What Can I do with These 29 mm Body Tubes

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BABAR

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I have a few in my inventory. 12 inches long. No nose cone I have fits. Suggestions?
Motor mounts fo 29 mm motors?
Tube fins (or ring fins for 13mm tubes.)

consider oblique cuts for unique rings.


See post 4
 

brockrwood

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I would just give them to someone who needs them. I don’t think I will build any F or G powered rockets anytime soon. I would give them to a good home (as long as my shipping costs are reimbursed).
 

RobertH3

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I've flown my L Aug twice. Only issue with her is lack of body tube space. This causes a shotgun parachute ejection due to the min dia tube and E/F black powder motors. On one launch the screw eye pulled out of the nose cone. Strongly suggest a hardwood dowel or "biscuit" be installed in the cone to anchor the screw eye, and maybe a thicker Kevlar cord.

Also if you scratchbuild you may want to add a couple inches of length to make prep easier.
It 'literally' screams on takeoff. Tamiya Bright Orange looks lots better than the Rusto "Real" Orange I used.

Cheers / Robert
 

manixFan

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I have a similar situation so I print nosecones and fin cans on my 3D printer. The nosecones include the shoulder so basically all I have to do is slide the fin can on with some glue to build the rocket, other than for recovery retention. (For cardboard tubes I use a beefed up version of the Estes folded paper and for fiberglass tubes I drill two holes and use a metal rod through the rocket). If you don't have a 3D printer, maybe find a local flyer with one and work out a trade or just donate them. I basically consider them expendable in the sense if I don't get it back it has cost me very little in time or money.


Tony
 

brockrwood

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I have a similar situation so I print nosecones and fin cans on my 3D printer.
I need to get a 3D printer. Everybody in my hobbies (electronics and model rockets) uses them to make cool custom parts. If it is that useful and provides that much enjoyment, it is worth the money. I have spent similar amounts of money on much dumber expenditures.
 

BABAR

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RobertH3

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Mine is a "Semroc Large Series" or SLS Lil Augie made to 'Chad-stage' an E16-0/E16-8 or F15-0/F15-8. The "F's" are to lose it : )

Cheers / Robert



35653216421_db0c5d772e_o.png
 

mtnmanak

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How about a 29mm minimum diameter rocket? I had some 29mm parts on hand, made a 29mm minimum diameter dual deploy rocket with them. Easy enough to cut your own fins.

PXL_20210419_120252920.jpg
 

brockrwood

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How about a 29mm minimum diameter rocket? I had some 29mm parts on hand, made a 29mm minimum diameter dual deploy rocket with them. Easy enough to cut your own fins.

View attachment 468647
Yep. Fins. Motor mount. No problem. Nose cone? I have no 29 mm nose. I guess I could add a custom transition to make a “payload bay” tube that then has the right size tube for a nose cone I do own. But making your own transitions is a pain.
 

brockrwood

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Yep. Fins. Motor mount. No problem. Nose cone? I have no 29 mm nose. I guess I could add a custom transition to make a “payload bay” tube that then has the right size tube for a nose cone I do own. But making your own transitions is a pain.
Or just make a simple 29 mm conical nose out of paper.
 

mtnmanak

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What kind of tubes are they? What is the ID and OD? Apogee has all kinds of nosecones for 29mm tubes:


eRockets has hundreds of nosecones:


PML as well:

 

teepot

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I've used half of a round fillable ornament that is 1", fits perfectly I have used bigger ones too..
 

brockrwood

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What kind of tubes are they? What is the ID and OD? Apogee has all kinds of nosecones for 29mm tubes:
The outside diameter, measured with the digital caliper, is 29.93 mm. Almost 30 mm. In inches, that is 1.1783465 inches.

The wall thickness, measured with the digital caliper, is .49 mm. In inches, that is .01929 inches.

So the inside diameter is 29.93 mm - .49 mm, or 29.44 mm. That is 1.1590551 in inches.

caliper_on_body_tube.jpg
 

brockrwood

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I think these are Apogee 29 mm normal wall body tubes. It is 13 inches long, which is the length Tim sells these in.

Apogee Rockets 29 mm tube

Tim says in the body copy at the website that the tubes are 2.99 cm (29.9 mm) outside diameter. That is almost exactly what I measured.
 

brockrwood

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Look what I found when I did a thorough search of my model rocket parts bin! A 29 mm nose cone! Now I am in business.

Sheesh. I just need to look through my parts bin a little harder. Doh!

IMG_5010.jpeg
 

BABAR

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Can I just make the "sustainer" body tube longer? Of course, then it would not be a Li'l Augie, but still...

The Augie II seems a little simpler to build. I may start with that.

Augie II at JimZ

View attachment 468604

View attachment 468605
Try to keep pad weight (rocket, both motors, wadding, recovery) below max lift off weight for the booster motor. Estes C6-0 is I believe max option for 18 mm booster (although many are pleading for a C5-0 to come out soon.) To my knowledge there are no composite zero delay boosters which can stage a sustainer without electronics. You COULD chad stage a 24 mm D12 to an 18 mm sustained, you would need nose weight to bring CG back to normal. Swing test might be useful.
 
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