Taper for Grainger Aristocrat - Douglas P. Easton

Jerry,
I have determined that there are errors in the figures on the Grainger I
gave to you for posting. Since the data are posted prominently on the
Rodmakers Site where people might copy them for rod making , I feel that it
is important to make corrections. The errors arose because of my
misunderstandings of the vernier scale I was using. If you wish I will send
a retraction to the list serve.

 Here is the remeasured taper for the Grainger 8.5 ft Aristocrat.
 
Point    Dia. (ave 2 flats*)  	Stress (F(b))**		Parameters
1	0.087			 	 26360			Rod Length 8'6" (102")
5	0.092				114122			Action length 90"	
10	0.110				138313			Line Wt. #5
15	0.135				116807			Pieces 3/2 (data for dry fly tip only)
20	0.165				 89426			Line fished 45'
25	0.175				 99044			Tip impact factor 2.081
30	0.189				100264			Std. Ferrules 16/64 & 18/64
35	0.197	f 			111337			Allowance for varnish None
40	0.197				141556
45	0.207				150443
50	0.233				127265
55	0.240				138376
60	0.246				150862
65	0.268				135630
70	0.290	{68} f			124959
75	0.295				139427
80	0.309				140854
85	0.317				150052
89	0.340				------

*Flat 1 casting plane, Flat 2 adjacent flat.
**Calculated by "Web Hexrod"

As you can see from the F(b) progression, this is a parabolic rod with a
stress peak in the tip at 10" and in the mid section (twin peaks) at 45 and
60". The overall shape is about the same as in the previous stress curve.
Just lower peaks. The max flex is in the mid section-giving a parabolic
action.

I will do anything (except public self-immolation) to set this right.
Please let me know what is your pleasure.

Regards,

Doug Easton
Tonawanda, NY
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