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Are you using 38 mm or 54 mm motors? There are some pretty powerful 54 mm motors. If you are using 38 mm motors, you may not need to glass the fins. It all depends on how high of speed you are looking at. As other people have said, Mike Fisher would be a great person to ask.

0.1 g is not much. You will probably be fine at home. You might have to get a little creative with protection of your turf. Wet it down first or something.

I've done 2 - 3 g in my backyard. With all of the laundry packed, the sound is pretty muffled. The ejections can spray out bits of burning matter. I got quite a few small burn holes in a nice synthetic tarp. So be careful about using something nice to muffle the sound or to use as a tarp.

Thanks CJ. Good idea. I will get some 1/4 inch tubing. Off topic question, have you ever done internal fillets via injection with West Systems at temp of 50 degrees? I am more concerned about the epoxy being to viscous to give good internal fillets rather than the curing temp. Aeropoxy...

The pictured eyes are eye nuts. The eye part contains a nut instead of a bolt. This allows the builder to use one all thread and two eye nuts. Clean and simple. Traditionally, people have used eye bolts. CJ discusses all of this earlier in the thread. An eye bolt must be connected to the...

Nice. Where did you get the eye nuts? I got some from McMaster Carr, but the eye is much shorter.

Nice sled setup. I get the general options with all thread, couplers, eye nuts, etc. How do you attach the all thread to the sled? I don't see any ties. I couldn't tell from CJ's pics if he epoxied the all thread to the sled.

Interesting article. I am about to use West Systems in cooler, but not real cold weather. My main concern is whether or not the viscosity will be low enough to make internal fillets. I mixed up some Aeropoxy and I think that it was too viscous for internal fillets in cooler weather. Any...

Mine drifted a number of times on small motors. Once though, at Black Rock, there was a pretty good wind. Easy up, easy down. My rocket was getting drug like crazy on the ground. The top of the tube was picking up desert dirt, and was still getting dragged a long way. I had to get in my car...

Nice. I hadn't seen that before. The TTW fins should be quite strong. Your rocket will be able to take some heavy duty motors, should you decide to do that. Good luck with your build.

Is this a custom rocket? The 4 inch carbon Tomach is a minimum diameter rocket with surface mounted fins. The 54 mm Tomach rockets are the same. You have TTW fins. Nice work though.

Crazyed, I am sure that your cord will be fine. I would protect from heat as others have mentioned. That cord might have a finite lifetime though, no matter how well that you build it. That is the problem that I have had with nearly all of the numerous Estes rockets that I built with my kids...

The epoxy on this part of the kevlar might be fine, as the centering ring might help absorb some of the stress on the kevlar shock cord. I would be concerned about getting epoxy on the kevlar on the other side of the centering ring when it is epoxied in place. An inch or so of epoxy on that...

I was thinking the same thing.

Do you mean like the $600 million dollar CIA cloud computing contract?

The mid section separation design works fine. The coupler and body tube need to be sanded until a proper fit is obtained. If you are motivated to change the design, go for it. I have an older G-Force and it is not built for high power. I got rid of the mesh, but kept the baffle. I use a...

There is Giant Leap Rocketry https://giantleaprocketry.com/products/components_electronics.aspx#trackimo

Thanks. I get all of that. I use Aeropack rear end retainers. OverTheTop was referring to an AeroPack minimum diameter retainer, which is mounted inside of the booster airframe tube on the nose cone side of the motor. The motor is attached to the retainer via a bolt. Many people use this...

The thrust plates are very cool. But even with an Aeropack-style MD retainer, don't the motors have a thrust ring that transfers thrust to the back end?

I've used G40-4's and they worked fine. A G40-7 might be on the long side for a delay for this rocket. Stuff happens. Good luck flying your rocket.