I was looking through my collection of old DOM plans and found one called the 2 stage PeeWee. When I took a closer look, it listed a BT-3 for the body. The data I found ofr that tube from Fliskits and from Semroc give an ID of 0.349. A BT-5 (13mm motor) has an ID of 0.515.

Question: are these the same BT-3 tubes mentioned in the Estes DOM plan?

If so, what did they fly on since a 13mm would not fit?

Thanks,

__________________
John A. Lee O.S.L.
Alamo Rocketeers NAR Section 661
NAR 87285, L1 8 March 2008
TRA 03040, L1 8 March 2008
Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/

I used to tell Mom, "...I want to fly rockets when I grow up!"

She said, "Make up your mind, you can't do both!"

No, not the same at all. Take a look at the 1962 Estes catalog, pages 3 & 4. In 1963 or 64 the designations were changed.

BT-1 = 13 3/4" long, ID = 0.765", OD = 0.825" (wall thickness 0.030")
BT-3 = 9 1/4" long, ID = 0.725", OD = 0.765" (wall thickness 0.020")

Estes did not have 13mm motors at this time.

(BTW -- Love the tagline... )

__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
BARCLONE Blogsite -- http://barclone.wordpress.com
BARCLONE Forum -- BARCLONE Forum

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SAM 0044
AMA 352635

So would that correspond best to the Semroc BT30 tube currently listed?

I'm guessing that I would just need to give the motor an extra wrap of tape.

Thanks,

__________________
John A. Lee O.S.L.
Alamo Rocketeers NAR Section 661
NAR 87285, L1 8 March 2008
TRA 03040, L1 8 March 2008
Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/

I used to tell Mom, "...I want to fly rockets when I grow up!"

She said, "Make up your mind, you can't do both!"

That's the closest match, being the same ID but slightly larger OD (0.002"). The 62 catalog says these were "ivory-colored tubes", and I think another discussion said they might have been hand-wound and parallel-wrapped.

Additional information to overload your brain cells...

The BT-2 tube had the same diameters as BT-1, but had a different length (shorter, I think). The 62 catalog suggests this to be the case, as it offered PNC-1 and PNC-2 nose cones together with the BT-1 tube. The BNC-1A nose cone fit the BT-1 tube. However, the BNC-1 nose cone fit the BT-3 tube. Clear as Mississippi mud, right?

BT-3 was the original tube for the Scout...

The closest nose cone to the original BNC-2A looks to be the SEMROC BNC-30C (spherical). I think the length of 1 1/8" listed in the 62 catalog included the shoulder length.

__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
BARCLONE Blogsite -- http://barclone.wordpress.com
BARCLONE Forum -- BARCLONE Forum

BARs helping BARs

SAM 0044
AMA 352635

BT-1 = Semroc/Estes BT-40 (also MMI BT-1), and Quest now has a version of it (for a limited time!) that they're using for their commemorative Aerobee-Hi kit.

BT-3 = Semroc/Estes(and other vendors) BT-30.

__________________
Roy
nar12605

Thanks for the info. I think I'll try to build this one.

__________________
John A. Lee O.S.L.
Alamo Rocketeers NAR Section 661
NAR 87285, L1 8 March 2008
TRA 03040, L1 8 March 2008
Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/

I used to tell Mom, "...I want to fly rockets when I grow up!"

She said, "Make up your mind, you can't do both!"

I just placed an order with Semroc.

I better go check the mailbox and see if its here yet.

__________________
John A. Lee O.S.L.
Alamo Rocketeers NAR Section 661
NAR 87285, L1 8 March 2008
TRA 03040, L1 8 March 2008
Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/

I used to tell Mom, "...I want to fly rockets when I grow up!"

She said, "Make up your mind, you can't do both!"