> A week or so ago I had a very nice launch of my Mongoose (my first
> 2-stage launch - I still can't believe it took off so perfectly).
> Unfortunately, the landing was sub-optimal. We lost sight of the rocket,
> but a friendly passing motorist returned what was left of it sometime
> later. The body tube is a bit bent up but fixable. The nose cone,
> however, is competely trashed. My questions are
> 1. How do I determine the BT size of the Mongoose? I don't remember
> seeing that in the instructions. I'm willing to buy calipers if
> necessary (I tried a straight ruler but got wildly inconsistent
The Mongoose uses a precolored version of BT-50, and will accept all
BT-50 nose cones.
> 2. Given the answer to (1), may I assume that nose cones are labeled in
> such a way that a BT-XX tube takes a ??-XX nose cone?
Correct -- if you're going to the hobby shop to buy nose cones, you'll
be looking for a PNC-50 assortment, which will most likely include at
least one nose that's an exact replacement, except for color.
> 3. Given the answer to (2), where would be a good place on on the Net
> to obtain a replacement nose cone? The local hobby shops here in
> Champaign-Urbana don't seem to sell nosecones separately.
You might try shop-online places such as Hobbylinc, Discount Rocketry,
Atomic Rocketry, etc. -- or you might just pick up the phone and call
Estes (800 number is in the FAQ) and request a replacement nose; they'll
probably just stick one in the mail to you.
> 4. Any tips for re-enforcing the top of the body tube? Is it best to add
> support inside or outside?
Soak some thin CA (cyanoacrylate glue) into the tube material at the
edge and for an inch or so inside the tube; this will strengthen and
stiffen it a great deal without changing the appearance noticeably.
Some people also wrap clear packing tape around the outside of the tube
at the mouth -- same idea.
WARNING!! This area has been designated an official DOPE FREE ZONE!!
If you're going to be a dope, please do it somewhere else!
Donald Qualls, aka The Silent Observer NAR # 70141-SR Insured
Rocket Pages http://members.aol.com/silntobsvr/launches.htm
Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.