A few weeks i got the first peek at switch rod blank No.2 which had been in the impregnator tank for two and half weeks.
Once drained i cleaned the blank off and hung it in the drying cabinet for a week at 22% humidity and 85 degrees temp.
The bamboo is literally translucent in the light and seems very delicate. Upon cleaning the pressure tank i installed new filtered Spar and Switch Rod blank No.3, sealed the top fitting and pressurized the tank. This blank I had in the drying cabinet for a week with descant and light heat. It's really dry and should impregnate very well.
Blank No.3, I used a skim/scrape plane to reform to the specs i found on Hexrod.com archive for a 10' spey rod.
Heres the formula and description of what i used as a guide for my reform, free form, Switch Rod interpretation.
Grantham Ron 120/63 ETSpey 10 Ft 6 Wt
Rod Name Grantham Ron 120/63 ETSpey
Length (inches) 120
Length (feet) 10
Line Weight 6
Number of pieces 3
Number of tips 1
Construction Spey
Comments 120-.465 125-480 130-.495 135-.510 140-.525 144-.537 ET is Electrical Tape This rod has three sections and was made specifically for floating lines and skating deer hair flies for west coast steelhead. The rod is a bit too soft for heavy sinking lines and large flies. It was also designed to be hollow-built with spliced ferrules. I use a Rio Mid-Spey 6/7 line and can routinely Spey-cast 80-90 feet with it. The joints have a 25:1 slope tapering to .060". The spliced ferrule overlaps are: butt to mid: 7.86"; mid to tip: 4.57". The finished rod should be exactly 10 feet long. The joints are held together with transparent tape
Deduction for varnish 0
Allowance for form setting 0
Ferrule 1 0/64 Location 0
Ferrule 2 0/64 Location 0
Station Dimension Form Setting
0 0.111 0.056
5 0.122 0.061
10 0.138 0.069
15 0.162 0.081
20 0.182 0.091
25 0.198 0.099
30 0.213 0.107
35 0.228 0.114
40 0.241 0.121
45 0.255 0.128
50 0.268 0.134
55 0.281 0.141
60 0.295 0.148
65 0.309 0.155
70 0.322 0.161
75 0.336 0.168
80 0.350 0.175
85 0.363 0.182
90 0.378 0.189
95 0.391 0.196
100 0.406 0.203
105 0.420 0.210
110 0.435 0.218
115 0.450 0.225
1 comment:
Hi Tony,
I enjoyed reading your post about your switch rod. I'm also just starting a bamboo switch rod, although something a little smaller than yours. My rod will probably be a 10' 0" 4/5 wt 3 piece rod, primarily designed for swinging streamers for trout. I was looking at Ron Grantham's taper, and have been comparing it with a few others I've been working with...haven't quite narrowed the final taper down yet, but it will probably have a parabolic action. Please post a few pictures as you get to the finishing stages of your rod...would love to see how you design the grip/reel seat.
Regards,
Dave Dozer
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