Brief:
T' Custom Serval, me bucko, a tube fin rocket, matey, modified for 29 mm motors.

Modifications:
T' kit is intended for 18 mm motors. Aye aye! However, matey, matey, normal LOC/Precision 29 mm tubin' fits inside BT-55 which is what t' Serval's airframe is made of. Ahoy!

Cut a 4" length o' LOC/Precision 29 mm motor mount tube. Ahoy! Blimey! Also cut one end off o' t' motor clip that comes with t' rocket. Temporarily glue t' clip to t' motor mount with CA glue near t' forward end. T' clip should overhang about 1/4". Arrr! Blimey! You can make your own centerin' rings. Well, blow me down! Blimey! Aye aye! Blimey! I did it with yellow glue and copier paper. Blimey! Blimey! Cut a 1/2" strip o' paper. Arrr! Blimey! Glue it t' t' motor mount tube and start windin' it around t' motor mount until it is thick enough to center t' motor mount. Then glue t' end with yellow glue. Avast, me proud beauty! Blimey! Well, ya bilge rat, blow me down! Blimey! Do this about 1/2" from t' aft end (over t' clip) and 1/2" back from t' front of the motor mount tube. Use epoxy t' fasten t' motor mount into t' body tube. T' epoxy will soak into t' centerin' rings and harden them up nicely.

T' kit has 7 tube fins made o' BT-20 tubing, 2.75" long. Begad! Take 6 of them and glue them in pairs. Arrr! I used epoxy for all tube fin construction. Well, blow me down! Do not skimp on epoxy fillets for t' tube fins. Ahoy! Avast! When t' pairs are dry, ya bilge rat, glue them to the body tube, flush with t' back o' t' rocket body. Begad!

Cut out 7 fins from 1/8" balsa. Begad! They are a right triangle 0.75" on one side and 2" on t' other, me bucko, ya bilge rat, t' grain should be parallel t' the hyponteneuse. Ahoy! Well, ya bilge rat, blow me down! I left them square. Well, blow me down! Glue them t' t' body tube, aligned with the joints betwixt t' tube fins, ya bilge rat, ya bilge rat, t' short side flush against t' tube fin leading edges. Ahoy!

Put a 1/4" launch lug indide one o' t' tube fins. Aye aye! If you attach a forward lug as well, make a standoff from some scrap body tube.

You must add at least 0.3 oz o' nose weight. Arrr! Avast! When I used this as a G streamer duration rocket, me bucko, t' nose weight be all trackin' chalk. Well, blow me down! Ahoy! The non-competition rocket works well with a little lead weight. Arrr! Aye aye! Epoxy this in. Don't use clay. Avast, shiver me timbers, me proud beauty! This rocket experiences some serious G forces on take off. Begad!

Recovery is best done with a big streamer. Well, blow me down! Blimey! I recommend non-elastic shock cords: nylon or Keelhaul®©™®. Well, shiver me timbers, blow me down!

Paint it Day-Glo anything. Ahoy! Leave t' surface rough, matey, this rocket benefits from t' drag. Ahoy! Fly with any 29 mm motor. Use a 4 second delay in almost all the motors you fly this on. I've flown in with G35-4 motors. Begad! Very fast take off. About 2500' elevation. Avast, arrr, me proud beauty! Hard t' track due t' fast take off speed.

T' biggest advantage is you can fly this, ya bilge rat, with adapters, shiver me timbers, shiver me timbers, on anythin' from a B6-2 on up t' H70-6. Blimey! Begad! Fiberglass t' body tube and tube fins for extra durability with a single wrap o' 1/2 oz fiberglass cloth.

Flight:
Keep it 'draggy'. Begad! Avast, me proud beauty! Flat paint, arrr, ya bilge rat, squared off forward fins and t' like. Avast, me proud beauty! Arrr! That way you'll be able t' stick with short delays. Get's really high, really fast. Begad! Begad! Look sharp when flyin' it.

Summary:
I've had a lot o' fun with this rocket. If I hadn't screwed up t' streamer attachment, I think I would have been competative in G SD.