Quantcast

Josh's 29mm Big Daddy

The Rocketry Forum

Help Support The Rocketry Forum:

joshismycaptain

Active Member
Joined
Oct 24, 2016
Messages
39
Reaction score
0
Plan change,,, no longer building this...

I'm buying a Big Daddy kit today. The reason is to replicate the kit with an 8" concrete form tube (see my other thread). As long as I will have the Big Daddy kit and a 29mm motor tube with retainer I'm not using out of my Argent kit, it only makes sense to make a 29mm Big Daddy. :p
 
Last edited:

BDB

Absent Minded Professor
Joined
Aug 22, 2015
Messages
2,140
Reaction score
392
I'm buying a Big Daddy kit today. The reason is to replicate the kit with an 8" concrete form tube (see my other thread). As long as I will have the Big Daddy kit and a 29mm motor tube with retainer I'm not using out of my Argent kit, it only makes sense to make a 29mm Big Daddy. :p
Go for it! I love to fly my daughter's 29 mm Big Daddy with DMS F and G motors. You may want to pick up a Jolly Logic chute release too. This is the perfect set up for it.

P3121683_ORF copy.jpg

Two more things....be sure to add 4-5 oz of nose weight for stability purposes, and seriously consider modifying the nosecone shoulder, like several of us have discussed here and here to prevent the dreaded, but all too common, BD lawn dart.

ImageUploadedByRocketry Forum1457901653.624697.jpg
 
Last edited:

rstaff3

Oddroc-eteer
Joined
Jan 18, 2009
Messages
11,765
Reaction score
13
+1 on the Chute Release. My 29mm Daddy is pretty much stock except for the motor tube and the nose mods, which are pretty much what BDB showed. With the stock balsa fins, using an oversized chute that opens at 200' is perfect! An undersized chute means you'll probably have to fix a fin post flight. Your field conditions may vary.
 

K'Tesh

OpenRocket Chuck Norris
TRF Supporter
Joined
Mar 27, 2013
Messages
14,407
Reaction score
1,010
Just in case you haven't read my reply to your earlier thread... Many here modify the nosecone of their Big Daddy rockets to reduce the likelihood of a lawndart.
 

rstaff3

Oddroc-eteer
Joined
Jan 18, 2009
Messages
11,765
Reaction score
13
That's probably less of an issue with a 29mm ejection charge but a 29mm Daddy begs for more weight and more internal space too as the motors are longer.
 

BDB

Absent Minded Professor
Joined
Aug 22, 2015
Messages
2,140
Reaction score
392
I should say that I papered the stock fins too. Made them pretty strong. Though I still dinged the leading edge of one fun when it fell off my workbench this week. :facepalm:
 
Last edited:

rstaff3

Oddroc-eteer
Joined
Jan 18, 2009
Messages
11,765
Reaction score
13
Actually, I may have pspered mine too. I would have to go look. Pre chute release I tried a ginormous streamer...bad idea with balsa.
 

joshismycaptain

Active Member
Joined
Oct 24, 2016
Messages
39
Reaction score
0
Chute release, larger chute, weight in nose, modified nose cone. Got it! Thanks!

I did have a stock Big Daddy back in the day which I had no issues with. I ended up giving it away to someone I met at a launch who had no rocket (a serious problem). It was probably one of my favorite rockets to launch!
 

rstaff3

Oddroc-eteer
Joined
Jan 18, 2009
Messages
11,765
Reaction score
13
I had many flight on mine with no problem until one fateful day they mine lawn darted right after another one did. Someone offered that the snugness of the cone is a factor. If the nose is on the tight side, it tends to come off more energetically and hence there isn't time for the charge to vent before deployment. Still, I'd follow K'Tesh's advice even on otherwise stock builds. Easy to do and you get more room inside anyway.
 

joshismycaptain

Active Member
Joined
Oct 24, 2016
Messages
39
Reaction score
0
Change of plans. Just got back from Hub Hobby in Little Canada, MN. Instead of buying the Big Daddy kit I bought a 54mm heavy duty tube and an ogive nose to fit it and some 29/54 motor mounts... Scratching the 29mm BD plan...
 

Nantucketdink

Well-Known Member
Joined
Oct 1, 2014
Messages
63
Reaction score
1
My stock Big Daddy floated out into the oblivion of the Atlantic ocean this week after just its second flight. So sad. It screamed off the pad on a composite F44-4 and whistled the whole way up. Pretty impressive. Once I saw the parachute open up way way up there I knew I was gonna be in trouble. Oh well. I highly recommend those F44s for this rocket, but a bigger field is definitely in order.
 

K'Tesh

OpenRocket Chuck Norris
TRF Supporter
Joined
Mar 27, 2013
Messages
14,407
Reaction score
1,010
My stock Big Daddy floated out into the oblivion of the Atlantic ocean this week after just its second flight. So sad. It screamed off the pad on a composite F44-4 and whistled the whole way up. Pretty impressive. Once I saw the parachute open up way way up there I knew I was gonna be in trouble. Oh well. I highly recommend those F44s for this rocket, but a bigger field is definitely in order.
Welcome to the Goldfish Club! Sorry you had to lose the rocket to do it.
 

rstaff3

Oddroc-eteer
Joined
Jan 18, 2009
Messages
11,765
Reaction score
13
My stock Big Daddy floated out into the oblivion of the Atlantic ocean this week after just its second flight. So sad. It screamed off the pad on a composite F44-4 and whistled the whole way up. Pretty impressive. Once I saw the parachute open up way way up there I knew I was gonna be in trouble. Oh well. I highly recommend those F44s for this rocket, but a bigger field is definitely in order.
Sorry about your loss. Sounds like you had plenty of field but unfortunately is wasn't the dry kind.
 

joshismycaptain

Active Member
Joined
Oct 24, 2016
Messages
39
Reaction score
0
My stock Big Daddy floated out into the oblivion of the Atlantic ocean this week after just its second flight. So sad. It screamed off the pad on a composite F44-4 and whistled the whole way up. Pretty impressive. Once I saw the parachute open up way way up there I knew I was gonna be in trouble. Oh well. I highly recommend those F44s for this rocket, but a bigger field is definitely in order.
Ahhhh. I believe that would be a land breeze... :(
 

JimJarvis50

Well-Known Member
Joined
Jan 18, 2009
Messages
2,433
Reaction score
669
I have (had?) a couple of slightly enhanced Big Daddy's. Both have most of the original parts (tube, fins & cone), but with some reinforcements. One has a 29mm mount. It flew maybe 50 times on a couple of H motors, but mainly F and G motors. Unfortunately, it's sitting in a tree somewhere, but it was always fun to fly it. The other has a 54mm mount and flies on 2-grain J motors. The most recent flight was an I210 red, which was very nice. That flight was with a chute release, but the chute release got smacked in some manner and was lost. I suspect the weighted nose cone did that deed. I'll probably try that again, as it's the only practical way to do the flight.

Jim

Big Daddy Pair.JPG
 

joshismycaptain

Active Member
Joined
Oct 24, 2016
Messages
39
Reaction score
0
I have (had?) a couple of slightly enhanced Big Daddy's. Both have most of the original parts (tube, fins & cone), but with some reinforcements. One has a 29mm mount. It flew maybe 50 times on a couple of H motors, but mainly F and G motors. Unfortunately, it's sitting in a tree somewhere, but it was always fun to fly it. The other has a 54mm mount and flies on 2-grain J motors. The most recent flight was an I210 red, which was very nice. That flight was with a chute release, but the chute release got smacked in some manner and was lost. I suspect the weighted nose cone did that deed. I'll probably try that again, as it's the only practical way to do the flight.

Jim
How do you get that look? Glass it and spray black?
 

JimJarvis50

Well-Known Member
Joined
Jan 18, 2009
Messages
2,433
Reaction score
669
How do you get that look? Glass it and spray black?
Both have a layer of carbon fiber over the cardboard tube. For the one on the left, the carbon piece was just epoxied into place, but no attempt was made to flatten it (commonly done by putting a layer of peel ply over the carbon). So, it has a little texture to it and is not perfectly smooth. I just clear-coated the carbon to add the shine. I used the peel ply technique on the one on the right to make the surface flatter. For whatever reason, the epoxy got a bit cloudy - happens sometimes. I would likely have tried to shine up the sanded epoxy surface using Finesse-it II, which I also used on the paint on both cones.

Jim

Edit - The fins are a layer of carbon over the original balsa, finished similarly.
 
Last edited:

TangoJuliet

Well-Known Member
Joined
Jun 26, 2016
Messages
1,239
Reaction score
7
Does anybody sell 29mm centering rings for the Big Daddy BT, or do I have to make my own? I was going to do this as a simple stock build while at work during the holiday, but I've decided I want to upgrade it to a 29mm MMT instead.
 

dhbarr

Amateur Professional
Joined
Jan 30, 2016
Messages
6,700
Reaction score
1,211
Does anybody sell 29mm centering rings for the Big Daddy BT, or do I have to make my own? I was going to do this as a simple stock build while at work during the holiday, but I've decided I want to upgrade it to a 29mm MMT instead.
It's just a 29mm/3in, lots of places have them.
 

rharshberger

Well-Known Member
Joined
Oct 13, 2014
Messages
9,703
Reaction score
1,682
Location
Pasco, WA
It's just a 29mm/3in, lots of places have them.
Does anybody sell 29mm centering rings for the Big Daddy BT, or do I have to make my own? I was going to do this as a simple stock build while at work during the holiday, but I've decided I want to upgrade it to a 29mm MMT instead.
BMS has them and probably Semroc as well.
 

Threemorewishes

Well-Known Member
Joined
Feb 23, 2009
Messages
409
Reaction score
12
You could use a 38mm mount and use a 29mm adapter for a lot more motor options.
 

dhbarr

Amateur Professional
Joined
Jan 30, 2016
Messages
6,700
Reaction score
1,211
You could use a 38mm mount and use a 29mm adapter for a lot more motor options.
Particularly being able to use the Loki no-haz loads, although that puts QUITE a bit of mass aft.
 
Last edited:

TangoJuliet

Well-Known Member
Joined
Jun 26, 2016
Messages
1,239
Reaction score
7
Upon further reflection, I think I'll just stick with the 24mm mount it comes with, but lose the thrust ring. There's plenty of AT 24mm SU options that would out-perform the Estes offerings in the MPR range.
 

jd2cylman

Still not Carl... ;-)
TRF Supporter
Joined
Jun 17, 2011
Messages
4,693
Reaction score
583
Upon further reflection, I think I'll just stick with the 24mm mount it comes with, but lose the thrust ring. There's plenty of AT 24mm SU options that would out-perform the Estes offerings in the MPR range.
And CTI once they're up and running on all cylinders again. CTI 24mm 6 grain has some fun reloads...
 

dhbarr

Amateur Professional
Joined
Jan 30, 2016
Messages
6,700
Reaction score
1,211
And CTI once they're up and running on all cylinders again. CTI 24mm 6 grain has some fun reloads...
Those are pretty long for this model though, well up inside the nose.
 

TangoJuliet

Well-Known Member
Joined
Jun 26, 2016
Messages
1,239
Reaction score
7
Yeah... That might still be a little over the top for my taste. :wink:
 

Threemorewishes

Well-Known Member
Joined
Feb 23, 2009
Messages
409
Reaction score
12
Particularly being able to use the Loki no-haz loads, although that puts QUITE a bit of mass aft.
Estes Big Daddy on a CTI 38mm 5 grain I297 Skid. Has also flown on CTI 29mm 2 and 3 grain reloads with motor adapter. A little nose weight opens a whole world of possibilities.

 

ccollier

New Member
Joined
Jun 23, 2015
Messages
4
Reaction score
0
Some ply centering rings from bms, a 29mm mount, and some BBs in the nose made this rocket my favorite flyer!

1483324478464.jpg
 
Top