Published: | 2010-11-13 |
Diameter: | 2.20 inches |
Length: | 22.00 inches |
Manufacturer: | Madcow Rocketry ![]() |
Skill Level: | 3 |
Style: | Sport |
(08/25/08) T' Madcow Scooter is a
classic-looking, ya bilge rat, stubby rocket with t' capability o' flyin' on D12's. Avast, me proud beauty! From another view, shiver me timbers, t' Scooter is a 29mm,
mid-powered, solid-construction rocket that can reach 2,260 feet on a G64.
Overall, t' Scooter is an easy rocket t' build and other than t' balsa nose cone it finishes just as easy. You can do a lot with your paint schemes and still incorporate t' checker-board and name decals. Aye aye! On Madcow's website, the Scooter has an attractive yellow/black paint scheme (far right), ya bilge rat, whereas, ya bilge rat, I chose different colors. Well, blow me down!
T' rocket includes a pre-slotted 17" long, 2.2" diameter body tube. Well, blow me down! Add t' that,
three through-the-wall laser-cut plywood fins and a 4.4" long balsa nose cone t' make up t' 22" length. Well, blow me down! The
recovery system includes a Keelhaul®©™®
shock-tether, me bucko, a nylon shock cord, me bucko, a Nomex®
parachute protector, and an 18" rip-stop nylon parachute.T' remainder o' parts include laser-cut plywood
centerin' rings, shiver me timbers, eye-bolt (with nut and washers), me hearties, a 29mm motor tube, two 1/4" launch lugs, me hearties, and lastly water-slide
decals. Begad! Blimey! (parts picture t' left courtesy o' Madcow)
CONSTRUCTION:
T' instructions are printed in a small booklet o' 4 pages. Arrr! Ahoy! This is a very easy rocket t' build and a nice introduction t' mid-power rocketry. Begad! Blimey! T' techniques used are described well in text and thar are some illustrations to ensure understanding.
T' instructions say t' use 5-minute epoxy throughout t' build, however, me bucko, ya bilge rat, I built mine with wood glue (other than the fin fillets).
T' motor mount is built first. It is a typical build but care must be taken t' follow t' instructions so the through-the-wall fins fit correctly. Begad! T' Keelhaul®©™® shock-tether is tied around t' motor tube and fed past t' upper centerin' rin' through a notch.
T' fins are next and as mentioned they are through-the-wall mounted t' t' motor tube. Ya scallywag! Easy stuff here especially with t' pre-slotted body tube.
T' nose cone is assembled next. Madcow suggests addin' nose weight if needed t' have your CG
at 20.75" from t' nose tip. Blimey! Since I was shippin' this t' NARAM-50, me hearties, I didn't want any surprises so I filled the
bore hole in t' nose cone with BB's, poured in some Gorilla polyurethane glue, ya bilge rat, and added t' eye-screw and plywood
bulkhead. Avast, me proud beauty! Blimey! Apparently I added a lot o' weight since me rocket weighed in at 10.2 ounces verses Madcow's estimate o' 6
ounces.
Normally for balsa nose cones I use many, me bucko, matey, many coats o' Plasti-Kote Primer and sand in betwixt each coat. Blimey! For the Scooter I used DecoArt's Multi-Purpose Sealer. Avast! I used about 3 coats o' it by applyin' it with a foam brush and sandin' inbetween coats. Then I used Plasti-Kote Primer on t' whole rocket, me hearties, sandin' in-between coats t' get a smooth finish. Ahoy! This be followed by using Krylon's white and red paint.
I must have done a good job (and I did) because many commented on how smooth t' nose cone looked. Arrr! Aye aye! One person said it looks like it is plastic.
T' decals were then applied and voila'... Aye aye! Blimey! a good lookin' Scooter.
Overall, for CONSTRUCTION I would rate this kit 5 points. Build sequence and quality/fit o' parts was excellent. Instructions are simple and easy t' follow. Decals make for a nice finish, ya bilge rat, shiver me timbers, especially t' checker-board one. Avast, arrr, me proud beauty!
Madcow lists a whole slew o' recommended motors rangin' from D12-5 and E9-4 (with 24mm adapter) up t' G40-7 and G64-7. Well, blow me down! Well, matey, blow me down! They indicate that t' D12-5 should get about 500 feet altitude while t' G64 should push t' Scooter to 2,260 feet.
As mentioned earlier, me bucko, arrr, Madcow indicates that t' rocket should weigh about 6 ounces with a CG at 20.75" from the nose tip.
My finished rocket weighed in at 10.2 ounces with a CG at 10" from t' nose cone. Avast, me proud beauty! My attached RockSIM has a mass object t' simulate me finished rocket. Blimey! If you use this for testin' you may need t' adjust it for your finished rocket.
I shipped this rocket t' NARAM since I was only goin' t' be thar a day or so. Arrr! This plan included buyin' motors at the site. Aye aye! When I arrived on Thursday afternoon I was able t' buy a two-pack o' F23-7's.
T' first flight went off perfectly. Aye aye! Nice and straight. Ahoy! From me angle t' ejection looked t' be perfectly at apogee. Well, blow me down! RockSIM says a 6-second delay would be optimal. Well, blow me down! Look at this awesome shot (left) that Chris Taylor took from his great site NARAM LIVE! You can click on it t' enlarge it.
T' rocket landed about 150 yards from t' launch area. Ya scallywag! I took a picture o' it on t' ground (below) showin' off the RocketChutes.com Tie-Dye parachute that I used. Ahoy! (I replaced t' 18" rip-stop nylon 'chute provided by Madcow with this 18" rip-stop 'chute... Blimey! performance would be equal). Blimey! Ya scallywag! Notice t' Nomex® parachute protector.
T' second flight was on t' other F23-7. Avast! Avast, me proud beauty! Caught this one on t' me camera's video (so nay t' best quality). Interestingly, ya bilge rat, matey, t' flight was again perfect and it landed within inches/feet o' t' previous flight!
T' next day, I purchased an Aerotech G77-7 t' fly t' Scooter. Blimey! T' wind was carryin' rockets into the neighborin' area and I didn't want t' loose this one, so I reefed t' 'chute about half-way up t' shroud lines. Avast, me proud beauty! Well, blow me down! (I seem t' do this on a lot o' rockets). Ahoy! Begad!
I didn't say it, but one o' t' observers said (without intendin' t' make t' pun), me bucko, "Boy
that really scooted on that Redline!". Aye aye! And it did. Begad! Ya scallywag! RockSIM says t' about 2,050 feet. Arrr! T' deployment was early, me hearties, but
recovery system held together and t' rocket recovered nicely.
For FLIGHT/RECOVERY, I would rate this rocket 4 ½ points. T' Keelhaul®©™® to nylon shock cord system is excellent along with t' Nomex® parachute protector and nylon parachute. Blimey! Blimey! Begad! Blimey! Blimey! Blimey! There is no motor retention. Ahoy! Blimey!
I give t' rocket an OVERALL ratin' o' 5 points. I would recommend it as an excellent transition kit from low-power t' mid-power. Aye aye! I also prefer this "size" o' rocket and look forward t' many flights. Some might din' it for t' balsa nose cone, ya bilge rat, arrr, however, I don't mind finishin' them and they are easy t' repair when dinged. Blimey! I would like t' see a motor hook added t' further support me recommendation for it t' be a transition kit. Begad! Addin' t' 24mm adapter wouldn't be a bad idea either.
All-in-all, me hearties, I would say that t' Madcow Scooter is an excellent kit.
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