Originally Posted by Bob H

Yes it's cut 90 degrees to the leading edge. The fins were trimmed so they had more of a Red Max shape. They are slightly smaller than the real one but I wanted to use the fins from the Mimi.

I will have to measure the fins and send you the dimensions.

I don't know what I did with that fin with the markings. I only used three fins on the model so it should be in my shop area. But my shop is like a black hole/time machine. Things get sucked in and disappear and no amount of searching can find them. Later, when I have no use for the lost item, it will magically reappear in the middle of my work area.

Originally Posted by CPMcGraw

We share the same workshop conditions, Bob. Stuff appears when I don't need it, but promptly disappears when I try to locate it again.

I might be able to get the dimensions from that image; I'm almost finished rebuilding my computer after a virus hit it last week. Once I can get PhotoshopElements reloaded, I should be able to find the root length. That was all I needed, since you've confirmed the tip angle.

Thanks...

Originally Posted by Bob H

I measured the fins on the one I made and the root length is 2 3/8". The original Mimi root edge was 2 3/4". I just eyeballed these when I made it. The 90 degree corner wasn't made with a square but it's real close.

I used the 18mm Baby Bertha motor mount when I made it, but you could certainly use the 24mm motor mount from the Mimi. Here in New England, there really aren't too many places where I could let it go on a D12 and expect to get it back. I suppose I could have used the 24mm mount and flown it with an adapter for the smaller fields.

Originally Posted by CenturiGuy

"Behold!" (maniacal laughter)

Originally Posted by CPMcGraw

Finally had a chance to look this one over...

Nice. This will very much be added to the collection. Looks like the B4-2 and the C11-5 are the optimal motors, given their deployment Vs.

I need to re-evaluate the fin shape, and try out Bob's dimensions to see if the rocket gets any improvement.

Originally Posted by CenturiGuy

My cashflow is temporarily tapped out due to SEMROC's Most Excellent 50% off Sale, so I won't be able to pick up a *real* (i.e., "analog" vs. digital) Mimi for another week or so.

Originally Posted by CPMcGraw

Thanks on the measurement. Now I can get mine built...

Originally Posted by kurtschachner

What? You mean you can't just announce the flight as a "C" engine and get away with it?

Hmm, better change my ways

Originally Posted by Ltvscout

What are we going to do with all those "B" flights we have?