Required Materials:
Test Fin Can:
-fiberglass
-plywood (1/4")
-epoxy: West Systems 6 or 24 hour OR Aeropoxy (cheaper, but needs oven cure)
-5minute (to stick fins to tube)
-some cheap tube
-bagging materials:
-release film
-bleeder fabric
-vacuum bag
-peel ply
Actual Fin Can
-Mylar (for initial layup over tube)
-Phenolic tube
-CF (5.7 oz, 2x2 twill/plain weave)
-wax paper
-spray glue
-epoxy (6 or 24 hour for root bond, not oven cure)
-squeegees
-rollers
Laminating epoxy (24hour) if oven curing
-G10 (1/8")
-Phenolic (1/4")
-15deg end mill (LOOK INTO THIS, talk to ethan)
-Mandrel
-Bagging materials (peel ply, bleeder fabric, release film, vacuum bag and vacuum tape)
-ppl with respirators
-proline (for root filler)
-little popsicle sticks
-big popsible sticks
-3D printed fillet tool
-boats for epoxy
Preparation:
FIT PHENOLIC OVER MOTOR TUBE
Fin jig
-1/4" MDF
-MAKE SURE HOLES ARE BIG ENOUGH
-Fin thickness
What DO: Test fin can
) Cut fins to shape
) bevel edges (sand or end mill)
) stick wax to fabric using spray glue
) cut fiberglass shapes scissorss
) weigh fiber --> use later for wetness ratio
) mark centerline
) Cut tube to size
) Score tube (coarse grit 60-180)
) score fins
2) Put tube in jig
3) Put 5-minute on backs of fins
4) Put fins in
5) Finish assembling jig (put top layer on --> push so that it gets caught on leading edge, BE CAREFUL after glue is set and of messing up LE
) let cure, take it out
) PUT ON YO REPISTROAR
) mix laminating epoxy with colloidal silica
)use fillet tool to add fillets
)let cure
) sand
)mark centerlines on the tube
TIP 2 TIP
) mix epoxy
) weight amount of epoxy used
) wet the glass sheets with laminating epoxy using squeegees
) layup
) vacuum bag (MAKE VACUUM BAG PROCEDURe --> see vacuum procedure)
POSt -procesing
THE REAL DEAL
) cut tube to length
) make sure it fits over motor case
) score eryting
CF layup around tube
- + ONE DAY
) make appropriate fin jig
) assemble in fin jig , root bond
- WAIT one day
...
- + one day
) sand
) outer fillets
- + ONE DAY
) sand outer filletz
)