jeff2space
Well-Known Member
Am I missing something?
No, your not missing anything. Thrust plate is not needed if MMT, CR, and TTW Fins are attached properly. I decided I wanted to use it on this project.
Am I missing something?
What will you be doing to secure said bulkplate?Bulk plate will be removable for possible GPS tracker.
What will you be doing to secure said bulkplate?
Sounds good - the trick is always seems to be making sure that nothing will pull loose.I'll be drilling three holes in centering ring for tee nuts. Centering ring will be epoxied into nosecone. Bulkplate will be screwed to centering ring through tee nuts. I'll show this when I get to that point.
Sounds good - the trick is always seems to be making sure that nothing will pull loose.
My personal favorite method:It more of a problem of them backing out.
You can use another CR to sandwich them into place.
I have moved onto threaded inserts.....
A couple drops of you favorite metal bonding epoxy then, you drive them in with a ratchet, nut driver, or cordless drill...
JD
Also did some sanding to fit centering ring and bulk plate into nosecone.
View attachment 253140
What I do with the FG nosecones:
Cut a piece out of a coupler and slide it in to help strengthen and backup the CR you want to glue in place.
JD
Ok, here's the method I came up with for installing straight fins on a 6" rocket.
View attachment 253846
Each fin slot is transferred 180 degrees and marked with a line. Two 8"x12" framing squares are clamped together to form a U. One long side of U is clamped to fin. Other long side of U gets lined up with line on opposite side. This should provide a straight fin.
It looks like you have a three fin BT, so you have to be sure your 180 deg line is accurate,
then you have to make sure that you compensate for the offset of the two squares being clamped to each other, and one of them being clamped to the side of the fin and not the centerline of the fin.
I've found that a piece of 1/4" foam board, a protractor and compass to layout lines and a new blade in the exacto knife can produce a form to align fins pretty accurately. You might want to consider that.
Good luck.
One square is clamped to side of fin. Second square is clamped to first square on same side as fin which makes second square pretty close to being in same vertical plane as the fin. This square gets lined up with 180 degree mark.
Assuming the 180 deg. line marks the centerline of the fin, if the second square is in the same plane with the surface of the fin and not the centerline.
I know this is rocket science but this method is close enough for me. There's some error in measurements, square thickness, line thickness, fin thickness, etc. In the end I double check everything using the best tool available, my eyes.
Jeff
Looks like your doing a great job. When are you planning to make its flight?
See you at the Bong
This is how I aligned the fins on my DarkStar extreme.
I started out by printing a template from https://www.payloadbay.com/index.php?page=Tools&action=FINGUIDES
Why so many switches?
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