Centuri Argus KB-9 Dimensions

[CPMcGraw]

Does anyone have tube lengths and diameters for this kit? The scans currently on the web don't have a parts list.

I'm guessing on these diameters:

Lower body -- ST-13 (A given, since we're using the Eliminator fin can...)
Mid body -- ST-8 (Looks too small to be the ST-10, but too large to be ST-7)
Upper body -- ST-7

Thanks...

[Tau Zero]

Lower body -- ST-13 (A given, since we're using the Eliminator fin can...)
Mid body -- ST-8 (Looks too small to be the ST-10, but too large to be ST-7)
Upper body -- ST-7Craig,

Back in the day, I had a Centuri Argus, so I can confirm your body tube diameters first-hand. That's because I know for a *fact* that the Argus used the PSR-78 and 813 plastic reducers (as well as what we *now* call the Eliminator fin can).

So, courtesy of Ray Dunakin III, who sent me some Centuri PNC-89's, as well as an apparently oddball BNC-50-something or other (Honest John?)... You'll see the aforementioned reducers pictured below with a PNC-71, *and* the real, live, *ORIGINAL* ST-7 from an *ACTUAL* Centuri Argus.

BTW, the ST-7 is 7" long. The ST-13 looks much longer than a typical ST-138 (8" long), maybe 10"? And the ST-8 might be something like 5"... But that's just guessing from the picture on this link at JimZ:

http://www.dars.org/jimz/cen5309.htm


That's the best I can do. :eek: ;) :cool:


Cheers,

--Jay

[CPMcGraw]

...I know for a *fact* that the Argus used the PSR-78 and 813 plastic reducers (as well as what we *now* call the Eliminator fin can)...

Can you get me the lengths of those plastic parts? Carl's balsa equivalents are 0.875" for the BR-78 reducer, 1.7" for the BR-813 reducer, and 1" for the BC-710 nose cone, but he has alternates of slightly shorter and slightly longer lengths...

...the ST-7 is 7" long. The ST-13 looks much longer than a typical ST-138 (8" long), maybe 10"? And the ST-8 might be something like 5"...

Carl has an ST-855 tube, which is 5.5" long. Can you measure that tube length and see if it is exactly 5", or 5.5"?

Here's my point: The catalog says 28.5" for the length. Using Carl's stock components --

BC-710...........1.000"
ST-770...........7.000"
BR-78............0.875"
ST-855...........5.500"
BR-813...........1.700"
ST-13130........13.000"

...I come up with a length of 29.075", which is bloody close! We're talking about a difference of just over 0.5", and not enough for me to really worry about except for trying to match the original as closely as possible.

Carl has the BR-813P, which is only 1.500" long, and this would reduce the length to 28.875"...

I could live with this amount of discrepancy, since we know that not all catalog lengths were 100% accurate. Maybe this will help others wanting to build the Argus, too...

[Tau Zero]

Can you get me the lengths of those plastic parts? Carl's balsa equivalents are 0.875" for the BR-78 reducer, 1.7" for the BR-813 reducer, and 1" for the BC-710 nose cone, [snip] Carl has the BR-813P, which is only 1.500" longCraig,

The specific parts you'll want are the BC-710, BR-78, and the BR-813P, since those parts exactly correspond to their counterparts' measurements. (I told Carl that his 1.7" BR-813 was *not* the same length as a PSR-813! :eek: :rolleyes: ;) )


Carl has an ST-855 tube, which is 5.5" long. Can you measure that tube length and see if it is exactly 5", or 5.5"?What you see is what I got. (chuckling) I ain't got no ST-8 -- I was just eyeballing the picture from JimZ!


Here's my point: The catalog says 28.5" for the length. Using Carl's stock components --

BC-710...........1.000"
ST-770...........7.000"
BR-78............0.875"
ST-850...........5.00" (*not* stock! :rolleyes: )
BR-813P...........1.500"
ST-13130........13.000"

...[Craig] come[s] up with a length of 29.075", which is bloody close!While Jay's approximation totals 28.375". Is *that* close enough for government work? ;)


I could live with this amount of discrepancy, since we know that not all catalog lengths were 100% accurate. Maybe this will help others wanting to build the Argus, too...Well, there ya go...


Cheers,

--Jay

[A Fish Named Wallyum]

I've got a bunch of parts collected for this project, right down to the inkjet decals I made in 2002.
All I have to do is find them......... :confused:

[leepic]

Craig,

The specific parts you'll want are the BC-710, BR-78, and the BR-813P, since those parts exactly correspond to their counterparts' measurements. (I told Carl that his 1.7" BR-813 was *not* the same length as a PSR-813! :eek: :rolleyes: ;) )


What you see is what I got. (chuckling) I ain't got no ST-8 -- I was just eyeballing the picture from JimZ!


While Jay's approximation totals 28.375". Is *that* close enough for government work? ;)


Well, there ya go...


Cheers,

--Jay

Hi guys! This is my first post! :)
I'm in the process of finishing an Argus clone (I have an original I built in 1976 that still flies), and I know this is an old post, but my two are the exact same and here's what I used:
BC-710...........1.000"
ST-770...........7.000"
BR-78............0.875"
ST-855...........5.500"
BR-813P...........1.500"
ST-13120........12.000"
I had to sand the BR-813P balsa reducer some to get the taper to match the original plastic one.
I used the fin kit from the Estes Eliminator.
10" chute for nose cone, 12" for main body.
Got all my parts from Semroc...
-lee

[CPMcGraw]

I've got a bunch of parts collected for this project, right down to the inkjet decals I made in 2002.
All I have to do is find them......... :confused:

So, after three years, five months, and two weeks (but who's counting... :p ) did you ever find them? :D

[CPMcGraw]

Hi guys! This is my first post! :)
I'm in the process of finishing an Argus clone (I have an original I built in 1976 that still flies), and I know this is an old post, but my two are the exact same and here's what I used:
BC-710...........1.000"
ST-770...........7.000"
BR-78............0.875"
ST-855...........5.500"
BR-813P...........1.500"
ST-13120........12.000"
I had to sand the BR-813P balsa reducer some to get the taper to match the original plastic one.
I used the fin kit from the Estes Eliminator.
10" chute for nose cone, 12" for main body.
Got all my parts from Semroc...
-lee

Welcome, Lee!

You made a good bump for this thread. Thanks! Looks like I need to get back to some kit-bashing and build one, now that I've got a pair of those fin cans on the shelf.

[leepic]

Welcome, Lee!

You made a good bump for this thread. Thanks! Looks like I need to get back to some kit-bashing and build one, now that I've got a pair of those fin cans on the shelf.

Anyone else out there have an Argus clone?
-lee

[A Fish Named Wallyum]

So, after three years, five months, and two weeks (but who's counting... :p ) did you ever find them? :D

Not as such, but until I saw my post, I was going to reply all over again. :chuckle:

[leepic]

I asked Gordy to put together an Argus decal set, which is now available at Excelsior. Looking forward to dressing it up...