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Does anyone know the TG of AeroPoxy ES6209?

New rocket going up in June. On the pad it will be right at 50 lbs. It's a scratch built design and because of the way the fins are, it's velocity at impact should not exceed 16 to 17fps. I'm looking at 120" toroidal/annular types. What's your favorite maker/model and why? (Let's keep...

Anyone have a 54mm Slimline on their rocket that they can measure the ID of? I need to know the maximum diam. of a thrustring that a 54mm slimline will tolerate.

I am trying to determine the diam. of the graphite (carbon fiber?) rods/tubes used for both versions of the competition towers that Apogee sells. Anyone know? https://www.apogeerockets.com/Launch_Accessories/Launch_Pads/Wedgie_Launch_Pad?zenid=bbk3k5cpbersutb12dnh2vbra3...

Has anyone been brave enough to use this on fiberglass? The directions state NOT to use it on fiberglass, but... I was wondering if you were reasonably quick to flush it from G10/12 airframe fiberglass if it would harm it... ??

I'm getting this msg: "Can't find the name of Intel ICD OpenGL driver" This occurred after I installed OR 15.03 on a new laptop (running Win 10). Any idea how to solve this issue? Thanks.

I'm loading an AT M1500 into a 4 grain CTI Pro75 case. 1. The CTI forward closure does not sit flat on the AT seal disk because of a ridge formed on the face of this disk. With the addition of the o-ring that will sit on top of the seal disk (if I follow Aerotech's directions), that leaves a...

I'm building an AT M1500 for the next launch coming up and this has always made me curious: Why doesn't AT want you to bond the nozzle to the liner? The included yellow sheet addendum states that after bonding the grains in, you are to insure that there is no glue where the nozzle will seat...

At what speed should I switch over to carbon fiber fins? I have a design that will be above Mach 2 for as much as 8 seconds. I have no experience above Mach 2, so comments from the experienced would be very helpful. Thanks.

At our last launch, I flew a scratch built fg rocket that I had the flight computers activated by magnetic switches. Just after the drogue charge fired, one of my EasyMini flight computers shut down. Fortunately, all of my hp flights fly with two flight computers and the backup EasyMini fired...

I fly redundant flight computers about 95% of the time. Today, I was reviewing the data from two EasyMini computers that took a ride in my DarkStar to somewhere around 10,500'. Both EasyMinis started logging data above 500'... thus skewing the final apogee report. I own 6 of these...

I've been playing with larger and larger motors in cardboard low power tubing for a while. My experimentation was driven by a competitive event that my section holds once a year. So far, I've successfully launched CTI G126 motors in 1.64" LP tubing (Estes type.. 0.021" thickness, I think)...

I'm trying to find a sim file for the current Estes V2? I've searched .. but haven't come across one.

I'd like to know what the TRF community thinks a good RSO looks like. In other words, how much and what kinds of experience do you feel qualifies an individual as a good RSO? If there's an on-going discussion on this already, please direct me to it. Thanks!

Does anyone know of ANYTHING that can be used for a short (1") tailcone for the Estes 2.5" tubing that comes in kits like the Argent or Partizon?? Optimally, conical in shape and tapering to an aft dia of 2.15"..... but I'd work with anything that would mate up with tubing. I have no lathe...

When I opened the plastic package of the last grain in a CTI M1590 motor, I discovered that I had a servered o-ring. This is the o-ring that is used as a spacer between grains. I need to find a replacement; Is this a common diam o-ring that I might find down at Home Depot?

I had a little trouble today with the assembly of the CTI M1590 motor I'll be flying soon. Right off the bat the grains had to be pushed in, where normally the grains almost fall through,... on the CTI L910 motors I usually fly. Then after all the grains were in it took a lot of persuasion to...

I've recently moved from rattle cans to spraying my creations with an HVLP spraygun. What clear coat is compatible with the quart cans of Rust-O that I buy at Home Depot?

Harbor Freight had a 20% off sale this weekend.. so I bought a HVLP spray gun. I've been doing some searches and many people painting cars are recommending using an auto paint reducer with Rust-O.... and a hardner. Does anyone on here have experience mixing an auto paint reducer and harder...

I was wondering if anyone has successfully lengthened the delay on a CTI reload? This little 29mm CTI H118 reload has a max delay of 12s and I need 13s in the rocket I will fly this next Saturday. I'm wondering if a paper disk might be placed between the delay grain and the top of the fuel...