#11
|
||||
|
||||
Those vac-formed fins are pretty tough!!! On my Centuri model, they survived a fall after a sky-writing episode onto a wet soccer field that stuck one fin into the muddy ground Lesson learned: don't fly with a 29mm motor without the clear fins!!!!
|
#12
|
||||
|
||||
Quote:
.
__________________
I love sanding. |
#13
|
|||
|
|||
Quote:
Heh, heh, I learned that about acetone this morning. How about laquer thinner? I tried the Testor's liquid cement again. I'll check how the joints held up tonight. Either way, I'm going to make some slip-on clear fins. I have a sheet of clear butyrate around somewhere.
__________________
NAR #27085 - Oregon Rocketry - SAM |
#14
|
||||
|
||||
Quote:
I believe I glued mine on with Testor's glue (orange tube)...I built mine before I knew about Tenex or other liquid cements. FWIW, here is a tracing of the slip-on Centuri fins from my kit... |
#15
|
||||
|
||||
I use enough nose weight to where SCALE fins are enough.
It demands MORE POWER.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#16
|
||||
|
||||
I used Testor's tube cement (orange) on my Centuri Saturn 1B and V when I was a kid, but that stuff had some heat to it. Today's version isn't worth spit.
I fairly recently built one of my Maxi V-2 reissues with Tenax-7R. Amazing stuff!!! Unfortunately, you can't find it anymore. Next best thing is probably Plastruct Plastic Weld, Micromark "Same Stuff", or Ambroid Pro Weld. If you want to go bulk, grab a quart of MEK, which is probably more like Plaststrut. Main ingredient for Tenax, Same Stuff, and Ambroid is methylene chloride, IIRC. I think Plastruct is mostly MEK. Some folks like Plastruct better because it flashes off a little slower than Tenax and Ambroid. I've never tried them, so I don't know. YMMV. Plaststrut also makes a product called Bondene, but I've never seen anyone talk about it.
__________________
I love sanding. |
#17
|
|||
|
|||
Quote:
Great, thanks! That's easier than I thought. I somehow pictured "folded" fins, like a taco shell, that fit over the exitsting fins. I ordered a set of injection molded fins. I might add through-the-wall tabs to them; just 1/4", enough to protrude to the inner side of the tube, so I can add epoxy fillets.
__________________
NAR #27085 - Oregon Rocketry - SAM |
#18
|
||||
|
||||
Quote:
On the Little Joe II build threads (either here or on TRF, I don't remember which) George or James illustrate using a dowel sandwiched between the fin halves to form a tab to glue into the body. I thought that rather clever. I have a set of the Saturn V fins and like pictured on the Estes site, they are two halves glued together like LJII so adding a tab should be straight forward. |
#19
|
||||
|
||||
Quote:
__________________
I love sanding. |
#20
|
|||
|
|||
Well this is exciting - erockets have added the #1969 to their New page (out of stock). It's getting closer.
|
Thread Tools | Search this Thread |
Display Modes | |
|
|