Today, I am start my next build thread and a website. Stay tuned.
Had my day ruined by BSI 15 minute Epoxy.
It took all of 4 minute to turn into this. I thought it was going to burst into flames!!!
I expected atleast 10 minutes of working time, but I looked at the clock when I started, and it was 4 minutes when I saw the cup sagging to one side.
Ok, I've got a crazy idea!
We fly rockets with video cameras to capture on-board footage.... But we only ever get to see this footage after the rocket is down - often many hours after the event.
So, here's where crazy comes in....
I've just ordered a bunch of stuff from Banggood, Hobby King and Ebay :
2 x 3S 1000mAh batteries
1 x 600mw FPV transmitter & receiver
1 x 4.5" LCD display
1 x 170 degree FPV camera
and a bunch of bits to hook it all together - plugs, voltage regulators etc.
It's going to take a few weeks for it all to arrive and then a few weeks more to get it all ready to launch...
But when it's done, I should have clear signal for several 1000' and be able to watch the launch from the pilots seat!
I'll start a build thread when it all arrives
Comments? Suggestions?
Krusty
From Bob Smith's FAQ...
The minute designations on our epoxies are the amount of time one has before the components start to cure to a taffy-like consistency when mixed on a flat surface (such a s the flexible plastic top to a coffee can). Higher temperatures will reduce the working time. As epoxies cure, heat is created. If a larger amount of epoxy (1 oz. or more) is mixed in a cup, a mini-reactor is created which concentrates the heat of curing which causes the epoxy components to kick-off faster which creates more heat which further speeds the curing, creating more heat, so on and so on. On warm days, you can end up with a smoking blob. Lay down parallel, equal lengths of each component before mixing them together to get consistent results. The 20 minute designation of our FINISH-CURE™ takes into account its being mixed in larger quantities in a cup.
Getting late. Might have to tune back in tomorrow.Today, I am start my next build thread and a website. Stay tuned.
Epoxy generated heat as it cures. Heat speeds up the cure process. Then it snowballs on you. Best to mix and then get it spread out quickly if you need working time. Yes, a large blob like that can get hot quick. Just had it happen with my us composites laminating epoxy. I had extra in the up that I squeeze out of a tube back in and it melted the solo cup and was leaking out.
Also watch CA and q-tips / cotton balls. You can get a flame soaking enough thin CA into a cotton ball.
Good deal.Scored an Estes Flying Colors ARF rocket from Wal-Mart for only $4.00
Other than a totally smashed up box and missing chute, no issues. All the other parts were accounted for and undamaged. I have plenty of chutes on hand for a rocket like that.:wink:
I may grab a BT-60 booster for this at some point.
Congrats! Well done,young sir.I graduated from Sacramento City College. This doesn't seem rocketry related, but my parents gave me an Arrow Antenna 440-7BP antenna as a grad present! And I am also taking my HAM radio license test tomorrow evening so I'll be able to use it.
Finished building my Tube Cutting Jig that I started yesterday. I love it!!!
I needed it to make things for my SA-5, so I had to design and assemble it. It works great!
No more pain in the butt cutting tubes, or worrying about getting them perfect.
It works from BT-5 and likely up to 4", but the largest I have on hand is 3", which it handles readily.
I need it for the booster ring and the bt-60 bands for the boosters.
All my tube cutting needs will now be handled by this.
It can hold a variety of blades, but all I had handy is my X-acto, and that works fine, but I'll grab a handful of boxcutters next tine I go by the hardware store so I am not wasting #11s.
How would you like to do that for 8-14 hrs a day?
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