered)
5.5) Order Decals !
6) Electronics
7) Fin Canning
8) Motor Retainer
9) Ground Testing

I have not done that yet, my models just have a drill mark for alignment.
But I have been seeing the peg
thing used more and more.....
What did you use to make the pegs
Can you share more info and pics

 

[spigalau]

For the pegs, I have an 8mm (1/3") plastic rod that I cut in to 12mm (1/2") lengths.

I then apply heat to one end of the rod and hammer that end to make it flange/flare out.

Drill an 8mm hole in teh tube, insert the rod from the back and epoxy in place. Sand it back to finish.

 

[spigalau]

Ok, been a while since the L2 cato... she's back & ready for her next L2 attempt next month at the NZRA NLD - March 3rd.



Simming to just on 19600' on an L1360SN @ Mach 1.8
Going full send...

 

[Handeman]

Ok, been a while since the L2 cato... she's back & ready for her next L2 attempt next month at the NZRA NLD - March 3rd.

Simming to just on 19600' on an L1360SN @ Mach 1.8
Going full send...

L2 cert on a L motor! Love it!

You go girl!