Thanks Alan for going to all the trouble for me, Much Appreciated. I will try out a few of the programs.
Just to let everyone know... I finally got the hang of the excel W&B sheet, and it's working for me perfectly now. Even my Mini iPad W&B App is in agreement with the spreadsheet. I remeasured all the ARM's again today to double check all my numbers... I was off on both seat arm's a tad. I measured at my "belly-button" location this time as mentioned by Mark <grin>.
Also, According to Mark... my plane is a Laughing Gull LG2, not a Thunder Gull JT2... (Mark...correct me if I heard you incorrectly). I guess I will need to change the lettering on the wing tips now. Also, my plane was designed by Mark originally as apparently as a Float plane with a V-tail. The serial number is LGII-582-004V. So I guess there are 3 or more of this model out there somewhere. I have a standard tail section on it now (bought that way from 2nd owner) cobbed together from another plane either by the previous owner or the initial builder. The craftsmanship of the existing tail section is very good. But, all the remeasured ARM's are off the chart... very different from a standard Thunder gull JT2 as per the J/JT2 manual. The ARM at the trailing edge of the tail skid for example is 235"... So hopefully everyone can now understand my obvious and apparent awkwardness establishing my true CG.
Anyway... now I know what I have to do to get her W&B within the acceptable range, it was way off. BTW... my measurement from tip of nose cone to Wing leading edge is 70.875". I have all the other arm's if anyone is interested, spreadsheet too as well.
Thanks again everyone for your patience and hopefully your understanding... with all my discussion and questions... especially you Mark. I am not really as nieave as I probably have sounded.
Best Regards,
John
Weight & Balance Software
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proscalemodels
Re: Weight & Balance Software
Yes… she has an elevator trim tab on the right side.