Cwbullet’s First Build of 2021: Partial printed 29mm Minimum Diameter

[cwbullet]

Rivet in place:


I will use a flatter on for the flight.

 

[cwbullet]

Retainer:



It was printed with Prusament PETG Urban Grey.

 

[cwbullet]

Attached to the motor tube with JB Weld:


I will finish gluing the fin can on and motor tube with a 5-minute epoxy. The shock cord will be also glued to the side of the motor mount.

 

[cwbullet]

Fin Can Complete! Enough for today.

 

[cwbullet]

I hope we have a launch this month so I can fly it. Come on people of SC. Please avoid COVID!

 

[Hobie1dog]

I hope we have a launch this month so I can fly it. Come on people of SC. Please avoid COVID!

Being on a sod farm, don't you all fly year round? ROCC stops in May when the crops go in?

 

[thzero]

Nice... I've only done a few test print to check sizes, etc. And spent a bunch of time not getting threaded pieces to thread together.

And we're off:

Below is a prebuild show of the parts:

View attachment 447789

 

[cwbullet]

Being on a sod farm, don't you all fly year round? ROCC stops in May when the crops go in?

We try, but we have been unable to fly due to local restrictions and concerns about group gatherings.

 

[Hobie1dog]

We try, but we have been unable to fly due to local restrictions and concerns about group gatherings.

I can't be out in weather below 60 degrees or I get bronchial spasms, so I'm going to try and get my Level 2 down in SC when it warms up. Hopefully I'll get to meet you there.

 

[cwbullet]

I try and do my COVID dance to keep it off the field and out fo the state for the next 10-14 days.

 

[cwbullet]

I do have one piece I had to order. I am out of 4-40 rods. I was going to use M3 Rods, but they are so expensive in the US.

 

[cwbullet]

Today comes the fun part of assembling and wire in the AV Bay.

 

[cwbullet]

It a little delayed and the AV Bay is wired.


I am using the Fingertech switch. I chose to go old school with a 9V.


A missile works RRC2+ is my altimeter of choice.



The AV bay is 5.5 inches long and has 4-40 rods.

I am going to use an 18-inch main chute

The rocket is nearly assembled.

 

[Nick Hutton]

Looks good. How are you getting your charge wires back past the battery/endcap interface. Looks pretty tight. Its one of the reasons I went with a lipo and bear altimeter to give me a little wiggle room inside a 29mm coupler.

 

[0011001100]

Here is mine with an RRC3, screw switch, and lipo shoved into a 29mm coupler. This is the CAD model but it did work and has flown. Uses 2-56 threaded rod with locknuts on the end (not in CAD as mcmaster doesn't have them long enough in the models).