Build Thread - Loc Caliber ISP-38

Always been a fan of the Caliber ISP. Good looking work and nice paint job .

thank you all for your kind words

I am very very close to having this build complete! the AV bay is 100% done and epoxied into the payload tube.

I have filled the gap between the switch band and the payload tube and shot a few coats of primer.

I also loaded her up with all the ancillary pieces: 30' of 5/8" tubular nylon, 12 x 12 chute protector, 36" chute, full av bay with 9v, and a 38/240 case - put all that on the scale to get a near final weight - SHE IS HEAVY - 68oz to be exact

I updated the open rocket file and it shows that she will fly ok with a G138. while I do have two of these in the range box, I am thinking I will still aim for an H148 or H165 for the first flight as they are quicker off the rail.

back to the 68oz, how do you all feel about recovering that with a 36" chute? calculations put the decent at 22ft/s. kinda quick, but as the fins aren't swept it might be ok.

the current chute is an old LOC piece, nothing special. I still have a few weeks before the July 13 NOVAAR launch so I may invest in a 4' Rocketman chute.

thoughts on the upgrade? is it $50 well spent?

Theory said:

back to the 68oz, how do you all feel about recovering that with a 36" chute? calculations put the decent at 22ft/s. kinda quick, but as the fins aren't swept it might be ok.

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I'd consider a slightly larger parachute. My L1 rocket came in at 48 oz no motor (59 with), and I got a 20 ft/sec descent rate with a 42" sphera chute.

D - O - N - E spells done!

I have a spiffy Rocketman chute on the way as well as some Aerotech reloads. Maiden flight scheduled for the July 13 NOVAAR launch

That's sharp! Is that a fractal? Julia set?

mbeels said:

Is that a fractal? Julia set?

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nothing quite that fancy. the majority of the decals are the factory design re-made by Mark at StickerShock23. the decals on the fins are the also by him, the "biohazard" symbol in cut vinyl.

Very nice. Well done.

mbeels said:

I'd consider a slightly larger parachute. My L1 rocket came in at 48 oz no motor (59 with), and I got a 20 ft/sec descent rate with a 42" sphera chute.

Click to expand...

Spherachutes measures size over the top of the canopy. 42" is only about a 27" opening or about 30" equivalent LOC chute. I find the LOC chutes work well and on the Caliber, I just used the chute that came with the kit.

Absolutely perfect first flight today on an H220. Sadly I only got one in, but there will be many more in the future! Launch picture to come when I pull it off the DSLR

Not too bad for a mid H motor. There was a 5-7mph wind at launch. It leaned into the wind slightly but flew straight after. What 2.75 calibers of stability margin will do to you

Nice build! And congratulation o. A nice flight.

Picture didn’t come out all that great, but this should officially tie off the build

Congratulations Sean! Beautiful build...

You guys have an amazing launch site!

thanks Mugs!

yes it is beautiful but full of "obstacles." from trees to ponds it has it all, but hey, I would much rather fly there than nowhere. and the echo you get off the hills from the larger motors... very cool!!!

Dude....now I want one!
NICE build! Try an I211-W it is one of my favorite motors...that and the I200 too...NICE job on the build. Very sharp!
Andrew

Thank you my friend, and Yes, the 29/360 case is on my short list of things to buy. The I200 and H268 would be perfect for the NOVAAR field.

I300 or maybe a Loki I405 this fall at the big Battle Park field