MultiRubber13 spreadsheet

From: <mkirda_at_sbcglobal.net>
Date: Sun, 08 Jul 2012 13:31:31 -0000

So I have a question on this spreadsheet.

I have some TanII of unknown provenance. Let me be wildly optimistic and click on May 99.

IIRC, 0.053" motors are 16 or 16.5" in length, so let's say an 8" loop for 0.6 grams.

I'll be wildly optimistic again and say I can get 100% of the turns. I use a 15:1 winder.

The spreadsheet returns: torque 0.430 in-oz with 84 turns.

I know my motors at USIC would take 100 winder turns. I often launched with .475 in-oz and would have launched at 0.5 in-oz (I backed off from that level) if I could have gotten my prop adjusted correctly (at .475 it was hitting the roof).

I guess what I am asking is why the numbers seem low/off?

Regards.
Mike Kirda
Received on Sun Jul 08 2012 - 06:31:34 CEST