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BMX General => BMX Chat => Topic started by: sparky on September 27, 2010, 01:44 PM

Title: Shimano DX cranksets
Post by: sparky on September 27, 2010, 01:44 PM
Am I right in saying there were two different generation of the DX crankset, the main difference being the pedal attachment ends of the crankarms?
Title: Re: Shimano DX cranksets
Post by: meticulous on September 27, 2010, 08:44 PM
yes, sort of, they started in 1978 with the 600, but they looked completely differant, this website shows the 1981 version with the extendable lenth part but no others without it, funny thing is never remember the extendable lenth part, but this may be that i never looked closely enough to a crankset....


http://martinbike.jalbum.net/Bike%20Builder/Cranks%20&%20Drivetrain/index.html
Title: Re: Shimano DX cranksets
Post by: sparky on September 27, 2010, 10:43 PM
Sam, I was refering to where the pedal screws in. I'm sure I've seen two styles, here's the first which I've hunted down. Notice the nut to the rear of the length adjuster, allen adjustment, etc, which I understand are the 1st gen

(http://www.radbmx.co.uk/archive/albums/rr212/Volcanobmx/DX-Crank-Instructions.jpg)

...on the 2nd this was replaced with a tooth type fitment (which mine are).
Title: Re: Shimano DX cranksets
Post by: glenboy on September 27, 2010, 11:04 PM
the instructions above are the same as my dx's with the pedal fittings

(http://www.gbwatches.co.uk/bmx2/Dscn1434.jpg)

Title: Re: Shimano DX cranksets
Post by: sparky on September 27, 2010, 11:14 PM
...and here's the other style. :daumenhoch:

(http://www.radbmx.co.uk/archive/albums/oo188/os-db/P1000067.jpg)
Title: Re: Shimano DX cranksets
Post by: glenboy on September 27, 2010, 11:18 PM
i didn't realise they were 2 types, the previous ones i have seen were like mine with writing on the outside chrome part of the pedal extender bit
Title: Re: Shimano DX cranksets
Post by: sparky on September 27, 2010, 11:21 PM
i didn't realise they were 2 types, the previous ones i have seen were like mine with writing on the outside chrome part of the pedal extender bit

I hadn't until I was looking for the instruction manual. Apparently the design was changed because the adapter pin had a tendency to snap off.
Title: Re: Shimano DX cranksets
Post by: monkian on September 27, 2010, 11:24 PM
Cool bit of Tech info. Very nice :daumenhoch:
Title: Re: Shimano DX cranksets
Post by: meticulous on September 28, 2010, 07:29 AM
see what you mean, both of mine are like that instruction manual...  never knew there was another design. :)
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