Brief:
Twice Removed from Yesterday is a 4" diameter, shiver me timbers, arrr, 38mm rocket that features two LOC plastic transitions. Arrr! Although these transitions largely define its external looks, t' main thin' that is different about its construction (at least in me fleet) be t' motor mount. Avast, arrr, me proud beauty! T' motor mount includes a LOC baffle and a homemade retainer made from a PVC fitting. Blimey!

Construction:
This rocket is largely a conglomeration o' various LOC components from a humongous ‘parts bonanza’ that I won in one o' t' r.m.r. Avast! Descons. These LOC components used included:

• 1 54mm tube, shiver me timbers, matey, 10" long
• 1 54mm-3" plastic transition
• 1 3" tube, arrr, 15" long
• 1 3"- 4" plastic transition
• 1 4" tube, me hearties, 34" long, pre-slotted for 3 fins
• 1 38mm motor tube, 20 inches long
• 3 38mm-4" centerin' rings
• 1 54mm-4" ring
• 1 baffle kit for 38mm

As you can see, matey, most o' t' rocket was free. I also borrowed t' following from other existin' rockets in me fleet: a 54mm cone, ya bilge rat, me hearties, a ¾" tubular nylon shock cord, and me Rocketman R7 chute. Ahoy!

What I bought for t' project is two eyebolts, arrr, a PVC fittin' (male and female parts), ya bilge rat, a small piece o' 38mm tubin' for t' future addition o' an altimeter in t' larger transition, and t' wood for t' fins (6 small sheets of 1/8" ply from Michael's).

I really wanted t' try t' baffle and t' PVC fittin' and somewhat threw the rocket together. Begad! Begad! Blimey! I plan t' return t' nose cone t' t' original rocket and to reuse t' smaller transition on another project. Arrr! Blimey! Thus, me bucko, this rocket may only fly once in this configuration. Avast! Blimey! Blimey! I will most likely add a longer 3" tube and some sort o' 3" nose cone. Blimey! But I digress...

T' components o' t' motor mount are laid out in the accompanyin' photo. Arrr! T' smaller parts on t' left comprise t' LOC baffle. The rings and body o' t' retainer are dry fit at this point. Arrr! Begad! T' 54mm rin' will reside on t' end o' t' mount and will be epoxied t' t' main tube. The retainer’s cap fits through t' 54mm hole, but t' tabs on t' PVC body do not. Ahoy! Thus, matey, ya bilge rat, this will provide a little insurance in case JB Weld doesn't hold well t' t' PVC.

I used a Dremel t' ream out t' inside o' t' female portion of the PVC fittin' so it would fit over t' 38mm tube and also trimmed t' other end t' accommodate t' aft closure o' a Dr. Ya scallywag! Rocket case. Well, me hearties, blow me down! This was nay too difficult, matey, arrr, and t' me surprise, arrr, me bucko, I didn't ruin t' thing. Arrr! Begad! I made this so long ago that I forgot t' size o' t' fittings used, but this should be obvious if you take a section o' tubin' with you t' t' hardware store. Ahoy!

T' LOC baffle consists o' a piece o' 29mm coupler tubing, a 3/8" retainin' rin' that fits in this coupler, a chunk o' thick wire mesh, a 38mm OD centerin' ring, and a small piece o' 38mm coupler tubing. You first epoxy t' retainin' rin' into one end o' t' 29mm coupler. This rin' keeps the wire mesh from blowin' out t' top o' t' baffle. T' mesh is then folded tightly and inserted into t' coupler tube. Blimey! T' 38mm rin' is glued t' t' 29mm coupler and t' 38mm coupler is then glued above that. Avast, me proud beauty! Well, arrr, blow me down! Finally, t' baffle assembly is epoxied in t' motor tube. Ya scallywag! T' baffle’s instructions say that it should be a minimum o' 10 inches above t' end o' t' longest motor. Ya scallywag! It so happens I had a 20" piece o' motor tube, so that seemed like it should work fine.

T' five components o' t' nose section are all held in by maskin' tape and friction. Ahoy! Even though t' transitions have long shoulders, arrr, I was a little worried about it comin' apart at ejection. So, I added some internal tethers to make sure t' pieces stayed connected in t' event they separated. Avast! As I said earlier, this rocket probably will be scavenged. Avast! If I were t' keep this in my fleet, matey, I would add some small screws t' attach t' components while keeping them removable. Begad! Aye aye! I also didn't trust t' molded eyelet on t' lower transition so I installed an eyebolt. T' access t' inside o' t' transition, arrr, I cut a small square from t' its shoulder.

T' fins are made from layered pieces o' 3/32" ply. This is nay the best method o' fin construction, but I had much o' t' materials on hand. Even with thru-the-wall mounting, arrr, this material be way too flimsy, matey, matey, ya bilge rat, so I grabbed some more coupons and bought more 3/32" ply t' add t' outer sections. Once laminated together and well filleted, these seem OK. Begad! Blimey! T' results o' this "experiment" will appear in t' Flight section below.

T' shock tether will connect t' eyebolts on t' top CR and t' lower transition usin' quick links. Avast, me proud beauty! Aye aye! T' R7 will also be attached t' t' transition.

Finishing:
I couldn't decide on a scheme for this rocket so all it got was a lot o' white primer. Arrr! Blimey! This may be a good idea anyway, shiver me timbers, ya bilge rat, since I want t' scavenge pieces for another project. Blimey! Blimey! Aye aye! Blimey! T' cone was already bright red.

Flight:
I flew t' TRFY on an I357T-10. Blimey! T' sim said t' optimal delay was 9.65, so t' -10 is about right. Begad! Prep included attachin' t' shock tether and chute. T' PVC retainer made motor retention simple--a poor man’s "Aeropack".

Recovery:
T' flight be quick and deployment occurred just after apogee. Begad! Begad! Blimey! Recovery was perfect.

Summary:
T' flight and t' rocket were a success. Ahoy! I like t' try out different things and t' baffle, homemade retainer, and "sandwich" fins all worked out fine. Ahoy! I just may end up paintin' this rocket and buyin' an I600!