how to find

[lawrence]

how do you find the size of a part bt63 in estes Saturn 1 :confused:

[mikeyd]

Go to Ninfingers site.

http://www.ninfinger.org/rockets/rockets.html
http://www.ninfinger.org/rockets/body_tubes.html

[mikemech]

BT-63 ID 41.6306mm 1.639" OD 42.6974mm 1.681" Wall .5334mm 0.021"

[mojo1986]

Best solution is to try to get a copy of the Estes 1974 Parts Catalog.

[rocketguy101]

Best solution is to try to get a copy of the Estes 1974 Parts Catalog.
is this the same publication?
http://www.oldrocketplans.com/pubs/Estes/Estes_Custom_Model_Rocket_Parts_Catalog.pdf

[ghrocketman]

Yes, that is the same publication.

[Jerry Irvine]

It looks like it slides over a BT-60 (Estes)

[lawrence]

thank you all for your help, when you look at the old prices don't you wish for a wormhole :chuckle:

[ghrocketman]

Old prices of that 1974 catalog, yes; Old WAGES of 1974...dunno; the average middle class family with ONE full-time bread-winner had MORE purchasing power then. If wages actually kept up with productivity improvements and inflation, that should be possible now....reasons why not are numerous. The largest one is this supposed GloBULLization.

[dlazarus6660]

Minimum wage in 1974 was $1.80 an hour. I was making $2.00 an hour working 20 hours a week. Four hours a day for 5 days with week ends off. I could buy a lot of rockets back then and I did. Often I would save my money till the end of the month and buy out the store of rockets.

[Royatl]

here is one source: http://www.ninfinger.org/rockets/body_tubes.html

Yep, BT-63 was the "core" tube for the eight BT-51 "tank" tubes in the Estes Saturn IB.

Since it slip-fitted over BT-60, it was used in the K-36 Saturn V kit as part of the removable engine mount, that allowed using either a 3-18mm motor cluster, or a single 24mm motor.

[Doug Sams]

here is one source: http://www.ninfinger.org/rockets/body_tubes.html

Yep, BT-63 was the "core" tube for the eight BT-51 "tank" tubes in the Estes Saturn IB.

Since it slip-fitted over BT-60, it was used in the K-36 Saturn V kit as part of the removable engine mount, that allowed using either a 3-18mm motor cluster, or a single 24mm motor.This helps legitimize the BT-63 and the 3x18mm mount of the SatV, in my mind. That is, the 3x18, shrouded with the BT-60 tube, always struck me as being over-engineered, not to mention incompatible with pretty much any other rocket.

But, since the BT-63 already had another function, it makes the 3x18 design make a bit more sense.

Still, if anyone wanted to build a 3x18 mount to use in multiple rockets, forgoing the BT-60 shroud is a must. That way, the mount will install in any BT-60, a far more common tube.

Doug

.

[stefanj]

I've made an interchangeable 3 x 18mm mount where the motor mount tube fit into notches in a BT-60 coupler. The coupler, which is just 1" or so long, sits ahead of the motor mount tubes.

The same model can also handle 1 x 24mm and 1 x 29mm.

[mikeyd]

This helps legitimize the BT-63 and the 3x18mm mount of the SatV, in my mind. That is, the 3x18, shrouded with the BT-60 tube, always struck me as being over-engineered, not to mention incompatible with pretty much any other rocket.

But, since the BT-63 already had another function, it makes the 3x18 design make a bit more sense.

Still, if anyone wanted to build a 3x18 mount to use in multiple rockets, forgoing the BT-60 shroud is a must. That way, the mount will install in any BT-60, a far more common tube.

Doug

.


I was always under the impression, this was done, to get the Saturn V to market, as Estes did not have the D13-3 ready yet, but it was planned. I even thought the earliest Saturn V kits did not include the "D engine Adapter". But this is all just from memory, so I have no proof, or first hand knowledge. By the time I got my original K-36, the D13's were available, but even now I still like to fly it on 3 C6-3's occasionally. First available in the 1969 catalog.
http://www.ninfinger.org/rockets/nostalgia/69est024.html, only lists C6-3 for engines.

[Royatl]

I was always under the impression, this was done, to get the Saturn V to market, as Estes did not have the D13-3 ready yet, but it was planned. I even thought the earliest Saturn V kits did not include the "D engine Adapter". But this is all just from memory, so I have no proof, or first hand knowledge. By the time I got my original K-36, the D13's were available, but even now I still like to fly it on 3 C6-3's occasionally. First available in the 1969 catalog.
http://www.ninfinger.org/rockets/nostalgia/69est024.html, only lists C6-3 for engines.


You are correct. I was one of the first to receive a K-36 Saturn V (in August or September '69), and it did not have a D mount, as the motor would not be introduced for three or four more months.

[ghrocketman]

As with most anything that needs a C6-3, the K-36 Saturn V flies a lot better on a cluster of C5-3's than on C6-3's if you can find old stock for use at a non-sanctioned launch.
That engine should have NEVER been discontinued just like the B14/B8 series.

[carbons4]

The super C's were good motors.