#11
|
||||
|
||||
Quote:
The X-7 rocket in the Centuri Power System Outfit (see: http://forums.rocketshoppe.com/show...p?t=8784&page=3 and http://www.ninfinger.org/rockets/no...a/79cen008.html ) was essentially a Lance Corporal, and Semroc sells the fins for the X-7 http://www.erockets.biz/semroc-lase...et-sem-fce-ps7/ and the larger X-16 http://www.erockets.biz/semroc-lase...f-sem-fce-ps16/ rocket. I hope this information will be helpful.
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see: http://www.lulu.com/content/paperba...an-form/8075185 http://www.lulu.com/product/cd/what...of-2%29/6122050 http://www.lulu.com/product/cd/what...of-2%29/6126511 All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com. NAR #54895 SR |
#12
|
||||
|
||||
Quote:
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see: http://www.lulu.com/content/paperba...an-form/8075185 http://www.lulu.com/product/cd/what...of-2%29/6122050 http://www.lulu.com/product/cd/what...of-2%29/6126511 All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com. NAR #54895 SR |
#13
|
||||
|
||||
Quote:
I'm sure. The PNC-76 is very pointed and the PNC-74 is more rounded on the tip. I have boxed examples of each, aside from the PNC-74 that came with this kit. The box art of the Lance Corporal, as depicted on page one of the assembly instructions (see the first pdf attachment in my post above) is very close to the shape of PNC-74. But, the two are functionally interchangeable, if one were so inclined to do so. Earl
__________________
Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#14
|
||||
|
||||
Quote:
Quote:
Quote:
Wow! Earl, thanks so much for sharing all of your Lance Corporal documentation! However, I think maybe we have our nose cone numbers swapped. I checked both the 1972 Centuri catalog as well as the old Semroc website, and I came up with the attached document. You'd think that the bigger the number, the longer the nose cone (the way Carl McLawhorn did it) would be consistent. Hence, his BC-723, -730, and -734 catalog numbers. BC-723P – “Centuri PNC-73 Balsa equiv.” http://www.semroc.com/Store/scripts...p?idproduct=918 BC-730P – “Centuri PNC-76 Blowmold equiv.” http://www.semroc.com/Store/scripts...p?idproduct=919 BC-734P – “Centuri PNC-74 Balsa equiv.” http://www.semroc.com/Store/Scripts...?idproduct=1459 In other words, I think the longer 3.4” nose cone is PNC-74, and the rounded cone (the one on the Vector-V and Akela-1) is the PNC-76. Yeah, it's weird, I know. Further comments? Please respond! Thanks so much! .
__________________
Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
#15
|
||||
|
||||
Jay-
I was looking at this a second time myself earlier this afternoon and came to the same conclusion. And the #7 series plastic cones are the only ones that don't follow the convention. On pretty much all the other Centuri plastic cone series, the longest of the series is generally the 'higest' numbered and is also the 'most pointed' of the series. BUT, on the #7 series this is not the case. So, the Lance Corporal did have the more rounded cone, but in this case it is the 76 as you stated and not the 74. Yeah, it is a bit confusing. Earl
__________________
Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#16
|
||||
|
||||
Earl,
Given our nose cone consensus, I think I can post the following parts list for Bill "Vanel" Cooke. ** Centuri Lance Corporal 1.00X e-rockets SEMROC Parts List SEM-BC-730 Nose cone 3.00” L SEM-ST-790 Body tube – 9.00” L SEM-ST-730 Body tube (2) – 3.00” L SEM-BTC-7 Tube connector (bulkhead) SEM-HTC-7B Tube Connector (staging coupler) SEM-TB-7 Thrust ring (2) SEM-SE-10 Screw eye SEM-SP-224 Streamer SEM-LL-120 Launch lug – 2.00” L SEM-EC-136 Elastic shock cord – 36.00” L (trim if needed) SEM-FCE-KD11 Laser-cut fin set – 3/32” T ** Bill, you'll have to decide how you're going to attach the shock cord to the body tube. I'm pretty leery of the skinny 100# Kevlar cord that Carl included with his kits. I usually use 1000# (add another zero to 100 ) Kevlar cord, which means I attach it to an EM-710 mount inside an ST-10 tube. I whipped up a 1.37X ST-10 upscale version of the Lance Corporal back in July 2011, in case you're interested in taking a look: http://forums.rocketshoppe.com/showthread.php?t=9657 . .
__________________
Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
#17
|
||||
|
||||
Quote:
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see: http://www.lulu.com/content/paperba...an-form/8075185 http://www.lulu.com/product/cd/what...of-2%29/6122050 http://www.lulu.com/product/cd/what...of-2%29/6126511 All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com. NAR #54895 SR |
#18
|
||||
|
||||
Here (attached--please see below) is a photograph of a Centuri Lance Corporal, on page 182 of the fifth edition of G. Harry Stine's "Handbook of Model Rocketry" (it is in several editions, including the current [seventh] edition, in the chapter, "Multistaged Model Rockets"). The Lance Corporal's nose cone is a long, pointed-tipped PNC-74. Also:
We could all be right concerning which nose cone (PNC-76 or PNC-74) could/can be found in the Lance Corporal kit (and even in the Lancer, Sky Devil, and X-7 [in the Power System Outfit] model rocket kits). Unlike in the older Estes kit instructions, the specific nose cone types weren't listed in most--if not all--of the Centuri kit instructions. Now, because of this: It would not be surprising if Centuri nose cone types were swapped out for similar ones if, say, they were temporarily (or permanently, if it was near the end of a kit's final production run, and/or near the end of the company) out of the "intended" ones for certain kits. Since the PNC-74 and PNC-76 could be used interchangeably, I wouldn't be surprised if they were occasionally swapped for each other (even the Lance Corporal shown in Stine's Handbook might have had the long, pointed-tipped PNC-74 due to this). The scan of the picture in the book is below:
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see: http://www.lulu.com/content/paperba...an-form/8075185 http://www.lulu.com/product/cd/what...of-2%29/6122050 http://www.lulu.com/product/cd/what...of-2%29/6126511 All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com. NAR #54895 SR Last edited by blackshire : 01-15-2019 at 03:55 AM. |
#19
|
||||
|
||||
Quote:
Thanks for the book photo scan...I recall that image now. It can sometimes be hard to know with some of these older kits which was THE originally intended part and/or which part was included in the kit in MOST instances. I have a couple of each of the similar (but single stage Lancer) and a couple of the Lance Corporals, and each of them feature the shorter, more rounded PNC-76. It gets even a little more confusing sometimes lookng at catalog photos of other Centuri kits. When introduced in the 1972 Centuri catalog, the photos of the Excaliber kit showed it definatley with the more pointy PNC-74 cone. However, I have several of these in unopened form and NONE of them contain that cone, including a definate first year edition of the kit. They all contain the more rounded PNC-76 cone, which I don't think really looks right for that rocket. So, when I built one of those kits 5-6 years ago, I pulled one of my pointed PNC-74 cones out of my vintage parts stash to use in the build. So, it certainly can be hard to know at times which part may have been used to kit a particular model, even in the face of catalog photos. Intersting to investigate though. Earl
__________________
Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#20
|
||||
|
||||
Quote:
Looking at the catalog illustration of the Mini-Dactyl (see: http://www.ninfinger.org/rockets/no...a/73cen00c.html ), I was certain that it used the PNC-54 nose cone (see: http://www.ninfinger.org/rockets/no...a/73cen060.html ), the same one that was used in the Star Trooper kit (Estes' 4:1 tangent ogive BT-5 nose cone, used in their Gnome kit, is virtually identical). But to my surprise, the Mini-Dactyl used a balsa nose cone that--if I recall the thread about it correctly--was *only* used in that kit (it *may* have been the BC-50 http://www.ninfinger.org/rockets/no...a/73cen060.html ). I ordered a few duplicate Mini-Dactyl balsa nose cones from Semroc a few years ago, and they looked almost nothing like the nose cone in the Mini-Dactyl catalog illustration.
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see: http://www.lulu.com/content/paperba...an-form/8075185 http://www.lulu.com/product/cd/what...of-2%29/6122050 http://www.lulu.com/product/cd/what...of-2%29/6126511 All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com. NAR #54895 SR |
Thread Tools | Search this Thread |
Display Modes | |
|
|