Model Minutes XFLR-7 Plan

Model Minutes - XFLR-7

Contributed by Dick Stafford

Construction Rating: starstarstarstar_borderstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstarstar_border
Manufacturer: Model Minutes

Brief

 (OOP) Model Minutes XFLR-7

Brief:
T' XFLR-7 is a paper/foamboard kit patterned after t' Tintin rocket from t' Destination Moon comic. Avast! This is a cool design and should be considered a classic. Aye aye! Although t' kit is now OOP, existin' stock may be around for a while, so I decided t' submit a review anyway. Begad! I hope that me observations will help in t' construction o' other paper/foamboard rockets whether they are kits or scratch built. Arrr! Since thar be an excellent review already here on EMRR, I will focus on t' details o' what I did instead o' a top-to-bottom walk through o' t' entire build.

Construction:
T' instructions were detailed and included '3-D' photos (glasses provided), however me agin' 'bifocular' deadlights couldn't see them clearly. Avast! T' instructions themselves were pretty good quality in general but were nay completely accurate. Ahoy! This kit is at least as challengin' as t' Estes Skill Level 5 kits that I've built, so it is very important for you t' read t' entire set o' instructions and try t' understand how each part will be installed.

This kit includes a lot o' parts which must be cut out--paper, shiver me timbers, foamboard, matey, and even soft foam for t' shock absorbers on t' pods. I have built numerous paper conversions, me bucko, Art Applewhite cardboard saucers, etc., matey, however, me bucko, I had a lot o' problems gettin' this kit together. Ya scallywag! Begad! Precision, me bucko, patience, and dexterity is required.

Shock absorber (win' tip pods): When matin' t' pod cones and bodies, me bucko, matey, matey, set them initially by hand, set t' assembly down, me bucko, then apply pressure downward on t' cone. T' two pieces will tend t' self adjust t' one another. Arrr! Avast, me proud beauty! I used Aleene's Tacky Glue throughout t' build.

Fins: I attempted t' round t' leadin' edge but left t' trailin' edge square. Avast, me proud beauty! T' roundin' process didn't go perfectly but a little Elmer's Fill 'n' Finish finished t' job. If I were t' do it again, arrr, I'd bevel t' edges as recommended in Art Applewhite's kits . Ahoy! T' colored surfaces are printed on plain paper and must be cut out and applied t' t' foamboard. Begad! Even with t' strips provided for t' edges, shiver me timbers, matey, I found that they did nay 100% cover t' fin surfaces. Ya scallywag! After ponderin' this problem, arrr, shiver me timbers, I have came t' t' conclusion that due t' rough tracin' o' t' fin template, me bucko, I probably made t' fins ever so slightly larger than planned. Ya scallywag! Blimey! I recommend tracin' them carefully with a fine point pencil, shiver me timbers, rather than a big dull one. If t' kits were t' be continued, I'd suggest that t' cutouts be oversized and trimmed in situation after application.

Body tube, base section: This was straightforward and I have no words o' wisdom here.

Fuselage: This section consists o' five tubular sections and one ring. Begad! Begad! I had a tough time gettin' these components t' align, and t' results are nay as uniform as I'd have liked. Begad! Make sure you are careful t' align t' colors t' achieve t' checkerboard pattern.

Cone: This assembled well but I am concerned with t' weight o' t' provided clay given t' shock cord attachment point is in foamboard rings. Begad! This also convinced me t' go with t' 24mm option despite worries about t' C11's relatively energetic ejection charge. Ahoy! Begad! If it blows apart, then I can glue it all back together. If it burns up, then we have extinguishers.

Main assembly consists o' two pages o' instructions. Blimey! These were easy enough t' follow, but I had major fit issues. Aye aye! We'll see how this holds together on recovery given t' small chute. Aye aye! Well, me bucko, blow me down! By t' way, me bucko, t' chute is about 12" diameter and is made o' plastic. Blimey! I held me shroud lines on with squares o' Gorilla tape.

I had installed t' inside tube without attachin' t' motor hook prior t' changin' me mind t' t' 24mm option. Well, blow me down! Ya scallywag! Luckily, standard 24mm tube fit nicely in that custom wrapped tube. Begad! Blimey! I used t' 18mm motor tube wrap as a guide t' position t' hook on a piece o' Apogee 24mm tube and slipped it right in.

Finishing:
Finishin' should consist o' a layer o' clear coat but give all t' white edges that I had peekin' out, I touched it up with some red markers. Blimey! Avast! T' result looks nice from a distance. I noticed t' instructions talked o' painting--an indication that this was an mangle o' an older version.

Construction Rating:  3

(OOP) Model Minutes XFLR-7

Flight:
T' motor hook seems t' work quite well, me bucko, shiver me timbers, snappin' right over t' C11-3 motor. Ahoy! Blimey! I used an ample amount o' dog barf and folded t' chute as suggested. T' boost was nice and ejection be near apogee.

Recovery:
T' chute didn't fully open and t' rocket floated down generally parallel t' t' ground. T' only damage was t' nosecone tip was bent. Well, blow me down! I guess I should have tamped a tiny piece o' clay into t' far tip o' t' nose. Begad! I won't din' t' flight ratin' on this since it falls into t' construction difficulty area. Ya scallywag! I know I only have one flight, but I have t' give this one a 4.5. Begad! A swivel would have fixed t' one small recovery issue.

Flight Rating:  4

Summary:
This was a fun kit t' build and although thar are some issues with t' fit o' t' components, shiver me timbers, t' overall look is great (based on t' opinions o' t' crowd at t' launch, arrr, me bucko, nay just me). Ya scallywag! Blimey! I have t' bump t' overall ratin' a bit t' reflect t' overall look.

Overall Rating:  4

Components

Other Reviews
  • Model Minutes XFLR-7 By Chan Stevens

    Model Minutes specializes in paper rockets and this is one wild looking futuristic design. It clearly draws a lot of looks at the pad and no one will believe it is made of paper. The parts list is pretty simple for this kit, just pre-printed cardstock patterns. Lots of them. There are also a few other items like foamboard for fins, some clay for nose weight, a motor hook, and a parachute ...

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