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YO JOHN!When do the think you will cut a deal with NASA and the Thiokol Corporation to give away an SRB with one of your largest kits? hehehehe…I have a rather large blast coming up this year. It is a…   Read more»

YO JOHN!When do the think you will cut a deal with NASA and the Thiokol Corporation to give away an SRB with one of your largest kits?

As you know, I’m doing my L3 at Mayhem as well. I just got off the phone with Wildman, and the rest of my components should show up shortly. I’ll make sure to let you know when I start construction.

Mike and Sean, you are both right. Yes, we need to take a peek before construction (which I did with Sean as he lives about 12,000′ from me 😀 )The first 98mm Mongoose I ever saw up-close-and-personal was Sean’s. It…   Read more»

I think for a TRA L3…. You have to have Your rocket inspected along or at particular construction steps..??Is that correct?I’m a couple years away. But one never knows.

John,I’m planning on doing my L3 at MHM – remember you’re my TAP? I hope you didn’t forget that already or we gotta worry about early senility! Just kidding – it would be fun to see the other projects people…   Read more»

Dr J.,4- To further improve igniter reliability, you can do the following (not needed for motors that are not clustered):- Remove the top grain and remove the pellet using a pen/stick (carefully).- Re-install the top grain (note the bevel orientation).-…   Read more»

(we fired around 1200 motors).

I’m envious 8OJW

I talked to Dr J at CTI about using 2 ignitors for redundancy and he said there was no problem with doing that in the CTI motors.Some remarks:-1- You can do that, but make sure you check the throat clearance….   Read more»

Yeah I’m worried about the off-axis thrust myself. I talked to Dr J at CTI about using 2 ignitors for redundancy and he said there was no problem with doing that in the CTI motors. I’ll probably run dual ignitors…   Read more»

Even with the high ignition reliability of CTI, I’d highly recommend moving the outboards adjacent to the central motor to eliminate any effects of off-axis thrust.Looks cool. Kind of like you peeled the 4″ outer skin off my 4×38 bird!Looking…   Read more»

ahh crap it did work. Well at least now I figured out how to have photos on this site. Anyhow there are a lot more photos on the other thread and I’ll continue the build there. Maybe we could open…   Read more»

For kicks I’ll try to see if I can embed photos how I was doing on the other site, let’s see if this works…

Sean, Here’s some flight info on Mongoose 98..http://www.youtube.com/watch?v=tkeq3PBMztw&feature=PlayList&p=183102C319314DC8&index=0&playnext=1http://www.thrustcurve.org/motorguide.jsp?rocket=409Tony

Nice work on the fin can so far!Look, any simulation tool stops being plug-n-play when you start trying to simulate advanced airframes. If you’re building high-flying minimum diameter airframes and you really want to know what they’re going to do,…   Read more»

From my experience, Rocksim tends to be all over the place with high performance flights. I’ve seen overestimates and underestimates, often by significant margins. It would definitely be awesome on the N5800 though.Beautiful work by the way. I say put…   Read more»

Dr J,The numbers were just an estimate from a generic earlier sim. I haven’t done the final weights or imported the new thrust curves for Rocksim yet. And for what its worth Rocksim seems to underestimate these minimum diameter flights….   Read more»

With a full 6GRXL long-burn I’m betting low to mid 40s…

Great looking rocket! Are you sure about these numbers? Is this a stock Mongoose? I was told it sim’ed to around 60kft with the N5800 6GXL load.Jeroen

BALLS is going to be epic this year. I can’t wait… I am assuming that is the time and place you are going to do the long-burn 98mm?I need to go back to the drawing board and come up with…   Read more»

Well I won’t know for sure until I get the final weight, probably in the low 20s with a 3 grain. Rocksim always seems to underestimates these flights by 20% or so as you know. With a full 6GRXL long-burn…   Read more»