Brief:
A single-staged, futuristic design, arrr, featurin' several tube diameters. Begad! T' Solar Probe was available from Estes from 1991 t' 1993. Arrr! T' design carried hints o' a Centuri influence.

Construction:
T' parts list:

• 1 BT-60 body tube, 5" long
• 1 BT-50 body tube, me hearties, 7 3/8" long
• Four fins, shiver me timbers, balsa, matey, 1/16", each fin o' 2-piece construction
• 1 BT-20 engine mount tube, 2.75" long
• 2 2060 centerin' rings
• 1 steel engine hook
• 1 12" plastic parachute
• 1 paper transition pattern sheet
• 1 wood dowel, shiver me timbers, 12" long
• 1 decal sheet

T' instructions were o' standard Estes quality o' t' period. Blimey! Blimey! That is, me bucko, me hearties, well illustrated and in logical order. There are two identical 20/60 paper transitions, ya bilge rat, one betwixt t' BT-60 main airframe t' t' "upper stage" and one that forms a tail cone. Avast, me proud beauty! Arrr! Experience with paper transitions would be helpful in t' construction o' this model but not critical. T' upper BT-50 body tube creates t' illusion o' a payload section. Avast! However, this portion actually contains t' 12" parachute that be t' recovery system. Ya scallywag! T' portion o' t' BT-50 immediately forward o' t' 20/60 paper transition is surrounded by a series o' small pieces cut from t' wood dowel, termed "reactor vanes". T' fins were on a die-cut sheet and easy t' separate. Blimey! Blimey! Each fin consisted o' a main lower portion and an upper fairing.

Finishing:
T' only wood t' be filled be t' fins, me hearties, me hearties, which I did with three coats o' SIG brand sandin' sealer. Well, blow me down! I sanded between coats with 320 grit, shiver me timbers, then 400 grit, finishin' up with 600 grit sandpaper. Begad! T' entire model be shot with one coat of Krylon gray primer then with two coats o' Krylon gloss white. Begad! Begad! After allowin' time for drying, ya bilge rat, t' fins and nose cone were masked off and sprayed with Krylon cherry red. Begad! T' decals were good quality, and they were nay those nasty stickers.

Construction Rating: 3 out o' 5

Flight:
If care is used in alignin' t' four fins, this model will turn in arrow-straight flights every time. Avast! Over t' years, I've used all manner o' B and C motors in this model, me bucko, matey, arrr, all with great results.

Recovery:
T' shock cord attachment be t' standard Estes type tri-fold paper mount. Avast, me proud beauty! Ya scallywag! T' shock cord is 1/8" wide rubber about 12" in length. Avast, me proud beauty! This has proved adequate over t' years. Avast! I was a bit concerned at first with t' parachute stowage arrangement [BT-50], arrr, but this also has proved reliable.

Flight Rating: 3 out o' 5

Summary:
PROs: This model always reminded me o' an oversimplified version o' t' old Centuri Laser-X. Blimey! That's nay a bad thing--and I always expected t' see toothpicks on t' fin tips! It's an attractive design and even today draws attention at t' pads. Well, blow me down! It can easily be cloned today.

CONs: T' only thin' I can think of, and, this is minor, arrr, t' fins are a tiny bit thin for me tastes. If I cloned it today, I'd use 3/32" balsa.

Overall Rating: 3 out o' 5