motoddrob
Hero member
- Location
- S/W Australia
A chain = the length of a cricket pitch = 22 yards
Executive pannier rack mounting
- Thread starter murphus
- Start date
Andy
Hero member
- Location
- Auckland, roughly
Kegs barrels and hogsheads
mm mm mm mm
mm mm mm mm
Dellortoman
Hero member
- Location
- Tasmania, Australia
I remember reciting in school that 5½ yards = one rod, pole or perch. Therefore, it works out that there are 4 of them in a chain.
A fathom is approximately* 6 ft and a chain is 66 ft. That makes approximately 11 fathoms in a chain.
I also remember from school that there are 10 chains to a furlong and 8 furlongs in a mile.
It kinda pisses me off that I still remember all this. The memory cells that store shit like this in my brain could no doubt be put to better use remembering more important stuff.
Who came up with this shit anyway? Why would any sane person use 5½ as a multiplier?
* Some more of my brain cells are occupied remembering from a celestial navigation course I did many years ago that a fathom is 1/1000 of a nautical mile, which up until 1970 was one arc minute of a great circle, or 6076.1 ft. That makes a fathom exactly 6.0761 ft, or about 6'0⅞". I used to work with a bloke who reckoned that at 6' tall, he was exactly one fathom in height. Peing a pedantic git I had to tell him that he was ⅞" short of a fathom.
But that's not the end of the story because in 1970, the British Admiralty re-defined the nautical mile from 6076.1 ft to 6080 ft. But they left the fathom as it was so now there are 1000.642 fathoms in a nautical mile.
Clear as mud, eh? Makes me proud to come from British stock
A fathom is approximately* 6 ft and a chain is 66 ft. That makes approximately 11 fathoms in a chain.
I also remember from school that there are 10 chains to a furlong and 8 furlongs in a mile.
It kinda pisses me off that I still remember all this. The memory cells that store shit like this in my brain could no doubt be put to better use remembering more important stuff.
Who came up with this shit anyway? Why would any sane person use 5½ as a multiplier?
* Some more of my brain cells are occupied remembering from a celestial navigation course I did many years ago that a fathom is 1/1000 of a nautical mile, which up until 1970 was one arc minute of a great circle, or 6076.1 ft. That makes a fathom exactly 6.0761 ft, or about 6'0⅞". I used to work with a bloke who reckoned that at 6' tall, he was exactly one fathom in height. Peing a pedantic git I had to tell him that he was ⅞" short of a fathom.
But that's not the end of the story because in 1970, the British Admiralty re-defined the nautical mile from 6076.1 ft to 6080 ft. But they left the fathom as it was so now there are 1000.642 fathoms in a nautical mile.
Clear as mud, eh? Makes me proud to come from British stock
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chrisk
Hero member
- Location
- Brisbane, Australia
My grandfather used to say things like: The damn scamp, he was about 10 chain behind me.
Go past the gate, and stop every 3 chain, and throw out another bale.
murphus
Senior member
- Location
- Lost in the Midwest
Always interesting to watch how these conversations (d)evolve. Paul pulls out a tape measurer to illustrate a point, and the next thing you know ...
Back to the subject at hand, Paul, could you measure the distance between your racks at the rear, per the pic here with the yellow line? Also, take a look at how my rack lines up, or doesn't, as the case may be, to bolt up the rear bracket once the front bracket is bolted up and the front stay is positioned. I have the stay rod at approx. 205mm (8in) per the factory parts diagram. Assuming the front brackets are factory, which they look to be, with an approx. 2-inch offset, there is absolutely no way the flat rear bracket can be bolted to the frame. I note that your rear brackets look to have a slight bend to them. The second pic shows how far away the bracket/strap is from the frame rail. I sorta assumed the bits I have are factory, but perhaps not. And if not, no real bother as I can either make different brackets or make a spacer for the rear bracket. It's almost there, and I found some Ducati blinkers cheap on ebay that should work well.
Back to the subject at hand, Paul, could you measure the distance between your racks at the rear, per the pic here with the yellow line? Also, take a look at how my rack lines up, or doesn't, as the case may be, to bolt up the rear bracket once the front bracket is bolted up and the front stay is positioned. I have the stay rod at approx. 205mm (8in) per the factory parts diagram. Assuming the front brackets are factory, which they look to be, with an approx. 2-inch offset, there is absolutely no way the flat rear bracket can be bolted to the frame. I note that your rear brackets look to have a slight bend to them. The second pic shows how far away the bracket/strap is from the frame rail. I sorta assumed the bits I have are factory, but perhaps not. And if not, no real bother as I can either make different brackets or make a spacer for the rear bracket. It's almost there, and I found some Ducati blinkers cheap on ebay that should work well.
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henrywillms
Hero member
- Location
- Canada
murphus
Senior member
- Location
- Lost in the Midwest
Thanks for that, gives me a fuller picture. The racks clearly have to angle back from the front so the bags will clear the side covers as they slide on. Whomever did the original install on my bike back in '83 kinda winged it. The cutaways in the side covers aren't to the measurements in the factory parts schematic, and the holes in the side plates for the lower strut rods aren't in the suggested location. There's no way the racks will bolt on without a 1/2-inch spacer where the rear strap bolts to the rack proper or a reconfigured rear bracket. A spacer does the trick. Pretty much all together now, thanks again.