Brief:
T' Vulcan is an old Centuri design made t' look like an alien ship. Avast, me proud beauty! I gets its unusual appearance by bein' formed from a paper shroud. It uses 18mm motors and recovers under a parachute.

When I was a kid, me favorite lookin' rockets were t' ones made from paper shrouds. Blimey! Blimey! That meant the "Bug" and t' "Vulcan". Ya scallywag! Blimey! T' "Point" was already OOP by t' time I got started in rocketry. Ya scallywag! Blimey! Unfortunately, me hearties, me clumsy fingers and impatience doomed me efforts and I never got a single one o' them to fly.

In me first incarnation as a BAR, me bucko, me hearties, I still found myself drawn t' t' "different" lookin' paper rockets. This time, matey, me bucko, Quest be me supplier instead o' Centuri. Arrr! Blimey! T' only one I got t' try was t' Space Clipper but it too never got finished. Avast, me proud beauty! Blimey! Avast! Blimey! T' pressin' needs o' family and school saw t' it that all I did that time around be lose a few Mosquitoes (I still have never seen one actually take off; they just vanish) and a LOC Onyx.

Now, I am back and one o' t' first things I tried be a Semroc Point. It worked! Then I found t' EMRR review and t' plans at JimZ for that old nemesis o' mine, me hearties, shiver me timbers, t' Centuri Vulcan. I had t' give it a go.

Construction:
T' parts list:

• BT-20
• heavy duty glossy card stock
• motor clip
• thrust ring
• 3/32" plywood
• launch lug
• nose cone
• washer
• heavy duty eye screw

  I ordered body tubes in various lengths o' size ST-8, me bucko, a nosecone, shiver me timbers, and an engine mount for 18mm engines in an ST-8 and waited for t' parts t' come in. In t' meantime, I took me "T' Point" t' a local paper supply house and asked them t' match t' shroud for me. Ahoy! They came very close. Avast! Begad! T' paper I got is just a tad heavier. I didn't want t' wait for them t' special order t' exact match. Blimey! Well, blow me down! Then t' parts came in and...

  T' previous reviewer on EMRR gave t' body tube as a Semroc ST-8. Well, blow me down! Maybe he got it t' work but I sure didn't. T' body shroud was just nay large enough t' fit around t' tube. I checked t' print settings to make sure everythin' was printin' at 100% and it all checked out. Ahoy! Somethin' be clearly wrong.

  I went back and took a closer look at t' Centuri instructions. Avast, me proud beauty! Arrr! After a while it hit me. Avast! Avast! T' body tube is minimum diameter for an 18mm engine. That means an Estes BT-20. Begad! A quick check o' t' standards revealed that an ST-8 has an outer diameter o' 0.908" while a BT-20 has an OD o' 0.736". Ahoy! When I found a scrap o' BT-20 it was just the right size. Aye aye! All t' stuff I ordered (nose cone, body tubes, matey, engine adapters, etc.) from Semroc, me hearties, who provides great and quick service, ya bilge rat, went into t' spare parts bin and t' search for t' real components began.

  T' Estes engine mount kit (303158) had t' thrust rings I wanted along with t' style o' engine hook I prefer so I purchased it figurin' t' other parts would come in handy some day. Ahoy! I bought some more BT-20 and assumed I was ready to go.

  My first step be t' take t' body shroud which had spent t' night tightly rolled and use a steel straightedge to apply creases at t' appropriate places. Ahoy! T' shroud be then cut out with a #11 X-Acto and test fitted around a long BT-20. Blimey! T' fit seemed perfect so I cleaned up t' edges o' t' shroud with some 220 grit sandpaper. Begad! I then used thick CA t' glue t' tab and prayed t' alignment was right. Avast, me proud beauty! It worked.

  After I had t' body shroud in t' rough shape o' a cone, me bucko, I creased and folded t' fins, tail, ya bilge rat, me bucko, air scoop, me hearties, and cockpit. Begad! I cut them out and affixed them t' t' body shroud with CA. It be startin' t' look like t' pictures.

  My next step be t' set t' body shroud in its tail and push t' BT through t' nose openin' until it was resting on t' table. Avast! I marked t' spot on t' BT, shiver me timbers, removed it, used a prodigious amount o' maskin' tape t' make a guide and cut the tube t' length. Well, blow me down!

  My final step for this first round o' activity was t' cut out t' paper appliqué for t' aft bulkhead and glue it t' a piece o' 3/32" plywood. Well, blow me down! I set this aside t' dry and called it a night.

  Life intruded for several days before I had a chance t' work on t' Vulcan again. Arrr! Blimey! When I finally had a few spare moments, I used a razor saw t' remove as much o' t' excess material around t' after bulkhead as possible, matey, however, I cut it a bit too close. Blimey! A hasty swipe with t' saw scratched t' appliqué, which will have t' be replaced. Before doin' that, ya bilge rat, matey, however, I wanted t' finish gettin' it t' t' right shape and size. Aye aye! Well, blow me down!

  I used #60 sandpaper t' finish gettin' it into t' rough shape and test fitted t' bulkhead into t' shroud. It was a bit tight but I knew that before. Before sandin' t' t' final outer shape, I used a 9/16" spade bit on the drill t' pierce t' central hole in t' bulkhead for t' BT. At this point, matey, me bucko, me hearties, I had t' make a choice.

  All o' t' logs I looked at report that this model has some poor flyin' characteristics. Begad! These characteristics seem t' be blamed on two separate issues. T' first is weight forward so that t' CG is sufficiently far forward o' the CP. Even after this is supposedly taken care o' though, t' problem seems t' persist in many cases and is attributed to the location o' t' launch lug in one o' t' fins, me hearties, givin' it an angled ride up t' launch rod. Ya scallywag! One suggestion on EMRR is t' place t' lug on t' body tube itself. I decided t' follow this advice and that called for a couple of modifications.

  T' aft bulkhead appliqué has a 1/8" x 1/8" notch on t' ventral "down" side in order to accommodate t' engine hook. Ahoy! I decided that I would cut an identical notch for that purpose on t' dorsal (top) side and use t' one on t' ventral side for t' launch lug. I figured it would look better on t' rod that way. Well, blow me down! T' notches were cut from t' basswood by usin' an 1/8" Dremel bit t' punch t' holes and then an X-Acto knife t' clean them up. I used a piece o' 1/8" rod t' make sure it would slide through t' gap just fine.

  Another issue was t' recovery system. Avast! Blimey! As a kid, arrr, me hearties, I liked t' shock cord sticker that Centuri used t' provide. Now, ya bilge rat, I wouldn't use one for any reason. Avast, shiver me timbers, me proud beauty! I feel much t' same way about t' Estes style tri-fold. I decided t' use Keelhaul®©™® tied t' an elastic cord fixed t' t' motor mount a la Quest. T' problem is, this is a minimum diameter BT t' begin with so thar are no centerin' rings. Ya scallywag! I had t' get t' cord into t' BT somehow and make sure it be firmly in place. Well, blow me down! I took a motor thrust rin' and cut a small notch in t' outside t' accommodate t' thickness o' t' Keelhaul®©™®. I then tied t' Keelhaul®©™® to t' rin' and used a long stick t' place a rin' o' glue deep in t' BT. Aye aye! Next, me bucko, usin' a spent motor glued t' a dowel as a pusher, arrr, I pushed t' shock cord mount as deep as I could get it. This was almost, me hearties, matey, but nay quite t' where t' top of the motor would be.

  Fashionin' t' motor mount was easy. Ahoy! A slit was cut for t' hook, a thrust rin' was glued in place just before the hook, t' hook be inserted, me hearties, and a band was glued around it.

  Gettin' t' launch lug right be anythin' but easy. I had a vision o' mountin' t' lug on t' BT just forward of the aft bulkhead and then usin' a rod t' mark where t' cut. It turns out that was nay such a good idea by itself. Ahoy! Arrr! The angle o' t' cone formed by t' shroud is such that t' rod would bind on exitin' no matter what unless t' cut in the shroud be taken all t' way t' t' forward tip o' t' BT. Ya scallywag! Blimey! So I cut t' shroud all t' way t' t' forward tip o' the BT. Begad! It still was nay right.

  Part o' t' problem was in threadin' t' rod through t' aft bulkhead and t' lug and then gettin' it t' come out the hole in t' front. Begad! Another part o' t' problem was that cuttin' t' front hole/slit be ugly! In order to tame t' alignment problem, me bucko, I glued on two more launch lugs so that I had, shiver me timbers, in effect, me bucko, shiver me timbers, on long lug that extended from the aft bulkhead all t' way t' t' nose cone. That made thin' slide easier but it be still ugly. I also had worries about gettin' everythin' t' align again when I actually tried t' glue these assemblies together.

  After a breather, me hearties, I finally did somethin' smart. Begad! I changed t' X-Acto blade and went back t' work trimmin' the forward hole. Ya scallywag! Well, blow me down! I gave everythin' a test fit and, shiver me timbers, t' me utter amazement, matey, ya bilge rat, everythin' fit together nicely. A little thick CA be used t' secure t' BT t' t' front o' t' shroud and then t' close t' slot cut for t' lugs. T' same CA was also used t' glue t' after bulkhead into t' shroud. Ya scallywag! Care needs t' be taken at this point t' ensure that t' hole in the bulkhead lines up with t' launch lugs and that thar be no binding. Arrr! I accomplished this by usin' a short section of 1/8" rod t' ensure everythin' moved freely before and durin' t' gluin' process.

  T' original nosecone I ordered from Semroc did nay fit t' BT-20 so I ordered another one and patiently waited. When it arrived, me bucko, it be in good condition but I knew I could remedy that in short order. Begad! I filled it with Elmer's Fill ‘n' Seal and sanded it. It was then in a little less good condition than when it arrived (normal for me) and I painted it black.

  I connected t' Keelhaul®©™® to 14" o' 1/8" thick elastic t' complete t' shock cord and then put a snap swivel in line a few inches from the nose cone. I understand that this rocket needs nose weight but I don't really have a feel for that. Ahoy! Altitude is not my concern since I usually fly from a small field. Avast, me proud beauty! Ahoy! I decided t' go heavy rather than light because I want this rocket to stick around for a while. I glued a ¼" washer t' t' nosecone and then screwed in an extra heavy duty eye screw. Blimey! It was t' biggest one that would fit both in terms o' screw diameter and in terms o' t' shank length.

  PROs: nay too dificult, a venerable rocket

  CONs: shroud subject t' gettin' messy from glue

  Finishing:
  T' Vulcan is mostly finished by virtue o' havin' a preprinted shroud. Blimey! Well, ya bilge rat, blow me down! T' nosecone be t' only thin' that needs work. Blimey! I think t' original had a plastic nosecone but I used balsa, ya bilge rat, which had t' be filled and painted.

  Pros: looks very cool

  Cons: easy t' mess up shroud

  Construction Rating: 3 out o' 5

  

  Flight:
  T' first flight be on an Estes B6-4. I loaded t' motor and igniter and t' put a bit o' dog barf in t' BT. I had planned on usin' a 9" nylon chute but that was unworkable. Avast! Aye aye! I could nay get it, shiver me timbers, t' shock cord, and t' nosecone into t' space I had left. Since a 12" plastic chute is smaller, I tried that. Avast! Ahoy! It barely fit.

  With great anticipation, me hearties, I hooked up t' leads and pushed t' button. Avast, me proud beauty! It took off into t' sky with a lazy corkscrew motion at t' tail. Aye aye! It seemed that me idea o' mountin' a lug directly against t' BT was nay workin' out. Avast, me proud beauty! To make matters a bit more hairy, matey, t' chute ejected but did nay open. I watch t' entire thin' come crashin' t' the ground. Blimey! Fortunately, arrr, thar was no real damage.

  T' second flight be on an Estes C6-3. Aye aye! Again, I had problems loadin' t' chute and this time could nay get it all in. Well, blow me down! Begad! Blimey! I snipped out about 10" o' Keelhaul®©™® and 8" o' elastic and then managed t' get everythin' stuffed.

  T' rocket went up about 30 feet, and from that point, me hearties, things get rather vague. Avast! Ya scallywag! It went all over t' sky but mostly stayed horizontal. Blimey! It then crashed t' earth with a deployed but unopened chute. Avast, me proud beauty! Upon inspection, I found that the main body shroud had torn too badly t' be worth repair.

  PROs: It flies

  CONs: It does nay fly very well

  

  Recovery:
  My chute failed t' deploy on both flights. Avast, me proud beauty! Blimey! Aye aye! Blimey! It ejected each time but never opened. Blimey! Blimey! I think this is because it was packed so tightly.

  PROs: bounces well when chute fails

  CONs: needs t' bounce well because chute fails

  Flight Rating: 2 out o' 5

  Summary:
  I still like this rocket and will probably eventually build another one. Arrr! Blimey! Ya scallywag! Blimey! When I do, I guess I will need t' add even more weight up front. Begad! Blimey! I also need t' rethink t' BT. Begad! Blimey! Ya scallywag! Blimey! T' little bit o' difference with t' Semroc BT might have made stuffin' t' chute a bit easier.

  It flies like a dog but is still a cool lookin' rocket

  Overall Rating: 3 out o' 5