Author Topic: Dragonfly shock absorber cover bolts.  (Read 176 times)

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Offline Sgtbiro

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Dragonfly shock absorber cover bolts.
« on: 28 Jul 2020 at 19:58 »
Hi all could someone please supply me with the dimensions of the the two bolts part number 23065 which attach the shock absorber cover to the gearbox on a Dragonfly.
Cheers Kevin..
 

Offline patrickwhitty

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Dragonfly shock absorber cover bolts.
« Reply #1 on: 29 Jul 2020 at 16:17 »
2 1/2 inches long (excluding the head) x 1/4 inch, 1/2 inch threaded. Not sure of the thread but it matches a 1/4 x 28 UNF tap. What did Douglas use, BSW?  That is what it looks like but perhaps someone will correct me. I must build up my stock of nuts and bolts, they come in handy for identifying bolt sizes.

Offline eddie

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Re: Dragonfly shock absorber cover bolts.
« Reply #2 on: 29 Jul 2020 at 17:14 »
The bolts are 1/4" BSF - (1/4 x 26 tpi).

  Eddie.


  Generally, most threads on postwar machines are Whitworth form (BSF or BSW), except wheel spindles and on later Dragonfly wheels (British Hub), which are British Standard Cycle threads.
« Last Edit: 29 Jul 2020 at 17:20 by eddie »

Offline Sgtbiro

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Re: Dragonfly shock absorber cover bolts.
« Reply #3 on: 30 Jul 2020 at 18:01 »
Thanks for the info guys itís much appreciated.
Regards kevin...

 

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