Click here if you are having trouble logging into the forums
Privacy Policy |
Please read our Terms
of Service | Signup and
Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
Gordon Rayner
professor emeritus
Reged: 03/24/07
Posts: 506
|
Re: Who can build me a fork mount?
06/11/08 06:54 PM
|
|
|
Have you tried a parallelogram mount ? The Universal Astronomics p-mount for the Fujinon 25 x 150 model II could be adapted to the Nikon 20 x 120 II . Perhaps you would remove the trunnions and attach a cradle to the tapped holes which held the trunnions. Such a cradle could be aluminum, or oak or eurobeech from Home Depot. I recently completed a four sided oak inner cradle, with Delrin trunnions, to fit 10 x 80 binocs to my all-metal aluminum box tube fork mount(no welding) which was made for the Fuji 25 x 150 I ( with trunnions) and the Nikon 20 x 120 I or II, such as you have. The inner cradle trunnions were sawn from stock Delrin rod, and the central holes to be tapped were drilled in a drill press while held vertically in a V-block on the drill press table, then tapped 3/8-16. Or, the cradle could be attached via boards or aluminum channel , box, or angle; such pieces spanning over and under the two barrels, on the upper and the lower sides, and clamping the barrels via a central bolt with a wingnut. The taper of the barrels will aid fixation.
I have started to experiment with slotted PVC pipe, in Schedule 40 and 80, as azimuth bearings for the Quick Set Hercules and Gibraltar, following the lead of Mr. Andrews' push-to parallelogram mounts in this forum. My project is only half-baked, however.
Most of the difficulty in fork mounts is the attachment of the fork ends to trunnions. One can simplify,using pieces of aluminum angle, perhaps lined with plastic or leather or hardwood, and then captivating the trunnions with something to press the trunnion into the vee. That is the method I use. Gravity provides much of the force.A piece of rope might be used as the retainer.
|
|
17 registered and 27 anonymous users are browsing this forum.
Moderator: EdZ
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Rating:
Thread views: 1591
|
|
|
|
|
|
|
Previous
Index
Next
Flat
Edit
Reply
Quote
