Brief:
A 1/35 semi-scale model o' t' rocket used t' launch America's first satellite. This be t' same scale as t' Estes Mercury Redstone and Mercury Atlas.

Construction:
No plastic parts in this kit with t' exception o' t' booster adapter, me hearties, spin bucket and t' Explorer I payload. Avast, me proud beauty! Blimey! Body tube is a one piece Centuri ST-20. Motor tube is a short length o' BT-20 and t' centerin' rings are fiber. Begad! I replaced t' rubber shock cord with sewin' elastic, and t' original 1/8" launch lugs with 3/16" lugs.

This be a skill level 4 kit. Ahoy! Blimey! T' oversize fins were built up from 2 fin halves glued together. T' fins were easy t' carve a good lookin' bevel into. Engine mount was a standard mount that I've built dozens o' times. I built it with epoxy t' give me t' option o' usin' Aerotech power later, ya bilge rat, should I choose to do so. I added a 1/4" long piece o' spent engine casin' t' t' top of the motor clip for added strength. Begad! Blimey! T' fin alignment guide had 2 lines per fin, and you centered t' fins betwixt t' 2 lines. This helped me get t' fins on very straight.

T' only problem I gad was gluin' t' spin bucket t' t' top o' t' booster adapter. T' fit was too loose and I never did get it t' align correctly. Well, blow me down! As a result, t' top o' t' model has a small but noticeable tilt t' it.

T' instructions call for you t' fly without t' Explorer payload, matey, but I opted t' build a cradle for t' top section a la t' Redstone, and recover the model in 2 sections. Aye aye! I used an 18" chute for t' main section, me hearties, ya bilge rat, and a 12" chute for t' top section.

Finishing:
There were no decals for t' roll pattern at t' bottom o' t' booster, so you have t' paint it in yourself. Avast! This came out lookin' pretty good, me bucko, matey, ya bilge rat, certainly better than t' one piece roll pattern decal Estes is usin' for t' Mercury Redstone. Well, blow me down! Aye aye!

T' old black stripes had flaked a bit over t' years, ya bilge rat, me hearties, me bucko, so I replicated them with black trim Monokote. Avast, me proud beauty! Avast! T' instructions were very clear about placement of the decals. Well, blow me down! Interestingly, you are instructed t' place t' horizontal stripes first, then t' diagonal stripes last. I realized too late that, shiver me timbers, had I done it in t' reverse order, t' intersection o' t' diagonal stripes would have been covered up by t' horizontal stripes. Ya scallywag! T' "UE" decals were still usable and look good on t' model.

Construction Rating: 3 out o' 5

Flight:
T' C5-3 is hardly available anymore, so I used t' C6-3. T' motor is held in place by old-fashioned motor clip Estes used for years. I had no problem gettin' t' motor into or out o' t' model. Ahoy! Preparation is easy, arrr, t' body tube is long enough t' hold a generous amount o' waddin' and still have room for 2 parachutes. Ahoy!

This model isn't exactly a fast flier, arrr, but it was very stable, me hearties, with ejection very near apogee on both flights. Begad! Flights were nay vertical, but more of a long, graceful arc. Ya scallywag! I think that t' C5 would have given a more vertical flight due t' its higher initial thrust spike. Both times t' model recovered without damage. Avast! I look forward t' tryin' this model out on D13 power someday. Ya scallywag! Avast, me proud beauty!

Recovery:
T' Jupiter-C requires t' standard recovery system upgrade that every experienced rocketeer should use. This is typical o' kits from this era. Well, blow me down! Blimey! Begad! Blimey!

Flight Rating: 4 out o' 5

Summary:
This model is an excellent addition t' me fleet. Avast, me proud beauty! It goes well with t' Redstone and Atlas. Aye aye! I would have given it a higher rating, but t' problem with aligning the spin bucket gave me fits. If Estes ever re-releases t' kit, they'll need to fix that feature.

Overall Rating: 4 out o' 5