Need a Tomahawk body tube HBT-1800

I'm rebuilding a darted D Region Tomahawk:

Pretty sure I will never find another nosecone without buying the kit, but does anyone know where I can find the Estes body tube listed for it?

bt reference: 2037 D-Region Tomahawk (Apx 1) 030367 HBT-1800 (2) 11.625”

The shoulder on the N/C measures 1.715" to 1.735" (slightly out of round)
the ID of the BT is about 1.75" and OD is 1.8"
I will also need a coupler and an olgive nosecone. If anyone has any ideas where I can get this stuff, please post up.
BMS and Semroc don't have a listing that matches these dimensions.

Wayco said:

I'm rebuilding a darted D Region Tomahawk:

Pretty sure I will never find another nosecone without buying the kit, but does anyone know where I can find the Estes body tube listed for it?

bt reference: 2037 D-Region Tomahawk (Apx 1) 030367 HBT-1800 (2) 11.625”

The shoulder on the N/C measures 1.715" to 1.735" (slightly out of round)
the ID of the BT is about 1.75" and OD is 1.8"
I will also need a coupler and an olgive nosecone. If anyone has any ideas where I can get this stuff, please post up.
BMS and Semroc don't have a listing that matches these dimensions.

Click to expand...

Semroc has a tube that is really close to the dimentions you've posted. The Series 18 tube has an O.D. of 1.840 in and an I.D. of 1.800 in.

They also have the type of cone you want, BC-1856. The BC stands for 'balsa cone', the 18 is for 'series 18' and the 56 represents 5.6 inches. The cone is approx. a 3:1 ratio.

I am asuming you'll be using a 24mm motor mount, so you'll need series 9 to series 18 centering rings. The I.D. of the series 9 tube is the same diameter as a BT-50, but the tube wall is thicker with an O.D. of.998 in.

You already have the fins to copy or use again.

The series 18 tube seems expensive to me at $1.39 per inch.

Have you considerd down scaling to BT-60 or up scaling to BT-70 or BT-80? Couplers, centering rings and 3:1 cones are available in all these sizes.

The point can be rounded off if you prefer.

I would recheck the ID OD and wall thickness. It could be that Estes has rounded off the diameter to 1.8" The SEMROC Series 175 tubing might be what they are using.

Wayne,

Balsa Machining has what you are looking for. Use the 34" full length Aerotach 1.8 coupler. C188-34 (1.796x1.728x34 inch long T188 coupler stock at $7.00.

Guy

GuySmith said:

Wayne,

Balsa Machining has what you are looking for. Use the 34" full length Aerotach 1.8 coupler. C188-34 (1.796x1.728x34 inch long T188 coupler stock at $7.00.

Guy

Click to expand...

That coupler is brown cardboard, with a "fuzzy" surface finish and nasty open spiral seam. It's not a white tube with a smooth glassiene outer wrap layer like regular body tubes use. It would require a lot of filling and special care in finishing to come out looking good.

I looked at this problem a few months back, simply to find a longer version of the tube to avoid the joint in the middle when the two short tubes in the kit are glued together. Could not find an alternative.

The tube is 1.8" , because it is a 1/5 scale model of a rocket with a 9" diameter body.