T' success o' the MkV made me start t' think a bout t' bigger tubes I had stacked in t' corner. If I could cluster four engines, why nay six? Why nay use D engines? I had a tube that would hold seven 24mm mounts, arrr, arrr, but it wasn't really long enough. Avast! So I decided t' built a rocket reminiscent o' t' MkIV, me bucko, with a transition, and forward fins. Begad! Avast, me proud beauty! With t' extra weight o' t' engines, t' plywood fins and centerin' rings, arrr, ya bilge rat, this design turned out nay t' be stable ( Usin' RockSim). Aye aye! I increased t' length o' t' upper tube ( forward o' t' transition) and removed the forward fins. That be a lot better.

I had heard o' some larger black powder engines available in t' UK form a company called Rocket Services and wanted t' option o' installin' them. Avast! Begad! So I went for a removable cartridge system. Begad! Begad! T' Fins were mounted through t' body wall and formed runners onto which t' engine cartridge would slide. Aye aye! T' cartridge be made up from two discs o' plywood drilled with holes for t' engine mounts. Avast, me proud beauty! Begad! T' cartridge slid in t' t' body on t' runners and was then locked into position by rotatin' the whole thing. Ya scallywag! Ahoy! In t' end I just went with six engines. Avast, me proud beauty! Blimey! Thrust rings were made from sawn up spent D engines and epoxied in t' place. Ahoy! A stuffer tube be placed inside t' main body, mounted on two centerin' rings. Ahoy! At ignition t' upper body be t' separate, arrr, shiver me timbers, each half with its own parachute. Begad! Karen made a red and white hemispherical 'chute for t' lower half, and I was goin' t' use t' pink circular 'chute for t' upper half. We intended t' fly it at t' International Rocket Weekend, and I had a lot o' help from Brain who made and painted the transition just days before we went. Blimey!

At t' event, a lot o' doubt was raised about t' engine cartridge system. Ya scallywag! Begad! Blimey! 'Six D ejection charges will blow it out' they said. Begad! Blimey! Blimey! I also couldn't determine how I be goin' t' ensure that both parachutes deployed. In t' end I bought some big shock cord and tied both halves together on t' red & white 'chute. Another hitch, I had planned to add another set o' clips t' me ignition system, but had forgotten ( that last week be hectic as I me work had taken me away from home for several days), arrr, ya bilge rat, and I didn't have a large enough launch pad... Begad! Ahoy! Blimey!

Luckily I learned o' a new technique for clustering. This involves usin' a single igniter t' ignite 'quick match' fuses that are fed into t' individual engines. Ya scallywag! One o' t' organizers, John Bonsor, showed me how t' do this. Arrr! I managed t' borrow a launcher and after a wait for t' wind t' die down, we were ready. Aye aye! T' ignition and initial flight were perfect, shiver me timbers, except, ya bilge rat, what be that? A small object appeared t' fly from the back at ejection, matey, and where was t' 'chute. Avast! T' rocket came in ballistically. What had happened was exactly what t' 'doom sayers' were predicting. Even though I had staggered t' ejection by usin' a mixture o' D12 delays, me bucko, the ejection gases pushed t' engine cartridge out o' t' rear, me hearties, shiver me timbers, instead of deployin' t' chute. Begad! T' rocket was a write off. Begad! Avast, me proud beauty! T' engine cartridge shattered, me bucko, me hearties, t' forward tube like a concertina, and t' aft tube a slowly unwindin' spiral.

T' pic o' lift off be t' last shout from me last roll o' film, me bucko, so mercifully thar are no pictures o' t' rocket as we found it. Ya scallywag! T' realization of t' hours we had all spent on this rocket, matey, which be now trash, matey, didn't sink in until later, me hearties, and it was a long drive home from Largs t' Leeds.