Activity

With OpenRocket. I sim at 11194.9’@753 mphhttp://openrocket.sourceforge.net/

Thank you very much for the offer. I am limited with timebecause of work schedule but I will take a rain check.I know from Your reputaion You are one of the best atthis.Thanks.I ran across Dave H. Level three launch…   Read more»

Only one answer Mike -get your butt down here and lets v-bag some tip to tip for you.

Mike,I’ve had two other Performance kits hit mach. My Little Dog and My Arrow. The Arrow (My Pork Arrow) hit mach with no ill effects. Neither one has fiberglass reinforcing layers at the fin mounts. Both, as is the Intimidator,…   Read more»

Miek, For what it is worth, you should be able to get 4-40 nylon screws at a good Ace hardware store. If you need smaller, I can get 2-56 at the screw supply here in Fort Collins. Let me know…   Read more»

My rule of thumb – 29mm, little pieces of plastic; 38mm and 54mm 2-56 screws. 3″, 4″ 4-40 screws. Anything about that, break out the 6-32 screws. Bigger than 6″, 10-24… always nylon of course.

I ordered some from Missile Works. Will be here in a fewdays.Thanks.

Mike,I listed my shear pins on my Intimidator on an earlier response. Two on the fore and aft, 4-40’s, worked flawlessly.My Raven data demonstrated separation at apogee and main deployment went as planned.The Intimidator has big fins and drag. I…   Read more»

thanks

What are the weights of the components you are restraining? On my 2.5″ diameter L3 rocket I had to step it up to 6-32 shear pins to keep the nose from deploying when I separated the rocket. I’d start with…   Read more»

I used (3) 4-40 on my Intimidator 5. With a 4 inch airframe you could probably use 2-56 if you wanted. According to Missileworks it takes 35 lbs of force to shear a 4-40 and 25 lbs to shear a…   Read more»

That one is a 96″ chute toroidal profile. Let D1’s L3 down nice and easy. I make about 10 a year for people – not a whole lot but keeps me busy.I actually have a 60″ you can try if…   Read more»

And they are really nice too!

They’re okay

And they are really nice too!

Edward, I had no idea you make chutes.

Sorry, I didn’t read the 20-25 fps. That’s screaming in! At 20 fps I get a 48″ parachute with a 17.5 pound recovery weight and recovering at the North Site – 5500′. A 60″ parachute gives you 16 fps and…   Read more»

Bear, Edward makes nice chute. Something I will point out though, Tripolicolorado.org has a list of vendors that support Colo Rocketry and there is a couple that are local. I am sure many are also on the NCR site. I…   Read more»

That is very interesting. What are you asking for one of your chutes?

What descent rate do you want? I generally go for a 10-12 fps because I like landing soft, especially on our prairie. I make a torodial chute that does very well for the size. On my L3 I used a…   Read more»

I am preparing to purchase a chute for my I-4. Weights appear to be about 16lbs empty. Any recommendations for a chute. I have been told Fruity chutes and Top Flite. It has also been suggested anywhere from 60″ to…   Read more»