Brief:
Up-scaled t' 38mm.

Modifications:
For me level-1 certification and me first high-power rocket I wanted a large, simple rocket kit without any bells and whistles. Well, blow me down! Blimey! Begad! Blimey! I chose t' LOC-IV as I thought it looked t' fit t' bill, and wouldn't break me credit card. Arrr! Blimey! Blimey! Blimey! I decided to up-scale t' 38mm rather than stick t' 29mm because I liked t' motor selection and thought I'd get a lot o' use out o' t' 38mm RMS reload set in the future. Ahoy! Blimey! Begad! Blimey! T' modification was pretty straight-forward. Ahoy! Blimey! I got a heavy duty 38mm cardboard motor tube from a friend (thanks, ya bilge rat, shiver me timbers, Dave) and used three, instead of t' kit's two, centerin' rings for t' motor mount. I mounted one rin' on the fore end o' t' motor tube, and mounted t' other two on either side o' the thru-the-wall fin tabs. Avast, me proud beauty! Blimey! Ya scallywag! Blimey! T' kit surprised me when I found that t' fin tabs only mount through t' airframe wall, arrr, and nay all t' way t' t' motor mount. Avast! Blimey! Avast, me bucko, me proud beauty! Blimey! I considered cuttin' new fins with longer tabs but in t' end decided t' stick with t' stock fins. I added three tee nuts t' t' read C.R. Arrr! Blimey! Avast, me proud beauty! Blimey! for motor retention with aluminum screen clamps and 8-32 x 1" hex head bolts. Ahoy! Blimey! I added a stainless u-bolt t' t' forward C.R. for shock cord attachment. Avast, me proud beauty! Blimey! I added a few ounces o' lead weight t' t' nose cone for some additional stability, arrr, arrr, but later realized that it was unnecessary. Finally, matey, shiver me timbers, I up-scaled t' included 36" chute t' a 48" round nylon chute t' compensate for added weight and t' give a nice, me hearties, slow recovery for me level-1 attempt.

Overall, matey, I like t' LOC kit. Blimey! Well, blow me down! Blimey! Good materials, instructions, me bucko, and packaging. T' only negative would be t' short fin tabs. Begad! Ahoy! Blimey! I highly recommend cuttin' new fins with extended tabs for this kit.

Flight:
T' first flight was at SpudRoc-IV for a level-1 cert on a H123W RMS motor. Avast! The winds were low and t' rocket flew perfectly straight t' about 1800' and ejected perfectly at apogee. Well, blow me down! T' rocket drifted quite a distance but landed with hardly a scratch. Avast, me proud beauty! Arrr!

T' second flight was later t' same day on an I357T. Avast, me proud beauty! T' flight was straight but t' ejection delay came early and t' tubular nylon shock cord zippered t' tube about 4". Begad! I had also changed back t' t' 36" parachute t' avoid t' long walk across t' desert t' recover t' rocket. Ahoy! Begad! This however gave too fast a descent rate and one fin broke on impact. Aye aye! I later repaired t' zipper by added a tube coupler and a 10" length o' 4" airframe tubing. Ya scallywag! Aye aye! T' new LOC-IV-38-stretch added an additional 6" t' the overall length. Arrr!

T' third flight be on a H242T, me hearties, which from simulations looked t' be the best motor choice. Avast! Aye aye! T' winds however were fairly strong and t' rocket weathercocked and even though ejection occurred near apogee t' rocket had too much horizontal speed and again zippered t' tube. Arrr! T' tube was repaired simply by cuttin' 4" off t' recently added repair tube and t' rocket is back to close t' original length. Arrr!

T' fourth flight was again on a H123W, me bucko, matey, ya bilge rat, ejection at apogee, 48" chute but still a rough enough landin' t' break a fin. Aye aye! T' rocket is now repaired and awaitin' its next flight.

Summary:
A good, matey, matey, easy up-scale project. Avast, me proud beauty! Begad! Suggestions: Cut new fins with tabs t' mount to motor tube. Begad! 48" chute a must. Ahoy! Ahoy! Glass tube.