I.D. of HBT-1090?

[Vanel]

Anybody have a read on the inner diameter of the Estes HBT-1090 body tube? I know that the O.D. is 1.09".

[Rocketking]

Just took calipers to a piece, and it's reading as 1.044, which means a wall thickness of .023".

This piece IS the 'shiny' silver coated tubing from 'E's 'make-it-take-it' kits. Don't know if it is unique or typical of the rest of their fleet... Where's that "Heatseeker"...

Good luck!

Glen A.
NAR 26298 L1

[Vanel]

Thanks Glen!

Just took calipers to a piece, and it's reading as 1.044, which means a wall thickness of .023".

Good luck!

Glen A.
NAR 26298 L1

[Bob Thomas]

This tube looks like a sleeve fit over an ST-10. What was it used on? Are the tubes available? I only ask because I have some old 1090 cones.

[stefanj]

It was the tube for several "E2X" kits. The Bandit and so on.

I started building an almost-minimum-diameter two-stager with 1090 tubes. Never got around to cutting fins and such.

It was designed to use up my ancient F44-0 motors. And maybe my remaining F101-15. Obviously it would be fiberglassed.

[ghrocketman]

F44-0 ???
Who made that one ?....never heard of it !
I assume it is a non-FSI BP booster motor of some sort.

[stefanj]

F44-0 ???
Who made that one ?....never heard of it !
I assume it is a non-FSI BP booster motor of some sort.

One of the early (1988) Aerotech composite boosters. 24mm. Don't know the total impulse.

They actually have a very short delay and no ejection charge. You're supposed to stick a piece of thermalite into a hole up top and up into the sustainer nozzle.

I'll fly these privately, since they're probably out of certification, if they were ever in in the first place.

[snaquin]

One of the early (1988) Aerotech composite boosters. 24mm. Don't know the total impulse.

They actually have a very short delay and no ejection charge. You're supposed to stick a piece of thermalite into a hole up top and up into the sustainer nozzle.

I'll fly these privately, since they're probably out of certification, if they were ever in in the first place.

Not sure if you still have this so I attached the AeroTech "Non-Std Class C" insert that was packaged with the F44's back in the day. Burn time of 1.8 sec with 79.8ns Tot. impulse so you got a nice full F motor in a small 24mm diameter package. I think they were certified until 12/99.

Your F101's are on the attached sheet too. I think I have thrust curves for both in an old TRA TMT book. I can scan both for you if you want them to view or build RockSim motor files from the data.

Awesome motors ..... :)

.

[dgrayson]

The 1090 is also part of the Xarconian Cruiser made by Estes. The kit comes with two that are used to make the intakes and pods. The instructions for this one are pretty poor so if anyone has an extra tube, I could use it.

[Green Dragon]

If anyone comes up with a source for the 1090 tubes, please post - as I have a few of those cones myself - would make for good Delta Clipper clones :)

As for the F44-0... nice motors, I recall Chuck Mund flying his Achilles rack rocket here in NY on F44-0 boost, to 4 more D12's above = BYE BYE.

We set the US E payload altitude record on a pair of the old D7 motors, direct staged, minimukm dia... forget the exact altitude without looking it up... that's one I'd love to see rereleased, great contest motors.

fly high .

~ AL